Executive Summary

Montenegro presents a unique and dynamic tax digitalization landscape, characterized by two distinct, yet related, systems:

Live, Mandatory Real-time Fiscalization (CTC-type reporting): Montenegro has fully implemented a robust “Continuous Transaction Control (CTC)-type continuous transaction control in which every invoice (cash and non-cash; B2C, B2B, B2G) is transmitted to the tax authority at the moment of issuance and stamped with a unique code (JIKR) and a QR code.” This system has been mandatory since 1 January 2021 for all VAT-registered entities, replacing older hardware fiscal registers.
Planned, Not-yet-Legislated Structured B2B E-invoicing Platform: In parallel, Montenegro is actively preparing to introduce a structured B2B e-invoicing platform. This initiative is driven primarily by its aspirations for EU accession and the need to align with the EU’s VAT acquis, including the VAT in the Digital Age (ViDA) package. The platform is intended “to be adapted from Serbia’s Sistem e-Faktura” and will support the EN 16931 / UBL 2.1 standard. However, as of July 2026, it is not yet legislated, and its go-live date remains unconfirmed (speculative dates range from 2025 to 2027).

Key Distinction: It is crucial not to conflate the live real-time fiscalization system with the planned structured e-invoicing platform. While fiscalization provides real-time transaction reporting, the structured e-invoicing aims to facilitate structured document exchange.

1. Current State: Real-time Fiscalization (LIVE and MANDATORY)

Montenegro’s real-time fiscalization system is a comprehensive and advanced model for continuous transaction controls.

Mandate and Timeline: The system became mandatory on 1 January 2021, with full enforcement by 1 June 2021, following the Zakon o fiskalizaciji u prometu proizvoda i usluga (Law on Fiscalization in the Turnover of Products and Services). It replaced traditional hardware fiscal cash registers with software-based, internet-connected reporting.
Scope: Fiscalization applies to “all VAT-registered persons issuing invoices for goods/services, regardless of payment type or customer (B2C/B2B/B2G).” This means both cash and non-cash, and B2B, B2C, and B2G invoices are all fiscalized in real time. Limited exemptions exist for sectors like banking, insurance, and certain open-market agricultural sales.
Operating Model (How it Works):At the moment an invoice is issued, the taxpayer’s certified software generates an invoice with an IKOF (issuer code).
The “digitally-signed XML invoice data is sent to the Revenue and Customs Administration at issuance.”
The tax authority (Uprava prihoda i carina Crne Gore) validates the data and returns a JIKR (jedinstveni identifikacioni kod računa / unique invoice ID) in real time.
The “fiscalised invoice (with IKOF, JIKR and QR)” is then provided to the buyer.
Buyers can verify the invoice’s registration with the tax authority using the QR code or the online service.
Mandatory Format: The system uses “digitally-signed XML to the fiscal service (qualified certificate).”
Rationale: Fiscalization was introduced primarily “to combat the grey economy and VAT under-reporting by giving the tax authority real-time visibility of all sales, with buyer-side receipt verification via QR as a control.”
Penalties: Significant penalties are in place for non-compliance, with fines ranging from “€8,000–€40,000 (legal entities), €2,000–€12,000 (entrepreneurs), €1,300–€4,000 (responsible persons) for failing to fiscalise/use the fiscal service.”
Archiving: The Revenue and Customs Administration centrally holds the fiscalized invoice data, while taxpayers are required to retain their records for 10 years in electronic form. Integrity and authenticity are ensured by the digital signature and the JIKR.

2. Future State: Structured E-invoicing (IN PREPARATION, Not Yet Legislated)

Montenegro is laying the groundwork for a mandatory structured B2B e-invoicing platform, but it is not yet legally mandated.

Status: “A separate structured (EN 16931) B2B e-invoicing platform — to be adapted from Serbia’s Sistem e-Faktura — is only IN PREPARATION and not yet legislated.” There is “no adopted law or confirmed go-live date exists” as of July 2026.
Timeline: While a “Serbia e-Faktura licence agreement” was secured on 27 October 2023, the “structured e-invoicing go-live not confirmed (variously cited 2025–2027).” Any specific dates are currently speculative.
Rationale: The move towards structured e-invoicing is “driven by EU-accession alignment with the VAT acquis and the regional trend (Serbia, Croatia) toward centralized CTC e-invoice platforms.” This aligns with the “ViDA implementation timetable until accession.”
Intended Model and Format: The platform will be adapted from Serbia’s model, implying a “clearance-style e-invoice platform [that] would add structured document exchange.” The intended mandatory format is EN 16931 / UBL 2.1.
Scope (Planned): When legislated, it is expected to cover B2B and B2G transactions, enabling “centralized creation, exchange and archiving of EN 16931 invoices for businesses and sole traders.”
Uncertainties: The primary risks include the “unconfirmed e-invoicing timeline” and the fact that “reform documents are pending publication in the Official Gazette.”

3. EU Accession and ViDA Alignment

Montenegro’s tax digitalization strategy is heavily influenced by its ambition to join the European Union.

Candidate Status: Montenegro is an EU candidate country, meaning it is “not an EU or EEA member, so no EU Directive binds it directly.”
Alignment Objective: However, “alignment with the VAT acquis — including ViDA’s digital-reporting pillar — is the strategic driver behind the structured-e-invoicing move.” Chapter 16 (Taxation) of the accession negotiations is open and active.
ViDA Impact: While “ViDA does not bind Montenegro today,” as an accession country, it will need to converge with EU digital reporting requirements over time. The planned structured e-invoicing platform using EN 16931 is a direct step towards this alignment.
Current Gap: Montenegro’s live fiscalization uses national XML and codes (IKOF/JIKR), which differs from the EN 16931 / UBL standard promoted by ViDA. The planned structured e-invoicing platform aims to close this “format and model gap.”

4. Other Important Facts and Ideas

VAT Rates:
- Standard: 21%
- New Intermediate: 15% (effective 1 January 2025 for accommodation, hospitality, books)
- Reduced: 7% (basic food, medicines, textbooks)
VAT Registration Threshold: €30,000 (raised from €18,000 in 2021).
Currency: Euro.
Pre-filled VAT Returns: Not currently available or documented, though the real-time fiscalization data could technically support it in the future.
Administrative Body: The Uprava prihoda i carina Crne Gore (Revenue and Customs Administration) operates the fiscalization system and is a merged tax and customs body.
SME Implications: SMEs are already subject to real-time fiscalization, incurring costs for certified software, qualified certificates, and connectivity. The Revenue and Customs Administration provides a self-service EFI portal and tools. The future structured e-invoicing platform will introduce additional integration costs and automation benefits.

5. Key Risks and Uncertainties

The report highlights the following key risks:

Two Distinct Systems: A critical risk is the “conflating live fiscalization (real-time reporting) with the not-yet-legislated structured e-invoice platform.” These are separate, albeit related, initiatives.
Unconfirmed E-invoicing Timeline: The precise go-live date for mandatory structured e-invoicing remains speculative, with “reform documents pending publication in the Official Gazette.”
Primary-source Verification: Ongoing need to verify specific legislative details, particularly concerning pravilnik (implementing regulations) and the status of a reported December 2025 VAT amendment bill.

6. Actionable Recommendations

For businesses operating in Montenegro:

Immediate Action (Now): Ensure full compliance with the live real-time fiscalization mandate. This includes proper integration of ERP/POS systems with the fiscal service, managing qualified certificates, and ensuring all invoices bear the IKOF, JIKR, and QR codes.
Monitor (Ongoing): Closely watch for legislative developments regarding the structured B2B e-invoicing law, particularly its publication in the Official Gazette and confirmation of go-live dates (expected 2025–2027). Track the progress of Montenegro’s EU accession, especially regarding Chapter 16 (Taxation).
Prepare (Future): Proactively plan for future integration with an EN 16931 / UBL-compliant platform, considering the licensing of Serbia’s Sistem e-Faktura as a guide for the likely model. Stay informed on any potential changes introduced by the reported December 2025 VAT amendment bill.

Extended article

CTC / Continuous Transaction Controls Analysis for Senior Leadership

Information cut-off date: 2 July 2026. All statements reflect sources available on or before this date. Every substantive statement carries an inline citation [n] resolving to the numbered source list in Chapter 20. Where information is unavailable, not yet legislated, or not applicable, this is stated explicitly rather than omitted. Sources older than 12 months or apparently superseded are flagged inline. Local-language terms are given in Dutch with an English gloss on first mention.

One-line orientation: Montenegro is not a Continuous Transaction Controls (CTC) or clearance country. It has no mandatory domestic B2B or B2G e-invoicing clearance regime and no mandatory continuous transaction reporting (CTR) system in force. While Montenegro has introduced broader tax digitalisation measures, electronic invoicing is not subject to a nationwide mandatory CTC framework, and there is no enacted domestic B2B e-invoicing or digital-reporting mandate as of 2 July 2026. As a candidate country for accession to the European Union, Montenegro is expected to continue aligning its VAT and digital tax framework with the EU acquis over time, but it is not subject to the EU ViDA implementation timetable until accession. [1][2][4]

Chapter 0 — Executive Summary (At-a-Glance)

MODEL NOTE — Montenegro already runs real-time electronic fiscalization — a CTC-type continuous transaction control in which every invoice (cash and non-cash; B2C, B2B, B2G) is transmitted to the tax authority at the moment of issuance and stamped with a unique code (JIKR) and a QR code. This is LIVE. A separate structured (EN 16931) B2B e-invoicing platform — to be adapted from Serbia’s Sistem e-Faktura — is only IN PREPARATION and not yet legislated.

Status

Fiscalization: live and mandatory since 2021 (Zakon o fiskalizaciji, Sl. list CG 46/2019, 73/2019, 8/2021) [11][15]. Structured B2B e-invoicing: in preparation / announced — not legislated, no confirmed go-live [18][23].

Model

Real-time fiscalization (CTC-type reporting). Signed XML invoice data is sent to the Revenue and Customs Administration at issuance and returned with a JIKR; the fiscalised invoice (with IKOF, JIKR and QR) is then given to the buyer [19][22]. A future clearance-style e-invoice platform would add structured document exchange [23].

Mandatory format(s)

Fiscalization: digitally-signed XML to the fiscal service (qualified certificate). Future structured e-invoice: EN 16931 / UBL 2.1 via the licensed Serbian platform. There is no national CIUS published yet [19][23].

Key dates

Fiscalization go-live 1 January 2021; migration off legacy hardware registers completed 1 June 2021 (full enforcement). Serbia e-Faktura licence agreement 27 October 2023; structured e-invoicing go-live not confirmed (variously cited 2025–2027) [19][23][21].

Taxpayers in scope

Fiscalization: all VAT-registered persons issuing invoices for goods/services, regardless of payment type or customer (B2C/B2B/B2G); limited exemptions (e.g. banking, insurance, certain open-market agricultural sales) [19][18].

Central platform / operator

Uprava prihoda i carina Crne Gore (Revenue and Customs Administration) operates fiscalization (self-service EFI portal, sep.tax.gov.me; software built with Asseco SEE); the Ministarstvo finansija (Ministry of Finance) owns e-invoicing policy [1][2][34].

Penalty exposure

Fiscalization fines: €8,000–€40,000 (legal entities), €2,000–€12,000 (entrepreneurs), €1,300–€4,000 (responsible persons) for failing to fiscalise/use the fiscal service [19][16].

VAT (PDV) rates

Standard 21%; new intermediate 15% from 1 January 2025 (accommodation, hospitality, books); reduced 7% (basic food, medicines, textbooks). Registration threshold €30,000; currency is the euro [24][17].

ViDA alignment

N/A today (not bound), but an accession target. Montenegro is an EU candidate; Chapter 16 (Taxation) is open, and alignment with the VAT acquis — including ViDA’s digital-reporting pillar — is the strategic driver behind the structured-e-invoicing move [5][9].

Top 3 open risks / uncertainties

(1) Two distinct systems — do not conflate live fiscalization (real-time reporting) with the not-yet-legislated structured e-invoice platform [18][23].
(2) Unconfirmed e-invoicing timeline — reform documents are pending publication in the Official Gazette; dates (2025–2027) are speculative [21][20].
(3) Primary-source verification — some exact pravilnik/gazette numbers and the Dec-2025 VAT amendment bill status need checking on sluzbenilist.me [30].

Information cut-off date

6 July 2026. All cited URLs were checked during research on this date [37].

Chapter 1 — Introduction & Country Context

1.1 Tax digitalisation journey

Montenegro moved directly to a real-time fiscalization model. The Law on Fiscalization in the Turnover of Products and Services (Zakon o fiskalizaciji u prometu proizvoda i usluga) replaced the old hardware fiscal cash registers with software-based, internet-connected fiscalization of every invoice — cash and non-cash alike — transmitting invoice data to the tax administration at the point of issuance [11][19]. The system went live on 1 January 2021 and fully replaced legacy registers by 1 June 2021 [19]. A separate structured e-invoicing platform is now in preparation, building on a 2023 licence of Serbia’s Sistem e-Faktura [23].

1.2 Rationale (grey economy, VAT gap, EU alignment)

Fiscalization was introduced to combat the grey economy and VAT under-reporting by giving the tax authority real-time visibility of all sales, with buyer-side receipt verification via QR as a control [19][29]. The move toward structured e-invoicing is driven by EU-accession alignment with the VAT acquis and the regional trend (Serbia, Croatia) toward centralized CTC e-invoice platforms [23][9].

1.3 Positioning — a real-time-reporting mover, preparing structured e-invoicing

On the reporting side Montenegro is ahead of post-audit EU states such as Czechia and Iceland — it already fiscalises all invoices in real time — but on structured e-invoicing it is a preparer/follower, without a live EN 16931 clearance platform or a legislated B2B mandate [18][21]. It sits alongside Western-Balkan peers Serbia (SEF, live) and Croatia (Fiskalizacija 2.0) in the CTC family [23].

1.4 Supranational authorisation / accession context

Montenegro is not an EU or EEA member, so no EU Directive binds it directly and no VAT-Directive derogation is relevant; instead it is an EU candidate aligning with the acquis under accession negotiations, with Chapter 16 – Taxation opened in 2015 and still in active negotiation [6][5]. Montenegro is the frontrunner candidate, provisionally closing five further chapters in December 2025 [7].

Chapter 2 — Regulatory Framework

2.1 Primary legislation

The operative statute is the Zakon o fiskalizaciji u prometu proizvoda i usluga (Law on Fiscalization), published in Službeni list Crne Gore br. 46/2019 and 73/2019, amended by 8/2021 [11][15][19]. The substantive VAT law is the Zakon o porezu na dodatu vrijednost (VAT Law, PDV), with a standard rate of 21%, a new intermediate 15% rate (from 1 January 2025) and a reduced 7% rate; the VAT-registration threshold is €30,000 and the currency is the euro [14][24][17]. A December 2025 VAT-amendment bill (PE rules, zero rates, exemptions, registration, penalties) has been reported and its status should be re-checked [30][33].

2.2 Implementing regulations & technical specification

The fiscalization technical and functional specification (the pravilnik defining the fiscal-code architecture — IKOF, JIKR, QR, the fiscal service and certificate rules) is issued by the Ministry of Finance / Revenue and Customs Administration and published in the Službeni list; the exact gazette numbers of the implementing pravilnik should be verified on sluzbenilist.me [19][22]. The structured e-invoice technical rules (EN 16931 / UBL 2.1) will follow the platform legislation once adopted [23].

STATUS FLAG — The structured B2B e-invoicing mandate is not yet legislated (as of 6 July 2026). Montenegro’s Ministry of Finance secured a licence of Serbia’s Sistem e-Faktura in October 2023 and intends to adapt it locally, but the reform documents remain pending publication in the Official Gazette, and no adopted law or confirmed go-live date exists [23][21][18].

2.3 Guidance & administrative practice

The Revenue and Customs Administration operates the self-service EFI portal and publishes fiscalization guidance; receipt verification (QR / invoice-code lookup) is available to buyers within a validity window [2][29]. There is no clearance-guidance for a structured e-invoice platform yet, because the platform is not live [18].

2.4 Supranational / international legal basis

No EU/EEA instrument binds Montenegro; the relevant supranational driver is the EU-accession VAT acquis, including the ViDA package (Council Directive (EU) 2025/516, adopted 11 March 2025), toward which Montenegro must converge over the accession horizon (Chapter 16) [10][5]. This is a direction of travel rather than a current legal obligation [9].

Chapter 3 — Scope of the Mandate

3.1 Transactions in scope (fiscalization)

Fiscalization applies to all VAT-registered persons issuing invoices for the supply of goods and services in Montenegro, regardless of the means of payment or the type of customer — so B2C, B2B and B2G invoices are all fiscalised in real time [19][18]. Non-cash (B2B) invoices are within scope, which is why Montenegro already has real-time reporting of business-to-business transactions [19].

3.2 Structured e-invoicing scope

STATUS FLAG — Not applicable yet. Because the structured e-invoice platform is not legislated, there is no B2B/B2G structured-e-invoicing scope in force; the licensed Serbian model would, when adopted, add centralized creation, exchange and archiving of EN 16931 invoices for businesses and sole traders [23][21].

3.3 Excluded / exempt transactions

Certain activities are exempt from fiscalization (reported across sources as including banking and insurance services and certain agricultural sales on open markets); VAT-exempt supplies follow the VAT Law’s exemption provisions [19][14]. These exclusions rest on the fiscalization law and its pravilnik; the exact exemption list should be confirmed against the consolidated law and implementing rules [11].

Chapter 4 — Taxable Persons in Scope

4.1 Established domestic entities

Every domestic person registered as a fiscalization obligor (broadly, businesses supplying goods/services and issuing invoices) must fiscalise each invoice in real time [19]. VAT registration is required where taxable turnover exceeds €30,000 over 12 months; below that, registration is voluntary [17].

4.2 Non-established entities

Non-established persons carrying on taxable activity in Montenegro and issuing invoices are within the fiscalization framework on the same real-time basis; the public sources do not set out a separate non-established e-invoicing regime, and the exact treatment should be confirmed with the Revenue and Customs Administration [19][18]. There is no structured e-invoicing obligation on any category yet [23].

4.3 Voluntary participation

Structured B2B e-invoicing is voluntary and, per advisers, permitted with the buyer’s explicit consent and an electronic signature ensuring integrity and authenticity — but this is bilateral e-invoicing, not participation in a national platform (which does not yet exist) [18][23].

4.4 Sector-specific rules

Fiscalization is broadly transaction-agnostic across obligors, with sector exemptions noted in Chapter 3; there is no sector-specific structured-e-invoicing rule because there is no structured mandate [19][18].

Chapter 5 — Implementation Timeline

5.1 Legislative history & milestones

2019 — Zakon o fiskalizaciji enacted (Sl. list CG 46/2019, 73/2019) [15][19].
1 January 2021 — electronic fiscalization goes live (cash and non-cash) [19][21].
8/2021 — amendment to the Fiscalization Law; phased application through 2021 [11][36].
1 June 2021 — migration off legacy hardware fiscal registers completed; full enforcement [19].
4 June 2021 — VAT-registration threshold raised to €30,000 [25].

5.2 Voluntary / pilot phases

Fiscalization was rolled out with a preparation period through late 2020 and phased application in 2021; the Revenue and Customs Administration provided the fiscal service, certificates and the EFI portal for onboarding [36][2].

5.3 Structured e-invoicing preparation

27 October 2023 — Montenegro’s Ministry of Finance agrees to license Serbia’s Sistem e-Faktura (EN 16931 / UBL 2.1, CTC clearing model) to build a national e-invoicing platform [23][26].
2025–2027 (speculative) — advisers report mandatory B2B/B2G e-invoicing as “planned” with unconfirmed dates; reform documents pending gazette publication [21][20].

5.4 VAT-rate milestones

1 January 2025 — new 15% intermediate VAT rate introduced (accommodation, hospitality, books), gazetted October 2024 [24][31].

5.5 Pre-mandate technical milestones

For fiscalization, the fiscal service, qualified-certificate issuance, the EFI self-service portal (sep.tax.gov.me) and receipt-verification tools are all in production; the software was developed with Asseco SEE [2][34][19]. For structured e-invoicing, the technical environment will follow the (as-yet-unlegislated) platform [23].

5.6 Known / anticipated developments

STATUS FLAG — No confirmed structured-e-invoicing go-live date exists as of 6 July 2026. Sources variously cite 2025, 2026 or 2027, and explicitly note that dates are unconfirmed and reform documents are pending publication; treat any specific date as speculative until an adopted law appears in the Službeni list [20][21].

Chapter 6 — Operating Model (How It Really Works)

6.1 Model type & role of the tax authority

MODEL NOTE — Real-time fiscalization — a CTC-type continuous transaction control. At the moment an invoice is issued, the taxpayer’s certified software sends the digitally-signed XML invoice data to the Revenue and Customs Administration, which returns a JIKR (jedinstveni identifikacioni kod računa / unique invoice ID); the invoice printed or delivered to the buyer must carry the IKOF (issuer code), the JIKR and a QR code. This is real-time reporting/validation, not post-audit [19][22].

6.2 Invoice lifecycle (fiscalization)

Create — the taxpayer’s POS/ERP generates the invoice and the IKOF (izdavačev kod obveznika fiskalizacije) locally [22].
Sign & send — the invoice XML is digitally signed with a qualified certificate and transmitted to the tax authority’s fiscal service over the internet [19].
Fiscalise — the tax authority validates and returns the JIKR (unique invoice ID) in real time [19].
Issue — the fiscalised invoice, showing IKOF, JIKR and a QR code, is given to the buyer [22].
Verify — the buyer can check the invoice against the tax authority’s record via the QR/verification service within a validity window [29].

6.3 Authentication & access methods

Fiscalization requires a qualified electronic-signature certificate for the taxpayer’s fiscal software and a permanent internet connection; the self-service EFI portal (sep.tax.gov.me) and taxpayer portals under tax.gov.me provide registration and management [19][2]. There is no separate clearance credential for structured e-invoicing, because the platform is not live [23].

6.4 Offline / contingency mode

Fiscalization is designed around constant connectivity; where the connection is temporarily unavailable, the invoice is issued and the data submitted subsequently within the deadline set by the fiscalization rules (the exact offline window should be confirmed against the pravilnik) [19][22]. The IKOF, generated locally, allows the invoice to be issued and later matched on submission [22].

6.5 Buyer-side workflow

The buyer receives a fiscalised invoice bearing IKOF, JIKR and QR, and can verify that it was registered with the tax authority; a business buyer books the invoice and deducts input VAT where entitled, reporting it in the periodic VAT return [29][17]. There is no platform accept/reject step, because structured exchange is not yet in force [18].

6.6 QR / verification code requirements

Every fiscalised invoice carries a QR code and the fiscal identifiers (IKOF, JIKR); the QR encodes the data needed for the buyer to verify the invoice against the tax authority’s records, subject to a time limit for validity [29][22]. This is a live, mandatory feature of the fiscalization system [19].

Chapter 7 — Acceptable Formats (Fiscalization & Future e-Invoice)

7.1 Mandatory format(s) — fiscalization (live)

The fiscalization format is a digitally-signed XML invoice message transmitted to the tax authority’s fiscal service; every fiscalised invoice carries the IKOF, JIKR and QR code [19][22]. This is mandatory for all in-scope invoices [19].

7.2 Future structured e-invoice format

STATUS FLAG — Planned, not in force. The intended structured e-invoice format is EN 16931 with UBL 2.1, delivered through the licensed Serbian Sistem e-Faktura clearing model; a Montenegrin national CIUS has not been published, and this format is not yet a legal requirement [23][21].

7.3 Voluntary / legacy / hybrid formats

Structured B2B e-invoicing outside fiscalization is voluntary and bilateral (with buyer consent and an electronic signature); PDF and other formats remain valid for the commercial invoice provided the fiscalization obligation is separately met [18][19]. There is no hybrid PDF/XML national standard [23].

7.4 Attachments

Fiscalization concerns the transmission of structured invoice data rather than document attachments; a formal attachment framework will be defined, if at all, by the future structured-e-invoice platform, which is not yet legislated [22][23].

Chapter 8 — Technical & Functional Requirements

8.1 Invoice specifications (fiscalization)

A fiscalised invoice must carry the fiscal fields defined by the technical specification, reported to include: the fiscal invoice number, the exact issue time, an operator mark, the fiscalization obligor identification code (IKOF), the unique invoice identification code (JIKR), the payment method, the payment due date, and the buyer’s tax ID where relevant, alongside the ordinary VAT-invoice particulars [22]. The data is transmitted as signed XML [19].

8.2 E-reporting specifications

Fiscalization is itself the transaction-level e-reporting: invoice data reaches the tax authority in real time, so there is no separate SAF-T-type periodic file for invoices [19][18]. The periodic VAT return (PDV prijava) is filed to the Revenue and Customs Administration on the VAT law’s schedule; VAT is administered on that basis, with the fiscalization data available for cross-checking [17][14]. There is no EU-style recapitulative statement (Montenegro is outside the EU VAT area) [17].

8.3 Digital signature & integrity

Each fiscalised invoice is digitally signed with a qualified certificate before transmission, providing per-invoice authenticity and integrity; the tax authority’s returned JIKR confirms registration [19][22]. For voluntary structured B2B e-invoices, an electronic signature is used to ensure integrity and authenticity by agreement [18].

8.4 Processing mode & performance

Processing is real-time: the invoice is fiscalised (JIKR returned) at issuance over a permanent internet connection [19][22]. No published platform SLA was identified; the future structured-e-invoice platform’s performance parameters will follow its (unlegislated) specification [23].

Chapter 9 — Correction of Errors

9.1 Invoice corrections

Corrections are made by issuing a corrective fiscalised invoice (a credit/debit adjustment) that references the original invoice’s fiscal identifiers and is itself fiscalised in real time, so the correction reaches the tax authority immediately [19][22]. The VAT treatment of the correction follows the VAT Law (adjustment of the taxable base/VAT), and the corrected document is verifiable via its own IKOF/JIKR/QR [14][29].

9.2 E-reporting corrections

Because fiscalised data is transmitted in real time, a corrective fiscalised invoice updates the tax authority’s records at issuance; the periodic VAT return is corrected by filing an amended return under the VAT Law’s timing and penalty rules [17][14]. There is no separate corrective transaction file, since fiscalization already captures the correction [19].

Chapter 10 — Transmission & Workflow

10.1 Central platform

The central fiscalization platform is operated by the Uprava prihoda i carina (Revenue and Customs Administration), with the self-service EFI portal (sep.tax.gov.me) for taxpayers; the software was developed with Asseco SEE [1][2][34]. A separate structured-e-invoice platform (from Serbia’s Sistem e-Faktura) is planned but not live [23].

10.2 Transmission channels

Fiscalization data is transmitted from the taxpayer’s certified POS/ERP software to the tax authority’s fiscal service via API over the internet; smaller taxpayers can use the EFI portal / provided fiscalization software [19][2]. Structured B2B e-invoicing today is bilateral (by agreement) pending the national platform [18].

10.3 Accredited service providers

Fiscalization requires certified software and a qualified certificate rather than an accredited clearance-provider network; multiple commercial fiscalization/POS vendors serve the market, and Asseco SEE built the state system [19][34]. When the structured-e-invoice platform launches, it is expected to follow the centralized Serbian model (a state portal plus information intermediaries) rather than a Peppol access-point model [23].

10.4 Interoperability with B2G / Peppol / cross-border

B2G invoices are fiscalised through the same real-time system; there is no Peppol network role and no cross-border e-invoice exchange today, and cross-border goods flows are handled through customs (also administered by the Revenue and Customs Administration) [19][1]. Future EN 16931 alignment could enable interoperability, but that platform is not live [23].

10.5 Deadlines & timing

Fiscalization is real-time (at issuance); the periodic VAT return is filed on the VAT Law’s schedule (monthly for most taxpayers, by the 15th of the following month, per general Montenegrin VAT practice — confirm the current deadline against the VAT Law) [17][14]. There is no structured-e-invoice transmission deadline yet [23].

Chapter 11 — Self-Billing

Self-billing (the customer issuing the invoice in the supplier’s name by agreement) is a VAT-documentation arrangement under the general rules; any such invoice must still be fiscalised by the obligor responsible for it, carrying the IKOF, JIKR and QR [19][22]. Because there is no structured national e-invoice platform, the classic self-billing sub-questions do not have platform-level answers: legality rests on agreement and the ordinary invoicing/fiscalization rules; there is no central routing, no separate authorisation step beyond fiscalization, no prescribed structured self-billing flag, no special foreign-buyer restriction beyond the general rules, and buyer-side approval is governed by the agreed procedure [14][19]. Where a specific self-billing arrangement is contemplated, it should be confirmed against the VAT Law, the Fiscalization Law and current guidance [11][14].

Chapter 12 — Cross-Border & Special Scenarios

12.1 Cross-border supplies (imports/exports)

Montenegro is outside the EU VAT area, so there is no intra-Community-acquisition or EC Sales List regime; exports are zero-rated and imports are subject to import VAT collected at the border by the Revenue and Customs Administration (the merged tax and customs body) [17][1]. Domestic invoices for such transactions are still fiscalised [19].

12.2 Reverse charge on imported services

Recipients of certain services from abroad self-assess Montenegrin VAT (reverse charge) and account for it in the periodic VAT return under the VAT Law; this is a VAT-accounting mechanism, distinct from fiscalization [17][14].

12.3 Zero-rated & exempt supplies

Exports and certain international supplies are zero-rated; exempt activities follow the VAT Law’s exemption provisions (with the noted fiscalization exemptions for e.g. banking, insurance and some open-market agricultural sales) [17][19]. A December 2025 VAT-amendment bill reportedly proposes changes to zero rates and exemptions, and its status should be re-checked [30].

12.4 Triangulation & chain transactions

EU intra-Community triangulation/chain simplifications do not apply to Montenegro (outside the EU VAT area); multi-party cross-border flows are handled through the ordinary import/export and reverse-charge rules and the VAT return [17][14].

12.5 Local nuances

The new 15% intermediate VAT rate (accommodation, hospitality, books) is the most significant recent VAT-structure change; the Revenue and Customs Administration merger means one body administers VAT, fiscalization and customs [24][1]. These are administered through the VAT return and fiscalization, not a structured e-invoice platform [19].

Chapter 13 — Archiving & Retention

13.1 Central handling by the platform

The Revenue and Customs Administration holds the fiscalised invoice data transmitted in real time, giving it a central record of all invoices; taxpayers nonetheless retain their own books and fiscalised documents [19][22].

13.2 Mandatory archiving format

Fiscalised records are retained in their original electronic (signed XML) form together with the supporting accounting records [19]. There is no separate structured-e-invoice archive, since that platform is not live [23].

13.3 Retention period

Fiscalization and accounting records must be retained for 10 years in secure electronic form, per the fiscalization/accounting rules [19]. This aligns with the general Montenegrin bookkeeping retention obligation [17].

13.4 Storage location

Records must remain accessible to the tax authority; the public sources do not detail a specific cross-border-storage restriction beyond the general accessibility and retention duties, which should be confirmed against the fiscalization/accounting rules [19].

13.5 Integrity, authenticity, readability

Integrity and authenticity are assured by the qualified electronic signature on each fiscalised invoice and by the tax authority’s real-time registration (JIKR); the QR supports verification and legibility [19][22].

13.6 Audit accessibility

Audit access is substantially platform-based, because the tax authority already holds the real-time fiscalised data, complemented by on-demand production of the taxpayer’s records within the 10-year window [19][22].

Chapter 14 — Penalties & Enforcement

14.1 Graduated enforcement

Fiscalization is enforced by the Revenue and Customs Administration through inspections and fines for failing to fiscalise invoices or to use the fiscal service, with graduated amounts by taxpayer type; VAT enforcement runs separately under the VAT Law [19][16]. A December 2025 VAT-amendment bill reportedly revisits penalties [30].

14.2 Penalties by category

Reported fiscalization fines are: €8,000–€40,000 for legal entities, €2,000–€12,000 for entrepreneurs (sole traders), and €1,300–€4,000 for the responsible person/manager, for failure to fiscalise or to use the fiscal service; earlier reporting cited fines up to €40,000 for non-fiscalisation [19][16]. There is no structured-e-invoicing penalty regime, because structured e-invoicing is not yet mandatory [18][23].

14.3 Amounts & escalation

The fiscalization fines are fixed statutory ranges rather than a percentage of tax; general VAT non-compliance (late filing/payment, under-declaration) carries separate consequences under the VAT Law and the tax-procedure framework, and loss of input-VAT deduction for improperly documented purchases is the practical commercial exposure [19][17]. Exact article references should be taken from the consolidated Fiscalization Law and VAT Law [11][14].

14.4 References & links

The governing instruments are the Zakon o fiskalizaciji (Sl. list CG 46/2019, 73/2019, 8/2021) and its pravilnik, and the VAT Law (Zakon o PDV), administered by the Revenue and Customs Administration; named-source reporting (Paragraf.me, dddinvoices, PwC) provides the current amounts and interpretation [11][16][19][17].

Chapter 15 — Pre-Filled VAT Returns

15.1 Available today?

STATUS FLAG — Not documented. No pre-filled VAT return is identified in the public sources. The periodic VAT return is self-prepared and filed to the Revenue and Customs Administration; the real-time fiscalization data could in principle support pre-population in future, but no such feature is documented [17][19].

15.2 Fields pre-filled vs input required

All VAT-return fields are input by the taxpayer; the tax authority holds the fiscalised transaction data for cross-checking rather than to pre-populate the return, on the available sources [17][19].

15.3 Announced plans & timeline

No dated project for a pre-filled VAT return has been identified; any move in that direction would likely accompany the structured-e-invoice platform, which is not yet legislated [21][23].

15.4 Dependency on e-invoicing/e-reporting data

The building block for pre-population — real-time transaction data — already exists through fiscalization, so a future pre-filled return is technically feasible, but it is not a documented feature today [19].

15.5 Alignment with ViDA pre-filled provisions

ViDA does not bind Montenegro today; as an accession country it would align with the EU digital-reporting direction over time, which could enable pre-filled returns, but there is no legislated commitment [9][5].

Chapter 16 — ViDA / EU-Accession Readiness

16.1 Country position

MODEL NOTE — N/A today (not bound); an accession target. Montenegro is an EU candidate, not a member, so the EU VAT Directive and the ViDA package (Council Directive (EU) 2025/516, adopted 11 March 2025) do not yet apply. Alignment with the VAT acquis — including ViDA’s structured-e-invoicing and digital-reporting pillar — is a Chapter 16 accession requirement over time [5][10].

On the reporting dimension Montenegro is comparatively advanced (live real-time fiscalization of all invoices), but on structured e-invoicing it must still build an EN 16931 platform to converge with ViDA — which is precisely the motivation for licensing Serbia’s Sistem e-Faktura [19][23]. Chapter 16 (Taxation) was opened in 2015 and remains in negotiation; Montenegro provisionally closed five further chapters in December 2025 as the frontrunner candidate [6][7].

16.2 Alignment of national format & model

Montenegro’s fiscalization uses signed XML and national fiscal codes (IKOF/JIKR), which are not the EN 16931 / UBL structured-invoice standard that ViDA defaults to; the planned Serbian-model platform (EN 16931 / UBL 2.1) is the intended convergence route, but it is not yet in force [22][23]. There is therefore a format and model gap to close before ViDA-style structured e-invoicing and digital reporting would be met [23].

16.3 Cross-border digital reporting

ViDA’s Digital Reporting Requirements for intra-EU B2B (from 1 July 2030) do not extend to Montenegro while it is outside the EU; if Montenegro accedes, it would need to implement structured e-invoicing and DRR on the applicable EU timetable, and Sovos notes intra-Community reporting would apply only upon EU membership [18][5]. Montenegro has no EC Sales List obligation today [17].

16.4 Business implications

Businesses operating in Montenegro must run real-time fiscalization now, and should prepare for a future structured-e-invoice platform (EN 16931 / UBL) as accession-driven alignment proceeds; early adoption of EN 16931-capable systems is sensible future-proofing, but no structured mandate or ViDA obligation binds them yet [19][23].

Chapter 17 — Impact on SMEs and Startups

17.1 Onboarding

SMEs were brought into fiscalization during the 2021 rollout; every invoicing business must fiscalise, so the SME burden is real-time fiscalization compliance (certified software, certificate, connectivity), not structured e-invoicing (which is not yet mandatory) [19][18].

17.2 Free / low-cost tools & education

The Revenue and Customs Administration provides the self-service EFI portal and fiscalization tooling, and multiple low-cost commercial POS/fiscalization solutions serve small businesses; qualified certificates are obtained from recognised providers [2][19]. A free national e-invoicing portal would follow the (planned) structured-e-invoice platform [23].

17.3 Simplified regimes & thresholds

The VAT-registration threshold is €30,000 (raised from €18,000 in 2021), keeping the smallest businesses outside VAT (though fiscalization can still apply to invoicing) [25][17]. The new 15% VAT rate raised costs in hospitality/accommodation and books from 2025 [24].

17.4 Subsidies, tax credits, grants

No dedicated e-invoicing subsidy was identified; the state EFI portal and low-cost software are the effective support for fiscalization [2][19].

17.5 Compliance costs

For SMEs the principal cost is certified fiscalization software, a qualified certificate and reliable connectivity; there is no structured-e-invoicing integration cost yet, though one would arise when the national platform launches [19][23].

17.6 Cash-flow & operational benefits

Real-time fiscalization gives cleaner records and instant tax-authority validation, and a future structured-e-invoice platform would add automation and faster processing for B2B [19][23].

17.7 Net administrative burden vs simplification

Fiscalization is a real ongoing burden (per-invoice real-time reporting) but is now embedded; the structured-e-invoice platform, when it arrives, would raise the burden and the automation benefits together [19][23].

17.8 Market & competitive impact

Fiscalization applies to all obligors, so there is no market-exclusion effect; the practical driver for structured e-invoicing will be the future mandate and EU-accession alignment [18][23].

17.9 Official assessments of SME readiness

No separate SME-readiness assessment for a structured e-invoicing mandate has been published, consistent with the mandate not yet existing; fiscalization is already widely embedded [18][21].

Chapter 18 — Practical Implementation Considerations

18.1 ERP / finance-system impacts

ERPs and POS systems must integrate with the fiscalization fiscal service (certified software producing signed XML with IKOF and obtaining the JIKR in real time); global ERPs (SAP, Oracle, Microsoft Dynamics) connect via local fiscalization middleware, and the state system was built with Asseco SEE [19][34]. A future structured-e-invoice platform would add an EN 16931 / UBL integration layer [23].

18.2 Master-data prerequisites

Key prerequisites are a valid PIB/tax ID, a qualified electronic-signature certificate, correct operator and business-unit configuration for the fiscal codes, and buyer tax IDs where relevant; there is no Peppol ID or structured-platform credential to provision yet [22][19].

18.3 Common pitfalls

Documented pitfalls concentrate on fiscalization: connectivity gaps (real-time submission), certificate lifecycle (issuance/renewal), correct generation of the IKOF and handling of the returned JIKR, and ensuring the QR appears on the buyer’s invoice; a further pitfall is conflating live fiscalization with the not-yet-legislated structured e-invoice platform [22][19][23].

18.4 Vendor / service-provider landscape

The fiscalization market is served by certified POS/fiscalization software vendors and the state system (built with Asseco SEE); for the future structured platform, the intended base is Serbia’s Sistem e-Faktura, so the provider model is expected to be a central state portal plus information intermediaries rather than Peppol access points [34][23]. Global VAT-compliance vendors (Sovos, Pagero, EDICOM, Fiscal Solutions) track the market [18].

18.5 Governance & internal control

Internal controls should ensure certified fiscalization for every in-scope invoice (real-time JIKR, correct IKOF/QR), certificate lifecycle management, reconciliation of fiscalised data to the VAT return, and a watching brief on the structured-e-invoice legislation so that ERP roadmaps can accommodate an EN 16931 platform when adopted [19][23].

Chapter 19 — Summary & Key Takeaways

19.1 Scope

Real-time fiscalization of all invoices (B2C/B2B/B2G) is live and mandatory; a structured B2B e-invoicing platform is in preparation and not yet legislated [19][23].

19.2 Format

Fiscalization: signed XML with IKOF + JIKR + QR. Future structured e-invoice: EN 16931 / UBL 2.1 (Serbian-model platform); no national CIUS yet [22][23].

19.3 Timeline

Fiscalization live 1 Jan 2021, full enforcement 1 Jun 2021; Serbia e-Faktura licence Oct 2023; 15% VAT from 1 Jan 2025; structured e-invoicing date unconfirmed (2025–2027) [19][23][24][21].

19.4 How it works

CTC-type real-time fiscalization — signed XML sent at issuance, JIKR returned, IKOF/JIKR/QR on the buyer’s invoice; VAT administered on the periodic return [19][22].

19.5 Key obligations

Fiscalise every in-scope invoice in real time with a qualified certificate; retain records 10 years; file the periodic VAT return; verify supplier fiscalization where relevant [19][22][17].

19.6 Main risks

Conflating fiscalization with the future e-invoice platform; unconfirmed structured-e-invoicing timeline; and primary-source verification of some pravilnik/gazette references [18][21][30].

19.7 SME implications

Fiscalization software, certificate and connectivity costs; EFI portal support; €30,000 VAT threshold; a future structured platform would add integration [2][25][23].

19.8 ViDA / accession readiness

N/A today (not bound); accession-driven convergence to the VAT acquis and ViDA; format/model gap between fiscalization XML and EN 16931 to close [5][23].

19.9 Critical dates & next steps (actionable)

Now (live): fiscalise every in-scope invoice in real time (IKOF/JIKR/QR); manage certificates and connectivity; retain records 10 years [19][22].
Watch: the Official Gazette for the structured B2B e-invoicing law (Serbian-model, EN 16931/UBL) — dates unconfirmed (2025–2027) [21][23].
Prepare: EN 16931-capable ERP output for the future platform; monitor the Dec-2025 VAT-amendment bill and Chapter 16 accession progress [23][30][7].

Chapter 20 — Official References & Sources

All URLs were checked during research on the information cut-off date, 6 July 2026. Sources flagged [>12 months] are older than 12 months and used for historical/background context. A key distinction is disclosed throughout: real-time fiscalization is LIVE, whereas a structured B2B e-invoicing platform is only in preparation and not yet legislated. Numbering [1]–[36] is stable across the booklet; [37] is the verification note.

20.1 Government & EU institutions

[1] Revenue and Customs Administration (Uprava prihoda i carina Crne Gore). Government of Montenegro (gov.me), accessed 2026. https://www.gov.me/en/revenue-and-customs-administration

[2] Samouslužni EFI portal (self-service fiscalization portal). Uprava prihoda i carina (tax.gov.me), accessed 2026. https://sep.tax.gov.me/self-care/

[3] Ministry of Finance (Ministarstvo finansija). Government of Montenegro (gov.me), accessed 2026. https://www.gov.me/en/ministry-of-finance

[4] Montenegro — enlargement / accession. European Commission — Enlargement, accessed 2026. https://enlargement.ec.europa.eu/countries/montenegro_en

[5] Screening report — Montenegro — Chapter 16 Taxation. European Commission — Enlargement, 2015. https://enlargement.ec.europa.eu/screening-report-montenegro-chapter-16-taxation_en [>12 months]

[6] Chapter 16 – Taxation (Poglavlje 16 – Porezi). EUME (EU integration office, Montenegro), accessed 2026. https://www.eu.me/en/poglavlje-16-porezi/

[7] EU and Montenegro provisionally close another five chapters (16 Dec 2025). Council of the EU (Consilium), 16 Dec 2025. https://www.consilium.europa.eu/en/press/press-releases/2025/12/16/eu-and-montenegro-provisionally-close-another-five-chapters-in-accession-negotiations/

[8] Montenegro 2025 Report (enlargement package). European Commission — Enlargement, 2025. https://enlargement.ec.europa.eu/document/download/9ae69ea7-81d6-4d6a-a204-bd32a379d51d_en?filename=montenegro-report-2025.pdf

[9] VAT in the Digital Age (ViDA) — EU scope. European Commission — Taxation and Customs Union, accessed 2026. https://taxation-customs.ec.europa.eu/taxation/vat/vat-digital-age-vida_en

[10] Council Directive (EU) 2025/516 — VAT in the Digital Age (ViDA). EUR-Lex, 11 Mar 2025. https://eur-lex.europa.eu/eli/dir/2025/516/oj/eng

20.2 Legislation (Službeni list Crne Gore)

[11] Zakon o fiskalizaciji u prometu proizvoda i usluga (consolidated, II izdanje). Katalog propisa Crne Gore, 2021. https://www.katalogpropisa.me/wp-content/uploads/2021/04/Zakon-o-fiskalizaciji-u-promteu-proizvoda-i-usluga-Odlomak-II-izdanje.pdf [>12 months]

[12] Zakon o fiskalizaciji u prometu proizvoda i usluga (document). Government of Montenegro (gov.me), accessed 2026. https://www.gov.me/dokumenta/6a29403c-2397-4107-a591-7aac91c38ecf

[13] Zakon o fiskalizaciji u prometu proizvoda i usluga (full text). me.propisi.net, accessed 2026. https://me.propisi.net/zakon-o-fiskalizaciji-u-prometu-proizvoda-i-usluga/

[14] Zakon o porezu na dodatu vrijednost (VAT Law, consolidated). Paragraf.me, consolidated (2021). https://www.paragraf.me/propisi-crnegore/zakon-o-porezu-na-dodatu-vrijednost.html [>12 months]

[15] Fiscalization — pre-launch notice (Sl. list CG 46/2019, 73/2019; 1 Jan 2021). Paragraf.me, 15 Oct 2020. https://www.paragraf.me/dnevne-vijesti/15102020/15102020-vijest1.html [>12 months]

[16] Fiscalization penalties (fines up to €40,000). Paragraf.me, 8 Oct 2020. https://www.paragraf.me/dnevne-vijesti/08102020/08102020-vijest2.html [>12 months]

20.3 Advisor & technology publications

[17] Montenegro — Other taxes (VAT rates, threshold, administration). PwC Worldwide Tax Summaries, accessed 2026. https://taxsummaries.pwc.com/montenegro/corporate/other-taxes

[18] Montenegro e-invoicing (fiscalization mandatory; B2B not mandated; Serbia agreement). Sovos, accessed 2026. https://sovos.com/vat/tax-rules/montenegro-e-invoicing/

[19] Fiscalization and real-time reporting in Montenegro (model; JIKR; XML; penalties; 10-year archiving). dddInvoices, 13 Apr 2026. https://dddinvoices.com/learn/fiscalization-and-real-time-reporting-in-montenegro

[20] Electronic fiscalization and e-invoicing in Montenegro (status; planned dates unconfirmed). dddInvoices, 25 May 2026. https://dddinvoices.com/learn/e-invoicing-montenegro

[21] Montenegro — e-invoicing country profile (B2C fiscalization since 2021; B2B planned). e-invoice.app, 13 Mar 2026. https://www.e-invoice.app/country/ME

[22] Montenegro fiscalization requirements (IKOF; JIKR; QR; mandatory fiscal fields; certificate). InvoiceDataExtraction, 31 Mar 2026 (upd. 8 May 2026). https://invoicedataextraction.com/blog/montenegro-fiscalization-requirements

[23] Montenegro prepares B2B e-invoicing (Serbia Sistem e-Faktura licence; EN 16931 / UBL; CTC). vatcalc.com, 4 Nov 2023. https://www.vatcalc.com/montenegro/montenegro-prepares-b2b-e-invoicing/ [>12 months]

[24] Montenegro — new 15% reduced VAT rate (from 1 Jan 2025). vatcalc.com, 3 Jan 2025. https://www.vatcalc.com/montenegro/montenegro-new-15-reduced-vat-rate/ [>12 months]

[25] Montenegro raises VAT registration threshold to €30,000 (4 Jun 2021). vatcalc.com, 6 Apr 2021 (upd. Sep 2024). https://www.vatcalc.com/montenegro/montenegro-raises-vat-registration-threshold-to-e35000/ [>12 months]

[26] First steps towards a B2B e-invoicing mandate in Montenegro (Serbia agreement). 1stopVAT, 9 Nov 2023. https://1stopvat.com/first-steps-towards-b2b-e-invoicing-mandate-in-montenegro/ [>12 months]

[27] Montenegro–Serbia e-invoicing cooperation. Fiscal Solutions, 2023. https://www.fiscal-requirements.com/news/2613 [>12 months]

[28] Montenegro introduces 15% VAT rate (validated Oct 2024). Fiscal Solutions, 23 Oct 2024. https://www.fiscal-requirements.com/news/3290 [>12 months]

[29] Receipt verification in Montenegro’s fiscalization system (QR; methods; validity window). VATupdate.com, 22 Sep 2023. https://www.vatupdate.com/2023/09/22/receipt-verification-in-montenegro-fiscalization-system-methods-and-time-limit-for-validity/ [>12 months]

[30] Montenegro proposes VAT amendments (PE rules, zero rates, exemptions, registration, penalties). VATupdate.com, 6 Dec 2025. https://www.vatupdate.com/2025/12/06/montenegro-proposes-vat-amendments-new-pe-rules-zero-rates-exemptions-registration-and-penalties/

[31] VAT rates updates in Montenegro from January 2025 (15% rate). VATupdate.com, 23 Oct 2024. https://www.vatupdate.com/2024/10/23/vat-rates-updates-in-montenegro-from-january-2025/ [>12 months]

[32] Montenegro MoF posts bill on amendments to VAT Act. Bloomberg Tax, Dec 2025. https://news.bloombergtax.com/daily-tax-report-international/montenegro-mof-posts-bill-on-amendments-to-vat-act

[33] Fazno primjenjivati Zakon o fiskalizaciji (phased application). Bankar.me, 17 Oct 2020. https://www.bankar.me/2020/10/17/fazno-primjenjivati-zakon-o-fiskalizaciji/ [>12 months]

[34] Samouslužni EFI portal available to users (fiscalization; Asseco SEE). MINA Business, 2021. https://mina.news/mina-business-ekonomske-vijesti-iz-crne-gore/korisnicima-od-danas-dostupan-samousluzni-efi-portal/ [>12 months]

[35] Global e-invoicing and digital VAT reporting mandates (Montenegro entry). vatcalc.com, accessed 2026. https://www.vatcalc.com/global/global-e-invoicing-and-digital-vat-reporting-mandates/

[36] Montenegro — e-invoicing regulatory updates. Pagero / Thomson Reuters, accessed 2026. https://www.pagero.com/compliance/regulatory-updates/montenegro

Montenegro: E-Invoicing & E-Reporting Guide