Briefing Document & Podcast: E-Invoicing and E-Reporting in Denmark

Executive position

Denmark does not currently have a general mandatory domestic B2B e-invoicing or real-time VAT reporting regime. Its framework instead combines:

• Mandatory structured e-invoicing for supplies to Danish public bodies.
• Mandatory digital bookkeeping for most Danish businesses.
• A requirement that in-scope bookkeeping systems support issuing, receiving and storing structured e-invoices.
• SAF-T functionality for exchanging bookkeeping data.
• A voluntary e-invoicing adoption campaign, now scheduled to begin on 1 March 2027.
• A planned migration from OIOUBL and the current Peppol specification to one Peppol-based Danish invoice specification by approximately mid-2029.
• Preparation for the EU ViDA cross-border digital reporting requirements beginning on 1 July 2030. [ec.europa.eu], [kpmg.com], [nemhandel.dk], [nemhandel.dk]

The central distinction is therefore:

Mandatory digital bookkeeping and e-invoicing capability are not the same as mandatory B2B e-invoice exchange.

A business may be required to use a compliant digital bookkeeping system capable of exchanging e-invoices while remaining legally able, for ordinary domestic B2B transactions, to send an invoice in another permissible form, including PDF. The March 2027 initiative promotes e-invoicing through default settings and automatic NemHandel registration, but preserves an opt-out and does not establish a universal B2B mandate. [skat.dk], [kpmg.com], [erhvervsstyrelsen.dk]

1. Introduction and Country Context

1.1 Denmark’s tax digitalisation journey

Denmark has been an early adopter of structured e-invoicing:

• Mandatory B2G e-invoicing was introduced in 2005.
• NemHandel became the national infrastructure for exchanging structured business documents.
• OIOUBL was developed as a Danish implementation of Universal Business Language.
• Denmark subsequently connected its environment to Peppol and adopted EN 16931-compatible invoicing.
• The Bookkeeping Act, Act No. 700 of 24 May 2022, expanded digitalisation from invoice exchange to the wider bookkeeping lifecycle.
• During 2024–2026, mandatory digital bookkeeping was phased in for different categories of businesses.
• Denmark is now moving toward a common Peppol-based invoice specification ahead of ViDA. [retsinformation.dk], [nemhandel.dk], [nemhandel.dk]

1.2 Policy objectives

The Danish programme is broader than VAT fraud control alone. Its objectives include:

• Modernising bookkeeping and administrative reporting.
• Strengthening transaction and audit trails.
• Preventing the deletion, alteration or loss of accounting records.
• Facilitating automated VAT, statistical and annual financial reporting.
• Increasing structured e-invoice adoption.
• Making it easier to exchange accounting information between businesses, advisors and public authorities.
• Improving interoperability with European e-invoicing standards. [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk]

1.3 International positioning

Denmark is:

• An early mover for B2G e-invoicing.
• An advanced digital-bookkeeping jurisdiction.
• Not yet a domestic B2B continuous transaction control jurisdiction.
• Moving away from a predominantly national OIOUBL approach toward Peppol-based interoperability.
• Timing the planned completion of its Peppol migration for approximately one year before the EU ViDA cross-border DRR start date of 1 July 2030. [ec.europa.eu], [kpmg.com], [nemhandel.dk]

1.4 EU derogation

No Danish derogation from Articles 218 or 232 of the VAT Directive is currently required for a universal domestic B2B mandate because Denmark has not enacted such a mandate. B2G requirements are supported by the EU public-procurement e-invoicing framework, including Directive 2014/55/EU and Danish implementing rules. [ec.europa.eu], [globalindi…gement.com]

2. Regulatory Framework

2.1 Primary legislation

The principal framework is the Bookkeeping Act, Act No. 700 of 24 May 2022. It governs:

• Businesses established in Denmark.
• Business activities carried out in Denmark by foreign enterprises.
• Certain taxable or reporting entities that fall outside the first two categories.
• Bookkeeping, transaction trails, control trails, supporting documentation and digital bookkeeping systems.
• Requirements applicable to providers of standard digital bookkeeping systems. [retsinformation.dk], [retsinformation.dk]

The Act entered into force progressively. Its legal scope is wider than VAT registration alone. However, the date on which a particular enterprise becomes subject to mandatory digital bookkeeping depends on its legal form, financial-reporting status, turnover and type of accounting system. [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk]

VAT invoice content, credit-note treatment, record retention and VAT-return obligations continue to be governed by the Danish VAT Act and related VAT rules. The Bookkeeping Act does not replace those substantive VAT requirements. [skat.dk], [info.skat.dk]

2.2 Implementing regulations

Important instruments include:

• Executive Order No. 95 of 26 January 2023, which brought specified provisions of the Bookkeeping Act into force and established initial application dates for providers of standard bookkeeping systems.
• Executive Order No. 205 of 29 February 2024, which establishes requirements for non-registered or customised digital bookkeeping systems.
• The separate regulatory requirements governing registered standard bookkeeping systems.
• The B2G e-invoicing rules associated with NemHandel and the Danish implementation of Directive 2014/55/EU. [erhvervsstyrelsen.dk], [retsinformation.dk], [ec.europa.eu]

2.3 Guidance, consultations and recent announcements

Recent official developments include:

• Publication of SAF-T 2.0 in February 2026.
• A March 2026 strategy proposing migration to a single Peppol-based invoice specification.
• Completion of the Peppol migration consultation in May 2026.
• A July–August 2026 consultation on automatic NemHandel enrolment and stronger security requirements for registered bookkeeping systems.
• Deferral of the related voluntary e-invoicing campaign and provider obligations to 1 March 2027. [erhvervsstyrelsen.dk], [nemhandel.dk], [nemhandel.dk], [kpmg.com]

The 1 March 2027 date is important. Earlier materials referred to 1 July 2026 or 1 January 2027. Those dates have been superseded for the voluntary campaign and associated provider changes. [kpmg.com], [peppolnews.com], [kpmg.com]

2.4 Supranational legal basis

The Danish B2G environment reflects:

• Directive 2014/55/EU.
• EN 16931.
• Peppol interoperability standards.
• The EU ViDA framework adopted in 2025, particularly the cross-border e-invoicing and digital reporting changes scheduled from 1 July 2030. [ec.europa.eu], [nemhandel.dk], [nemhandel.dk]

3. Scope of the Mandate

3.1 Transactions in scope

Domestic B2B

• There is no general obligation as of 27 September 2026 to exchange all domestic B2B invoices electronically.
• The bookkeeping system of an in-scope business must nevertheless be capable of sending, receiving and storing structured e-invoices.
• From 1 March 2027, registered bookkeeping systems are expected to make e-invoicing a prominent or default option and automatically enrol eligible users in NemHandel unless they opt out.
• Users remain able to opt out or choose another legally acceptable delivery method. [ec.europa.eu], [kpmg.com], [erhvervsstyrelsen.dk]

Domestic B2G

• Structured e-invoicing is mandatory for suppliers invoicing Danish public bodies.
• Invoices are exchanged using NemHandel or interoperable Peppol channels.
• EN 16931-compatible formats are accepted.
• Public-sector recipients use electronic identifiers, commonly EAN/GLN identifiers, for routing. [ec.europa.eu], [nemhandel.dk], [globalvatc…liance.com]

Domestic B2C

• There is no general B2C structured e-invoicing mandate.
• Ordinary VAT invoicing and retail-receipt rules continue to apply.
• Simplified invoices or till receipts may be used where the VAT rules permit.
• No general QR-code fiscal receipt system comparable with centralised clearance regimes has been announced. [ec.europa.eu], [skat.dk], [globalvatc…liance.com]

Intra-EU supplies and acquisitions

These transactions are not currently required to pass through NemHandel merely because one party is Danish:

• Intra-EU supplies are reported through the VAT return and, where applicable, the EU Sales List.
• Intra-EU acquisitions are reported in the relevant VAT-return fields and are subject to reverse-charge accounting.
• Structured e-invoicing may be used voluntarily, particularly where both parties are reachable through Peppol.
• Cross-border digital reporting will change materially under ViDA from 1 July 2030. [skat.dk], [skat.dk], [skat.dk]

Imports and exports

• Import invoices are not subject to a Danish e-invoice clearance process.
• Export invoices are not required to pass through NemHandel.
• Imports, exports and cross-border purchases must be reflected in the relevant VAT accounting and VAT-return fields.
• Supporting customs and transport evidence remains necessary where zero rating is claimed. [skat.dk], [skat.dk], [skat.dk]

Other cross-border B2B transactions

There is no current Danish real-time reporting obligation based on invoice-by-invoice submission to the tax authority. Existing VAT returns and EU Sales Lists remain the principal periodic VAT-reporting mechanisms. [ec.europa.eu], [skat.dk]

3.2 Special transactions

Self-billing

Self-billing remains permissible under the Danish VAT rules, subject to the normal conditions governing agreements, control, invoice content and acceptance. Self-billed invoices may be exchanged electronically where the parties’ systems support it, but there is no current rule requiring all domestic B2B self-billing documents to pass through NemHandel. OIOUBL documentation contains specific support for self-billing document workflows. [oioubl-dem…mhandel.dk], [info.skat.dk]

Triangulation and chain transactions

No separate domestic e-invoicing platform rule has been published specifically for triangulation or chain transactions. Their VAT treatment continues to be determined under normal Danish and EU VAT rules. Relevant invoices may be structured voluntarily, while VAT return and EU Sales List obligations continue to apply. [skat.dk], [skat.dk], [skat.dk]

Special VAT regimes

No general exclusion or separate mandatory e-invoice workflow has been published for:

• Travel-agent margin schemes.
• Second-hand-goods schemes.
• Investment gold.
• Farmers’ arrangements.
• Financial or insurance services.
• Other exempt activities.

The VAT treatment and required invoice descriptions must still be reflected correctly. Whether a document must be structured depends primarily on whether it is B2G or is voluntarily exchanged electronically. [skat.dk], [globalvatc…liance.com]

3.3 Exclusions

The following are outside a general mandatory B2B e-invoicing regime because no such regime currently exists:

• Domestic B2B invoices other than those covered by specific public-sector or contractual requirements.
• B2C receipts.
• Intra-EU and export invoices.
• Import supplier invoices.
• Non-VAT documents.
• OSS and IOSS transactions, except insofar as ordinary bookkeeping and record-retention requirements apply.

These are not necessarily excluded from digital bookkeeping. They may still have to be recorded and their supporting documentation stored electronically by an in-scope business. [ec.europa.eu], [erhvervsstyrelsen.dk], [info.skat.dk]

4. Taxable Persons in Scope

4.1 Established entities

The Bookkeeping Act broadly covers Danish commercial enterprises. Mandatory digital bookkeeping has been phased in for:

• Companies required to file annual reports.
• Businesses using registered standard bookkeeping systems.
• Businesses using customised or non-registered systems.
• Businesses not required to file annual reports where annual net turnover exceeds DKK 300,000 in two consecutive years.
• Sole traders and other accounting-class-A businesses meeting the turnover condition. [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk], [kpmg.com]

4.2 Non-established entities

The position requires careful distinction:

• A foreign enterprise with a Danish permanent establishment or relevant fixed establishment may fall within the digital-bookkeeping requirements.
• A foreign enterprise merely registered for Danish VAT, without a Danish permanent or fixed establishment, remains subject to general Danish VAT and record-keeping requirements.
• According to KPMG’s analysis, a business that is solely VAT registered and has no Danish permanent or fixed establishment is not yet subject to mandatory digital bookkeeping, and no implementation date has been set for that category. [kpmg.com], [erhvervsstyrelsen.dk]

4.3 Voluntary participation

Businesses may voluntarily:

• Register for NemHandel.
• Use Peppol services.
• Issue structured B2B e-invoices.
• Receive e-invoices through their accounting platform.
• Map their ledgers and VAT codes to the public standard chart of accounts.
• Adopt SAF-T functionality before mandatory system milestones. [erhvervsstyrelsen.dk], [kpmg.com], [erhvervsstyrelsen.dk]

4.4 Sector-specific considerations

Financial businesses and other entities outside the ordinary annual-reporting population may nevertheless fall within the digital-bookkeeping rules. No comprehensive sector exemption from the Bookkeeping Act can be assumed. The legal entity, Danish presence, accounting obligation and turnover must be assessed separately. [kpmg.com], [erhvervsstyrelsen.dk]

5. Implementation Timeline

5.1 Legislative history

• 6 April 2022: Bookkeeping Bill introduced.
• 24 May 2022: Bookkeeping Act No. 700 adopted.
• 1 July 2022: The Act entered into force, with later provisions phased in separately.
• 1 February 2023: Executive Order No. 95 entered into force.
• 2024–2026: Mandatory digital bookkeeping phased in according to entity and system type. [retsinformation.dk], [retsinformation.dk], [retsinformation.dk]

5.2 Digital-bookkeeping phases

• Businesses required to file annual reports and using registered systems entered the regime first.
• Annual-reporting businesses using their own or non-registered systems followed for financial years beginning on or after 1 January 2025.
• Businesses not required to file annual reports, with turnover exceeding DKK 300,000 in two consecutive years, entered from financial years beginning on or after 1 January 2026.
• Responsibility for compliance lies with the provider for registered systems and with the business for non-registered systems. [kpmg.com], [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk]

5.3 E-invoicing adoption campaign

The latest position is:

• The voluntary campaign will begin on 1 March 2027.
• Registered bookkeeping-system providers must notify users of planned NemHandel registration.
• Users will have four weeks to opt out.
• Providers must subsequently register non-opt-out users.
• Systems must identify when a recipient is registered in NemHandel and present structured e-invoicing as an obvious option.
• This does not convert domestic B2B e-invoicing into a universal legal mandate. [kpmg.com], [erhvervsstyrelsen.dk]

5.4 Peppol migration

Current planning includes:

• Common-specification concept finalisation around January 2027.
• Release-candidate work during 2027.
• Transition beginning around mid-2028.
• Full migration or phase-out of the existing parallel invoice formats by approximately May or mid-2029.
• Development of a Danish NemHandel e-Invoice/NemHandel BIS 4 specification based on the future Peppol BIS 4 architecture, with limited national adaptations. [peppolnews.com], [vatupdate.com], [globalindi…gement.com], [nemhandel.dk]

Peppol BIS 4 is not yet a fully released production standard available for immediate implementation. Businesses should not treat the 2029 target architecture as the current mandatory format. [globalindi…gement.com], [nemhandel.dk]

5.5 SAF-T milestones

• SAF-T 2.0 was published in February 2026.
• The Danish Business Authority’s September 2026 page refers to registered systems supporting version 2.1 from 1 January 2027.
• The most recent official specification and change log should therefore be used rather than relying solely on the original February announcement.
• Non-registered systems may continue with the more limited version 1.0/header requirement until further rules are issued. [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk]

5.6 Grace periods and postponements

No universal penalty-free period exists for a B2B e-invoicing mandate because no such mandate is currently in place. The principal recent postponement is the movement of the voluntary campaign and the associated registered-system requirements to 1 March 2027. [kpmg.com], [erhvervsstyrelsen.dk]

6. How the Operating Model Works

6.1 Model classification

Denmark currently operates a decentralised interoperability/post-audit model, not a tax-authority clearance model:

• Businesses create invoices in their accounting or ERP systems.
• Structured invoices are routed through NemHandel or Peppol service providers.
• Providers exchange documents using network participant identifiers.
• The tax authority does not approve or clear each invoice before legal issuance.
• VAT is reported periodically through the VAT return and EU Sales List.
• SAF-T facilitates standardised data extraction and future automated reporting but is not presently a continuous invoice-reporting system. [ec.europa.eu], [nemhandel.dk], [erhvervsstyrelsen.dk]

6.2 Invoice lifecycle

1. Creation: The supplier creates the invoice in its ERP or digital bookkeeping system.
2. Formatting: For a structured e-invoice, the system formats the data as OIOUBL or the applicable Peppol BIS profile.
3. Recipient lookup: The sender or service provider checks the recipient’s NemHandel/Peppol registration and electronic address.
4. Transmission: The invoice is transmitted through a NemHandel or Peppol access point.
5. Validation: Schema and business-rule checks may be applied. A technically invalid document can be rejected.
6. Delivery: The recipient’s access point or bookkeeping system receives the invoice.
7. Business processing: The buyer performs accounting, purchase-order and commercial validation.
8. Archiving: Both parties retain the relevant invoice and bookkeeping evidence.
9. VAT reporting: VAT figures remain taxpayer-reported through periodic returns rather than automatically determined through invoice clearance. [nemhandel.dk], [oioubl-dem…mhandel.dk], [oioubl.nemhandel.dk], [skat.dk]

6.3 Authentication and access

Access methods depend on the selected bookkeeping system and provider. NemHandel routing normally relies on registered participant identifiers and service-provider infrastructure. Public digital services may use Danish business authentication mechanisms, but no single prescribed per-invoice qualified electronic signature is required. [erhvervsstyrelsen.dk], [nemhandel.dk], [globalvatc…liance.com]

6.4 Contingency mode

Because the model is not based on tax-authority clearance, there is no nationally prescribed clearance-platform offline code or delayed fiscal-authorisation procedure. Businesses must maintain business continuity, preserve the transaction trail and send or re-send documents when systems become available. Provider-specific retry and failure-handling procedures may apply. [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk]

6.5 Buyer workflow

• Buyer acceptance is not required by the Danish tax authority to make an ordinary invoice legally issued.
• The recipient may reject an invoice for technical or commercial reasons.
• Invoice-response documents can be used in supported OIOUBL workflows.
• Commercial approval should not be confused with tax-authority clearance. [oioubl-dem…mhandel.dk], [oioubl.nemhandel.dk]

6.6 QR codes

No general QR-code or fiscal-verification-code requirement currently applies to Danish B2B or B2G e-invoices. [ec.europa.eu], [globalvatc…liance.com]

7. Acceptable E-Invoice Formats

7.1 Current formats

The current structured formats include:

• OIOUBL.
• Peppol BIS Billing 3.0.
• Relevant EN 16931-compatible profiles for public procurement.

Both OIOUBL and Peppol formats use XML structures deriving from UBL, although they apply different business rules and national requirements. [ec.europa.eu], [nemhandel.dk], [oioubl-dem…mhandel.dk]

7.2 Future common format

Denmark intends to replace the two-format environment with one common NemHandel e-Invoice specification based on Peppol BIS 4/PINT principles and limited Danish national extensions. Full migration is targeted for mid-2029. [peppolnews.com], [globalindi…gement.com], [nemhandel.dk]

7.3 PDF and paper

• PDF and paper remain generally possible for transactions not subject to B2G structured e-invoicing or a contractual e-invoicing requirement.
• SKAT guidance states that invoices need to be issued in a non-editable format, with PDF provided as an example in ordinary bookkeeping guidance.
• A PDF is not a structured e-invoice for NemHandel or EN 16931 purposes. [skat.dk], [globalvatc…liance.com]

7.4 Attachments

Attachments are technically supported in relevant structured-invoice implementations, subject to syntax, size and provider rules. Supplementary attachments do not replace mandatory structured invoice data. Detailed limits should be validated against the applicable OIOUBL or Peppol specification at implementation time. [oioubl-dem…mhandel.dk], [oioubl.nemhandel.dk]

8. Technical and Functional Requirements

8.1 Invoice data

A normal Danish VAT invoice generally includes:

• Sequential invoice number.
• Invoice date.
• Supplier name and address.
• Supplier CVR/SE or VAT number.
• Customer name and address.
• Description, type and quantity of goods or services.
• Delivery or performance date if different from the invoice date.
• Unit price exclusive of VAT.
• Discounts or price reductions not included in the unit price.
• Taxable amount.
• Applicable VAT rate.
• VAT amount.
• Appropriate exemption or reverse-charge wording where relevant. [skat.dk], [globalvatc…liance.com]

Structured invoices are additionally subject to:

• XML schema validation.
• EN 16931 and profile-specific business rules.
• Code-list validation.
• Arithmetic checks.
• Endpoint identifier requirements.
• VAT-category and exemption-reason rules. [oioubl-dem…mhandel.dk], [oioubl.nemhandel.dk], [oioubl-dem…mhandel.dk]

8.2 E-reporting specifications

Denmark does not currently require invoice data to be reported continuously or in real time to SKAT. Relevant reporting consists of:

• Periodic VAT returns.
• EU Sales Lists for qualifying intra-EU supplies.
• Other statistical or customs filings where applicable.
• SAF-T capability for sharing accounting data.
• Production of bookkeeping data for authorities when legally requested. [ec.europa.eu], [erhvervsstyrelsen.dk], [skat.dk]

SAF-T 2.x supports transaction-level bookkeeping data, including ledgers, accounts, tax codes and associated accounting information. Registered bookkeeping systems must support the latest prescribed version from 1 January 2027. This is a system-capability and data-exchange obligation, not yet a recurring automatic submission of every invoice to SKAT. [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk]

8.3 Integrity and authenticity

Denmark does not generally mandate a qualified electronic signature on each e-invoice. Integrity and authenticity are supported through:

• Controlled accounting-system access.
• Transaction and control trails.
• Prevention of unauthorised alteration or deletion.
• Secure backup.
• Structured network transmission.
• Retention of supporting records. [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk], [pikon.com]

8.4 Processing speed

NemHandel/Peppol supports rapid machine-to-machine transmission, but this is not real-time tax clearance. No general T+1 invoice-reporting deadline applies under the current Danish system. [ec.europa.eu], [nemhandel.dk]

9. Corrections

9.1 E-invoice corrections

An issued invoice should not simply be overwritten. Corrections should preserve the original audit trail and normally use:

• A credit note referencing the original invoice.
• A replacement or supplementary invoice where appropriate.
• Correct VAT amounts and reason for the correction.
• A new structured transmission where the parties use NemHandel or Peppol. [skat.dk], [oioubl-dem…mhandel.dk], [info.skat.dk]

A document rejected for technical reasons can be corrected and retransmitted. A commercial or VAT correction after successful delivery should be made through a formal credit-note or correction process rather than by deleting the original record. [erhvervsstyrelsen.dk], [oioubl-dem…mhandel.dk]

9.2 VAT reporting corrections

Incorrect VAT returns are corrected through TastSelv Erhverv using the functions for amending previous VAT periods. Corrections should be reconciled to the accounting records and supporting invoices. Denmark has not introduced a separate real-time e-reporting correction message because no general invoice-level real-time reporting system exists. [skat.dk], [pilot.skat.dk], [ntse.skat.dk]

10. Transmission and Workflow

10.1 Platform

NemHandel is Denmark’s common electronic business-document infrastructure. It is overseen by the Danish Business Authority and interacts with Peppol-based services. It is not a VAT clearance portal operated to approve invoices before issuance. [erhvervsstyrelsen.dk], [nemhandel.dk]

10.2 Channels

Possible channels include:

• Registered digital bookkeeping systems.
• NemHandel service providers.
• Peppol access points.
• Integrated ERP connections.
• Other provider tools capable of producing and transmitting compliant documents.

The Bookkeeping Act does not require every business to contract with one specific state-selected service provider. [erhvervsstyrelsen.dk], [nemhandel.dk], [globalvatc…liance.com]

10.3 Providers

Providers of standard digital bookkeeping systems must register their systems with the Danish Business Authority. The Authority publishes a registry of systems that have been reviewed against the statutory requirements. Businesses using customised or non-registered systems retain direct responsibility for demonstrating compliance. [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk]

10.4 Deadlines

• There is no T+1 or real-time domestic B2B invoice-reporting deadline.
• VAT returns are filed monthly, quarterly or half-yearly depending principally on taxable turnover and taxpayer status.
• EU Sales Lists are normally monthly, although quarterly reporting may be requested in eligible cases.
• Exact VAT dates should be verified using the SKAT deadline calendar. [skat.dk], [skat.dk]

11. Self-Billing

• Self-billing is permitted under the normal VAT invoicing framework.
• The seller and buyer should maintain an agreement and an appropriate acceptance procedure.
• The self-billed invoice must contain the information required for a normal VAT invoice and identify the nature of the arrangement where required.
• For B2G or voluntarily structured transactions, the self-billing document should use the applicable supported electronic document type.
• OIOUBL documentation includes a self-billing response workflow.
• No separate tax-authority pre-authorisation or domestic B2B platform-clearance requirement has been identified.
• Foreign-buyer arrangements require particular attention to VAT identification, place-of-supply rules and the ability of the chosen format to represent the parties correctly. [oioubl-dem…mhandel.dk], [info.skat.dk], [globalvatc…liance.com]

12. Triangulation and Special Scenarios

12.1 Triangulation

Triangulation continues to be processed under EU VAT rules:

• The intermediary’s supplies and acquisitions must be classified correctly.
• Relevant EU Sales List and VAT-return entries remain required.
• Structured e-invoicing is not itself the mechanism that determines eligibility for triangulation simplification.
• No Denmark-specific mandatory NemHandel triangulation workflow has been published. [skat.dk], [skat.dk], [skat.dk]

12.2 Chain transactions

The business must determine:

• Which supply is the transport-related supply.
• The VAT registrations used by the parties.
• Whether a Danish domestic supply arises.
• Whether zero rating or reverse charge applies.
• Which invoice references and supporting transport evidence are required.

Current Danish e-invoicing rules do not replace this substantive VAT analysis. [skat.dk], [skat.dk]

12.3 Reverse charge

• Purchases of goods and services from other countries may require Danish reverse-charge accounting.
• The Danish buyer reports the acquisition or reverse-charge VAT in the relevant VAT-return fields.
• The supplier invoice should contain the appropriate reverse-charge wording where applicable.
• Relevant values are reported in boxes A, B or C depending on the transaction. [skat.dk], [skat.dk]

12.4 Zero-rated and exempt supplies

Structured invoices use appropriate VAT categories and exemption-reason codes. For example, OIOUBL validation rules link specified exemption reasons to relevant VAT-category codes. Businesses must still retain evidence supporting exemption or zero rating. [oioubl-dem…mhandel.dk], [globalvatc…liance.com]

12.5 Local nuances

VAT groups, fixed establishments, construction reverse charge, call-off stock and fiscal-representation scenarios require separate VAT analysis. No specific central-clearance treatment applies merely because these arrangements exist. Their accounting data may nevertheless be included in SAF-T and must remain traceable to supporting documentation. [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk]

13. Archiving and Retention

13.1 Responsibility

NemHandel transmission does not relieve suppliers and customers of their own record-retention obligations. Each business remains responsible for retaining issued and received invoices and related accounting evidence. [info.skat.dk], [info.skat.dk]

13.2 Format

The records retained must allow the transaction and control trails to be reconstructed. For structured e-invoices, retaining the original structured data is advisable because a PDF rendering alone may not preserve all machine-readable information or validation evidence. [erhvervsstyrelsen.dk], [nemhandel.dk]

13.3 Retention period

The general rule is five years from the end of the financial year to which the records relate. This applies to invoices, credit notes, self-billing documents and associated accounting material. [info.skat.dk], [info.skat.dk], [info.skat.dk]

13.4 Storage outside Denmark

Electronic invoices may be stored abroad if:

• SKAT is informed of the storage location where required.
• SKAT has complete online access without undue delay.
• The invoices can be downloaded and used for audit purposes.
• For certain third countries, suitable mutual-assistance arrangements must exist if direct online access is not available. [info.skat.dk]

13.5 Integrity and readability

Records must be protected against:

• Destruction.
• Disposal.
• Unauthorised alteration.
• Errors and misuse.

They must remain searchable, readable and accessible throughout the retention period. [erhvervsstyrelsen.dk], [info.skat.dk]

13.6 Audit access

Authorities may require accounting material to be provided within a specified period and in a recognised file format. SAF-T is intended to support this standardised exchange. [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk], [info.skat.dk]

14. Penalties and Enforcement

14.1 No separate B2B e-invoicing penalty yet

Because domestic B2B e-invoice exchange is not generally mandatory, Denmark does not currently impose a universal per-invoice penalty merely because a domestic B2B invoice was sent as PDF rather than through NemHandel. B2G non-compliance, VAT invoice defects and failure to comply with digital-bookkeeping requirements remain separately enforceable. [ec.europa.eu], [kpmg.com], [globalvatc…liance.com]

14.2 Digital-bookkeeping enforcement

Non-compliance may lead to:

• Orders to bring bookkeeping into compliance.
• Fines under the Bookkeeping Act.
• Increased scrutiny or qualified audit observations.
• Potentially substantial penalties, with advisor material citing maximum fines of up to DKK 1.5 million for serious cases.
• More serious consequences where defective records conceal tax fraud or prevent effective control. [kpmg.com], [pwc.dk], [pikon.com]

The precise fine is not automatically DKK 1.5 million. It depends on the nature, duration, seriousness and financial significance of the violation. [retsinformation.dk], [pikon.com]

14.3 VAT-return enforcement

Late VAT filing may result in:

• A provisional assessment.
• A fee, currently described by SKAT as DKK 1,400 per tax or duty.
• Interest and collection consequences.
• Additional sanctions where incorrect reporting is intentional or fraudulent. [ntse.skat.dk], [taxenlight.com]

14.4 Archiving violations

Failure to retain invoices or to provide accessible accounting evidence can:

• Constitute a Bookkeeping Act violation.
• Impair the taxpayer’s ability to substantiate VAT deductions.
• Lead to estimated assessments where reliable records are unavailable.
• Create additional penalties in cases of deliberate or grossly negligent non-compliance. [info.skat.dk], [info.skat.dk]

15. Pre-Filled VAT Returns

15.1 Current position

No authoritative source reviewed for this analysis confirms that Denmark currently provides a fully pre-filled periodic VAT return based on invoice-level NemHandel data.

Businesses calculate output VAT and input VAT from their bookkeeping and submit the figures through TastSelv Erhverv or, where supported, directly from approved bookkeeping software. The taxpayer remains responsible for accuracy. [skat.dk], [ntse.skat.dk]

15.2 Planned evolution

Denmark is developing infrastructure capable of supporting greater automation:

• Standard chart-of-accounts mappings.
• Standard VAT-code mappings.
• Transaction-level SAF-T.
• Direct reporting from bookkeeping systems.
• Automated business reporting initiatives.

These developments could support future pre-population, but no definitive nationwide go-live date or complete list of pre-filled VAT-return fields has been officially announced in the sources reviewed. [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk]

15.3 Dependence on e-invoice data

Current VAT returns are not automatically populated from all NemHandel invoices. This is consistent with the fact that domestic B2B e-invoicing is voluntary and NemHandel does not contain every taxable sales and purchase transaction. [ec.europa.eu], [kpmg.com]

16. Readiness for VAT in the Digital Age

16.1 Alignment

Denmark is well positioned technologically because it already has:

• Structured B2G invoicing.
• National and Peppol routing infrastructure.
• EN 16931 experience.
• Mandatory digital bookkeeping.
• SAF-T-based accounting-data exchange.
• A plan to converge on a Peppol-based invoice specification before July 2030. [ec.europa.eu], [nemhandel.dk], [nemhandel.dk], [erhvervsstyrelsen.dk]

16.2 Remaining gaps

Denmark will still need to address:

• Mandatory structured invoicing for relevant intra-EU B2B transactions.
• ViDA-compliant invoice issuance deadlines.
• Digital reporting of prescribed intra-EU transaction data.
• Transmission of data into the future EU VAT Information Exchange System.
• Consistent treatment of corrections, self-billing, triangulation and cross-border reverse charge.
• Alignment between national Peppol extensions and the harmonised EU semantic model. [nemhandel.dk], [nemhandel.dk]

16.3 Cross-border reporting

From 1 July 2030, ViDA will replace the existing recapitulative-statement model for relevant transactions with digital transaction-based reporting. Denmark’s planned 2029 format consolidation is expressly intended to be completed ahead of this date. Details of the Danish reporting gateway and domestic implementation have not yet been finalised publicly. [kpmg.com], [nemhandel.dk]

16.4 Business implications

Businesses should avoid implementing Denmark as an isolated local solution. A future-proof design should support:

• EN 16931 semantic data.
• Current Peppol BIS Billing.
• Future Peppol BIS 4/PINT developments.
• OIOUBL during the transition.
• Recipient-directory lookup.
• Structured credit notes and self-billing.
• VAT code and chart-of-accounts mapping.
• SAF-T extraction and reconciliation.
• Transaction-level linkage between invoices, accounting entries and VAT returns. [nemhandel.dk], [oioubl-dem…mhandel.dk], [erhvervsstyrelsen.dk]

17. Impact on SMEs and Startups

17.1 Phased onboarding

Smaller businesses not required to file annual reports entered mandatory digital bookkeeping later than larger annual-reporting entities. The relevant threshold is generally DKK 300,000 annual net turnover in two consecutive years for this category. [kpmg.com], [erhvervsstyrelsen.dk]

17.2 Support tools

Available support includes:

• The Danish Business Authority’s registry of compliant standard bookkeeping systems.
• Official bookkeeping guidance.
• Technical SAF-T documentation and examples.
• NemHandel documentation.
• SKAT bookkeeping guidance.
• VAT filing through TastSelv Erhverv and, for compatible systems, direct transfer from bookkeeping software. [erhvervsstyrelsen.dk], [skat.dk], [erhvervsstyrelsen.dk], [skat.dk]

17.3 Simplifications and thresholds

The DKK 300,000 threshold delays mandatory digital bookkeeping for smaller class-A businesses. It is not an exemption from ordinary VAT invoicing, return filing or record retention where those obligations otherwise apply. [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk]

17.4 Subsidies

No dedicated nationwide subsidy specifically covering e-invoicing or Peppol implementation costs was identified in the current official materials reviewed. General SME digitalisation or regional programmes may be available, but they should not be presented as e-invoicing-specific support without checking their individual eligibility criteria.

17.5 Compliance costs

Likely one-time costs include:

• Selection or upgrade of bookkeeping software.
• ERP integration.
• OIOUBL and Peppol mapping.
• Master-data cleansing.
• NemHandel registration.
• SAF-T and chart-of-accounts mapping.
• User training and process redesign.

Ongoing costs may include access-point fees, software subscriptions, support, monitoring and format maintenance. Consultation responses specifically raised concerns about complexity, national extensions and implementation costs. [globalindi…gement.com], [nemhandel.dk]

17.6 Benefits

Potential benefits include:

• Less manual invoice entry.
• Faster routing.
• Fewer transcription errors.
• Automated matching.
• Stronger transaction trails.
• Easier VAT reconciliation.
• Earlier identification of incorrect tax codes.
• Improved readiness for ViDA and cross-border Peppol exchange. [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk]

17.7 Overall SME assessment

For small businesses, the initial burden is principally a software and process transition. The longer-term benefit depends on whether structured invoices are actually used. A business that adopts compliant software but continues to send and receive PDFs will realise fewer automation benefits than one that actively exchanges structured documents. The March 2027 default-enrolment programme is designed to overcome this adoption gap without immediately imposing a universal legal B2B mandate. [kpmg.com], [erhvervsstyrelsen.dk]

18. Official References and Sources

18.1 Government and EU sources

• Danish Bookkeeping Act, Act No. 700 of 24 May 2022
• Danish Business Authority guidance on the Bookkeeping Act
• Requirements for non-registered digital bookkeeping systems
• Registry of approved digital bookkeeping systems
• Digital administration and reporting portal
• European Commission e-invoicing country profile for Denmark
• SKAT VAT portal
• SKAT VAT filing deadlines

18.2 Technical specifications

• NemHandel strategy for migration from OIOUBL to Peppol BIS
• Consultation outcome on the common Peppol-based invoice
• OIOUBL technical documentation
• Danish Business Authority SAF-T and standard chart of accounts
• SAF-T version 2 announcement
• SAF-T version 1 technical description

18.3 Archiving and VAT guidance

• SKAT guidance on invoice retention and offshore storage
• SKAT guidance on retention of accounting material
• SKAT bookkeeping and invoice-content guidance
• SKAT guidance on VAT accounting
• SKAT guidance on intra-EU purchases and reverse charge

18.4 Recent advisor and specialist analysis

• KPMG: deferred voluntary e-invoicing launch to 1 March 2027
• KPMG: digital-bookkeeping requirements in Denmark
• PwC: the Danish Bookkeeping Act
• VATupdate: Denmark proposes new e-invoicing adoption rules
• VATupdate: transition to a Peppol-based NemHandel e-invoice
• Specialist analysis of the 2029 Peppol migration
• VATupdate: Denmark’s 2026 VAT guide overview

19. Summary and Key Takeaways

19.1 Scope

• B2G structured e-invoicing is mandatory.
• Domestic B2B e-invoicing remains voluntary.
• Domestic B2C transactions are not subject to a structured e-invoicing mandate.
• Cross-border invoices are not currently cleared or reported through NemHandel.
• Digital bookkeeping applies broadly, but according to entity, turnover and system-specific implementation dates. [ec.europa.eu], [kpmg.com], [erhvervsstyrelsen.dk]

19.2 Format

• Current structured formats are OIOUBL and Peppol BIS Billing.
• Denmark intends to migrate to one Peppol-based NemHandel specification.
• Full migration is targeted for approximately mid-2029.
• PDF remains permissible for many non-B2G transactions but is not a structured e-invoice. [skat.dk], [globalindi…gement.com], [nemhandel.dk]

19.3 Timeline

• Bookkeeping Act adopted: 24 May 2022.
• Digital-bookkeeping requirements phased in: 2024–2026.
• SAF-T 2.x support for registered systems: 1 January 2027.
• Voluntary e-invoicing campaign and automatic NemHandel enrolment: 1 March 2027.
• Peppol-based migration: approximately mid-2028 to mid-2029.
• ViDA cross-border digital reporting: 1 July 2030. [kpmg.com], [retsinformation.dk], [nemhandel.dk], [erhvervsstyrelsen.dk]

19.4 Operating model

• Decentralised network exchange.
• No invoice clearance by SKAT.
• NemHandel and Peppol-based routing.
• Periodic VAT returns and EU Sales Lists remain in place.
• SAF-T supports data exchange and audit access rather than current continuous reporting. [ec.europa.eu], [erhvervsstyrelsen.dk], [skat.dk]

19.5 Key obligations

Businesses should ensure that:

• The applicable bookkeeping system is compliant.
• Structured invoices can be issued, received and stored.
• Invoice and accounting records are linked through a reliable audit trail.
• VAT codes and chart-of-accounts mappings support SAF-T.
• Credit notes and corrections preserve the original record.
• Records remain accessible for at least five years. [erhvervsstyrelsen.dk], [erhvervsstyrelsen.dk], [info.skat.dk]

19.6 Main risks

The principal risks are:

• Mistaking digital-bookkeeping capability for a universal B2B e-invoicing mandate.
• Missing the 1 March 2027 provider and NemHandel-enrolment changes.
• Building only for OIOUBL and not preparing for Peppol migration.
• Treating SAF-T as merely a header export despite the 2027 registered-system requirements.
• Failing to retain the original structured invoice and associated audit trail.
• Weak reconciliation between invoice data, ledger entries and VAT returns.
• Assuming that solely VAT-registered foreign entities have the same digital-bookkeeping start date as Danish-established businesses. [kpmg.com], [kpmg.com], [nemhandel.dk], [erhvervsstyrelsen.dk]

19.7 Recommended next steps

• Confirm whether each Danish entity is subject to the Bookkeeping Act and mandatory digital bookkeeping.
• Distinguish Danish establishments and fixed establishments from foreign entities that are only VAT registered.
• Verify whether each accounting system is registered or customised.
• Test current OIOUBL and Peppol BIS Billing capability.
• Prepare for NemHandel auto-enrolment and opt-out governance from 1 March 2027.
• Implement SAF-T 2.x mapping for registered systems before 1 January 2027.
• Monitor the NemHandel BIS 4 specification, release candidate and migration plan.
• Preserve source invoice, network status, accounting document and VAT-return references as one audit chain.
• Design the solution to support ViDA cross-border e-invoicing and digital reporting from 1 July 2030. [erhvervsstyrelsen.dk], [kpmg.com], [nemhandel.dk], [erhvervsstyrelsen.dk]