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Ministry of Finance: Penalties for Errors in KSeF Do Not Have to Be Maximum

3 weeks ago
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5 min read

Summary

 

  • No penalties in 2026: Although KSeF becomes mandatory in 2026, the Ministry of Finance confirmed that no financial sanctions will be imposed before 1 January 2027; 2026 is treated as a transition and adaptation period. [txb.pl], [vatcalc.com]
  • Sanctions from 2027 are not automatic: From 2027, penalties for not using KSeF or for errors will be assessed case by case, taking into account the nature, scale and frequency of the breach, as well as corrective actions taken by the taxpayer. [txb.pl]
  • Maximum fines are a ceiling, not the default: While the law allows for high maximum penalties (e.g. up to 100% of VAT), the Ministry has made clear that maximum sanctions do not have to be applied and may be reduced or waived in justified circumstances. [txb.pl], [sovos.com]

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Article

The Polish Ministry of Finance has confirmed a measured and proportional approach to sanctions related to the National e‑Invoicing System (KSeF). Although the obligation to issue invoices via KSeF becomes mandatory in 2026, financial penalties will not be imposed until 2027, and even then they will not be automatic nor necessarily set at the maximum level. The tax authorities are expected to assess each case individually, taking into account the specific circumstances of the taxpayer.

No Sanctions During the 2026 Transition Period

According to guidance published by the Ministry of Finance and echoed by tax advisory firms, 2026 will function as a transition and adaptation year for taxpayers required to use KSeF. During this period, no financial penalties will be imposed for failing to issue invoices through the system, even if the obligation formally applies to a given taxpayer. [txb.pl], [vatcalc.com]

Mandatory use of KSeF will be introduced in stages:

  • 1 February 2026 – for large taxpayers with turnover exceeding PLN 200 million in 2024
  • 1 April 2026 – for other VAT‑registered taxpayers
  • 1 January 2027 – for the smallest micro‑entities [dudkowiak.com], [pincvision.com]

Despite this phased rollout, the Ministry has clearly stated that penalties for non‑compliance will only apply from 1 January 2027, regardless of when the obligation to issue invoices via KSeF first arises. [txb.pl], [sovos.com]

Sanctions Will Not Be Automatic

From 2027 onwards, sanctions may be imposed on taxpayers who:

  • fail to issue structured invoices via KSeF despite being obliged to do so,
  • issue invoices outside KSeF without a valid technical justification (e.g. improper use of offline mode),
  • fail to submit offline invoices to KSeF within the statutory deadline. [txb.pl]

However, the Ministry of Finance has emphasised that penalties will not be applied automatically. Tax authorities will be required to evaluate the circumstances of each individual case, including:

  • the nature and scale of the breach,
  • whether the infringement was incidental or systematic,
  • whether the taxpayer took corrective actions,
  • the taxpayer’s financial and organisational situation. [txb.pl], [mddp-outsourcing.pl]

In practice, this means that even where a breach is identified, the maximum penalty does not have to be applied, and in exceptional cases the sanction may be reduced or even waived entirely.

Maximum Penalties Remain High – but Are a Last Resort

Under the VAT Act, the statutory upper limits of KSeF penalties are significant:

  • up to 100% of the VAT amount shown on an invoice issued outside KSeF,
  • where VAT is not shown, up to 18.7% of the gross invoice value. [txb.pl]

Nevertheless, experts stress that these amounts represent maximum ceilings, not default sanctions. The Ministry has explicitly distanced itself from a punitive, zero‑tolerance approach, positioning penalties as a last resort, primarily aimed at cases of persistent or deliberate non‑compliance rather than technical mistakes or early‑stage implementation issues. [sovos.com], [rtcsuite.com]

Importantly, breaches of KSeF obligations will result in financial penalties only. The legislation does not introduce criminal or fiscal‑penal liability solely for failures related to KSeF invoicing. [txb.pl]

Practical Implications for Businesses

While the absence of penalties in 2026 may appear reassuring, the Ministry of Finance and advisers caution against delaying implementation. Even during the grace period:

  • invoices issued outside KSeF will not benefit from the system’s evidentiary protection,
  • customers may face a higher burden of proof when claiming VAT deductions,
  • KSeF numbers and receipt dates will still be required for JPK_VAT reporting once applicable. [vatcalc.com], [mddp-outsourcing.pl]

As a result, businesses are strongly encouraged to treat 2026 as a live operational year, using it to stabilise systems, train staff and refine processes before the sanction regime becomes effective.

A Proportional Enforcement Philosophy

The Ministry of Finance’s position reflects a broader policy objective: ensuring high adoption and data quality in KSeF without undermining legal certainty or business continuity. By postponing sanctions until 2027 and rejecting automatic maximum fines, the authorities aim to balance enforcement with proportionality and taxpayer trust.

For companies operating in Poland, the message is clear: penalties are coming, but they will be applied with judgment rather than rigidity. Early preparation remains the best safeguard—not only against future fines, but also against operational and VAT‑deduction risks as KSeF becomes the backbone of Poland’s invoicing system.

Briefing document & Podcast: Poland E-Invoicing, E-Reporting and KSeF Mandate – VATupdate

  • Join the Linkedin Group on Global E-Invoicing/E-Reporting/SAF-T Developments, click HERE
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