Poland's Finance Ministry released KSeF version 5.5.1.v1, refining its API, removing error codes, and adding new authorisation options. The Polish Ministry of Finance has released version 5.5.1.v1 of the KSeF e-invoicing technical specification, refining the API interface ahead of the mandatory rollout. The changes refer to: Error code removal: Error code 99 for HTTP 400 (Bad Request) response... Read more

Starting January 1, 2027, invoices will be issued exclusively via KSeF, with consultations held for proposed changes and token management. Starting January 1, 2027, invoices will no longer be issued through cash registers. Instead, they must be issued exclusively via the KSeF system- e-invoicing system. To prepare for this change, the Ministry of Finance and Economy of Poland has published a draf... Read more

Fiscalization has transformed from a compliance tool reliant on hardware to dynamic, software-driven platforms linking businesses and tax authorities. The webinar was presented by Dušan Bučevac, Sales Manager at Fiscal Solutions, who covered crucial fiscalization milestones and explained how real-time data has reshaped compliance, transparency, and business decision-making. Read more

Under KSeF, a structured invoice legally exists only once it receives a KSeF number; until then, the buyer may receive only a transaction confirmation, which is not an invoice and does not allow VAT deduction. Read more

A new Polish bill would allow municipalities to introduce a daily tourist compensation fee for overnight stays, with limited exemptions. A new bill amending the Act on Local Taxes and Fees has been submitted to the Polish Sejm, allowing Municipal Councils to introduce a so-called "tourist compensation fee" collected at hotels. According to the bill's proponents, this is not a new tax but a fee. If... Read more

Poland is consulting on VAT refund rule changes for foreign taxpayers to align refund claims with KSeF e-invoicing requirements from 2026. The draft relaxes invoice attachment obligations but requires KSeF invoice identification numbers where available, with different evidence rules for EU and non-EU claimants. Poland has launched a public consultation (opened April 15, 2026, by the Ministry of Fi... Read more