- The tax authority confirmed that the invoice issue date is the date in field P_1 of the structured invoice, not the date the invoice is created in KSeF.
- This date (P_1) is also the date when the tax obligation arises, if the invoice date matches the delivery date.
- For invoices in foreign currency, the tax base can be converted using the NBP exchange rate from the last working day before the invoice issue date (P_1).
- The company’s approach—issuing invoices with the tax obligation date and sending them to KSeF after receiving delivery confirmation—was fully accepted by the tax authority.
- The company is preparing to use KSeF mandatorily from February 1, 2026, integrating its internal accounting system with KSeF via dedicated software.
Source: ksiegowosc.infor.pl
Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.
Latest Posts in "Poland"
- Why KSeF Should Not Affect Self‑Invoicing Policies
- Temporary VAT and Excise Duty Reduction, Fuel Price Cap Effective March-April 2026
- Poland’s National e-Invoicing System Ready for April 1, 2026 Launch, New Features Announced
- Tax Office Challenges VAT Exemption for Online Sellers, Demands Back Taxes for Single Disqualified Sale
- Poland Plans Fuel Tax Cuts and Price Caps to Tackle Soaring Fuel Costs














