New JPK_VAT Structures Published: Effective February 2026, Integrated with National e-Invoicing System

New versions of JPK_V7M(3) and JPK_V7K(3) structures were published on December 19, 2025, on the ePUAP platform, effective from February 1, 2026.
The updated templates reflect changes from the Ministry of Finance and Economy regulation of December 12, 2025, including integration with the National e-Invoice System (KSeF).
The new structures allow for reporting KSeF numbers and handling the deposit system in JPK_VAT with the declaration.
Detailed modifications are available in the attachments.

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.