Poland
KSeF
Krajowy System e-Faktur
Poland's National e-Invoice System. Structured XML with mandatory split-payment tags and GTU codes.
Overview
KSeF (Krajowy System e-Faktur) is Poland's National e-Invoice System, managed by the Ministry of Finance. Mandatory for all B2B transactions from February 2026 (with a staged rollout), KSeF requires every invoice to be issued as a structured XML through a central government platform. The XML schema includes Polish-specific fields like GTU codes for sensitive goods, split payment mechanism indicators (MPP), and SW tax breakdown codes.
Technical Specification
| Standard Body | Ministerstwo Finansów (Ministry of Finance) — Poland |
| Namespace URI | https://crd.gov.pl/wzor/2023/06/14/13089/ |
| Root Element | Faktura |
| Version | FA(2) (valid from Sep 2023) |
| Mandatory Since | Staged: large firms Feb 2026, all B2B Apr 2026 |
| Signature | KSeF platform-generated QR code + assignment number (KSeF ID) |
Fields Extracted by InvoSnap
Frequently Asked Questions
What are GTU codes in KSeF?
GTU (Grupy Towarowo-Usługowe) are 13 category codes for goods/services subject to special VAT monitoring (e.g. steel, fuel, electronics). InvoSnap extracts GTU codes from line items.
How does split payment (MPP) work in KSeF?
MPP (Mechanizm Podzielonej Płatności) requires large B2B payments to be split — net to supplier's regular account, VAT to a dedicated VAT account. The KSeF XML includes an MPP indicator InvoSnap extracts.
Does the KSeF platform generate the invoice, or do I?
You create the KSeF FA(2) XML using your ERP or invoicing software, then submit it to the KSeF platform. The platform validates it, assigns a KSeF number, timestamps it, and makes it available to the buyer. InvoSnap reads the KSeF XML after assignment.
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