Official invoice verification navigator

Identify the correct authority, reference type and official verification route for a country without pretending to perform an authority lookup.

PL EN

Official invoice verification navigator

Identify the correct authority, reference type and official verification route for a country without pretending to perform an authority lookup.

Processed in your browserNo file storage

Select country

Official authorityKrajowa Administracja Skarbowa

Results

Primary formatKSeF FA(3)

Identifier checkerKSeF number or UPO context

Delivery modelAuthenticated KSeF 2.0 API or taxpayer application, with KSeF number, session/status handling, official receipt and offline-mode workflows.

Last reviewed2026-08-02

EInvoiceLab does not imitate a live authority response. Continue to the official source to confirm acceptance, cancellation, receipt or current status.

Open official verification source ↗

Methodology

Official invoice verification navigator · Poland

Route the user to the correct official authority or network source for invoice acceptance, cancellation, receipt or participant verification. This avoids fake live-status claims and preserves the official source as the authority.

What the tool checks

Responsible authority
Expected reference type
Delivery or clearance model
Official verification destination

What it cannot confirm

Technical check only

EInvoiceLab does not proxy protected authority responses
Login, consent or issuer data may be required on the official service

Requirements Official sources