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KSeF Poland

Issue invoices and credit notes through KSeF.
DeveloperInvopop
CategoryGovernment
CountryPoland
DocsImplementation guide
KSeF (Krajowy System e-Faktur) is Poland’s official national platform for electronic invoicing, established and operated by the Ministry of Finance. KSeF with the FA_VAT format aims to increase transparency, streamline VAT compliance, and reduce tax fraud in business-to-business (B2B) invoicing.Electronic invoicing in Poland operates on a real-time validation model whereby every invoice must be validated against the FA_VAT schema and business rules. Validated invoices receive a unique KSeF ID and official ‘receipt’ timestamp. The platform provides secure archiving for issued and received e-invoices.Invoices are encoded in FA_VAT, a strict XML format published and maintained by Polish tax authorities. The schema enforces standardized fields for both domestic and cross-border transactions, including buyer/seller data, VAT details, and item lines.

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Key Features

  • Workflow Automation: This app provides automated workflows for issuing invoices and credit notes through the KSeF system.
  • Real-Time Validation: Every invoice is validated in real-time against the FA_VAT schema and business rules, ensuring compliance with Polish e-invoicing regulations.
  • Legally Compliant PDF Invoices: Invoices are generated with all mandatory fields and FA_VAT QR codes linked to the KSeF portal.
  • FA_VAT XML Generation: Compliant XML generation is supported for the KSeF FA_VAT schema.
  • QR Code: Generates the FA_VAT QR code according to KSeF specifications.
  • KSeF Integration: Direct integration with KSeF, Poland’s official national platform for electronic invoicing.
Make sure to check out our KSeF Poland Guide for instructions on how to issue invoices and set up your workflows.

Poland FAQ

Frequently asked questions about invoicing compliance in Poland →

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