Poland E-Invoicing
Polska · KSeF (FA_VAT)
Poland launched the mandatory KSeF (Krajowy System e-Faktur) in February 2026 for large taxpayers, extending to all VAT-registered businesses in April 2026. All B2B and B2G invoices must pass through the government KSeF platform and receive a unique KSeF reference number.
Legal basis: Ustawa o KSeF (Act on KSeF), Dz.U. 2021 poz. 1598 · Ministerstwo Finansów ↗
B2B e-invoicing has been mandatory in Poland since February 2026.
All businesses must be able to receive structured e-invoices. Check the regulations for your sending obligations.
Explore Poland E-Invoicing
Poland E-Invoicing Timeline
KSeF launched as voluntary system
The Polish government launched the Krajowy System e-Faktur (KSeF) on a voluntary basis, allowing businesses to issue FA_VAT structured invoices and receive a KSeF reference number. Voluntary adoption begins.
B2G e-invoicing mandatory (public procurement)
Electronic invoicing becomes mandatory for invoices submitted under public procurement contracts above EU thresholds. Suppliers must send structured e-invoices via the PEF (Platforma Elektronicznego Fakturowania) system.
Mandatory KSeF postponed — cybersecurity audit failure
The Ministry of Finance announced a postponement of the originally planned July 2024 mandatory KSeF date following a critical cybersecurity audit that found vulnerabilities in the KSeF platform. A new timeline was to be announced after remediation.
KSeF Act amended — new mandatory dates confirmed
The Polish parliament enacted amendments to the KSeF Act setting new mandatory dates: 1 February 2026 for large taxpayers (annual turnover >PLN 200 million) and 1 April 2026 for all remaining VAT-registered businesses.
KSeF mandatory — large taxpayers (>PLN 200M turnover)
Mandatory KSeF kicks in for large taxpayers with annual turnover exceeding PLN 200 million. All B2B and B2G VAT invoices must be issued through KSeF and carry a unique KSeF reference number. Non-compliant invoices risk VAT deduction rejection.
KSeF mandatory — all VAT-registered businesses
Full mandate: every business registered for VAT in Poland must issue all domestic B2B invoices through KSeF. Paper and PDF invoices no longer have legal standing for VAT purposes. KSeF reference number is required on every invoice.
Top E-Invoicing Software for Poland
View all →| Provider | Rating | Pricing | ksef_fa_vat | Peppol BIS | Free Trial | Best For | |
|---|---|---|---|---|---|---|---|
w wFirma✓ Verified | ★★★★½4.5 | €59/mo | ✓ | ◯ | ✓ | freelancersmb | Try Free → |
i iFirma✓ Verified | ★★★★½4.5 | €40/mo | ✓ | ◯ | ✓ | freelancersmb | Try Free → |
C Comarch ERP Optima✓ Verified | ★★★★☆4.4 | €149/mo | ✓ | ✓ | ✓ | smbmidmarket | Request Demo → |
I InsERT nexo✓ Verified | ★★★★☆4.4 | €89/mo | ✓ | ◯ | ✓ | freelancersmb | Try Free → |
| ★★★★☆4.3 | €199/mo | ✓ | ✓ | ✓ | smbmidmarketenterprise | Get Demo → |
Comparison data last verified: June 2026. Some links are affiliate links — see our editorial policy.
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