Poland's KSeF Mandate — Get Ready for Structured E-Invoicing
Poland's KSeF B2B e-invoicing is rolling out in phases through 2026 and 2027. Kworia keeps your invoicing structured and compliant, with NIP checks and PEPPOL for cross-border. Free to start, no credit card.
Why Polish Businesses Choose Kworia
KSeF-Ready Invoicing
Structured, compliant invoices ready for Poland's KSeF mandate, which phases in for large taxpayers from February 1, 2026 and other businesses from April 1, 2026.
NIP Checks
NIP format + VIES pre-checks for Polish VAT numbers. Users remain responsible for confirming official tax-authority records.
PEPPOL Cross-Border
Send compliant e-invoices across Europe via PEPPOL. One platform for domestic structured invoicing and cross-border trade.
Polish E-Invoicing Compliance
Poland's KSeF (Krajowy System e-Faktur) B2B mandate is rolling out in phases: large taxpayers from February 1, 2026, other businesses from April 1, 2026, and the smallest micro-entrepreneurs from January 1, 2027 (timeline subject to change). Kworia keeps you ready:
- Structured invoices aligned with the KSeF FA(2) format
- NIP format + VIES pre-checks (user confirms official records)
- PEPPOL Access Point for cross-border e-invoicing
- EN 16931 / UBL 2.1 compliant invoice generation
Simple Pricing
Transparent pricing in EUR.
Unlimited features are subject to fair-use and technical rate limits. Archive-Vault — 10-year locked retention, nightly integrity verification and audit-ready exports — is included on Scale; on every other plan, statutory archival remains your responsibility. You can export your data at any time while your account is open, on every plan — we commit to no retrieval period once it is closed.
Free
Free forever for basic invoicing
- Unlimited Invoices
- Unlimited Quotes
- PEPPOL Network Access
- Email Support
- Role & Permissions
- Multi-Currency
- Receive E-Invoices
- Recurring Invoices
- Priority Support
- Archive Vault
- Full Accountant Panel
Starter
Perfect for freelancers
- Unlimited Invoices
- Unlimited Quotes
- PEPPOL Network Access
- Email Support
- Role & Permissions
- Multi-Currency
- Receive E-Invoices
- Recurring Invoices
- Priority Support
- Archive Vault
- Full Accountant Panel
Professional
For growing businesses
- Unlimited Invoices
- Unlimited Quotes
- PEPPOL Network Access
- Email Support
- Role & Permissions
- Multi-Currency
- Receive E-Invoices
- Recurring Invoices
- Priority Support
- Archive Vault
- Full Accountant Panel
Scale
For large organizations
- Unlimited Invoices
- Unlimited Quotes
- PEPPOL Network Access
- Email Support
- Role & Permissions
- Multi-Currency
- Receive E-Invoices
- Recurring Invoices
- Priority Support
- Archive Vault
- Full Accountant Panel
Accounting Free
Basic accounting panel
- Unlimited Invoices
- Unlimited Quotes
- PEPPOL Network Access
- Email Support
- Role & Permissions
- Multi-Currency
- Receive E-Invoices
- Recurring Invoices
- Priority Support
- Archive Vault
- Full Accountant Panel
Frequently Asked Questions
Is Kworia ready for Poland's KSeF e-invoicing mandate?
We keep your invoices structured and compliant, ready for the KSeF mandate. The rollout is phased — large taxpayers from February 1, 2026 and other businesses from April 1, 2026 (timeline subject to change). Please confirm the latest KSeF requirements and your own filing obligations.
What is KSeF and the FA(2) format?
KSeF (Krajowy System e-Faktur) is Poland's national e-invoicing system. Invoices are submitted as a structured XML document (the FA(2) schema) and validated by KSeF, which assigns a unique KSeF ID. This national system is separate from PEPPOL, which we use for cross-border invoicing.
How does NIP validation work?
We run NIP format checks and EU VIES pre-checks on Polish VAT numbers, flagging issues before you send. Please confirm official tax-authority records for accuracy.
Can I invoice clients in other EU countries?
Yes! Through PEPPOL, you can send e-invoices to 28+ European countries, including all EU members. Cross-border format conversion is handled automatically.
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Get Ready for Poland's KSeF Mandate
Start free today. Create your first structured, compliant invoice in under a minute.