KSeF for freelancers and sole traders in Poland
One-person business (JDG) in Poland? KSeF applies to you too. Here's the plain-language version of what you must do, when, and the lightest way to stay compliant.
KSeF for freelancers and sole traders in Poland
Running a jednoosobowa działalność gospodarcza (JDG — sole proprietorship) in Poland? KSeF isn't only for big companies. Structured invoicing through the national system reaches freelancers too, on the phased timeline. Here's the plain version.
Yes, it applies to you
If you issue VAT invoices for domestic B2B in Poland, you're heading into KSeF like everyone else — the phase depends on business size, with smaller businesses in a later wave. Confirm your exact date with a Polish accountant, but plan to be ready rather than surprised.
What changes for a solo
- Your invoice becomes a structured FA_VAT file submitted to KSeF — not a PDF
you email.
- The invoice is issued when KSeF accepts it and returns a KSeF number;
keep the UPO (receipt).
- Your business clients retrieve invoices from KSeF using your NIP.
- Corrections go through a correcting invoice in KSeF, not by editing.
Are you exempt from VAT (zwolnienie)?
Even VAT-exempt sole traders should check their position — the structured-invoice obligation is about the system, not only about charging VAT. Ask your accountant whether and when it reaches your situation.
The lightest compliant setup
□ A way to authenticate to KSeF (token / trusted profile / signature)
□ Software that builds valid FA_VAT and submits it
□ Storage of the KSeF number + UPO for every invoice
□ A routine to receive/reconcile invoices addressed to your NIPYou do not need enterprise software — you need a KSeF-connected tool sized for one person, plus, if you invoice abroad, an EU e-invoicing channel.
If you also work with clients abroad
Cross-border clients aren't domestic KSeF — those invoices use EU rules and Peppol/EN 16931, with the right VAT treatment (reverse charge for EU B2B, OSS for cross-border B2C). Many Polish freelancers serving foreign clients need both channels.
Where Eurobillr fits
Eurobillr is a great fit for the cross-border side of a Polish freelancer's work — Peppol/EU e-invoicing, VIES validation, reverse charge, multi-currency, reminders — on a plan sized for a solo. Domestic KSeF issuance is Poland's national system; for that you'd use KSeF directly or a KSeF-connected tool. If you invoice EU clients from Poland, Eurobillr keeps that side compliant and simple.
See Peppol explained for freelancers and how to create an invoice.