Blog
Wöchentliche Produktnotizen und Compliance-Updates vom Eurobillr-Team. Peppol, SDI, XRechnung, Chorus Pro, Freelancer-Steuern — geschrieben für Macher.
Choosing KSeF software means checking authentication, FA_VAT support, the UPO, receiving, and how it handles corrections and schema updates. Here's the buyer's checklist.
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.
Whether a non-Polish business must use KSeF hinges on one thing: a fixed establishment in Poland. Here's how to tell if you're obliged, and what to do if you're not.
Issuing an invoice through KSeF is different from emailing a PDF — the invoice is 'issued' the moment KSeF accepts it. Here's the exact sequence and what to keep.
A practical map of the KSeF API — environments, authentication, sessions, sending FA_VAT, fetching the UPO and invoice status — so you know the moving parts before writing code.
Integrating with KSeF means authentication, sessions, sending FA_VAT and retrieving the UPO. Here's the shape of a KSeF integration and the decisions to make before you build.
KSeF is the platform every business invoicing in Poland will issue through. Here's what it is, how it works, the FA_VAT format, the KSeF number and UPO, and the mandatory timeline.