API Change Log

Changes - Extensions on API-level

Below summary of the main API evolutions since mid September 2025.

API-FeatureDate in DocumentationMore Info
Self-Billing (CreditNote)06/02/2026https://docs.billit.be/docs/what-is-self-billing
Poland KSeF FA3 support in production01/02/2026https://docs.billit.be/docs/ksef-general-info
Variable bank account per invoice (incl. factoring)26/11/2025https://docs.billit.be/docs/ibanbic
Allowances and Charges extended support31/10/2025https://docs.billit.be/docs/allowances-and-charges-advanced
Self-Billing (Invoice)02/10/2025https://docs.billit.be/docs/self-billing
Support of additional properties for outgoing sales invoices25/09/2025https://docs.billit.be/docs/how-can-i-add-certain-peppol-values-that-billit-json-does-not-support