Documents that are not sent to KSeF include pro forma invoices, internal invoices and vouchers, debit notes (noty obciążeniowe) and credit notes (noty uznaniowe). Since 1 February 2026, corrective notes (noty korygujące) are also no longer issued. Whether a document must be sent to KSeF depends on its legal nature, not on the name used for it in the accounting system.


