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What's new

Changes to KSeF Kit you can see when issuing and filing invoices. Newest first.

July 2026

  • Stripe coupons are allocated per invoice line. A discount spread across several lines used to reach KSeF with the wrong amounts — it now matches the invoice in Stripe.
  • Invoices with 11 or more lines file in full, and shipping cost becomes its own FA(3) position (“Koszt dostawy”).
  • Every held, blocked or queued invoice now has a way back — resubmit in one click, with a link to whatever needs fixing. Corrections (KOR) included. Blocks lift automatically once you complete your company profile or connect KSeF.
  • Nothing is lost silently. Interrupted and blocked filing attempts are recorded and visible in the invoice's filing history instead of vanishing.
  • Stripe sandbox installs file invoices. Previously those invoices sat at “W kolejce” forever.
  • Free plan: 6 accepted filings a month instead of 10. Accounts created before 30 July 2026 keep the old limit of 10 until 1 September 2026. Over the limit, invoices are held rather than rejected — they file automatically once you upgrade.
  • The KSeF number is written to Stripe invoice metadata rather than the invoice footer — Stripe rejects footer edits on a finalized invoice, which was costing us the metadata too. Failed write-backs are now visible in the filing history.

June 2026

  • Full KSeF support inside Stripe: filing status and error code on the invoice, KOR corrections, one-click UPO download, a dashboard widget, and a list of invoices needing action.
  • Connect KSeF without leaving Stripe — the token goes into Stripe's Secret Store, not our database.
  • Invoices carry FA(3) line items (FaWiersz) and the buyer's address. A structured invoice is not valid without them.
  • Connect Stripe with a restricted key when you can't install the Marketplace app. A company profile page with your NIP was added.
  • You can start straight on production KSeF — a test filing is no longer required.
  • 15 June 2026 — KSeF Kit goes live: automatic filing of Stripe invoices to KSeF as FA(3), KOR corrections, UPO as proof of filing, NBP-rate currency conversion, an accountant export, and a free plan.