KSeF
KSeF readiness: specific, with no rounding up
Support for the National e-Invoicing System is Zaksio's number one priority. Below is the status as of today.
| Area | Status | Notes |
|---|---|---|
| KSeF 2.0 and the FA(3) schema | Works on TEST | The integration package is tested on the Ministry of Finance test environment. |
| Receiving and importing purchase invoices | Works on TEST | FA(3) invoices go to Anna's account assignment and to the approvals queue. |
| Issuing sales invoices and UPO | Works on TEST | Gap-free numbering, submission and the official confirmation of receipt. |
| Credit notes (KOR) | Works on TEST | Upward and downward corrections, a file compliant with the XSD schema. |
Obligation
When KSeF applies to your business
Deadlines depend on the size of the business
The obligation to use KSeF is being introduced gradually from 2026, and the smallest businesses come under it later. You can check the exact schedule in the Ministry of Finance announcements; the KSeF rules and API have changed before, so we don't repeat dates here that could become outdated.
What Zaksio does on the data side
- The KSeF token is stored in encrypted form
- Purchase invoices go to account assignment and the approvals queue, not straight into the ledger
- Invoice content is treated as data, not as instructions for the agent
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