ATK-certified SEF: what it means and how to verify it
Where ATK publishes its SEF register of certified fiscal software, what certification means for receipts and how to verify a program.
The term certified SEF comes up more and more when businesses in Kosovo look for point-of-sale software. Here is what stands behind it — without jargon, and with the concrete steps to verify it yourself.
ATK SEF: where the public register is
The Tax Administration of Kosovo (ATK) keeps the list of software certified as SEF (Electronic Fiscal Software) in a public register: Certified SEF — apps.atk-ks.org/sefaplikimi/PublicSEF. For each SEF it shows the company, the software name, the SEF number, the version, the type and the certification date. If a program is not on that list, it is not a certified SEF — whatever the vendor’s website says.
The Kendrix POS entry in the register: apps.atk-ks.org/sefaplikimi/PublicSEF/Details/16.
What a SEF is
SEF stands for Electronic Fiscal Software (Softuer Elektronik Fiskal): a program, not a device, through which a sale is recorded, digitally signed and sent to the Tax Administration of Kosovo (ATK) straight from the point-of-sale system. The receipt it produces is a fiscal receipt.
For a program to be called a SEF, ATK evaluates and certifies it. The Commission for Registration and Certification of SEF checks whether the program meets the technical and functional requirements set out in Administrative Instruction No. 01/2026 (articles 32, 34 and 37) and, if so, lists it in the public register of certified SEF.
Why certification matters
With a certified SEF:
- fiscalization happens inside the program — no extra fiscal device and no manual procedures;
- every receipt is verifiable by the customer, through the QR code, on ATK’s site;
- the reports and registers ATK requires come out of the system, ready for inspection;
- corrections (returns, cancellations) are linked to the original receipt and reported automatically.
Without certification the receipt is not a fiscal receipt — however good the program is for daily work.
What happens at the moment of sale
The full flow, as it works in Kendrix POS:
| What happens | What it means for you |
|---|---|
| The receipt is digitally signed and sent to ATK | No action from the cashier |
| The receipt gets its unique identification number (NUIKF) | Printed on the receipt and used to verify it with ATK |
| The receipt gets a QR code | The customer scans it and verifies the receipt on ATK’s site |
| X and Z reports are updated | Ready for inspection, nothing to prepare separately |
When the internet drops, the receipt prints marked OFFLINE, waits in a secure queue and is sent automatically once the connection returns — within the legal deadlines.
How to verify a program’s certification
Always ask the vendor for two things and check them yourself:
- ATK’s public register of certified SEF (linked above), where you check the SEF name, number and version.
- The verification code of the commission’s decision, which you check on ATK’s verification page.
For Kendrix POS the data is public:
- SEF name: Kendrix POS · SEF no.: 812113983327 · Version: 1.2.4 · Type: Desktop Windows
- Certification date: 11 August 2026 · Verification code: ATK-2026-58CDEA0E
- Company: Kendrix Tech L.L.C., business no. 812307975
Both links, together with the full table, are on our fiscalization page.
What certification does not mean
Certification confirms that the program fiscalizes the way ATK requires. It does not tell you whether the program fits your business — whether it has tables for the restaurant, barcodes and scales for the market, or a patient record for the clinic. You assess those separately, with a demonstration. The checklist for choosing a POS →
If you would like to see Kendrix POS working with your own data, the demonstration is free — on site or remote.