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GoPOS - systemy dla gastronomii

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GoPOS - systemy dla gastronomii

Have a question about using GoPOS?

Contact us to arrange a meeting and select solutions for your premises. We especially recommend contact via chat.

Home / Integrations / Others / KSeF

Krajowy System e-Faktur (KSeF)

Krajowy System e‑Faktur is changing the way invoices are issued in Poland. With GoPOS, you can be sure that your invoices are compliant, secure, and automatically sent to KSeF - without unnecessary complications.

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Krajowy System e-Faktur (KSeF) Krajowy System e‑Faktur is changing the way invoices are issued

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What is KSeF?

What is KSeF?

Krajowy System e-Faktur is a central platform of the Ministry of Finance that enables issuing and storing invoices in a uniform electronic format.

The only legally valid form of an invoice is a document saved as an XML file and registered in the system. Each invoice receives a unique identification number that confirms its validity. A printout from a fiscal printer or a PDF sent by email is only a visual representation of the invoice - it does not constitute a legal document.

When does KSeF become mandatory?

When does KSeF become mandatory?

Depending on the size of the company and its turnover, the use of KSeF is being introduced gradually.

  • 1 luty 2026 r. - The largest taxpayers whose turnover in 2024 exceeded PLN 200 million.
  • 1 kwietnia 2026 r. - Other companies, including sole proprietorships.
  • 1 stycznia 2027 r. - Micro-enterprises with a monthly turnover of up to PLN 10,000.

Full GoPOS Integration with KSeF

Monitor every aspect of your business with precision and maximum convenience, using any data at your fingertips.

Issuing Invoices

Issue invoices directly on the POS and in the web application, and send them to KSeF in real time.

Document Monitoring

Check the status of invoices sent and not sent to KSeF, and queue documents in offline mode.

Data Integration by VAT Number

Enter the VAT number, and GoPOS will automatically fetch company data from GUS, enabling fast, error-free invoice issuance.

Issuing Invoices

Issue invoices directly on the POS and in the web application, and send them to KSeF in real time.

Advantages of using KSeF

Advantages of using KSeF

Although KSeF may seem like another formal obligation for many entrepreneurs, its introduction brings real benefits for companies. With the right tool - such as GoPOS - KSeF can significantly simplify daily operations.

  • Faster VAT refunds in up to 40 days thanks to central invoice verification.
  • No need for manual document archiving.
  • Fewer invoice errors due to the structured format.
  • Accounting automation and easier settlements.
  • Access to the full invoice circulation history.
  • Full compliance with regulations and secure settlements.
Streamline sales and control all data

Streamline sales and control all data

Choose the system that fits your business needs and sell in just 3 clicks. Free and easy invoicing, and gain full access to all data on your sales in a convenient reporting format.

  • Handle sales faster with a simple and intuitive interface.
  • Monitor everything remotely from any device, anywhere in the world.
  • Reduce analysis time and receive consolidated comparative reports.
  • Take advantage of an All in One solution combining POS, fiscal printer, and payment terminal, saving up to 70% compared to a traditional POS setup.
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Chcesz wiedzieć więcej o KSeF?

Przygotowaliśmy zestaw praktycznych materiałów, które pomogą Ci lepiej zrozumieć KSeF i bezpiecznie wdrożyć go w swojej firmie.

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Frequently asked questions

Tips and answers from the GoPOS Team.

Yes. GoPOS is integrated with Poland’s National e-Invoicing System (KSeF) - you can issue invoices from the POS terminal or the web app. Documents are sent to KSeF automatically or after manual confirmation, depending on your settings.
Yes - it’s usually a one-time setup. Generate a KSeF token (2.0) in the KSeF Taxpayer Application and paste it into the invoice settings in GoPOS. From that point on, the system can send invoices to KSeF. Ultimately, GoPOS will also offer certificate-based integration - a more advanced authentication method that enables, among other things, issuing invoices in offline mode.
After you enter the NIP, the system automatically pulls the company data from the GUS database - the full legal name and address. If the NIP is valid and the data is available in GUS, it will be filled in automatically, which reduces errors.
In the GoPOS web app, each invoice shows its KSeF status - you can see whether it is pending confirmation, has been accepted (with a KSeF number and QR code), or requires resubmission. On the dashboard, you’ll also find an alert with the number of approved invoices that have not been sent to KSeF.
Yes. In the settings, you’ll find the toggle “Send invoices to KSeF automatically”. When it’s enabled, every approved invoice is sent to the system right away. If you prefer to control the process manually, leave the option disabled and send invoices at a convenient time from the invoice preview.
No - you cannot change the content of an e-invoice once it has been registered in KSeF. Corrections are made only by issuing a corrective invoice. In GoPOS, after sending to KSeF, most fields are locked to avoid discrepancies between the system and KSeF. You can only change the payment method or mark the invoice as paid - these changes do not require resending to KSeF.
KSeF provides contingency modes. If an official KSeF outage is announced, you have 7 business days to submit invoices after the outage ends. If you have a short-term connectivity issue on your side, you must submit them by the next business day. The exception is a total outage (announced in the media). Full offline-mode support requires a KSeF certificate - GoPOS is working on implementing this feature.
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