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What it is
The National e-Invoicing System: a state platform run by the Ministry of Finance. An invoice between businesses is created in KSeF, receives a KSeF number and reaches the recipient through the system, not by e-mail.
KSeF in plain words
The National e-Invoicing System: what it is, when it applies and what your company has to do. Status: October 2026.
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Since when
From 1 February 2026 for the largest companies (sales above PLN 200 million in 2024), from 1 April 2026 for all others. The smallest businesses (sales up to PLN 10,000 per month) may still issue invoices outside KSeF until the end of 2026.
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Who it applies to
Companies with a registered office or fixed establishment in Poland, when selling to other businesses. Ordinary invoices can still be issued to consumers.
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Foreign client
An invoice for a foreign company is also issued in KSeF; the client receives it as a PDF with a QR code confirming that it is in the system.
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How to log in
With a Trusted Profile, a qualified signature or a KSeF certificate. The management board grants permissions to the accountant or accounting firm.
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When the system is down
Offline mode: you issue an invoice with a QR code and send it to KSeF no later than the next business day.
how we help
KSeF ready from day one
KSeF setup is included in the Business Package and in HLBC accounting.
- We grant KSeF permissions to the management board and accounting
- We connect your invoicing software or accounting firm
- We set up invoicing for clients in Poland and abroad
- We show you how to receive purchase invoices
Legal basis: VAT Act. Official information: ksef.podatki.gov.pl.
How we can help
We will do it for you
An attorney-at-law handles your matter from the first conversation to the result. Fixed price, agreed in writing before we start.
Company registrationCompany registrationCompanyWe set up limited liability companies, joint-stock companies, branches and representative offices, and take them all the way to their first invoice.
Shelf companiesShelf companiesQuick startClean Polish limited liability companies set up by us, VAT-registered and ready for handover within a few days.
Legal servicesLegal servicesPrawoOngoing legal services for companies with foreign capital, with an attorney-at-law who replies in your language.