- PL
KSeF for Shopify stores in Poland
What Poland’s national e-invoicing system means for an online store, in plain words.
Checked on 31 October 2026 against the government sources below.
KSeF, Krajowy System e-Faktur, is Poland’s national e-invoicing system. Since 1 April 2026 every business established in Poland issues its invoices to other businesses through KSeF, and from 1 January 2027 this applies to the smallest sellers too. Invoices to consumers do not have to go through KSeF. A Shopify store stays KSeF-ready when its invoicing platform, such as Fakturownia or inFakt, generates the structured invoices and sends them to KSeF.
Key dates
- 1 February 2026Businesses with 2024 sales above PLN 200 million start issuing invoices in KSeF. Every business in Poland must be able to receive invoices in KSeF.
- 1 April 2026All other businesses start issuing invoices in KSeF.
- 31 December 2026Last day for sellers with invoiced sales up to PLN 10,000 gross a month to issue invoices outside KSeF. Invoices printed on a cash register may also stay outside KSeF until this day.
- 1 January 2027KSeF is mandatory for every business established in Poland. Under the current law, penalties apply from this day.
- ProposedOn 20 October 2026 the government adopted a bill that moves the start of penalties to 1 January 2028. On 31 October 2026 Parliament had not passed it yet. The obligation to use KSeF does not move.
Invoices to companies and to consumers
Invoices to other businesses must go through KSeF. For a Shopify store this means every order from a buyer with a Polish tax number, the NIP, gets a structured invoice in KSeF.
Invoices to consumers, people who do not run a business, do not have to go through KSeF. A seller may still send them there voluntarily, and they do not count toward the PLN 10,000 monthly limit.
Cash register receipts follow their own rules. Ask your accountant how they apply to your store.
What your store needs
- A way to log in to KSeF: the trusted profile Profil Zaufany, a qualified signature or seal, a KSeF token or a KSeF certificate.
- An invoicing platform connected to KSeF that generates the structured invoice and sends it.
- A copy for the buyer. KSeF does not deliver invoices to buyers, so the seller still sends a copy, for example by email.
When KSeF is not available
- Offline mode chosen by the seller: send the invoice to KSeF by the next working day.
- KSeF unavailable: send it by the next working day after KSeF is back.
- KSeF failure announced by the Ministry of Finance: send it within 7 working days.
Selling to Poland from abroad
A seller with no seat and no fixed establishment in Poland does not have to use KSeF, but may use it voluntarily. Whether your business has a fixed establishment in Poland depends on your setup, so check it with your tax adviser.
Stay compliant automatically with Make It Easy!
Our apps generate the documents in your invoicing platform automatically from every Shopify order. Your invoicing platform sends them to the tax authority.
Fakturownia Integration
Fakturownia Integration is a Shopify app by Make It Easy! that generates VAT invoices, proforma invoices, prepayment invoices and final invoices in Fakturownia automatically from Shopify orders. Setup takes 3 minutes, and there is a 7-day free trial.
inFakt Integration
inFakt Integration is a Shopify app by Make It Easy! that generates VAT invoices, OSS invoices, proformas and final invoices after a proforma in inFakt automatically from Shopify orders. Setup takes 3 minutes, and there is a 7-day free trial.
Questions and answers
Does a Shopify store in Poland have to use KSeF?
Yes, if the store is run by a business established in Poland and it invoices other businesses. Large businesses have used KSeF since 1 February 2026, all others since 1 April 2026, and sellers with invoiced sales up to PLN 10,000 gross a month from 1 January 2027.
Do invoices to consumers have to go through KSeF?
No. Invoices to people who do not run a business are not mandatory in KSeF. A seller may send them to KSeF voluntarily.
When do KSeF penalties start?
Under the current law, from 1 January 2027. A government bill adopted on 20 October 2026 moves the start to 1 January 2028; on 31 October 2026 Parliament had not passed it yet.
Does the Make It Easy! app send my invoices to KSeF?
No. The app generates the documents in Fakturownia or inFakt automatically from your Shopify orders, and they are sent to KSeF from your invoicing platform.
I sell to Poland from another country. Does KSeF apply to me?
Not if your business has no seat and no fixed establishment in Poland. You may still use KSeF voluntarily. Check your setup with your tax adviser.