Stripe Integration with KSeF: Direct Connection to Poland's e-Invoicing System
What is KSeF and why it matters for Stripe users
The National e-Invoice System (KSeF) is Poland's central platform by the Ministry of Finance for issuing, transmitting, and storing structured e-invoices in XML format. Since 2026, the system is mandatory for entrepreneurs. Large companies (revenue over 200M PLN) must issue e-invoices from February 1, 2026, and other entrepreneurs from April 1, 2026.
Stripe is a global payment platform - but it doesn't offer Polish VAT invoice generation or KSeF integration. That's why you need a tool that converts Stripe transactions into e-invoices and submits them to KSeF.
Direct Stripe to KSeF integration via Striptu
Striptu now offers a direct connection to KSeF - without requiring an external accounting program. Here's how it works:
1. Connect Stripe to Striptu - authorize access to your Stripe account. From that moment, Striptu receives information about new transactions.
2. Configure KSeF connection - enter your KSeF token generated in the Ministry of Finance system. Choose your environment (test, demo, or production).
3. Striptu generates the e-invoice - when a payment appears in Stripe, Striptu creates a VAT invoice in KSeF-compliant XML format. The document includes customer data, amount, VAT rate, numbering, and all required fields.
4. Automatic KSeF submission - the invoice is sent directly to the National e-Invoice System. You receive a KSeF identification number confirming document registration.
5. PDF delivery to customer - optionally, Striptu sends the invoice PDF to the customer's email address.
The entire process happens automatically - from Stripe payment to registered e-invoice in KSeF.
Alternative: integration through accounting software
If you already use Polish accounting software, you can still use it as an intermediary between Stripe and KSeF. Striptu integrates with:
| Accounting software | How it works with KSeF |
|---|---|
| Fakturownia.pl | Striptu creates an invoice in Fakturownia, which automatically submits it to KSeF |
| wFirma | Automatic sales invoice submission to KSeF with KSeF number retrieval |
| inFakt | KSeF integration with automatic e-invoice submission |
| iFirma | Support for invoice submission to KSeF |
- You don't need a full accounting program
- You want to simplify your tool stack (fewer accounts, less configuration)
- Speed matters - fewer intermediaries mean less delay
When to choose integration through accounting software?
- You already use Fakturownia, wFirma, inFakt, or iFirma
- You need additional accounting features (tax books, JPK reports, VAT settlements)
- You want all invoices in a single accounting system
Benefits of automatic Stripe to KSeF integration
- Time savings - invoices are generated automatically after each payment
- Legal compliance - e-invoices in KSeF-compliant XML format with all required fields
- Fewer errors - data from Stripe transferred automatically (tax ID, address, amounts)
- Fast submission - invoices reach KSeF almost immediately after payment
- 150+ tools - we handle transactions from Kajabi, Substack, Podia, MailerLite, Lovable, Replit, and many other platforms using Stripe
How to get started
1. Create a Striptu account - registration takes a minute
2. Connect your Stripe account
3. Choose your KSeF submission method: directly or through accounting software
4. Configure your KSeF token or accounting software API token
5. Test on the first 10 transactions for free
Have questions? Contact our technical support - we'll help you set up the integration.
Fast Stripe to KSeF integration. Connect Stripe with Fakturownia.pl, iFirma, wFirma, or inFakt.
You only need a few minutes to invoice Stripe payments and send them to KSeF. Over 150+ tools like Substack, Kajabi, Podia, MailerLite, Lovable, or Replit can be settled in Poland thanks to our integration. Automate the process. Issue invoices compliant with Polish law and send them automatically to KSeF.