S2K - send invoices from Stripe to KSeF
Seamless Stripe integration with Poland's National e-Invoicing System. Automatic invoice submission to KSeF directly from your Stripe account.
How it works
Install
Add S2K to Stripe with one click from Marketplace
Connect to KSeF
Authorize with a certificate or electronic signature
Done!
Invoices are sent automatically. Monitor statuses in the panel.
Why S2K?
Compliance without changing your processes
Create structured, KSeF-compliant invoices directly in your Stripe account — without installing any additional tools.
Choose your automation method
S2K allows you to send invoices manually (with one click) or fully automatically. You decide how much work to delegate.
Install the app in just a few moments
The app is available directly in the Stripe marketplace. Use it from a single dashboard — without manual data exports.
Check invoice processing status
Track invoice statuses, download UPOs, and see which documents were accepted by KSeF and which require correction — so you can be sure your obligations are met.
