Skip to content

Notaly

Start free

Blog

KSeF

How Poland's National e-Invoice System works in practice: sessions, statuses, UPO and the rules that apply to your API calls.

25 postsRSS feed

Page 3 of 3

Integrations
KSeF for WooCommerce and Shopify: how to connect your store

A WooCommerce or Shopify store can issue KSeF invoices through a plugin or through a KSeF API such as Notaly's, which turns each order into a FA(3) invoice and submits it automatically. You do not need to write FA(3) XML or run your own KSeF integration. For most stores the API route is the fastest way to add e-invoicing without a Poland-specific engineering project.

TomekOct 12, 20262 min read

Issue your first KSeF test invoice today

Create a sandbox account: API key in seconds, 3 free test invoices on KSeF TEST, no credit card.

Try it in the sandbox Read the API docs