As Klarna Checkout transitions to Kustom Checkout, please note that parts of this documentation are still being updated. You may come across references to Klarna, outdated screenshots, or broken links.

We’re working continuously to revise all content, and we appreciate your patience during this process.

Notice: Kustom is switching their API endpoints.
If your store is still using the old endpoints, a warning may appear in the Kustom Merchant Portal.
The change will be fully enforced on March 31.
→ Resolve the endpoint warning

Here you will find documentation on how to set up and configure Kustom Checkout for WooCommerce – payments and add-ons.

• Configuration
• Order management
• Recurring payments
• Optimizing your checkout when using an Iframe-based checkout
• The checkout flow
• Compatible plugins and themes
• Klarna On-site Messaging
• Kustom Shipping Assistant