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When can I start integrating Klarna?

As soon as your application is approved, you’ll be able to log into the

and start your integration. If you are on one of our partnered platforms, you may have access to the Integration Guides section of the Merchant Portal. There you’ll find step-by-step instructions and can follow the on-screen prompts. generate and start the integration. 

If you are not on a partnered platform, or don’t see your platform listed, you’ll be able to generate your own

and follow the integration instructions provided to you. 

API calls are how your system and Klarna’s system communicate. Klarna API credentials are used to authenticate the API calls your system sends to us. In this way, you protect your business, and we keep our services secure.



Monthly financing through Klarna and One-time card bi-weekly payments with a service fee to shop anywhere in the Klarna App issued by WebBank. Other CA resident loans at select merchants made or arranged pursuant to a California Financing Law license. Copyright © 2005-2024 Klarna Inc. NMLS #1353190, 800 N. High Street Columbus, OH 43215. VT Consumers: For WebBank Loan Products (One-Time Cards, Financing, Klarna Card): THIS IS A LOAN SOLICITATION ONLY. KLARNA INC. IS NOT THE LENDER. INFORMATION RECEIVED WILL BE SHARED WITH ONE OR MORE THIRD PARTIES IN CONNECTION WITH YOUR LOAN INQUIRY. THE LENDER MAY NOT BE SUBJECT TO ALL VERMONT LENDING LAWS. THE LENDER MAY BE SUBJECT TO FEDERAL LENDING LAWS.