Learn more about Sofort payment method and its workflow

Sofort (Klarna) is one of the most popular online payment method available in Germany and Austria. As with other redirect payment methods, when the customer selects their bank or specifies a BIC, they are redirected to their bank payment site to make the payment. Once the authentication and payment is done, they can be redirected back to your online shop.

Available in Supported currencies Redirect Refund Partial Refund Reversal Chargeback Recurring Payout Pay later Unzer Secured
Germany, Austria, Belgium, Italy, Spain, Netherlands tick tick tick cross tick cross cross cross cross


  • Payment security: The customer authenticates on their bank site, so there is no confidential data shared between the merchant and the customer.
  • Increased customer confidence: The Sofort/Klarna brand is recognized and trusted by customers, especially those in Western Europe.
  • Supported by all banks in Austria and Germany

Payment workflow

The following diagram explains workflow for Sofort payments.

Sofort workflow

Step 1: Create a Sofort payment type resource.

A resource ID is generated in the response and is used in the workflow to complete the payment.

Step 2: Make a charge transaction with the Sofort resource that you created.

Step 3: Forward the customer to the redirectUrl that is displayed in the charge response.

Step 4: Once the customer makes the payment on their bank portal, redirect the customer to the returnURL specified in the initial charge call.

Step 5: After the transaction, display the result to the customer in the front end of the online shop.

Integration options

You can choose the following options to integrate:


Quickly integrate with Unzer without any programming knowledge

Payment pages

Use pre-built, configurable all in one pages with your own mix of payment methods

UI Components

Use pre-built forms and quickly integrate with minimum work on the client side

Server side-only

Integrate with Unzer using your own payment form

Accept Sofort with UI components

Use Unzer UI component to add Unzer Sofort payment to your checkout page.

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Accept Sofort with server-side-only integration

Build your own payment form to add Sofort payment to the checkout page.

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Manage Sofort payment

Manage Sofort transactions.

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