On Web, iOS, Android and React Native, we support the following Klarna flows:
  1. Pay Now
  2. Pay Later: Pay in 30 days
  3. Pay over time: Pay in 3-4 instalments. First payment right away, then the rest in instalments (no interest)
  4. Fair financing: Instalment plans of 6, 12, 24, and 36 months with flexible payments (with interest)

​
Get started with Klarna

​
Before you begin

If this is your first payment method, make sure to follow the Get started guide to begin processing payments with Primer.

​
Configure in the Dashboard

  1. Add Klarna payment method to your Dashboard
Go to the Connections section of the Dashboard and look for Klarna. Follow the instructions to connect your Klarna processor account to your Primer Dashboard.
  1. Activate Klarna on the Checkout
Go to the Checkout section of the Dashboard and activate the Klarna payment method. Then go to the settings view of Klarna, and make sure that Klarna is properly set up to use your Klarna processor account.
  1. Configure a Workflow to process payments made with Klarna
Go to the Workflow make sure your Klarna processor is used to process payments made with Klarna.

​
Prepare the client session

Klarna leverages the following parameters to process a payment. Pass them when creating the client session.
Parameter NameRequiredDescription
currencyCode✓3-letter currency code in ISO 4217 format, e.g. USD for US dollars
order
↳ lineItems		✓Details of the line items of the order
order
↳ countryCode		✓The country code of the user.Learn more about the supported countries and currencies by visiting Klarna Documentation.
customer
↳ emailAddress		Customer’s email address. Pass this value to pre-fill the Klarna payment form.
customer
↳ mobileNumber		Customer’s mobile number (make sure it is the correct format for the country code). Pass this value to pre-fill the Klarna payment form.
customer
↳ shippingAddress		Customer’s shipping address. Pass this value to pre-fill the Klarna payment form.
customer
↳ billingAddress		Customer’s billing address. Pass this value to pre-fill the Klarna payment form.
When passing customer.billingAddress in the client session, ensure that Klarna has payment method categories configured for the given address. If Klarna is not supported for the given billing address, no Klarna button will be rendered in the checkout
.
paymentMethod
↳ options
↳ KLARNA
↳ extraMerchantData		Extra Merchant Data (EMD) package supported by Klarna can be passed via the client session. Any JSON object that will be accepted by Klarna can be sent. Available schemas are documented here

​
Add Klarna into your website or mobile app

Drop-in UI

Use our customizable drop-in UI to quickly add payment methods to your checkout.

Headless Checkout

Have the freedom to build your own UI using our headless checkout.