Getting started with Klarna in your Shopify store is easy.

Sign up with Klarna

Already have a Shopify store? Sign up with Klarna to add flexible payment options.

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Integrate smooothly

Once you’re a Klarna retailer, you can integrate in no time.

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On-site messaging

Boost your business with on-site messaging available to add to your shop.

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How do I get set up?

After you sign up as a Klarna retailer, integration is a breeze.

1. Sign up with Klarna

To get started, you’ll need to create a merchant account and sign up with Klarna.

Get started

2. Get your Klarna API credentials

Generate new API credentials by going to Settings in the Merchant portal. Download and open the file, as you'll need these API credentials in the next section.

Generate API credentials

3. Install Klarna in your Shopify store

Head to the Klarna Payments setup wizard to guide you through the integration for Shopify. Follow the 3 quick steps to get Klarna on your store.

Go to setup wizard

4. Place a trial purchase

Check out the smoooth experience by buying an item with Klarna from your store. After placing the order, go to Orders in Merchant Portal, and cancel the order (make sure you don’t pay yourself)!

Visit the merchant portal

5. Boost your sales!

Use On-site messaging to show your shoppers that Klarna payment methods are available throughout the shopping journey. Your customers will see tailored messaging, while you see an increase in your average order value.

Learn more

Read the full integration guide.

Get the guide

Payment methods that boost sales.

Up your conversion rate by 30% with Klarna in your checkout.


Offer up to 36 months to pay.

Give your customers the flexible option to buy now and spread the cost with monthly payments.

Pay in 30 days

Offer an extra 30 days to pay.

Let your customers try before they buy by offering an extra 30 days to complete their payment. No fees.

America’s biggest brands and consumer communities are shopping with Klarna.

Take the first step to smooth shopping and add Klarna to your store.