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Get started with Kustom

Learn how to apply for Kustom Checkout and what to expect during the onboarding process.

Updated this week

Apply for Kustom Checkout

To begin, apply for an agreement with Kustom by filling out the onboarding form at Kustom.co.

Once your application is submitted:

  • You'll receive an email with instructions on how to log in to the Kustom Portal.

  • If we need any additional information, we'll contact you via email.

Checklist: Requirements for your Kustom agreement

Before applying, make sure your business meets the following criteria:

  • Your company is officially registered.

  • You have a registered IBAN for payouts.

  • Your online store is live and equipped with a functional e-commerce or booking system.

  • Your store offers a selection of products and/or services for purchase.

  • The following information is clearly visible on your website:

    • Registered business name

    • Registered business address

    • Company registration number

    • Customer support email address

    • Return policy and procedure

    • Cancellation policy - if applicable.

We may request additional information after onboarding. Be sure to submit all required details promptly.

Prohibited and restricted business segments

Some business types are not eligible for Kustom Checkout. Please review our Prohibited and Restricted Segments to ensure your business qualifies.

Troubleshooting onboarding form errors

If you encounter errors when filling out the onboarding form, try the following:

  • Clear your browser’s cache and cookies.

  • Use a different browser (e.g. Chrome, Edge).

  • Try using an incognito/private browsing window.

  • Complete the form from another device.

If the issue continues, contact our Merchant Service team for assistance.

Integration

Once your application has been approved it is time to integrate Kustom with your online store. In order to do so you need to generate API credentials and activate those in your platform backend. To generate your API credentials:

  • Log in to the Kustom Portal

  • Go to the Integration tab and click on "Add API Key"

These API credentials should then be added to the Klarna plugin that can be dowloaded in your backend.

Note that the Kustom plugin in still under development and that you need to use the Klarna plugin for the time being in order to integrate Kustom in your online store.

Frequently asked questions

Application under review


If your application is under review, we may request additional information. To avoid delays, respond to all requests as quickly as possible.

Application approved

Once approved, you’ll be able to:

  • Start transacting with Kustom Checkout.

  • Receive payouts according to your scheduled payout plan.

Approval may happen immediately or after you've submitted the required documentation.

Application rejected

Your application may be declined for one of the following reasons:

  • Business segment: Your business type falls under a high-risk category. See our Prohibited and Restricted Segments for more details.

  • Incomplete documentation: You did not provide the necessary information.

  • Creditworthiness: Your company’s credit assessment did not meet our requirements.

You will receive an email outlining the reason for the rejection.

Additional information

As part of the Know Your Customer regulations, Stripe is responsible to verify that the information you have provided is correct. During this process you may be asked to provide additional documents for verification purposes.

When additional information is needed you will be notified in Kustom Portal and the upload of the documents is done directly through the Portal.

Accepted documents

You will be able to see what documents are accepts for identity, address and company verification in the upload widget in Kustom Portal.

Supported platforms

Supported Partners

Below you will find a list of Platform Partners that Kustom supports.

  • Askås

  • Abicart

  • Geins

  • Cateno

  • Centra

  • E37

  • Finqu

  • Kodmyran

  • Litium

  • Multicase

  • Mystore

  • Confirma

  • Norce

  • Nyehandel

  • Oxid

  • Optimizely

  • Pulse247

  • Quickbutik

  • 24 Netbutikk

  • Starweb

  • Talex

  • Unimicro

  • Vendre

  • Vilkas

  • Visitgroup

  • Viskan

  • Visma Webshop

  • Wikinggruppen

  • Nordisk E-handel

  • r360

Plugin Platforms

Below you will find a list of Plugin Platforms that Kustom supports

  • Adobe Commerce

  • PrestaShop

  • Salesforce Commerce Cloud

  • WooCommerce

Application timeline

Once your application is submitted, it will go through a standard review process. If any additional information is required, you will receive a prompt in the Kustom Portal asking you to provide the necessary details. Be sure to check the portal regularly to avoid delays in processing your application.

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