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:
Sign in to Kustom Portal with the email used in the application to provide additional information if prompted.
If any further information is needed, we'll contact you via email.
What to expect when applying for an agreement with Kustom
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.
A flowchart for the Kustom Onboarding
Set up your store in the Kustom Portal
When you sign in to the Kustom Portal for the first time, the Welcome page guides you through setting up your store. There are three steps to complete before you can take payments: verify your business, connect your store and set up shipping.
You can leave at any time and pick up where you left off. Click a step to open it.
1. Verify your business
Financial regulations require us to verify who you are before you can take payments. Verification has five steps and takes about 10 minutes.
What you will need
Company details. Your organisation number and registered address. We fill in what you gave us when you signed up.
Owners. The name and date of birth of everyone who owns 25% or more of the company.
ID documents. A passport or national ID for the representative and each owner, plus proof of ownership.
Bank account. The IBAN of the company account you want your payouts paid into.
Click Verify your business, then Start verification, and follow the steps.
For help with documents and common reasons they are rejected, see How to complete KYC verification in the Kustom Portal. For bank account requirements, see Changing bank account.
2. Connect your store
Your e-commerce platform needs a Kustom API key to communicate with Kustom. The key works like a username and password for your store. It lets your platform create orders in Kustom Checkout, so your checkout cannot take payments without it.
The API key consists of a Key ID and a password. Where you enter them depends on how your store is built:
Plugin platforms, such as WooCommerce, PrestaShop or Adobe Commerce: you enter the Key ID and password in the Kustom plugin settings.
Platform partners, such as Centra or Starweb: you usually enter them in the platform's payment settings, or send them to your platform partner.
Your own integration: your developer adds them to your integration.
How to generate your API key
Click Connect your store.
Click Generate API key.
Add the Key ID and password to your platform as described above. If someone else manages your platform, share them securely.
For help finding your credentials later, see Finding your API credentials in the Kustom Portal. For guides per platform, see Integrating Kustom Checkout.
3. Set up shipping
Connect your shipping provider so your customers can choose how their order is delivered. The setup has five steps.
Click Set up shipping, then Start shipping setup, and follow the steps. If you sell tickets or services and do not ship anything, you can tell us so during the setup.
Already done a step?
If you have already completed a step outside the guide, open it and click Mark step as done to tick it off.
Try it out in the playground first
Want to test your checkout before your business is verified? Click Open playground on the Welcome page. The playground is a test environment with test payments, so you can try your checkout while we verify your business. Nothing is charged.
Read more in Accessing the Playground Account from the Kustom Portal.
Invite your team
You can add colleagues who can help with the setup, such as an owner who needs to verify their identity or someone from your finance team. Click Invite users on the Welcome page.
Read more about roles and access in User management.
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
Additional information may be requested 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.
Supported platforms
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