Whether you’re using an e-commerce platform or integrating directly with our APIs, getting up and running with Affirm is quick and easy. Our docs provide step-by-step guidance for adding Affirm to your site, creating effective promotional messaging, and managing your Affirm account.


These pages are dedicated resources for Affirm's merchant partners and developers. If you are a consumer, please visit our Help Center.

What is Affirm?

Whether your customers are planning to take a trip, upgrading some appliances, or just doing something kind for someone they care about, they are all looking for a way to buy the things they love. But the reality is, sometimes these purchases do not fit comfortably into their monthly budget. This is where Affirm comes in: We provide the option for your customers to buy now and pay over time, giving them financial flexibility and the confidence to say yes to that next big purchase.

You can find more on our FAQs.

How Affirm works

We make financing easy! Affirm offers a seamless way for your customers to pay-over-time for their purchases. Our simple integration gives you mobile-friendly solutions optimized for web, in-store, and telesales. We provide all the tools you need to integrate our pay-over-time solutions and set up your business to display monthly payment options, offer prequalification, and add Affirm at checkout.

Getting started

You can add Affirm to your e-commerce site with low development effort. With our various integration options, get up and running quickly - it's as easy as 1, 2, 3!

1. Set up your Affirm account

First, you will need a Merchant account to get Affirm up and running on your site. Once you create an account, you will have access to our Merchant Portal, a robust user interface that allows you to manage and configure your Affirm integration.

The Merchant Portal allows you to:

  • View transaction analytics
  • Manage transactions
  • Access your API keys
  • Start your integration


Learn more

To learn more about the Merchant Portal, head over to our Merchant Portal docs.

2. Choose your integration

Choose an integration that works best for your business. Whether that solution is with our APIs, our Omnichannel solution that offers flexible payments everywhere your customers shop, or one of our e-commerce platform extensions. Check out our most popular integrations below.

3. Add Affirm to your e-commerce platform

Now that you have signed up for Affirm, created your Merchant account, and logged into the Merchant Portal, you are ready to integrate Affirm into your online store.



We are here to help!

If you have any questions or comments, please do not hesitate to reach out.

Merchant partners: For developer or integration questions, please use our support widget at the bottom of your screen.

Consumers: If you are an Affirm customer with questions about your application, loan, or account, please visit our Help Center.