A simple integration.

A better way to pay.

Promotional messaging highlights Affirm's alternative financing benefits, aiding shoppers during browsing and purchasing.

Expand your business by using our global APIs.

Learn about managing Affirm transactions to keep payments and order fulfillment in sync.

Discover how the Affirm checkout process works, with a step-by-step breakdown of the customer journey.

Explore key planning considerations for integrating Affirm, including setup and testing.

Use this guide to get started with integrating Affirm.

Use Affirm's APIs to build a customized integration with ease.

Affirm Lite offers a seamless pop-up checkout with simple integration steps.

With Landing Page, you can offer Affirm to your in-store customers.

Offer Affirm's flexible payment options to your customers in store and online.

Integrate Affirm using our iOS and Android libraries with pre-built components.

Redirect customers to the Affirm checkout flow from a text message or email.

Learn more about Affirm's APIs and their customizations for your integration.

Learn about Affirm.JS, Affirm’s browser-side JavaScript library.

Get started with integrating Affirm.

Review Affirm's code snippets and become a pro in no time.

Explore developer tools and resources for webhooks, formatting JSON, debugging APIs, and using CodePen.

Authorizing and capturing transactions is an essential part of the checkout process.

New to Affirm? See how to sign-up and activate your account.

Learn how you get paid with Affirm.

Review Affirm's marketing and compliance guidelines.