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Compatible eCommerce Solution

Sell online with Shift4Shop and Affirm

With Affirm, you can offer quick, simple, and transparent financing that allows shoppers to pay over time for their most important purchases. Our mission is to provide products and services that empower people to advance their financial well-being.
Affirm Features


  • 20% Conversion Lift. Affirm reduces sticker shock and puts your items within the reach of more consumers. In third-party A/B tests with a sample of our partners, conversion increased by up to 20%.
  • Supports payment authorization, capture/settlement, and refunds just like a credit card.
  • Offers marketing tools to calculate and display monthly payment pricing on product pages.
  • +82 Net Promoter Score. Affirm is transparent, easy to use, and optimized for mobile—and our customers love it. We boast a Net Promoter Score of +82.
  • Merchant dashboard supplements transaction information available via Shift4Shop

Enabling Affirm modifies your payments page to accept Affirm as a payment type, and also adds Affirm as a payment processor allowing all authorizations, captures, and refunds to be processed through Shift4Shop. Additionally, Affirm provides promotional marketing tools to calculate and display estimated monthly payment amounts based on a product or a shopping cart price.

Build a complete eCommerce website with Shift4Shop

Everything you need to create, market, and grow your online store

Fully Customizable

Get your online store up and running in minutes with a choice of customizable, fully-optimized themes, while Shift4Shop handles the technical stuff.

Industry-Leading Security

Not only is Shift4Shop PCI compliant, we've gone above and beyond by integrating the 3-D Secure 2.0 protocol and a variety of anti-fraud tools.

Robust Shipping Tools

Display accurate real-time rates and provide tracking numbers to your customers. Plus, print labels right from your Shift4Shop dashboard.

Accept a Variety of Payments

Give customers a choice with over 200 supported payment providers. Accept credit cards, digital wallets, and more alongside Affirm.

Powerful SEO Tools

Shift4Shop has the best SEO features of any platform, like custom URLs, dynamic meta tags, page and link titles, and everything else you need.

Sell Everywhere

Modern mobile-friendly design lets customers shop from any device. Plus, sell on Facebook, Amazon, eBay, and more.

Common questions about using Affirm in your online store

How does Affirm work?
No, you only pay the monthly price, no additional fees.
How do I integrate Affirm in my website?
Yes, we can customize any of our plans to fit your needs. Contact our sales team at [email protected] to find out how we can add a specific feature to any plan or add extra staff users.
Are there any alternatives to Affirm?
Yes, there are other financing or Buy Now, Pay Later, solutions, including Klarna, Bread, Affirm and Sezzle.
Does Affirm purchases affect my credit score?
Affirm does a credit inquiry or "soft check" to verify the consumer identity but it doesn't have any impact on your credit score.
What is Affirm interest rate (APR) ?
Affirm's APR for purchases is in average range between 10% and 30% APR based on customer's credit. For details visit Affirm's website
Where can I use Affirm?
You can use Affirm at over 250 online stores, including
Can I use Affirm on Amazon or eBay?
No, neither eBay nor accept Affirm as a form of payment.
What's Affirm support phone number?
You can contact Affirm's customer service team for questions about your loan at (855) 423-3729.

Start Processing with Affirm & Shift4Shop

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