Affirm

Affirm is ranked #2 of 26 in buy now, pay later apps on The Finance Base. It runs on Android, API, Browser extension, iOS, Web.

Affirm plans and pricing

All plans

Pay in 4 Not published four interest-free payments every two weeks orders $50–$249.99 · 0% APR docs.affirm.com · 1 Oct 2026

Installments Not published monthly installments 3–60 months · orders up to $25,000 docs.affirm.com · 1 Oct 2026

Adaptive Checkout™ Not published four interest-free payments every two weeks or monthly installments monthly installments up to 36 months docs.affirm.com · 1 Oct 2026

Compared on buy now, pay later apps

Free plan: Yes
Checkout channels: omnichannel
Repayment terms: 4 interest-free payments every 2 weeks; installments from 6 weeks to 36 months; monthly or biweekly payments
Merchant platforms: Adobe Commerce, BigCommerce, Salesforce Commerce Cloud, SAP Commerce, Shopify, Wix, WooCommerce, Acadaca, Lightspeed Ecommerce, Miva, OpenCart, Oracle Commerce, Shift4Shop, VTEX, Volusion
Consumer regions: United States, Canada, United Kingdom
Merchant dashboard: Yes

Best Affirm alternatives

See all 12

7.0 Sunbit See plans price on the maker's page

6.9 Atome Free free plan, no paid price published Free plan

6.9 Kueski Pay See plans price on the maker's page

6.9 Sezzle $13.99/mo first paid tier

6.9 Tabby Free free plan, no paid price published Free plan

6.9 Zip See plans price on the maker's page

Affirm

Product type: Affirm is a buy now, pay later service that lets customers use financing to complete purchases on merchant sites.
Fees: Affirm says it never charges consumers late or hidden fees.
APR: Affirm states that rates are 0–36% APR based on credit and that Pay in 4 is 0% APR.
Underwriting: Affirm underwrites every individual transaction using data beyond traditional credit scores, including transaction history and credit usage.
Direct API: The Direct API uses the Affirm.js SDK and supports Capture, Void, and Refund API calls.
Mobile integration: Affirm provides mobile SDKs for Android and iOS with prebuilt UI components.
Integrations: Affirm lists integrations with Shopify, Wix, BigCommerce, Adobe Commerce, Salesforce Commerce Cloud, SAP Commerce, WooCommerce, Stripe, Adyen, Worldpay, and other platforms and payment service providers.
API environments: Affirm provides separate sandbox and live API environments at sandbox.affirm.com and api.affirm.com.
Security: Affirm says it uses industry-standard encryption in transit and at rest, is a PCI DSS Level 1 Service Provider, and maintains SOC 1 and SOC 2 Type 2 reports.
Support: Affirm provides a consumer Help Center and a business support center.
Merchant audience: Affirm says more than 337,000 merchants use its flexible payment options.
Consumer access: Affirm offers a mobile app, a Google Chrome browser extension, and Apple Pay and Google Pay wallet support.
Founded: 2012
Headquarters: San Francisco, California, United States

Visit site Alternatives

Where it ranks on The Finance Base

Best Buy Now, Pay Later Apps in 2026#2 of 26

Is Affirm yours?

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.

Claim it free Promote Affirm

Sources

docs.affirm.com/developers/docs/solutions-we-offer· checked 1 Oct 2026
investors.affirm.com/investor-relations/· checked 1 Oct 2026
affirm.com· checked 1 Oct 2026
investors.affirm.com/investor-resources/investor-faqs· checked 1 Oct 2026
docs.affirm.com/en-GB/developers/docs/platforms-we-supp· checked 1 Oct 2026
docs.affirm.com/developers/reference/introduction· checked 1 Oct 2026
investors.affirm.com/static-files/d9f3f979-6a9b-4aff-9a71-f5· checked 1 Oct 2026
affirm.com/business· checked 1 Oct 2026
docs.affirm.com/developers/docs/home-introduction· checked 1 Oct 2026