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Affirm lets eligible shoppers split a purchase into installments at participating merchants. At checkout, you review an offer and its repayment terms; depending on the plan, you may pay no interest or pay interest. Approval, available plans, rates, and down payments can vary by purchase and shopper. This U.S.-focused guide explains the purchase flow, costs, credit considerations, and what happens if you return an item.
How does Affirm work at checkout?
Affirm is a buy now, pay later financing service. When a participating merchant offers it, you select Affirm, complete an eligibility check, review the available loan offer, and accept a plan if you want to proceed. Affirm describes repayment as monthly or biweekly, depending on the plan. The merchant fulfills the order, and you make payments to Affirm under the loan terms.
- Select Affirm: Choose it as the payment method at a participating merchant.
- Review eligibility and offers: Affirm evaluates the application and shows any available plan options. Approval is not guaranteed.
- Compare the terms: Check the APR, total repayment amount, any down payment, installment amount and dates, and plan length.
- Accept only if the terms work for you: After accepting an offer, repay Affirm according to its schedule.
If Affirm does not appear at a merchant’s checkout, Affirm says an eligible shopper may be able to use its app to create a one-time-use virtual card for an online or in-store purchase. Card access and financing terms have their own eligibility requirements; availability is not assured. Affirm’s merchant explainer
What payment plans and interest does Affirm offer?
Affirm describes short-term installment options, including Pay in 4, and monthly installment loans. The plans offered depend on the transaction and merchant, and a down payment may be required.
#1 Best Overall
| Plan type | What the company states | What to check before accepting |
|---|---|---|
| Pay in 4 | Affirm’s consumer terms state 0% APR. | Confirm the payment amounts and dates shown for your purchase. |
| Other pay-over-time plans | Affirm’s consumer terms state a range of 0% to 36% APR, subject to credit and eligibility. | Review your actual APR, total repayment, down payment, payment schedule, and duration; the range is not a guaranteed offer. |
Affirm says interest on its loans is simple interest, calculated on the original principal rather than compounded interest. Its Help Center says the APR offered may depend on your credit history and score, the item price, the store, and your repayment history. How interest works
Affirm says it does not charge late fees, prepayment fees, annual fees, or fees to open or close an account. That does not mean every plan is free: interest may increase what you repay. The terms for your specific transaction show the cost you are agreeing to. Affirm’s merchant explainer
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How should you compare Affirm offers?
Compare the actual offers for the same purchase rather than judging by the installment amount alone. A lower payment can reflect a longer repayment period, and an interest-bearing plan can cost more overall.
- APR: Identify whether the plan is interest-free or carries interest.
- Total repayment: Compare the full amount due, not just each installment.
- Down payment: Check what is due at purchase and how it affects the remaining payments.
- Payment timing: Note the frequency and dates so you can assess whether they fit your budget.
- Duration: Compare how long repayment lasts.
- Return policy: Check the merchant’s return window and any restocking or return charges, which can affect the loan balance after a refund.
Affirm’s consumer terms describe eligibility and plan variation; its interest guidance explains factors that can affect APR.
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1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problemsDoes checking eligibility or using Affirm affect credit?
Affirm says creating an account or checking eligibility, including purchasing power, is treated as a soft inquiry that may be reported to credit bureaus but does not affect credit. It also says a purchase and related activity—such as payment history, credit used, and length of credit history—may affect a credit score, and that a plan or repayment activity may be reported. Reporting can vary; these statements do not establish one result for every product, lender, or borrower. Affirm’s merchant explainer
Prequalification or purchasing power is an estimate, not guaranteed approval or a promise that you can borrow a particular amount. Checking an estimate does not commit you to borrow; borrowing requires accepting an actual offer for a purchase. Rates and offers depend on eligibility and transaction details.
Rank #4
What happens if you return or cancel an order?
You return the item through the merchant, which must process the refund and send it to Affirm. Affirm says it then adjusts the loan: depending on the refund amount and timing, the loan may be voided or its principal and payment schedule changed. Payments remain due until the refund reaches Affirm and is applied. Affirm’s returns and cancellations guidance
Affirm’s Help Center says merchants can take up to 21 days or longer to process a return; Affirm may need additional time after that to update the account. This is the company’s stated process, not a guarantee of a particular merchant’s timing. Store credit does not automatically pay off the Affirm loan, and return or restocking fees may leave an outstanding balance.
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How does Affirm make money?
Affirm says it earns commissions or fees from merchants and interest income on some consumer loans. In its fiscal 2026 Form 10-K, Affirm Holdings, Inc. described three principal loan offerings: Pay-in-X, 0% APR monthly installment loans, and interest-bearing monthly installment loans. The filing says its interest-bearing transactions use simple interest and that the company does not charge deferred interest, compounding interest, or late fees. Affirm investor relations SEC filings
The same company filing reported $50.2 billion in consumer purchase gross merchandise volume facilitated for the fiscal year ended June 30, 2026. That is company-reported transaction volume; it does not measure consumer savings or establish whether a plan is suitable for an individual borrower.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
