Affirm is a buy now, pay later service that lets you split purchases into smaller payments over time, either interest-free or with interest up to 36% APR depending on the plan. It’s available at over 330,000 retailers online and in stores, and it works by running a quick approval check at checkout before letting you choose a repayment schedule that fits your budget.
The Four Payment Plans
Affirm offers four distinct ways to pay, and which ones you see at checkout depends on the merchant and the purchase amount.
- Pay in 2: You split the purchase into two equal, interest-free payments. The first is due at checkout and the second two weeks later.
- Pay in 4: The purchase is divided into four equal, interest-free payments spaced two weeks apart. This is Affirm’s most common short-term option and works similarly to competitors like Klarna and Afterpay.
- Pay in 30: You get 30 days to pay the full amount with no interest. It’s essentially a one-month grace period on the purchase.
- Monthly payments: For larger purchases, Affirm offers installment loans ranging from a few months up to 36 or even 60 months. These may carry interest from 0% to 36% APR, depending on the merchant, your creditworthiness, and the purchase amount. Some retailers subsidize 0% APR promotions, while others pass along higher rates.
The shorter plans (Pay in 2, Pay in 4, and Pay in 30) are always interest-free. Monthly payment plans are the only option where you might pay interest, and Affirm shows you the total cost upfront before you commit, so there are no surprises.
How Checkout Works
When you’re shopping at a retailer that partners with Affirm, you’ll see it listed as a payment option during checkout. Select Affirm, and you’ll be asked to enter basic information: your name, email, phone number, and date of birth. Affirm then runs a soft credit check, which does not affect your credit score, to determine whether you’re approved and which payment plans are available to you.
If approved, you’ll see the specific plans offered for that purchase, including the payment amounts, schedule, and any interest. You pick the one you want, confirm, and the order goes through. Affirm pays the merchant right away, and you repay Affirm according to the schedule you chose. Payments are typically pulled automatically from your linked debit card or bank account.
You don’t need to create an Affirm account in advance. The process happens in real time at checkout, though having the Affirm app installed can speed things up and give you access to additional features.
Using Affirm In Stores and Beyond Partners
Affirm isn’t limited to online checkout buttons. If you download the Affirm app, you can generate a virtual card that works for in-store purchases at participating retailers. At checkout, you open the app, select your payment plan, and the app creates a one-time virtual card number you can tap or enter at the register.
The merchant network spans a wide range of categories: electronics, furniture, home appliances, fashion, fitness equipment, jewelry, and more. That said, Affirm is not accepted everywhere. You’ll need to shop at one of its partner retailers, and availability can vary by store location and purchase type.
Interest Rates and Fees
For monthly installment plans, APRs range from 0% to 36%. A $1,000 purchase at 20% APR over 12 months, for example, would cost roughly $110 in total interest. The rate you’re offered depends on factors like the merchant’s arrangement with Affirm, your credit profile, and the loan amount. You’ll always see the exact interest cost before you agree to the plan.
Affirm charges no fees of any kind. There are no late fees, no prepayment penalties, and no origination fees. If you want to pay off your balance early, you can do so without any extra cost, and you’ll save on whatever interest remains. The no-late-fee policy is notable: if you miss a payment, Affirm won’t charge you a penalty, though it may pause your ability to make new purchases until you’re caught up.
How Affirm Affects Your Credit
The initial approval uses a soft credit inquiry, so applying won’t ding your credit score. However, Affirm reports all pay-over-time transactions to Experian and TransUnion, two of the three major credit bureaus. That means your payment history with Affirm can affect your credit score in both directions. Consistent on-time payments could help build your credit profile, while missed payments could hurt it.
This is worth keeping in mind if you’re managing multiple Affirm loans or other debt. Each active loan shows up as an open account on your credit report, and the balances factor into how lenders view your overall debt load.
Refunds and Returns
If you need to return something you bought with Affirm, start by contacting the retailer directly. Affirm can’t process refunds on its own, since the return has to be approved by the store according to its own return policy. Once the retailer issues the refund, Affirm receives it and applies the amount to your remaining balance, starting with your final scheduled payments.
While you’re waiting for the refund to process, you’re still responsible for any payments that come due. Keep making payments on schedule to avoid falling behind. If the refund covers your entire remaining balance, Affirm closes the loan. If you’ve already paid more than the refund amount (because of interest or payments already made), you may receive the difference back to your original payment method. You can track the status of any refund inside your Affirm account under the purchase details.
Who Affirm Works Best For
The interest-free short-term plans (Pay in 2, Pay in 4, Pay in 30) are straightforward tools for spreading out a purchase without any added cost, as long as you’re confident you can make the payments on time. They work well for planned purchases where you’d rather not put the full amount on a credit card or pull it from savings all at once.
The monthly installment plans make more sense for larger purchases, but the value depends entirely on the interest rate you’re offered. A 0% APR plan is effectively free financing. A plan at 25% or 36% APR, on the other hand, can add significant cost, and you may be better off using a credit card with a lower rate or a 0% introductory APR offer. Affirm always shows you the math before you commit, so compare the total repayment amount to your alternatives before choosing a plan.