Buy now, pay later compared: Klarna vs Afterpay vs Affirm vs PayPal Pay in 4

Buy now, pay later is now a standard button at the checkout, and the holidays are when it gets used most. LendingTree's tracker found a record 48% of Americans were at least considering it in December 2025. Splitting a $200 order into four payments of $50 sounds simple. But the four big providers don't treat a missed payment the same way, and only some of them tell the credit bureaus about it.

We've compared Klarna, Afterpay, Affirm and PayPal Pay in 4, using their own US websites and help pages as we found them on October 27, 2026. Terms can change and can depend on the store and your state, so check the plan details at checkout before you agree.

At a glance

• No late fees: PayPal Pay in 4 and Affirm. PayPal says Pay in 4 has no late fees, and Affirm says it never charges late fees.
• Late fees: Klarna charges up to $7 and Afterpay up to $8 for each missed payment, capped at 25% of the order value.
• Interest on Pay in 4: none at any of the four, as long as you pay on time.
• Longer plans: up to 35.99% APR at Klarna and PayPal, and up to 36% at Affirm.
• Credit reporting: Affirm reports Pay in 4 to Experian and TransUnion. Klarna reports only its longer monthly loans. Afterpay says it doesn't report in the US.

Buy now, pay later compared

Klarna

Klarna's Pay in 4 splits a purchase into four payments, the first at checkout and the rest every two weeks. It's interest-free and fee-free if you pay on time. Klarna does a soft credit check, which doesn't affect your score. If you miss a payment, the late fee is up to $7, and Klarna says total late fees will never be more than 25% of the order value at the time of purchase.

For bigger purchases, Klarna's financing option charges 0% to 35.99% APR, depending on your credit and the length of the plan. Klarna says it shares these monthly loans and their repayments, including late payments and defaults, with TransUnion and Experian. It doesn't share Pay in 4, Pay in 30 or Pay in full. Klarna also says that, for now, the data it shares won't affect your score.

Afterpay

Afterpay, which is part of Cash App, is free if you pay on time at stores it partners with. Miss a payment and it can charge up to $8 for each missed payment, with total late fees on an order capped at 25% of the order value. Afterpay says it may do a soft credit check when you first sign up.

There's one catch to know about. If you use Afterpay at a store it doesn't partner with, for example through a single-use card or for gift cards in the app, a finance fee can apply. Afterpay's own example shows a 36% APR. For orders over $100, Afterpay's Pay Monthly spreads the cost over 3, 6, 12 or 24 months with simple interest, and needs a credit check.

Afterpay says it doesn't currently report to credit bureaus in the US. So on-time payments won't help your credit.

Affirm

Affirm's Pay in 4 is 0% APR, and its monthly plans charge 0% to 36% APR depending on your credit, sometimes with a down payment. What stands out is that Affirm says it never charges late fees. The trade-off is credit reporting. Affirm reports all payment activity, on time, late or missed, to Experian, and plans started from May 1, 2025, including Pay in 4, also go to TransUnion. Paying on time can build a record; a missed payment will show.

PayPal Pay in 4

PayPal's Pay in 4 covers purchases from $10 to $2,000, split into four payments every two weeks. PayPal says it's always interest-free, with no late fees or sign-up fees, and the soft check won't affect your credit score.

For larger items, PayPal Pay Monthly covers purchases from $49 to $10,000 over 3, 6, 12 or 24 months, at a fixed APR of 0% to 35.99% subject to approval. It also has no late fees, but PayPal warns that missed payments may affect your credit score.

Does it affect your credit score?

It's changing. FICO announced in June 2025 that its new FICO Score 10 BNPL scores would count buy now, pay later loans, but lenders are adopting new scores gradually and most still use older versions that don't. For now, the surest rule is that Affirm reports everything, Klarna reports only its longer loans, and Afterpay says it doesn't report at all.

The Federal Reserve's 2026 survey of household finances found that 53% of buy now, pay later users wrongly thought on-time payments would help their credit score. That's only true if the provider reports, and the score a lender uses counts it.

What the rules say

There's no special federal rule for buy now, pay later loans. In 2024 the Consumer Financial Protection Bureau said pay-in-4 lenders should follow some credit card protections, such as handling disputes and refunds. It withdrew that guidance on May 12, 2025, and told a court it wouldn't reissue it. You can still dispute a problem with the provider, and if you paid with a credit card you may have credit card dispute rights on those payments.

New York has passed a law to license buy now, pay later lenders. Its Department of Financial Services proposed rules in February 2026 to limit late fees, ban excessive fees and set standards for disputes. When we checked on October 27, 2026, the rules were still proposed, and they take effect 180 days after they're adopted, so they won't apply this holiday season.

How people get caught out

The Fed's survey found that 16% of adults used buy now, pay later in 2025, and slightly more than a quarter of them paid late. LendingTree's 2026 survey put it higher, at 47%. About 11% of users had a payment set off an overdraft or bank fee. That's the hidden cost: payments are taken automatically from your bank account or debit card, so a payment due before payday can cost you a bank fee even if the provider doesn't charge one.

Tips before you split a payment

1. Add up all your plans. Four $50 payments sound small, but three plans at once means $150 leaving your account every two weeks.
2. Pay with a card that won't overdraw. If you can, link a credit card instead of a debit card, as long as you'll pay the card off in full.
3. Check the payment dates. Most providers let you change the date or pay early in their app, though Sezzle can charge to reschedule.
4. Know how returns work. If you return an item, keep paying until the store processes the refund, then check the plan is adjusted or canceled.
5. Avoid the longer plans unless they're 0%. At 35.99% APR, a monthly plan can cost more than a credit card.

Your questions answered

Will applying hurt my credit score?

Klarna, Afterpay and PayPal all say they use a soft check for Pay in 4, which doesn't affect your score. Longer plans can need a fuller credit check, so read the terms before you apply.

What about Zip and Sezzle?

Both work in a similar way but can charge more. Zip's terms allow an installment fee and a late fee of up to $7. Sezzle's fee schedule allows a late fee of up to $16.95, capped at 25% of the order, and up to $7.50 to reschedule a payment.

Ways to save

Buy now, pay later spreads the cost but doesn't cut it. Check a store's promo codes before you split a payment, so the plan is for a lower total. You'll find live US deals on our stores pages.

Sources: Klarna: Pay in 4, Klarna: does Klarna report to credit bureaus?, Afterpay: is there a cost to using Afterpay?, Afterpay: credit checks, Affirm: how it works, Affirm: credit reporting with TransUnion, Affirm: Sam's Club announcement, PayPal: buy now, pay later, Zip: terms, Sezzle: fees, CFPB: buy now, pay later, New York DFS: proposed BNPL rules, FICO: BNPL scores, Federal Reserve: Economic Well-Being of U.S. Households in 2025, LendingTree: BNPL statistics