Using a pay-over-time service can affect your credit score in either direction. Whether it helps, hurts, or does nothing depends on three things: the type of product you’re using, whether the provider reports your activity to the credit bureaus, and whether you pay on schedule. Payment history alone drives 35% of a FICO score,1myFICO. Whats in Your Credit Score – Section: How Scores Are Calculated so a single missed installment reported to a bureau can do real damage, while consistent on-time payments on a reported account can slowly build your file.
The Two Kinds of Pay-Over-Time Products Behave Differently
Credit card installment features, offered by issuers like American Express (Plan It) and Chase (My Chase Plan), let you convert a purchase already on your card into fixed monthly payments. The balance stays on the card account, so it keeps counting toward your revolving credit utilization. Convert a large purchase on a card with a modest limit and your utilization can spike even though you have a structured repayment plan behind the scenes.
Standalone buy-now-pay-later services such as Affirm, Klarna, and Afterpay work differently. Each purchase creates a separate installment loan with a fixed end date and set number of payments. Scoring models treat that as installment debt rather than revolving credit, so it shows up as total debt owed rather than as a hit to a credit limit. Knowing which category your product falls into is the first step in predicting how your score will respond.
The Small Hit at Sign-Up
When you check eligibility, most providers run a soft inquiry, which is invisible to other lenders and has no effect on your score. When you formally accept a loan, the provider often runs a hard inquiry. FICO reports that a hard inquiry typically lowers a score by fewer than five points.2myFICO. Does Checking Your Credit Score Lower It The inquiry stays on your report for up to two years but only factors into your score for 12 months.3Experian. How Many Points Does an Inquiry Drop Your Credit Score Several applications in a short window compound the small reductions and can look like financial stress to lenders.
Whether Your Payments Even Show Up
Payment history is 35% of a FICO score,1myFICO. Whats in Your Credit Score – Section: How Scores Are Calculated but only if the provider actually shares your data with Equifax, Experian, or TransUnion. Historically, many standalone BNPL providers reported only when an account became severely delinquent. A clean payment record did nothing for your score, but a missed payment could still hurt it.
That is changing. Affirm began sharing loan data with Experian in early 2025, and Klarna started reporting U.S. customer activity to TransUnion in 2024. Other providers, including Afterpay, are expected to expand reporting. Credit card installment plans have always been visible, because activity flows through your existing card account.
If your provider still does not report positive payments, the arrangement offers no credit-building benefit and only downside risk.
When a Late Payment Actually Hits Your Report
A payment is not reported as late until it is at least 30 days past due.4Experian. Can One 30-Day Late Payment Hurt Your Credit – Section: When Is a Payment Considered Late Missing the due date by a few days may trigger a late fee, but it won’t show up on your credit file. Once payment crosses 30 days, the lender can report it, and the delinquency stays on your report for seven years from the date it first went unpaid.5Federal Trade Commission. Consumer Reports: What Information Furnishers Need to Know – Section: Delinquent Accounts
If the account stays unpaid for 60 to 90 days, the provider may send it to collections. A collection record can drop a score by 50 to 100 points or more, depending on where the score started and the rest of the profile, and that record can also stay visible for seven years.
What It Does to Your Credit Utilization
How much you owe relative to your available credit limits makes up 30% of a FICO score,1myFICO. Whats in Your Credit Score – Section: How Scores Are Calculated and it applies mainly to revolving accounts like credit cards. This is where credit card installment plans get tricky. Convert a $2,000 purchase into monthly payments on a card with a $5,000 limit, and your utilization on that card jumps to 40%, even though you have a payment plan in place. General guidance is to keep utilization below 30%, and lower is better.
Standalone BNPL loans function as installment debt with a fixed end date, so they do not feed into your utilization ratio the same way. They still add to your total debt load, which scoring models weigh, but a BNPL loan will usually move your score less than a comparable spike in card utilization would.
Account Age and Credit Mix
Length of credit history is 15% of a FICO score and looks at the average age of all your accounts, open and closed.1myFICO. Whats in Your Credit Score – Section: How Scores Are Calculated Every new pay-over-time account you open pulls that average down. If you have a long-established file, one BNPL account barely registers. If your file is young and you open several short-term installment loans in quick succession, the average age can drop noticeably.
Credit mix accounts for the remaining 10%.1myFICO. Whats in Your Credit Score – Section: How Scores Are Calculated If your file is nothing but credit cards, adding an installment loan can give this category a modest boost. Opening accounts you don’t need just to diversify your mix is rarely worth the extra inquiry and the shorter average age it creates.
FICO’s New BNPL Scoring Model
FICO announced a scoring model, FICO Score 10 BNPL, that factors buy-now-pay-later payment history directly into scores. It was expected to become available in the fall of 2025.6FICO. FICO Unveils Groundbreaking Credit Scores That Incorporate Buy Now Pay Later Data Until now, BNPL activity was largely invisible to scoring formulas even when providers reported it, because the data did not fit traditional categories.
For consumers who pay BNPL installments on time, the change could produce a meaningful score boost, especially for people with thin files. For those who have missed BNPL payments, the same data could pull scores down. Rollout depends on lenders adopting the new model, which typically happens gradually.
What Lenders See When You Apply for a Mortgage
Even when BNPL debts do not appear on your report, they can still affect a mortgage application. Because reporting has been inconsistent, mortgage lenders may not see the full picture of your monthly obligations when calculating your debt-to-income ratio. Some lenders now ask borrowers directly about active BNPL loans during the application.
For FHA-insured loans, installment debts that will be paid off within 10 months and represent less than 5% of the borrower’s gross monthly income can be excluded from DTI calculations. Other BNPL obligations are expected to be counted. If you’re planning to apply for a mortgage, paying down or clearing BNPL balances beforehand can strengthen your application.
Returns, Refunds, and Disputes
Returning something you bought through a BNPL provider does not automatically stop your payment schedule. Refunds depend on the merchant processing the return and the provider crediting your account, which can take days or weeks. During that gap, installments may still come due, and a missed payment can still generate a late fee or a flag on the account.
Credit card installment plans carry stronger protections. Under federal law, credit card issuers must acknowledge billing disputes within 30 days and resolve them within two complete billing cycles, no more than 90 days, and cannot require you to pay the disputed amount while the investigation is open.7Consumer Financial Protection Bureau. Regulation 1026.13 Billing Error Resolution Standalone BNPL loans do not currently carry those same federal dispute rights, so read the provider’s refund policy before you buy.
Fixing Errors the Provider Reports
If a pay-over-time provider reports something inaccurate, such as a payment marked late that you actually made on time, you can dispute it with each bureau that shows the error. There is no deadline for filing a dispute. Once a bureau receives it, the bureau has 30 days to investigate and respond. You can file online, by phone, or by mail. If you mail a dispute, use certified mail, include copies of supporting documents like payment confirmations or bank statements, and keep your own copies of everything you send.8Federal Trade Commission. Disputing Errors on Your Credit Reports