Buy now, pay later, abbreviated BNPL, is a point-of-sale financing option that lets a shopper receive goods immediately and pay for them later, either in a small number of installments or in one deferred payment, often without interest when payments are made on time. In checkout & payments, BNPL appears as a separate payment method next to cards and digital wallets, and the merchant is paid upfront by the BNPL provider.
BNPL is a form of short-term consumer credit, even when it is marketed as a payment method. The provider assesses the shopper, takes on the credit and fraud risk, and earns most of its revenue from a merchant fee rather than from interest charged to the consumer. Klarna is one of the best-known providers, and several card networks and wallets offer their own installment features.
How buy now, pay later works at checkout
BNPL works as a three-party arrangement between the shopper, the merchant and the BNPL provider. The flow is designed to take only seconds so that it does not slow down the checkout.
- The shopper selects BNPL as the payment method in the checkout or on a product page.
- The provider runs an instant risk assessment, usually a soft credit check plus fraud and behavioral signals.
- If approved, the shopper agrees to the repayment schedule and often pays the first installment immediately.
- The provider pays the merchant the order value minus its fee, typically within a few days.
- The shopper repays the provider according to the schedule, usually by automatic card or bank debit.
- Returns and refunds are reflected in the remaining installments or refunded by the provider.
Because the merchant is paid upfront, the default risk sits with the provider, not with the store. This is the key difference from a merchant offering its own invoice or layaway arrangement, where the merchant waits for the money and carries the risk.
Common BNPL products
BNPL covers several repayment structures that differ in duration, cost and the type of purchase they suit. The table summarizes the main formats.
| Format | Typical schedule | Cost to shopper | Typical order size |
|---|---|---|---|
| Pay in four | Four payments over about six weeks | Usually interest-free | Small to medium |
| Pay in 30 days | One payment after delivery | Usually interest-free | Fashion, try-before-buying |
| Monthly installments | Roughly 3 to 36 months | Interest-free or with interest | Electronics, furniture |
| Card-linked installments | Split an existing card purchase | Fee or interest per plan | Any card purchase |
Interest-free formats are funded mainly by merchant fees, while longer plans often carry an annual percentage rate for the shopper or a subsidized promotional rate paid for by the merchant. Late fees, where allowed, add another revenue source and are a major consumer-protection concern.
BNPL compared with other payment options
BNPL competes with credit cards, debit cards and traditional installment loans. The comparison explains why merchants offer it and why regulators now treat it as credit.
| Method | Who extends credit | Typical consumer cost | Merchant cost |
|---|---|---|---|
| BNPL | BNPL provider | Often none if paid on time | Higher than card fees |
| Credit card | Card issuer | Interest on revolving balance | Interchange and scheme fees |
| Debit card | No credit | None | Usually lowest card fees |
| Point-of-sale loan | Bank or lender | Interest, formal agreement | Varies by program |
| Merchant invoice | Merchant itself | None | Merchant carries risk |
Merchant fees for BNPL are commonly several percent of the order value, depending on the provider, the format and the merchant’s volume, which is usually more than standard card acceptance. Merchants accept this because BNPL can raise conversion and average order value, although the size of that effect varies widely by category and audience.
Regulation and consumer protection
BNPL regulation is tightening in many markets because early interest-free products often fell outside consumer credit rules. The main concerns are affordability checks, clear disclosure, late fees and the visibility of BNPL debt to other lenders.
- In the European Union, the revised Consumer Credit Directive brings most BNPL products into scope, with creditworthiness assessments and information duties.
- In the United Kingdom, legislation brings deferred payment credit under financial conduct regulation.
- In the United States, rules and supervision differ by agency and state, and the federal approach has changed over time.
- Strong customer authentication under PSD2 applies to the payments that fund repayments in Europe.
For merchants, the practical consequence is that BNPL providers may run stricter checks and show more disclosures, which can slightly increase checkout friction. Merchants also remain responsible for accurate marketing, for example not presenting BNPL as free money or hiding fee conditions.
Implementation choices and risks for merchants
Adding BNPL is usually technically simple through a payment gateway or a plugin, but the business decisions require more care. The table pairs common decisions with recommended practice.
| Decision | Recommended practice | Reason |
|---|---|---|
| Where to show BNPL | Product page and checkout | Installment price influences early decisions |
| Minimum order value | Set it to match provider rules | Avoids rejected small orders |
| Product categories | Exclude regulated or digital goods if required | Provider terms often restrict them |
| Returns process | Synchronize refunds with the provider | Prevents charging shoppers for returned items |
| Measurement | Compare cohorts with and without BNPL | Separates real uplift from substitution |
A frequent mistake is to attribute all BNPL orders to BNPL, although many of those shoppers would have paid by card anyway. Another risk is higher return rates in categories where pay-later formats encourage ordering several sizes.
In simple terms
Buy now, pay later means taking the item home today and splitting the price into smaller payments. A pair of shoes costing 120 dollars might be paid as four payments of 30 dollars over six weeks.
A specialized company pays the shop right away and then collects the payments from the shopper. It is convenient, but it is still a loan that must be repaid, and missed payments can bring fees and affect a person’s credit.
A practical example
An online furniture store with an average order value of about 450 euros adds BNPL through its payment gateway. Shoppers can choose pay in 30 days or monthly installments over 12 months, and the product pages show the monthly amount under the price.
The store runs the change as an experiment for eight weeks and compares it with the previous period and a holdout group. It finds that a meaningful share of buyers choose installments for sofas and beds, and that orders above 1,000 euros become more frequent. After deducting the higher merchant fees, the store keeps BNPL for large items and sets a minimum order value so that small accessories continue to be paid mainly by card.