Joshua Franklin Wiedeman

Buy Now, Pay Later

Buy Now, Pay Later (BNPL) lets customers split a purchase into smaller payments, often four interest-free installments, while getting the product right away. Providers such as Klarna, Afterpay, Affirm, and Shop Pay Installments pay the merchant upfront and collect from the customer over time. For the merchant, the price shown at the moment of decision drops from “$200 today” to “$50 today.”

How it works

People weigh money spent today more heavily than money spent later. A $200 item can feel out of reach while “$50 now, then $50 every two weeks” feels manageable. The total is the same. BNPL tends to matter most for mid-priced items: high enough that buyers hesitate, but not so high that they want formal financing.

How to do it

  1. Compare providers on merchant fees, supported price ranges, markets, and integration effort. Check whether your platform has a native option.
  2. Show the installment price on product pages next to the full price, not only at checkout. Example: “or 4 interest-free payments of $50.”
  3. Repeat the installment message in the cart, on the pricing page, and in abandoned cart emails.
  4. Track returns for BNPL orders separately from full-pay orders.
  5. A/B test message wording, such as “4 interest-free payments of $X” versus “Pay $X today.”
  6. Set a minimum order value for BNPL so tiny installments do not clutter checkout.

What to measure

  • BNPL adoption rate: BNPL orders divided by total orders.
  • Conversion rate lift: checkout conversion after launch compared with a holdout group or the prior period.
  • AOV of BNPL orders: average order value of BNPL orders compared with full-pay orders.

Best practices

  • State “interest-free” and “no fees” clearly, if true. Many buyers link installments with credit card debt.
  • Use installment pricing in ads for higher-priced products, where the full price might stop a click. Follow each ad platform’s financial disclosure rules.
  • Favor higher-margin products, since the merchant fee comes out of margin.

Common pitfalls

  • Ignoring the fee. Model conversion gains against merchant fees and any extra returns before rolling out widely.
  • Offering BNPL on very cheap items. “$2.50 x 4” adds clutter and little lift.
  • Forgetting that the provider’s experience is your experience. Declines and payment reminders reflect on your brand. Monitor complaints about the payment process.