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Stripe Guides

Adding Klarna and Afterpay to Stripe Checkout: What Actually Changes

Buy-now-pay-later isn't a UI toggle. It changes your refund logic, your risk exposure, and what "payment confirmed" means.

Z

Zeeshan

Founder · Published Feb 16, 2026

Enabling Klarna or Afterpay in Stripe Checkout is genuinely a one-line change to your allowed payment methods. Stripe handles the BNPL provider relationship, the installment schedule, and the underwriting decision. What isn't a one-line change is how your existing refund and fulfillment logic needs to adapt once a portion of your orders are financed rather than paid outright.

Where BNPL Diverges From a Standard Card Charge

  • You're paid in full by Stripe/the BNPL provider upfront: the customer's installment schedule is between them and the provider, not something your app needs to track
  • Refunds on a BNPL order route back through the provider's own process, which can take longer than a standard card refund
  • Both Klarna and Afterpay have their own eligibility rules (order value ranges, geographic availability) that Stripe surfaces but doesn't let you override
  • Partial refunds on BNPL orders need explicit testing: the interaction between a partial refund and an active installment plan is a common edge case

The integration work is small; the QA work is where we spend the actual time: specifically around partial refunds, order cancellations after the BNPL provider has already approved financing, and making sure your fulfillment logic doesn't wait on a customer's installment schedule when it should already be treating the order as fully paid.

#checkout#payment-methods

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  • Where BNPL Diverges From a Standard Card Charge

Related Services

Klarna

Klarna BNPL via Stripe: full risk handled by Klarna.

Learn more

Afterpay

Afterpay via Stripe: installment checkout, zero credit risk to you.

Learn more

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