Afterpay and Klarna are the two dominant buy now, pay later (BNPL) platforms. Both let customers split purchases into installments while merchants get paid upfront. The trade-off? Merchant fees that are significantly higher than traditional payment processors. Understanding the cost difference between these two can help you choose the right BNPL partner — or decide if BNPL is worth offering at all.
Merchant Fee Comparison
Afterpay charges merchants 4-6% + $0.30 per transaction, with the exact rate depending on your industry, volume, and negotiation. A typical rate is around 6% + $0.30. Klarna charges 3.29-5.99% + $0.30, with rates varying by plan and product type. On a $100 purchase, Afterpay takes roughly $6.30 and Klarna takes approximately $5.59-$6.29. Klarna's lower-end rates can be meaningfully cheaper, but both are 2-3x more expensive than standard credit card processing.
How Merchants Get Paid
Both Afterpay and Klarna pay merchants upfront for the full purchase amount (minus fees). The BNPL provider assumes the credit risk — if a customer defaults on their installments, that's Afterpay's or Klarna's problem, not yours. This guaranteed payment is a key advantage over extending credit yourself.
Conversion Impact
BNPL providers claim that offering installment payments increases average order value (AOV) by 20-40% and improves conversion rates. The logic is simple: a $200 product feels more affordable as "4 payments of $50." Both Afterpay and Klarna have large user bases — Afterpay has 20+ million active users and Klarna has 150+ million globally. Offering BNPL puts your store in front of customers who actively shop through these platforms' apps.
Afterpay vs Klarna: Key Differences
Afterpay (owned by Square/Block) focuses primarily on the "pay in 4" model and has a strong presence in fashion and beauty retail. Klarna offers more flexibility with pay-in-4, pay-in-30-days, and longer-term financing options. Klarna also has a larger global footprint, operating in 45+ countries vs Afterpay's presence in the US, Australia, Canada, and the UK. If your customers are international, Klarna's reach is a clear advantage.