Klarna's First-Mover Merchant Advantage
Former Klarna merchant partner on why retailers sign up with Klarna
The key advantage is not just better checkout math, it is becoming the BNPL brand shoppers already recognize before they reach checkout. When Klarna lands early with large fashion chains like ASOS and H&M, shoppers see the same pink button across multiple stores, which lowers trust friction and makes the installment option feel normal. That makes conversion easier to attribute because merchants can compare baskets shown Klarna versus baskets that were not, and track repeat purchase behavior after adoption.
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In practice, merchants measure this with straightforward before and after slices. Large apparel sellers look at total bag conversion, repeat purchases, and whether more items sell at full price before markdown. Higher priced specialty retailers can go narrower and test at the SKU level.
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The first mover piece matters because BNPL is partly a distribution business. Klarna reported adding 60,000 merchants in 2019, including H&M, and said merchants used it to improve acquisition, average order value, conversion, and retention. ASOS expanded an existing UK Klarna relationship into the US in 2019.
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This is why merchant fees can hold up early. If a retailer believes Klarna lifts conversion by around 20%, the added gross profit can outweigh the fee. But once multiple BNPL buttons become common, that advantage shifts from unique conversion lift to price competition and brand strength at checkout.
The market is heading toward a fight over default mindshare, not just installment lending. The winners will be the providers that show up across the most important merchants, pull shoppers back through their own app or network, and turn a checkout button into a repeat shopping habit that merchants keep paying for.