Klarna Files For London IPO At $18bn Target In Test Of European Fintech Appetite

Klarna has filed registration documents with the UK's Financial Conduct Authority for an initial public offering targeting an $18 billion equity-raise valuation, in a London listing decision that lands as a significant test of whether the UK's recent listing-rule reforms have meaningfully changed the calculus for high-profile European fintech issuers.

The Swedish buy-now-pay-later operator has worked through three different IPO scenarios over the past four years — a 2021 New York filing that was withdrawn during the rate-hike cycle, a 2023 reset that paused, and a 2025 round of confidential conversations across multiple venues. The decision to list in London is the result, founder Sebastian Siemiatkowski wrote in a letter accompanying the filing, of 'a process that genuinely considered NYSE and Nasdaq alongside London' and concluded that London now offers the more attractive structural fit.

The reform context is non-trivial. The FCA's revised listing-rules regime, which came into force in mid-2024, narrowed the gap between premium and standard listings, simplified disclosure for sponsor-led transactions, and expanded the regime around dual-class share structures. Together with the Mansion House and capital-markets reform packages, the cumulative effect is a London market that several previous would-be issuers had quietly dismissed as no longer competitive but that now reads differently to issuers re-examining the venue choice.

The financial profile Klarna is presenting is also more disciplined than at the time of the 2021 attempt. The company is profitable on an adjusted-operating-income basis through fiscal 2025, has reduced credit-loss intensity meaningfully through the integration of its real-time underwriting stack, and has substantially diversified the geographic mix away from the original Nordic-and-Germany core. The US business has compounded particularly fast, and is now the company's largest single market by revenue.

For the wider European fintech sector, the more important reading is on signal value. If Klarna lands a successful London listing at or near its target, the queue of subsequent candidates — Wise's secondary, Revolut's long-trailed listing decision, and several mid-cap European payments names — gets meaningfully easier. If it stumbles, the narrative around European listings reasserts itself. Either outcome will frame the next twelve months of capital-markets activity for the sector.