Klarna: What It Is and How Its Buy Now, Pay Later Service Works

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Key Facts

Type

Buy now, pay later

Founded

2005

Headquarters

Stockholm, Sweden

Ticker

KLAR (NYSE, since 2025)

Website

klarna.com

Klarna is a Swedish fintech company that runs a buy now, pay later (BNPL) service. Shoppers use it to split a purchase into smaller payments or delay paying for it, both online and in physical stores. Its standard plans let you pay in four interest-free installments due every two weeks, or pay the full amount within 30 days. For larger purchases, longer-term financing is available through a partner bank, WebBank. Klarna earns most of its revenue from the merchants that accept it, not from interest charged to shoppers. That is why its basic plans can be free, as long as you pay on time. Used for purchases you could pay for anyway, it is a no-interest way to spread a cost over a few weeks. The costs show up when you shop outside partner stores, miss payments or let several plans overlap, and used to stretch a budget, it carries the same risks as any other credit.

What Is Klarna?

Klarna started in Stockholm in 2005 and still has its headquarters there. It built its business on a simple idea: give shoppers more time to pay at checkout, and charge the store for the privilege. The company calls itself the global leader in the generational shift away from credit cards, positioning itself as an alternative to revolving card debt.

By its own count, Klarna works with more than 500,000 merchants and serves about 150 million consumers worldwide, roughly 34 million of them in the United States. It has said those customers make more than two million transactions a day. It employs around 5,000 people, whom it calls “Klarnauts.” Investors have included Sequoia Capital and Visa. In 2025 the company listed on the NYSE as KLAR.

Klarna’s North American headquarters has been in Columbus, Ohio, since 2014, with other U.S. offices in cities such as New York and Los Angeles. Its retail partners span fashion, beauty, electronics, home goods, auto and more. Brands named among them include Nike, Etsy, Wayfair, Converse, Anthropologie, Petco, Instacart, LensCrafters, Harley-Davidson and Versace.

The company has not always been profitable. Its 2022 annual report showed revenue of 13.3 billion Swedish krona and a net loss of 10.4 billion krona. In his shareholder letter that year, CEO and co-founder Sebastian Siemiatkowski pointed to progress toward profitability, lower credit losses and costs, and 22% year-over-year growth in gross merchandise volume (GMV, the total value of goods sold through Klarna).

How Klarna Works

You must be at least 18 to use Klarna. You can meet it in two ways: as a payment option at a participating retailer’s checkout, or through the Klarna app, available on the App Store and Google Play. Signing up is free, and Klarna does not run a credit check when you create an account.

The credit decision happens at the point of purchase. Each time you try to buy something, Klarna approves or declines that specific transaction. It may run a soft credit check at that point, which does not affect your credit score.

Pay in 4

Pay in 4 is Klarna’s best-known plan. It splits the purchase price into four equal payments charged every two weeks. Klarna charges no interest and no fees on this plan at participating retailers, provided you pay on schedule.

Hypothetical example: a $200 jacket bought with Pay in 4 becomes four payments of $50, spaced two weeks apart. If each payment goes through on time, the total cost is $200, the same as paying upfront.

Pay in 30 Days

With this option, you receive the item and pay the full amount within 30 days. It works like a short, interest-free grace period. Some shoppers use it to see whether an item fits or works before paying for it.

Longer-Term Financing

For bigger purchases, Klarna offers financing over a longer period through WebBank, its partner bank. This is a different product from the short-term plans: a financing agreement with its own terms, and a longer schedule can come with costs, including interest, that Pay in 4 does not have.

Shopping Outside Klarna’s Partner Stores

You are not limited to stores that have signed up with Klarna. The app lets you shop at other retailers too, for a service fee of $2 per purchase. On small orders, a flat fee like that adds up fast in percentage terms: $2 on a $40 purchase is 5% of the price.

Fees and Late Payments

Missing a Klarna payment has consequences on three fronts: fees, collections and your credit file.

Under Klarna’s Pay in 4 agreement, a payment that is still unpaid 10 days after its due date can trigger a late fee of $7. Klarna caps the total late fees on any one order at 25% of the total purchase amount.

Fees and terms can change, so the agreement presented at checkout is the version that applies to your order. That includes the late fee, the $2 service fee for shopping outside partner stores, and the cost and repayment schedule of WebBank financing, which is set in its own terms.

Hypothetical example: on the $200 jacket above, the 25% cap means late fees on that order could never total more than $50. On a $28 purchase, the cap is $7, so a single late fee would already hit the ceiling for that order.

If you default, Klarna can send the account to a collection agency and report the default to the credit bureaus. That reporting damages your credit score and can affect future applications for loans, cards or apartments.

How Klarna Makes Money

If shoppers on the standard plans pay no interest, the money has to come from somewhere. It comes mainly from merchants. Retailers that accept Klarna reportedly pay a flat fee per transaction plus a percentage of the purchase. The rate varies by country and by which Klarna option the shopper picks.

In 2022 the National Retail Federation estimated that U.S. merchants pay about 5% in total costs to accept Klarna or its rival Afterpay. That is roughly twice what they typically pay in card swipe fees.

Why would a store pay more? Because Klarna promises to turn more browsers into buyers. Across e-commerce, about 70% of online shopping carts are abandoned before checkout, often because shoppers don’t want to create an account or find the checkout process too complicated. BNPL services aim to remove that friction. Klarna also tells merchants that offering its service leads to a 41% increase in average order value.

What Credit Score Do You Need for Klarna?

Klarna does not publish a minimum credit score. When it performs a credit check, it may pull information from TransUnion. According to the company, it uses the details you provide to verify your identity and reviews your credit report to understand your financial behavior and assess creditworthiness.

Because each purchase is evaluated separately, approval is not a one-time event. You might be approved for a $60 order and declined for a $900 one on the same day.

What Is the Maximum Spending Limit on Klarna?

Klarna does not give users a fixed credit limit. Instead, what you can spend can change with every transaction. The factors Klarna considers include:

• your current outstanding balance with Klarna
• your payment history
• the payment option you choose
• the retailer you are buying from

The Klarna app displays an estimated “Purchase Power,” which is the closest thing to a limit, though it is an estimate rather than a guaranteed amount.

Klarna says it may decline a purchase if you already carry a large balance or if the order is for a large amount. Linking your bank account to Klarna can lower the chance of a decline, since it gives the company more information about your ability to pay.

Downsides and Risks

Klarna’s convenience comes with trade-offs that are easy to miss when the checkout button says “4 payments of $25.”

Overspending. The biggest criticism of BNPL services is that they make it easier to spend more than you can afford. Klarna’s own claim that it raises average order value by 41% shows the effect works in practice for merchants. Breaking a price into installments makes it feel smaller, and the plans are easy to approve.

Stacking plans. Because each purchase is a separate plan with its own schedule, several Pay in 4 orders running at once can create a cluster of payments due within the same few weeks. Each one looks small; together they can strain a budget. Klarna factors your outstanding balance into approvals, which may stop some stacking, but it does not track your obligations with other BNPL providers or your other bills.

Higher prices for everyone. Merchants pay more to accept Klarna than to accept cards. Some of that cost may be passed on to all shoppers through higher prices, whether or not they use BNPL.

Who uses it. In a March 2023 report, the Consumer Financial Protection Bureau found that BNPL users were much more likely than non-users to be highly indebted, to revolve credit card balances, to have delinquencies on traditional credit, and to use high-cost services such as payday loans, pawn loans and overdrafts. The CFPB added an important qualification: those signs of financial stress were already visible before BNPL became widespread in 2019. Whether BNPL helps consumers in distress or makes their situation worse remained an open question for future research.

Klarna’s position, as a spokesperson told The Guardian in 2018, is that it has safeguards meant to offer its products only to people who can afford them and repay sustainably.

Strengths

Weighed against those risks, Klarna has real advantages when used deliberately:

• No interest on standard plans. Pay in 4 and Pay in 30 days cost nothing extra if you pay on schedule.
• Free to join, no hard credit pull. Signing up involves no credit check, and purchase-time checks are soft.
• Wide acceptance. Hundreds of thousands of merchants accept it, and the app extends it to other stores for a fee.
• Capped late fees. Late fees on an order cannot exceed 25% of the purchase, though the cap does not limit the credit damage from a default.

How we checked Klarna

We visited klarna.com on 13 November 2026, connecting from Tallinn, Estonia, and the address sent us to Klarna’s international site. Near the bottom of the homepage sits a notice titled “Merger of Sofort GmbH into Klarna Bank AB: GDPR Notification.” Clicking “Klarna” in the footer took us to the About page. Its small print carries the US disclosures: monthly financing “issued by WebBank,” NMLS #1353190, and deposits in the Personal account “held at WebBank, Member FDIC.” The same page is blunt. “Klarna is not an FDIC-insured bank and deposit insurance only covers the failure of WebBank.” It also notes that Klarna Group plc listed on the New York Stock Exchange in September 2025 as KLAR. We opened the Terms and Conditions page as well.

Prices were harder to pin down. None of the pages we opened showed a fee table, so we could not match the $2 service fee or the $7 late fee described above against Klarna’s own wording. We never reached a checkout, which means we can’t say whether one requires an account first. No risk warning appeared on the pages we read. Klarna’s governance page names Klarna Group plc (CRN 14467769), incorporated in England and Wales with its registered office at 10 York Road, London, SE1 7ND, and its subsidiary Klarna Bank AB, incorporated in Sweden with registration number 556737-0431.

The FDIC BankFind Suite, searched on 13 November 2026, confirmed WebBank as an insured bank, cert 34404, insured since 05/15/1997. A second search, by web address for klarna.com, did not return Klarna. That matches what Klarna says about itself: it relies on a partner bank and holds no FDIC charter of its own.

On Trustpilot, read the same day, Klarna scored 4.5/5 from 630,099 reviews, with 77% five-star and 14% one-star. The company had replied to 7 of the 8 newest. The domain was registered on 2008-12-12, and the Wayback Machine’s first capture dates from 2009-08-03. Some numbers we could not confirm independently. We did not look up NMLS #1353190 in the NMLS register or check Klarna Bank AB and Klarna Group plc in Swedish or UK company records, so those figures rest on Klarna’s own pages.

Who Klarna May Suit

Based on how the plans work, Klarna fits shoppers who already have the money for a purchase, or a predictable income that covers every installment, and who want to spread the cost over a few weeks at no extra charge. Pay in 30 days can also suit someone who wants to receive an item before paying for it.

It suits people less well if installments are the only way they can afford a purchase, or if they already juggle other debts. The mechanics that make Klarna free (on-time payments, no interest) stop working in your favor once a payment is missed: fees apply, collections can follow, and the default can appear on your credit report.

The Bottom Line

Klarna suits shoppers who already have the money for a purchase, or steady income to cover every installment, and want to spread the cost over a few weeks for free. It works against people who need installments to afford an item or already carry other debts, because missed payments bring fees, possible collections and damage to their credit report.