Buy Now Pay Later Affordability Checks Now Block UK Shoppers

The automatic yes at checkout is gone

For about a decade, the buy now, pay later button at an online checkout rarely asked questions. In the UK that has changed. Lenders such as Klarna and Clearpay now have to check whether a shopper can afford to repay before they split a purchase into instalments. Anyone who fails those checks can be refused at the till.1214 The rules have applied since the summer. They are getting fresh attention now because Black Friday and the Christmas season are close, and some shoppers are being turned down for the first time.1317

The change itself is not new. The Financial Conduct Authority (FCA) took over regulation of the sector on 15 July 2026. From that date, any lender offering BNPL needs the regulator's permission to operate.310 What has happened since is that the rules have started to bite. The first wave of reports focused on new protections for shoppers. The coverage in early November focuses on refusals, lower spending limits and closed accounts.1116

What the rules actually require

Reports broadly agree on the main points. Lenders must give clear information before a shopper signs up: when payments are due, how much each one is, and what happens if one is missed.710 They must assess creditworthiness, including affordability, before lending.10 Customers who fall into financial difficulty must be pointed towards debt advice first, rather than being passed straight to debt collectors.1219 Complaints can now go to the Financial Ombudsman Service. The ombudsman has said it expects about 2,000 BNPL complaints this financial year.10

Refund rights are a big part of the package. Several consumer guides say purchases costing between £100 and £30,000 now get Section 75-style protection. That means the lender shares liability with the retailer if goods are faulty, never arrive, or the seller goes bust.235 The Treasury presents this as closing a gap: until now, BNPL users had weaker rights than people who paid by credit card.16 Rachel Blake, economic secretary to the Treasury, described the rules as delivering "proper checks before credit is offered, real rights when things go wrong, and support rather than pressure" for borrowers in trouble.19

The regime has limits that much of the coverage leaves out. Only agreements signed on or after 15 July 2026 are covered, and older plans stay under the previous, unregulated arrangements until they are paid off.39 Only third-party lenders are covered. Retailers that offer their own instalment credit are exempt.917 Many lenders are also not yet fully authorised. Firms that registered for the temporary permissions regime between 15 May and 1 July have six months from the start of regulation to apply for full authorisation. That deadline falls in mid-January 2027, after the Christmas rush.117

Where the reporting diverges: how strict is "strict"?

Headlines about strict background checks suggest one tough test for everyone. The detail of the reporting is less clear-cut. The BBC's coverage says affordability is now tested on every transaction, not just once when the account is opened, and that the level of scrutiny depends partly on how much is borrowed.1117 Some consumer finance sites go further. They describe a full affordability assessment on every purchase, including orders under £50 that previously faced no check.19 Others describe the checks as "proportionate": lighter for small amounts and heavier for larger ones.3

The FCA's own wording supports the proportionate version. A small online order and a big-ticket purchase can face very different levels of scrutiny.317 The likely outcome is that most low-value checkout transactions still go through quickly, while some customers start to find more friction. Those are people whose existing instalments or overall finances raise flags. Calling the regime "strict background checks" is accurate about what lenders are legally obliged to do. It probably overstates how most shoppers will experience it day to day.

The credit-file angle is also uneven. One guide says BNPL behaviour now shows consistently on credit files.1 A different account notes that the FCA rules do not themselves require reporting to credit reference agencies, and that practice varies by provider.3 Experian has warned that opening new BNPL accounts may be taken into account when people later apply for a loan, credit card or mortgage.10 Shoppers should not assume either that their BNPL history is invisible or that it is reported in the same way everywhere.

Klarna and the industry: welcoming the rules they shaped

The big providers have welcomed the rules in public. A Klarna spokesperson said the company has called for regulation since 2020. The spokesperson said the FCA's rules largely formalise what Klarna already does: running affordability checks, showing costs upfront and reporting to credit reference agencies.10 Clearpay said regulation would create a consistent operating environment, and stressed safeguards it already had, such as pausing accounts after a missed payment and capping late fees.710 UK Finance backed what it called the FCA's more flexible approach.4

That tone makes commercial sense. Market leaders that already run underwriting systems can absorb compliance costs more easily than smaller rivals, and regulation gives them a legitimacy the sector lacked. The cost falls on the business model, not on the incumbents themselves. BNPL grew because checkout was frictionless, and each added check is a small extra hurdle.

The market is large enough that the effects will spread. According to the FCA, the UK BNPL market grew from about £0.06bn in 2017 to more than £13bn in 2024, and 10.9 million adults used BNPL in the year to May 2024.17 Experian counted more than 100 million BNPL transactions in 2025, worth over £7 billion, with 98.5% of balances repaid on time.3 That repayment figure is the industry's strongest argument that the product is mostly used responsibly. It also shows that the regulator's worry is a minority of heavy users, not the typical shopper.

Who gets refused, and where they go next

This is the most important unresolved question. Nobody yet knows how many people will be turned away. Research cited by financial-inclusion body Fair4All Finance suggests up to 30% of users could eventually be declined.17 StepChange has said it has seen clients with more than 30 BNPL agreements at once, which is exactly the kind of build-up that affordability checks are meant to prevent.6

The risk is that refusals land on the shoppers with the least room in their budgets. One analysis points out that the people most likely to fail are those using BNPL for essentials such as school shoes or a winter coat. Lender Fair for You warned that these customers will still need a replacement washing machine after one way of paying has closed.17 Advice from former Citizens Advice volunteer Sara Williams, who writes as Debt Camel, matches this. She suggests delaying non-essential purchases, cutting subscriptions that compete with existing instalments, and contacting debt charities and food bank services if BNPL has been covering basics.1114

The early evidence points to the regulation working as designed: it is stopping debt from piling up at the point of sale. Whether that leaves vulnerable households better off, or pushes them towards more expensive credit, will only become clear once refusal data and ombudsman complaints build up in 2027.

A transatlantic split on BNPL loans

The UK is part of a wider European move. The Czech Senate has approved rules requiring affordability checks even on interest-free deferred payments, with a cap linked to the national average wage. Those rules take effect in February 2027 under an EU consumer credit directive.18

The United States has gone the other way. Several analyses report that the Consumer Financial Protection Bureau withdrew its 2024 interpretive rule treating BNPL like credit cards in May 2025, and said it would not reissue it. That leaves states to fill the gap.2226 Some industry commentary still describes a federal BNPL rule as taking effect in 2026.28 The withdrawal is documented in more detailed analyses, though, which makes that claim look out of date. Instead, credit reporting has become the US pressure point. Affirm began furnishing pay-over-time loans to Experian and TransUnion in 2025, while Klarna and Afterpay have held back US pay-in-four data.22 The Congressional Research Service also notes that Affirm is the only major firm consistently reporting pay-in-four data.21

For companies like Klarna and Affirm, this means running different checkout experiences on each side of the Atlantic. In the UK, the instalment button now asks questions before it says yes. In the US it largely does not, at least for now. Britain's experience over this Christmas season will probably shape how other regulators decide whether to follow.