For nine years, Klarna, Clearpay and PayPal's Pay in 3 sat in a peculiar blind spot of UK consumer law: regulated enough to advertise on national television, unregulated enough that none of the affordability checks, complaint rights or credit-reporting standards that apply to a £200 overdraft applied to them. That gap closed on 15 July 2026, when the Financial Conduct Authority's new regime for deferred payment credit — the technical name for interest-free Buy Now Pay Later — came into force. If you have ever tapped "Pay in 3" at a checkout without a second thought, the rules governing that tap just changed, and the change reaches further than most shoppers realise.
What Actually Changed on Regulation Day
The FCA calls 15 July 2026 "Regulation Day" for a reason — it is the hard cut-off separating the old unregulated market from the new one. Before that date, a firm offering interest-free credit repayable in twelve or fewer instalments over twelve months or less (the legal definition of deferred payment credit, or DPC) did not need FCA authorisation to lend you money. After it, every DPC provider needs either full consumer credit permissions or, at minimum, a slot in the Temporary Permissions Regime the FCA opened for registration on 15 May 2026. To qualify for that temporary window, a firm had to prove it was already offering DPC agreements on or before 15 July 2025 and pay the required fee before registration closed two weeks ahead of Regulation Day; once admitted, it then had six months to file a full application or lose the right to lend automatically. Any provider that missed that registration deadline simply cannot originate new Buy Now Pay Later agreements in the UK any more — full stop.
This did not happen overnight or without warning. The FCA published its final rulebook, Policy Statement PS26/1, on 11 February 2026, giving the industry five months to build compliance systems, retrain staff and rewrite checkout flows before the deadline actually arrived. Guarantor loans and payday lending went through comparable overhauls a decade ago, and both markets shrank hard in the first year of regulation before settling into something closer to sustainable. Deferred payment credit is a bigger market than either of those ever was: transaction value grew from roughly £60 million in 2017 to more than £13 billion in 2024, with something like 11 million UK adults using it regularly, so the ripple effects of this particular overhaul will be harder to ignore.
The New Rules Lenders Actually Have to Follow
The headline change is affordability. Lenders must now run proportionate checks before approving an agreement, and crucially, that requirement applies even to purchases under £50 — the price bracket that previously slid through on a one-click "yes" because nobody bothered checking whether a fifteen-quid top confirmed anything meaningful about a borrower's finances. Providers also have to hand over clear, upfront information: the exact instalment dates, the exact amounts, and what happens the moment a payment is missed, rather than burying that detail behind a terms-and-conditions link nobody opens.
- Firms must offer genuine support to customers who fall into financial difficulty, including a referral to free debt advice where that is the appropriate next step.
- Missed-payment handling can no longer default straight to a late fee with no forbearance option built in.
- And for the first time, a Buy Now Pay Later customer with a complaint has somewhere to take it beyond the lender itself — the Financial Ombudsman Service now has jurisdiction over DPC disputes, the same body that already handles complaints about credit cards and mortgages.
That last point is the one worth pausing on: an unresolved dispute over a missed Klarna payment used to end wherever the lender's own complaints team decided it should end, and now it doesn't.
Credit Reference Agencies Are Watching Differently Than You Think
Here is the part most coverage of the new rules glosses over: regulation and credit-file visibility are not the same thing, and conflating them will get you a nastier surprise than the FCA's rules were designed to prevent. The UK runs three separate credit reference agencies — Experian, Equifax and TransUnion — and each one holds different data, runs a different scoring model, and only sees what individual lenders choose to report to it. A short "Pay in 3" plan paid off on time still, in most cases, involves no hard search and leaves little trace on any of the three files; a longer, interest-bearing BNPL product is a different animal entirely and can already show up as a credit search and an open account. Miss a payment on either type, though, and the picture changes fast — a default can land on your file even when months of on-time payments before it never did (the kind of gap between "I paid it off" and "the file still says I didn't" that catches even careful shoppers out). This is a genuinely important nuance, because it means two people who behave identically — six on-time Klarna payments each — can walk away with completely different credit histories depending on which lender they used and which of the three agencies that lender reports to. Add in the standardised reporting the FCA's new affordability-check regime is expected to push providers toward over the next year or two, and the direction of travel is clear: BNPL is moving from a footnote most lenders ignored to a data point mortgage brokers increasingly expect to see. If you are planning to apply for a mortgage or a car loan within the next twelve months, that is worth knowing before you open a fourth simultaneous Pay in 4 plan across three different retailers, not after an underwriter asks why your file shows four almost-identical short-term credit lines opened in the same fortnight.
If You Already Have a Live Buy Now Pay Later Balance
Nothing about Regulation Day retroactively changes agreements you signed before 15 July 2026 — those stay exempt from the new regime, and your provider can carry on servicing them under the terms you originally agreed. What does change is who is allowed to lend you anything new. If your usual BNPL provider did not secure Temporary Permissions Regime status or full authorisation, it is legally barred from offering you another agreement, though it can still collect what you already owe. Worth checking, if you have not shopped with a particular BNPL brand in a few months: a quick look at the FCA's register before your next "Pay in 3" checkout takes thirty seconds and confirms whether the firm behind that button is actually allowed to be there.
How to Use Buy Now Pay Later Sensibly From Here
Treat every Buy Now Pay Later agreement as a loan with a due date, not as a discount — because that is exactly what the FCA has just formally decided it is. The better habit is lining your instalment dates up against your actual payday rather than against the retailer's default schedule, since a mismatch of even three or four days between a Pay in 4 due date and your salary landing is the single most common reason people default on plans they could genuinely have afforded. Avoid running more than one active BNPL agreement at a time if you are already carrying a credit card balance or an overdraft, because the interest-free label makes it easy to forget that a missed instalment on any of them behaves exactly like a missed instalment anywhere else once it reaches your file. Read the affordability check when it appears rather than clicking through it, because under the new rules that check is doing real work on the lender's side, and skipping past it tells you nothing about whether the repayment schedule actually fits your month. And if a retailer offers Buy Now Pay Later as the pre-selected default at checkout — increasingly common since Regulation Day pushed several providers to redesign their flows — take the extra second to confirm you actually wanted deferred payment rather than paying in full, since that default nudge is precisely the kind of soft pressure the new affordability rules were meant to counterbalance, not eliminate. None of that means giving up Buy Now Pay Later. It means treating the checkout button with the same five seconds of attention you would give a direct debit mandate, because as of Regulation Day, legally, that is exactly what it is.
The exception is the genuinely interest-free, single-item Pay in 3 plan used occasionally and paid off within weeks. Used that way, and only that way, the FCA's own market data suggests it causes little measurable harm — the £13 billion in transaction volume the sector recorded in 2024 was not primarily driven by defaults, it was driven by ordinary shoppers spreading a genuinely affordable cost over a few weeks. The regulation arriving now is not an argument for avoiding Buy Now Pay Later altogether. It is an argument for using it the way the FCA has just spent a year building rules to enforce anyway — one instalment plan at a time, matched to money you actually have on the day it is due.