You've probably clicked Pay in 4 at the checkout without thinking too hard about what you were agreeing to. Half of UK shoppers under 35 have used Klarna, Clearpay, or PayPal Pay in 4 at least once in the last year, and most assumed it was basically a clever payment method. From 1 April 2026, that assumption stopped being true. The Buy Now, Pay Later providers are now regulated consumer credit, supervised by the Financial Conduct Authority, and the changes affect every shopper.
This isn't a panic story. BNPL is still useful — sometimes genuinely the best option for a particular purchase. But the rules of the game have shifted, and the changes are not all in your favour.
What the FCA actually changed in April 2026
The new regime ends the long-running exemption that allowed BNPL providers to sit outside Section 75, outside affordability rules, and outside credit reference reporting. Five concrete things changed on 1 April:
- BNPL agreements now appear on your credit file at Experian, Equifax and TransUnion
- Providers must run an affordability check before approving any plan over £50
- Section 75 protection now applies to purchases over £100, the same as credit cards
- Providers must communicate in clear, regulated language — no more hiding the credit relationship
- The Financial Ombudsman Service handles complaints, with the same redress framework as banks
Most of those are improvements. The credit file change is the one that surprises people.
How BNPL now hits your credit score
Before April 2026, you could use Klarna ten times a month and your credit score was unaffected. Now, every active BNPL agreement shows up as an open credit account on your file. That has three effects.
First, it changes your credit utilisation ratio — the percentage of your available credit you're currently using. If you have one credit card with a £5,000 limit and a £500 balance, your utilisation is 10%. Add three active Klarna plans totalling £400, and lenders calculating utilisation now see £900 used against £5,400 of available credit (the £400 is treated as both used and available because BNPL is "instalment" rather than "revolving"). The maths gets fiddly, and not in your favour.
Second, every new Pay in 4 agreement triggers a soft search — but every approved plan opens a fresh credit account, which knocks a few points off your average account age. Open six BNPL plans in a year and your credit file looks volatile. Mortgage and car finance lenders read that as risk.
Third, missed BNPL payments now report exactly like missed credit card payments. A single 30-day late mark stays on your file for six years and can drop your score by 60–80 points. Pre-2026, providers issued late fees but couldn't damage your credit. Now they can.
The Mortgage Lender Effect
Several major UK mortgage lenders quietly updated their criteria in March 2026. Halifax, Santander UK, Nationwide and HSBC UK now treat active BNPL plans as ongoing credit commitments when calculating affordability. If you have £600 of monthly BNPL payments active when you apply, your maximum mortgage amount drops by roughly £40,000–£50,000 on a typical 4.5x income multiple. For first-time buyers in particular, this is a meaningful constraint that didn't exist 18 months ago.
The advice is plain: clear all BNPL plans at least three months before applying for any large credit (mortgage, car finance, personal loan). Three months is roughly how long it takes for closed BNPL accounts to drop off the active commitments view in most lender systems.
When BNPL still makes sense
This isn't the part where I tell you BNPL is always wrong. It isn't. Three use cases still hold up after April 2026.
The cash-flow smoothing case. You're buying something genuinely useful (washing machine, school uniform, work tools) and your income arrives unevenly. Splitting £400 over four payments lets you align the cost with paydays without paying credit card APR. Provided you'd already decided to buy the thing and you make every payment on time, the credit file impact is small and the cash-flow benefit is real.
The Section 75 case for £100–£500 purchases. If you're buying from a retailer you don't fully trust — a marketplace seller, a less-established direct-to-consumer brand — Pay in 4 over £100 now gives you Section 75 chargeback protection that a debit card simply doesn't. If the goods don't arrive or are faulty, the BNPL provider is jointly liable. This is genuinely useful.
The interest-free deferral case for known short-term gaps. You're confident the cash is arriving in six weeks and you want to make the purchase now. A 0% credit card would also work but takes a week to get approved; BNPL approves at the checkout. For genuinely short, certain gaps, the convenience is worth it.
Provider differences in 2026
Klarna runs three products in the UK: Pay in 3 (no interest, three monthly payments), Pay in 30 (single payment in 30 days), and Klarna Financing (longer-term, up to 36 months, 18.9% representative APR). Only Pay in 3 and Pay in 30 escape interest charges. The Financing product is straightforward consumer credit and has always been regulated.
Clearpay's only product is Pay in 4 — four equal payments, the first taken at checkout. No interest, late fees only.
PayPal Pay in 4 mirrors Clearpay's structure and is only available on transactions between £30 and £2,000.
The new entrant making waves in 2026 is Monzo Flex — a credit-account-style product that lets you split any existing transaction (made in the last 7 days with a Monzo card) into 3 or 6 instalments, with 3-month plans interest-free and 6-month plans at 19% APR. Monzo Flex was always FCA-regulated, so its credit file reporting is well-established.
The most common mistakes in 2026
The errors splitting on UK shoppers' credit reports right now are predictable. Over-stacking — running four or five Klarna plans simultaneously alongside a maxed-out credit card. Forgetting an old plan and missing a payment after the saved card expired or got cancelled. Splitting a refundable purchase, then taking the refund before the BNPL plan is closed, leading to a confused credit report entry. And — most expensively — using BNPL for the deposit on a holiday or large purchase that subsequently gets cancelled, leaving you on the hook for instalments on something you no longer own.
The simplest discipline is the one your grandmother would recognise. Don't owe money for something you've already used up. Don't run more than two active plans at once. Don't use BNPL for things you couldn't afford in cash if you absolutely had to. Those rules eliminate 90% of the post-2026 horror stories. The rest is just doing the maths and reading what you're agreeing to.