Which UK Mortgage Lenders Ask About BNPL? (2026)

Three weeks before completion, a Klarna payment for a sofa showed up on a bank statement a mortgage underwriter was reviewing. Nobody had lied. Nobody had hidden anything. The buyer just didn’t think a £340 interest-free instalment counted as “debt” when the broker asked. The underwriter didn’t agree, and the completion date moved.

That’s the part most people miss about Buy Now Pay Later and mortgages: whether it “affects your credit score” is the wrong question. The real question is whether your lender will even ask about it — and most people have no idea the answer is different depending on who they apply to.

The short answer

When Which? submitted mortgage decision-in-principle applications to 10 of the UK’s biggest lenders, only four asked specifically about BNPL arrangements: Barclays, Halifax, Nationwide, and TSB. The other six didn’t ask at the DIP stage — but that doesn’t mean they never find out. Every lender pulls three months of bank statements during full underwriting, and a recurring Klarna, Clearpay, or Laybuy payment is impossible to miss on a statement, whether or not it’s on your credit file.

So the practical reality is this: no lender is guaranteed to ignore your BNPL use, and the ones that don’t ask upfront often catch it later — sometimes after you’ve already had an offer accepted on a house.

Why some BNPL shows up and some doesn’t

This is the bit that trips people up. Klarna’s own Pay in 3 and Pay in 30 products run a soft eligibility check that’s visible only to Klarna — it doesn’t appear on your credit file and doesn’t affect your credit score. But other providers work differently. Laybuy and Openpay have historically reported to credit reference agencies, meaning their agreements can show up when a lender runs a hard search. Clearpay only joined the FCA’s register of BNPL lenders on 29 May 2026, as part of the run-up to full regulation.

Two people can use BNPL identically and get treated completely differently by the same lender, purely based on which provider they used. That inconsistency is exactly what the incoming regulation is aimed at fixing.

The regulation changing this week

From 15 July 2026 — Regulation Day, as the FCA calls it — Buy Now Pay Later stops being a loophole and becomes a regulated form of consumer credit under the Financial Conduct Authority. The FCA’s final rules were published in February 2026, and from Regulation Day, BNPL providers must run affordability checks before lending, give clear upfront terms, and support customers who fall behind, including signposting free debt advice.

This matters for mortgage applicants specifically because it closes the gap between providers. Once BNPL is fully regulated, reporting and affordability standards become far more consistent across Klarna, Clearpay, and everyone else — which means lenders will have a clearer, more complete picture of BNPL borrowing than they do today. The FCA’s own data shows why they’re bothering: BNPL lending grew from £0.06 billion in 2017 to over £13 billion in 2024, with 10.9 million UK adults using it in the year to May 2024 alone.

If you’re planning to apply for a mortgage any time from mid-2026 onward, assume every BNPL agreement you hold will be visible to your lender in some form — because increasingly, it will be.

What actually damages a mortgage application

BNPL sitting on its own, used occasionally and paid on time, is not typically enough to sink a mortgage application. Lenders across the board have said as much. What actually causes problems:

• Missed or late payments — these can appear on your credit file and are treated the same as a missed payment on any other credit product.
• Multiple active BNPL agreements at once — even if each one is small, several running together reads as reliance on short-term credit, which lenders find harder to explain to underwriters.
• Opening new BNPL agreements close to your application — new credit commitments in the months before applying tend to worry lenders, since it looks like your financial position is changing right when they’re trying to assess it.
• Not disclosing it — this is the one that catches people out. Leaving BNPL off your application because you didn’t think it counted, then having it turn up in your bank statements, looks worse than the debt itself.

Before you apply

If a mortgage application is somewhere in your next 6–12 months:

• Avoid opening new BNPL agreements from now until completion, where you can.
• Clear existing balances if it’s realistic to do so — even paying down one or two small agreements simplifies the picture.
• Tell your broker about every BNPL agreement upfront, even ones you’re sure won’t show up. It’s far better for a broker to say “that won’t be an issue” than for an underwriter to find it unexplained.
• Check your credit file with all three UK bureaus before applying, since some BNPL providers report and some don’t — you want to know what a lender will actually see.

If you’re mid-application right now

If you’re already partway through a mortgage application and BNPL has come up — or you’re worried it will — don’t panic and don’t try to hide it further. Underwriters see BNPL agreements regularly enough that a single, well-managed one rarely derails a case on its own. What actually slows things down is the back-and-forth that happens when something unexplained shows up on a bank statement partway through underwriting. That delay is often worse for buyers than the BNPL agreement itself, especially if you’re in a chain with a completion date already set.

The fastest way through it is a short written explanation from you, provided proactively rather than in response to a query: what the agreement was for, the outstanding balance, and confirmation of whether it’ll be cleared before completion. Brokers deal with this constantly, and a lender is far more comfortable with a borrower who volunteers the detail than one who gets caught out by it.

The part regulation won’t fix

Even after 15 July 2026, affordability checks and clearer terms won’t change one thing: BNPL is still a form of borrowing, and every mortgage lender treats borrowing as borrowing, regardless of whether it charges interest. The “interest-free” framing is what makes BNPL feel different from a credit card, but a mortgage underwriter doesn’t care whether a commitment charges interest — they care whether it’s a monthly outgoing that reduces what you can afford to repay. Regulation will make that outgoing more visible and more consistently reported, not less relevant. If anything, it becomes harder to argue that a BNPL agreement shouldn’t be factored into an affordability assessment, since the FCA’s own rationale for regulating it in the first place is that it behaves exactly like credit.

Frequently asked

Will my mortgage get rejected just for using Klarna?
Not on its own, in most cases. Lenders look at your entire financial picture — income, outgoings, existing debt, credit history. Occasional, well-managed BNPL use is unlikely by itself to cause a rejection. It’s missed payments, multiple open agreements, or undisclosed BNPL turning up unexpectedly that cause real problems.

Do I have to tell my broker about BNPL that doesn’t show on my credit file?
Yes. Even if a provider like Klarna doesn’t report to credit reference agencies, it can still show up on your bank statements, which every lender reviews during underwriting. Disclosing it upfront avoids the awkward conversation later.

Does it matter which BNPL provider I use?
Currently, yes — some report to credit reference agencies and some don’t, so the same spending habit can look different depending on the provider. That inconsistency is exactly what the FCA’s new rules, in force from 15 July 2026, are designed to reduce.

How long before applying should I stop using BNPL?
Most brokers suggest avoiding new agreements for 3–6 months before you apply. It’s less about the amount and more about not adding new credit commitments right when a lender is trying to get a stable read on your finances.

Read more in our UK debt help hub for guidance on managing debt before a major application, or explore our full library of free tools.