Mortgages: Could Klarna be stopping you from getting on the housing ladder — despite perfect credit score?

Britons with flawless credit histories are being turned away by major banks because of their use of buy now, pay later services, new research has claimed.

A survey of 21 mortgage brokers found applicants with perfect credit scores face rejection when lenders discover transactions from platforms such as Klarna on their records.

The study, which was conducted by the Association of Mortgage Intermediaries, highlights the growing impact of BNPL (Buy Now, Pay Later) usage on home loan applications.

Despite meeting traditional lending criterias, many prospective homeowners are finding that their use of interest-free payment schemes has become a barrier to securing mortgages from high street lenders.

The research revealed that 67 per cent of brokers have seen BNPL use contribute to or directly cause mortgage rejections.

Of these, 40 per cent involved clients who used such services regularly, while 21 per cent said borrowers had used them habitually.

One broker reported that a client was rejected by four major banks after using BNPL services several times, despite maintaining a perfect credit score.

Another applicant was refused when a lender found 33 deferred Klarna payments over twelve months. In addition, 27 per cent of brokers said BNPL use led to clients being offered higher interest rates than expected.

Some applicants presented credit files more than 150 pages long due to numerous Klarna transactions, complicating the review process for lenders.

How Banks and building societies treat BNPL commitments during mortgage assessments

Some major lenders disregard BNPL activity altogether. Nationwide only considers agreements lasting more than six months and reports few such cases.

Yorkshire Building Society sees occasional BNPL use as unproblematic unless combined with other signs of financial stress.

Meanwhile, Santander treats active BNPL balances as existing debt, which can reduce the maximum mortgage amount available.

Leeds Building Society factors BNPL commitments into affordability checks to ensure applicants can still meet repayments when balances are due.

NatWest classifies BNPL as committed expenditure in affordability assessments, while Coventry Building Society warns that regular use could affect first-time buyers already close to their borrowing limits.

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Klarna argues completed purchases show good money management and can even enhance a mortgage application.

A company spokesman said: "If a mortgage broker tells you that using Klarna means you won't get a mortgage, find a different broker. Lenders have made clear they see healthy, short-term, interest-free BNPL use as a normal part of modern money management – and when used responsibly, it can help, not hinder, your chances of getting a mortgage."

Clearpay said it has received no customer concerns about mortgage impacts, describing BNPL as an "everyday payment" option for consumers seeking flexible financial tools.

The company warned parts of the financial industry misunderstand BNPL’s purpose and user behaviour.

Both firms criticised lenders for being slow to adapt to new payment habits, with Clearpay noting 95 per cent of its transactions are settled on time.

Mortgage advisers are now urging BNPL users to prepare carefully before applying for home loans.

David Hollingworth, from L&C, advised reviewing credit reports with major agencies and resolving any negative entries quickly.

He said clearing overdue payments and maintaining a clean history can significantly strengthen applications.

Mortgage adviser Jo Murgatroyd recommended closing dormant BNPL accounts and ensuring timely payments on active ones.

She said borrowers should be fully transparent with brokers about any BNPL commitments.

Experts also suggest reducing non-essential spending and avoiding new credit agreements before applying for a mortgage.

They argue showing consistent, responsible credit management can improve outcomes with lenders, while minimising BNPL use helps applicants appear financially stable.

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