Andy Burnham's Your First Home pitch lowers the political deposit bar to 2.5%, but the Financial Conduct Authority's affordability framework still treats unsecured minimum payments as committed spending when lenders stress-test first-time buyers, meaning a £3,000 card balance can block a mortgage offer even if a government equity loan covers the purchase price.
How the sums work
Lenders apply an interest rate stress above the quoted mortgage deal and include recurring credit commitments at contractual minimums unless the borrower can prove a faster payoff plan accepted by underwriting. The FCA's mortgage conduct rules require firms to assess affordability on a sustainable basis, not on teaser rates alone. Card issuers may offer 0% windows, but mortgage underwriters often model reverting to higher annual percentage rates once promotions end.
Consumer Duty angle
The regulator's refreshed Consumer Duty priorities, published last week, put clearer credit-card promotional pricing on the enforcement agenda. That matters for households juggling balance transfers while saving for a home. Clarified promo terms help comparison, but they do not relax mortgage stress tests. Brokers report clients consolidating cards before applications, sometimes accepting higher personal loan rates to secure fixed payoff schedules underwriters prefer.
Interaction with Help to Buy history
During the last Help to Buy cycle, some buyers reached completion with small deposits but still failed later affordability checks when car finance or buy-now-pay-later plans expanded. The new scheme's details are pending, yet the FCA rulebook already governs how lenders must treat those cases. Shared ownership and equity loan products also require ongoing affordability reviews on staircasing.
What to do before applying
Obtain a credit file, list minimum payments across cards and overdrafts, and model three months of bank statements without missed direct debits. Paying down cards beats chasing a lower deposit headline if underwriters will stress-test the remaining balance anyway. When Your First Home details land in October, ask brokers whether participating lenders will apply any waiver for government-backed equity portions; until the FCA says otherwise, assume standard rules apply. Burnham's announcement is housing policy; the card desk's constraint is still monthly cash flow on paper.
Buy-now-pay-later blind spots
Short-term BNPL plans sometimes hide from credit files until providers report to bureaux. Underwriters increasingly ask for open banking feeds where customers consent. The FCA's ongoing work on BNPL information sharing could tighten this further in 2027, but today's applications still turn on visible minimum payments.
Broker tactics
Some advisers schedule a "clean-up quarter" where clients pay cards to zero and avoid new hard searches before remortgage season. Others use formal debt-management plans that lenders recognise. There is no regulatory shortcut tied to Your First Home; equity loans change loan-to-value, not committed expenditure lines unless paid off.
Complaints route
If a lender declines citing affordability, the firm must explain which stress rate and commitments it used. Disputes go through the Financial Ombudsman Service when internal complaints fail. Keeping paper trails of promotional APR end dates helps argue that reverting rates were modelled unfairly high.
Building societies with mutual ownership sometimes apply stricter internal buffers than large banks, especially for interest-only legacy books. First-time buyers at those lenders should ask whether manual underwriting can exclude BNPL lines that will clear before completion dates.
Help to Buy legacy
Thousands of households still staircasing out of older equity loans while carrying card debt from pandemic-era spending. Lenders treat those combinations case by case; Your First Home will not automatically clear legacy commitments.
MoneyHelper guidance still recommends paying more than card minimums when saving for a deposit; the government scheme does not change that personal finance baseline.
Chartered Institute of Bankers continuing education modules this autumn emphasise card commitment modelling for adviser exams, reflecting regulator focus.