Mortgage Guide
A rough guide to how much you might be able to borrow and what monthly repayments could look like, based on common UK lender rules of thumb for 2026.
What this means
How this is calculated
Most UK high-street lenders use an income multiple of 4x to 4.5x combined gross income as a starting point, with some specialist lenders offering up to 5.5x for certain borrower profiles — this tool shows that full range rather than one number, because the figure varies significantly by lender. Since the Bank of England withdrew its mandatory 3%-above-SVR stress test in August 2022, individual lenders now set their own stress-testing methodology, so we also show what your repayment could look like if rates rose by 2 percentage points, as a general illustration of that buffer. Monthly repayments are calculated using the standard capital-repayment (annuity) formula, not interest-only.