Answers · UK 2025/26

How big a mortgage can I get on a £300,000 salary?

Typically around £1,200,000 to £1,350,000, based on the common 4x to 4.5x income multiple lenders apply (4 to 4.5 times £300,000). At this income level, lending is almost always arranged through private banking rather than standard high street products.

Last updated: 10 July 2026Last reviewed: 10 July 2026How we verify

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Most UK lenders cap borrowing at roughly 4 to 4.5 times gross annual income, so on a £300,000 salary you could typically borrow between £1,200,000 and £1,350,000, though at this level lending is almost always arranged through private banking or high-net-worth divisions rather than a standard high street calculator. Worked example: borrowing £1,350,000 over 25 years at 5.0% costs about £7,892 a month. Take-home pay on a £300,000 salary is roughly £14,961 a month for 2026/27 after Income Tax, National Insurance and the Personal Allowance taper (fully withdrawn above £125,140, so most of this salary is taxed at the 45% additional rate above that point), so this payment is around 53% of net income. Private banks at this level typically base lending decisions on total assets, investment portfolios, bonus and dividend history, and future earning potential, often allowing larger multiples than the standard 4-4.5x for clients with substantial net worth. Adding a deposit increases the property price you can target: £1,350,000 borrowing plus a £350,000 deposit buys a property around £1,700,000. Use the mortgage affordability calculator as a starting-point estimate.