Answers · UK 2025/26

How much are mortgage repayments on a £600,000 mortgage in the UK?

A £600,000 repayment mortgage at 4.5% over 25 years costs approximately £3,335/month (£1,000,498 total). At 5%, monthly payments rise to about £3,508 (£1,052,262 total). Interest-only at 4.5% costs £2,250/month, but the £600,000 capital is still owed at the end.

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

Full answer

For a £600,000 capital-and-interest repayment mortgage in the UK, monthly payments depend on rate and term. 25-year term: 4.0% £3,167/month (£950,106 total); 4.5% £3,335/month (£1,000,498); 5.0% £3,508/month (£1,052,262); 5.5% £3,685/month (£1,105,357); 6.0% £3,866/month (£1,159,743). 30-year term: 4.0% £2,864/month (£1,031,217); 4.5% £3,040/month (£1,094,440); 5.0% £3,221/month (£1,159,535); 6.0% £3,597/month (£1,295,029). Interest-only at 4.5%: £2,250/month, with the £600,000 capital still owed at the end. Borrowing at this level usually requires gross household income around £133,000 to £150,000 under standard multiples, and lenders often move to specialist or private banking teams above £500,000-£1,000,000 of borrowing, which can offer more flexible affordability assessments for high earners. A 10% deposit on a £667,000 property (90% LTV) reaches some lenders, though many require larger deposits at this loan size. Use the mortgage calculator to model your own scenario.