Mortgage Repayment Calculator
Monthly repayments, total interest over the term, a rough affordability check — and, because buying is political, what each party's stamp duty plan would do to your upfront costs.
Your mortgage
Why your mortgage is on the ballot paper
Two of the three big costs of buying — the deposit and stamp duty — are live political questions. The Conservatives would abolish stamp duty on main homes, Reform would zero it below £750,000, the Proportional Property Tax would scrap it in exchange for an annual charge, and the First Job Bonus would turn young workers' National Insurance into deposit money. Meanwhile interest rates — the third cost — respond to how credible the market finds each party's borrowing plans, which is exactly what our "Reform: the money" explainer digs into.
Frequently asked questions
How much would a £260,000 mortgage cost per month?
At 4.5% over 25 years, about £1,445 a month, repaying roughly £433,600 in total — £173,600 of it interest. Use the calculator to adjust the rate, term and deposit for your own case.
How much can I borrow for a mortgage?
Most lenders cap lending around 4.5× household income, adjusted for outgoings and rate stress-tests. On £55,000 household income that's roughly £247,500. The calculator flags when your loan crosses that line.
Which party would cut the cost of buying a home?
On upfront costs: the Conservatives would abolish stamp duty on main homes, Reform would charge 0% below £750,000, and the Proportional Property Tax would scrap it entirely in exchange for an annual property charge. On deposits: the Conservatives' First Job Bonus redirects young workers' first £5,000 of NI toward a deposit.