Mortgage & Cost Calculators UK (2026): Plan Your Budget & Affordability

INTRO

Understanding what you can afford goes beyond just your mortgage payment.

This calculator hub brings together tools to help you estimate your monthly mortgage costs, test different interest rates, and combine your housing costs with everyday living expenses.

Use these calculators to build a realistic budget before buying a home or remortgaging in 2026.

Mortgage Monthly Payment Calculator

Estimate your monthly mortgage payment based on loan amount, interest rate, and term.

How to Use These Calculators

Use these tools together to understand your full financial position:

  • Start with the mortgage calculator to estimate payments
  • Adjust interest rates to see how changes affect your costs
  • Combine your mortgage with living expenses for a realistic monthly budget

This approach helps you avoid overstretching and makes it easier to plan for long-term affordability.

Mortgage Payment Calculator










Rate Change Impact Calculator













Your True Monthly Cost

Combine your mortgage and living costs to see what you can truly afford each month.

Total Monthly Cost Calculator













Mortgage Overpayment Calculator

See how making extra payments could reduce your mortgage term and save you thousands in interest.

Mortgage Overpayment Calculator













Overpaying your mortgage can reduce the total interest you pay and help you become mortgage-free sooner.

Next Step: Check What You Can Afford

Once you’ve estimated your monthly costs, explore our full guides to see how much you can borrow and what lenders will look for.

RELATED GUIDES

To get a complete financial picture, combine these tools with our other calculators, including student budget planners and UK cost of living breakdowns. This will help you understand how your mortgage fits into your overall monthly expenses.