Mortgage Fee Comparison Calculator Guide

A product with a lower interest rate can still cost more if fees are high or the loan is small. Compare both payment and fee assumptions before deciding.

Start with these estimates

Primary tool Estimate payment difference Helpful next check Compare remortgage scenarios

Calculator outputs are estimates only. They do not confirm lender acceptance, product availability, rates, fees or suitability.

This page is written as a calculator companion: use it to choose sensible inputs, compare scenarios and understand the limits of an estimate.

What to check before relying on the estimate

Separate upfront fees, added-to-loan fees and broker fees where applicable.
Compare costs across the deal period as well as the full mortgage term.
Ask an adviser to explain annual percentage rate of charge and total payable figures for real products.

When an adviser review may help

A mortgage adviser or broker partner can compare your circumstances with lender criteria and explain any fees before you decide whether to proceed. This website provides general information and calculator tools; it provides general information only and does not make regulated mortgage recommendations.

Keep the estimate realistic

Use current balances, evidenced income, realistic property values and cautious rate assumptions. If a result looks affordable only under one optimistic assumption, run a second scenario before making plans.

Frequently asked questions

Is the lowest interest rate always best? +

No. Fees, incentives, term and eligibility can change which product is appropriate.

Should I add fees to the mortgage? +

That may reduce upfront cost but can increase interest paid. Consider guidance before choosing.

Browse mortgage calculators Compare repayment, borrowing, affordability and stamp duty estimates. Check your affordability Estimate affordability from income and commitment assumptions. Estimate monthly repayments Model repayments using your own rate, term and deposit assumptions.

Calculator-led mortgage planning

UK Mortgage Calculators is centred on practical estimation tools. The pages help you model cautious scenarios before you decide whether to request a broker or adviser callback.