Mortgage calculator

See what your mortgage will cost each month and in total, then test what overpaying would save you in interest and time.

The property and loan

What you're buying and borrowing.

Property value

Deposit

£ amount % of value

Enter a property value and deposit to see your loan amount.

Mortgage term

years

Interest rate

% a year

Mortgage type

Repayment Interest only

Each payment covers interest and part of the loan, so it's fully repaid at the end of the term.

Initial rate period (fixed or tracker deal)

Deal length

years

Rate after the deal ends

Usually the lender's standard variable rate. Leave blank to keep the same rate.

I know my monthly paymentEnter it and we'll work out how long the loan takes to clear

Optional. Most lenders allow 10% of the balance a year without a fee.

Extra each month

Extra once a year

Paid at the end of each year.

One-off lump sum

Paid at the end of year

When I overpay, I want to

Pay it off sooner Lower my monthly payment

Paying it off sooner saves the most interest. Ask your lender which they do by default.

Overpay or save?Compare overpaying with putting the money in savings

Savings interest rate

% a year

The best easy-access or fixed rate you could get.

Your income tax band Interest is only taxed above your Personal Savings Allowance, which is applied automatically.

Uses the overpayments you entered above. Both options spend the same cash each month, so the comparison is fair.

Buy-to-letRental income, tax with the mortgage interest restriction, yield

Monthly rent

Other costs per year

Letting agent, insurance, repairs, service charge.

Your other taxable income

Salary, pension or profits before tax. The rent is taxed on top of this, using your Personal Allowance and tax bands automatically.

Where you live

England, Wales or NI Scotland

Results update as you type. Your inputs are saved in the page address so you can bookmark or share them.

Enter your property value, deposit and interest rate to see your payments.