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Mortgage overpayment calculator

This mortgage overpayment calculator will show you how quickly you can pay of your mortgage by making overpayments every month.

If you can afford to do it, overpaying your mortgage can be a great way of quickly cutting down your mortgage repayment costs and becoming debt-free years earlier than you first planned to.

Not only can overpaying your mortgage reduce your mortgage term, it can also help you get a cheaper deal. This is because you own more of your home when your mortgage deal ends, increasing the chances of securing a cheaper deal when you come to remortgage.

This calculator can help figure out how much you could save by overpaying your mortgage.

Just enter in how much you have on your mortgage, what your term and interest rate is, and how much you want to overpay by each month, and we'll tell you how much you could save. 

And if you want to discuss your mortgage options, call Which? Mortgage Advisers for a free consultation on 0800 197 8461.

Get expert, one-to-one mortgage advice

If you'd like personalised advice on getting a mortgage, call Which? Mortgage Advisers for a free chat on 0800 197 8461 - or fill out the form below and they'll call you.


Which? Mortgage Advisers listen carefully to what you need, then search thousands of mortgages to choose the No.1 for you, even if you can only go direct.

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0292 267 0302
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Your home may be repossessed if you do not keep up your mortgage repayments