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Ultimate Mortgage Calculator

Rate Rises, Mortgages, Remortgages, Overpayments, Fixes and more

Compare fixed-rate mortgages Ditch
your fix?
Repay mortgage with savings? How much can I borrow?
Basic mortgage Compare two mortgages Overpayment calculator Offset mortgage vs savings Saving for deposit?
How long to save my house deposit?
Shows how long you must save for the deposit you need, including lump sum and/or monthly top-ups.
For 30+ property tools, see Free House Price Tools.
Likely property value?   £
Size of deposit needed?   %

What % deposit will I need?

The crucial factors for monthly payments are property price and the size of your deposit. Below are some indicative levels of the sort of rates you'll be able to get with your deposit, compared to other deals available.

  • 5-10% deposit:There's a good chance you can find a mortgage to suit you, but it certainly won't be cheap, so make sure itís affordable.
  • 10-15% deposit: Deals are usually available, but will still be on the more expensive side.
  • 15-25% deposit:This is where interest rates start to come down, with extra choice making deals more competitive.
  • 25% - 40% deposit:The best rates on the market, as cheap as it gets.

Also, remember your income will be taken into account, so even if you have - for example - a 20% deposit for a £500,000 property, you'll also need earnings well in excess of £100,000 a year before lenders will consider that you can afford the mortgage.

Full best buy comparisons to see top rates: MSE Mortgage Best Buys.

Size of savings now?   £
Pick either...
Amount saved monthly : OR Date deposit needed by:
Savings interest rate?    %
Full up-to-date best buys in Top Savings Accounts
Your tax rate?   


In order to create these results we have had to make a few assumptions. 1) Interest is charged monthly 2) Interest rate stays the same over the term 3) If you selected 'Interest only', we assume your standard monthly payment doesn't decrease even if you pay off some of the balance

IMPORTANT! Please read

This information is computer-generated and relies on certain assumptions. It has only been designed to give a useful general indication of costs.

It's important you always get a specific quote from the lender and double-check the price yourself before acting on the information. We cannot accept responsibility for any errors (please report faults above).

What the * means above

If a link has an * by it, that means it is an affiliated link and therefore it helps MoneySavingExpert stay free to use, as it is tracked to us. If you go through it, it can sometimes result in a payment or benefit to the site. It's worth noting this means the third party used may be named on any credit agreements.

You shouldnít notice any difference and the link will never negatively impact the product. Plus the editorial line (the things we write) is NEVER impacted by these links. We aim to look at all available products. If it isn't possible to get an affiliate link for the top deal, it is still included in exactly the same way, just with a non-paying link. For more details, read How This Site Is Financed.

Duplicate links of the * links above for the sake of transparency, but this version doesn't help

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