Work out how much you can borrow

Buying a home? Understanding your mortgage costs is key to making informed financial decisions.

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Mortgage calculators: Take the guesswork out of home buying

Our mortgage calculators help you estimate:

  • your monthly mortgage repayments costs.
  • how much you can afford to borrow with our affordability calculator.
  • how much you need to save with our deposit calculator.
  • your Stamp Duty costs.

Affordability calculator

Knowing how much you can borrow is important - it'll essentially determine which properties are within your budget. Use our affordability calculator to work out how much you can roughly borrow.

Deposit calculator

If you've a mortgage in mind, check to see if you already have enough of a deposit to apply now. If not you can work out how soon you could apply, depending on how much you can save each month.

Mortgage repayment calculator

Whether you've found a mortgage deal and not sure what the monthly payments might be or you're looking to see how much you can afford, use our mortgage calculator to get the information you need.

Stamp duty calculator

If you aren’t a first-time buyer buying up to £300,000 , you’ll have to pay stamp duty on your house purchase. Use our tool to calculate how much stamp duty you’ll pay today.

Frequently asked questions

How do lenders decide how much I can borrow?

Lenders look at a few key things:

  • The type of mortgage product you’re looking for. For example, a fixed interest rate and how long you want to fix for.
  • Your income: how much you earn, including salary, bonuses, or other regular income.
  • Your outgoings: bills, debts, and other regular spending. 
  • Your deposit: the more you put down, the better your borrowing options. 
  • Your credit history: how well you’ve managed borrowing in the past.

It’s all about making sure you can afford your repayments now and in the future. 

How do mortgage repayments work?

When you take out a mortgage, you repay it monthly over a set number of years. Each payment usually covers:

  • The loan itself (capital): the amount you borrowed. 
  • Interest: what the lender charges for lending you the money. 

If you choose a repayment mortgage, you’ll pay off both the capital and interest each month, meaning you’ll own your home outright at the end of the term. If you go for an interest-only mortgage, you’ll just pay the interest each month and will need a plan to repay the loan later. 

Do I need to enter personal details to use a calculator?

Nope! Our calculators are free to use, and you don’t need to enter any personal details or sign up for anything.

Will using a calculator affect my credit score?

Not at all. They’re just tools to help you get an idea of your finances, no credit checks involved. 

What if my situation changes after using a calculator?

That’s totally fine. These tools give you a snapshot based on what you enter. If your income, deposit, or interest rates change, you can always come back and try again.

Can I get mortgage advice after using the calculators?

Absolutely! If you’d like to chat about your options our trusted partner Mortgage Advice Bureau can answer any questions you may have and will talk you through the next steps.