The Bank of England is expected to raise interest rates again today for the thirteenth time in a row after inflation remained unchanged at 8.7%.
The base rate - which influences the interest rates many lenders charge for mortgages, loans and other types of credit - is currently at 4.5%.
Some analysts expect the base rate to rise by 0.25 percentage points to 4.75% - with others predicting an even bigger increase to 5%.
New data from TotallyMoney and MoneyComms shows another increase would add £32 to the monthly repayments for a typical variable-rate mortgage borrower in a £270,000 home.
Since late 2021, when the base rate stood at just 0.1% in December of that year, their repayments will have jumped by £529 a month.
But there are regional variations.
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In London, another 0.25% rate rise will add £61 to monthly mortgage repayments and mean a typical borrower will be paying £1,017 a month more than in late 2021.
In the South East, monthly mortgage rates could rise by £42, compared to £22 in Yorkshire and Humber.
The Bank of England has been raising interest rates to try and combat inflation.
By raising interest rates, the theory is that people spend less, demand goes down and then this should mean inflation drops.
Inflation peaked at a 41-year high of 11.1% in October 2022 but is gradually coming down thanks to energy prices dropping - although it remains way above the 2% target set by the Bank of England.
If you have a tracker mortgage, this will move in line with the base rate - so these become more expensive when the base rate goes up.
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Standard variable rate (SVR) mortgages normally go up too - but it is down to your lender to pass on any rises.
You'll usually be on an SVR type mortgage deal after your fix or tracker rate ends.
If you have a fixed-rate mortgage, your rate won't change while you're still in your current deal.
However, you will likely pay more now when you come to remortgage due to how much rates have risen over the last year.
About 1.5 million households are set to come off fixed mortgage deals this year and face a sharp rise in their monthly repayments.
