£180,000 mortgage: monthly payments

By The PocketSums team. Updated 30 September 2026. How we calculate

Borrowing £180,000? At 4.5% over 25 years you would pay £1,000.50 a month. Every rate and term is compared below.

At 4.5% over 25 years
£1,001 a month
Total interest
£120,150
Income needed (4.5x)
£40,000
Overpay £90 a month
save £19,028
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Monthly payment£1,000.50a month

Borrowing £180,000 (90% loan to value). Total repaid £300,150, of which £120,150 is interest.

A £180,000 repayment mortgage at 4.5% over 25 years costs £1,000.50 a month. You would repay £300,150 in total, of which £120,150 is interest.

Monthly payments on £180,000 by rate and term

Rate 20 years 25 years 30 years 35 years
3.5% £1,044 £901 £808 £744
4% £1,091 £950 £859 £797
4.5% £1,139 £1,001 £912 £852
5% £1,188 £1,052 £966 £908
5.5% £1,238 £1,105 £1,022 £967
6% £1,290 £1,160 £1,079 £1,026

How £180,000 is paid off over 25 years

£0k£50k£100k£150k£200k0y5y10y15y20y25y
  • Balance still owed
  • Interest paid so far
At 4.5%. Interest is heaviest in the early years, when the balance is highest.

Total interest on £180,000 by term

  1. 20 years£93,305 (£1,139 a month)
  2. 25 years£120,150 (£1,001 a month)
  3. 30 years£148,331 (£912 a month)
  4. 35 years£177,781 (£852 a month)

A longer term lowers the monthly payment but adds interest. Stretching from 25 to 35 years saves £149 a month and costs £57,631 more overall.

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Questions people ask

What are the monthly payments on a £180,000 mortgage?

£1,000.50 a month on a 25 year repayment mortgage at 4.5%. At 4% it is £950.11 and at 5% it is £1,052.26. Interest only at 4.5% would be £675.00.

What salary do I need for a £180,000 mortgage?

At the usual 4.5 times income, about £40,000 for a single buyer or a joint household income. Some lenders go to 5 or 5.5 times, which would need around £32,727.

How much does overpaying a £180,000 mortgage save?

Paying £90 extra a month at 4.5% clears it about 3 years 6 months early and saves roughly £19,028 in interest. Check your lender's overpayment limit, often 10% a year on fixed deals.