A £300,000 mortgage typically costs £1,668-£1,842 per month at current rates. Here’s the complete breakdown.
Table of Contents
Monthly Payments by Interest Rate (25-Year Term)
Interest Rate
Monthly Payment
Total Interest
Total Repaid
3.5%
£1,502
£150,479
£450,479
4.0%
£1,584
£175,117
£475,117
4.5%
£1,668
£200,270
£500,270
5.0%
£1,754
£226,145
£526,145
5.5%
£1,842
£252,743
£552,743
6.0%
£1,933
£280,061
£580,061
Monthly Payments by Term Length (at 5%)
Term
Monthly Payment
Total Interest
Total Repaid
15 years
£2,372
£127,159
£427,159
20 years
£1,980
£175,017
£475,017
25 years
£1,754
£226,145
£526,145
30 years
£1,610
£279,679
£579,679
35 years
£1,514
£335,073
£635,073
Income Required for £300K Mortgage
Lending Multiple
Required Income
Joint Income Option
4.0x
£75,000
£37,500 + £37,500
4.5x
£66,667
£33,333 + £33,333
5.0x (with good credit)
£60,000
£30,000 + £30,000
Total Home Buying Costs
For a £300,000 home with 10% deposit (£270K mortgage):
Cost
Amount
Deposit (10%)
£30,000
Stamp duty (first-time buyer)
£0
Stamp duty (home mover)
£5,000
Solicitor fees
£1,800
Survey
£600
Mortgage arrangement fee
£999
Moving costs
£800
FTB total £34,199
Overpayment Impact
Monthly Overpayment
Term Reduction
Interest Saved
£150
4 years 1 month
£40,230
£300
6 years 10 months
£68,450
£500
9 years 8 months
£98,560
Affordability Check
On a £70,000 salary (£4,153/month take-home):
Expense
Amount
% of Income
Mortgage (5%, 25yr)
£1,754
42%
Council Tax
£210
5%
Home insurance
£65
2%
Utilities
£220
5%
Housing total £2,249 54%
This leaves £1,904/month for other expenses — comfortable if no other major debts.
Written by
WealthVieu
WealthVieu researches and writes data-driven personal finance guides using primary sources including the IRS, Bureau of Labor Statistics, Federal Reserve, and Census Bureau.
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