How Much Deposit for a £350,000 House UK (2026 Guide)

For a £350,000 house, you’ll need a minimum deposit of £17,500 (5%), though £35,000-£70,000 (10-20%) is recommended.

Deposit Options for £350K House

Deposit % Amount Mortgage Best Rate Tier
5% £17,500 £332,500 Higher rates (~5.5%)
10% £35,000 £315,000 Good rates (~4.5%)
15% £52,500 £297,500 Better rates (~4.2%)
20% £70,000 £280,000 Best rates (~4.0%)

Monthly Payments by Deposit Size

Deposit Mortgage Monthly Payment (25yr) Rate
5% (£17.5K) £332,500 £2,047 5.5%
10% (£35K) £315,000 £1,754 4.5%
15% (£52.5K) £297,500 £1,610 4.2%
20% (£70K) £280,000 £1,479 4.0%

A 20% deposit saves £568/month compared to 5%.

Total Upfront Costs

Cost 5% Deposit 10% Deposit 20% Deposit
Deposit £17,500 £35,000 £70,000
Stamp duty (FTB) £2,500 £2,500 £2,500
Stamp duty (mover) £7,500 £7,500 £7,500
Solicitor £1,800 £1,800 £1,800
Survey £600 £600 £600
Arrangement fee £999 £999 £999
FTB Total £23,399 £40,899 £75,899

Income Required

Deposit % Mortgage Income Needed (4.5x)
5% £332,500 £73,889
10% £315,000 £70,000
15% £297,500 £66,111
20% £280,000 £62,222

Saving for Your Deposit

Monthly Savings Time to £35K Time to £70K
£500 5.8 years 11.7 years
£800 3.6 years 7.3 years
£1,000 2.9 years 5.8 years
£1,500 1.9 years 3.9 years

Maximum Lifetime ISA bonus: £33,000 (33 years of £4K contributions from age 18-50).

Cost of Waiting to Save More

Should you wait to save a bigger deposit?

Scenario Buy Now (10%) Wait 2 Years (20%)
House price (3% growth) £350,000 £371,203
Deposit needed £35,000 £74,241
Monthly payment £1,754 £1,566
2 years rent paid £0 £28,800
Equity built (2 yrs) £19,200 £0

Often buying sooner with 10% beats waiting for 20%.

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