How Much Deposit Do You Need to Buy a House in the UK in 2026?
Minimum deposit is 5% but most lenders prefer 10%. On the average UK house price of £285,000, that's £14,250 to £28,500. Here's how deposit size affects rates, SDLT and monthly costs.
How much does a house deposit cost in 2026?
The UK average house price in May 2026 sits at approximately £285,000 (Nationwide House Price Index) to £297,000 (Halifax). Here's what the key deposit percentages look like in cash terms:
| Deposit % | On £270k property | On £285k property | On £300k property |
|---|---|---|---|
| 5% | £13,500 | £14,250 | £15,000 |
| 10% | £27,000 | £28,500 | £30,000 |
| 15% | £40,500 | £42,750 | £45,000 |
| 20% | £54,000 | £57,000 | £60,000 |
| 25% | £67,500 | £71,250 | £75,000 |
For most first-time buyers, the realistic target range is 5–15%. Saving beyond 15% is beneficial in rate terms, but the marginal improvement shrinks as you go higher — the big gains happen between 5% and 10%, and again between 10% and 15%.
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Project how long it takes to save your depositThe minimum: 5% deposit and what it gets you
The absolute minimum deposit accepted by UK mortgage lenders in 2026 is 5% of the purchase price. This is a 95% LTV (Loan-to-Value) mortgage.
These products are available through major lenders — including Halifax, NatWest, Nationwide, Santander and Barclays — partly enabled by the government's Mortgage Guarantee Scheme (MGS), extended to June 2027.
The trade-offs with a 5% deposit:
- Higher interest rate — typically 5.5–6.0%+ at 95% LTV vs 4.3–4.7% at 90% LTV in 2026
- Fewer lenders — not all lenders participate in MGS or offer 95% LTV products
- Greater negative equity risk — a 5% fall in house prices would put you in negative equity
- Stricter criteria — often requires stronger credit history and higher income ratios
Worked example: 5% vs 10% deposit on a £285,000 property
| Scenario | Deposit | Mortgage | Rate (est.) | Monthly payment | Annual cost |
|---|---|---|---|---|---|
| 5% deposit | £14,250 | £270,750 | 5.7% | £1,705 | £20,460 |
| 10% deposit | £28,500 | £256,500 | 4.7% | £1,435 | £17,220 |
| Difference | £14,250 more cash | £14,250 less debt | -1.0% | -£270/mo | -£3,240/yr |
The extra £14,250 in deposit saves you £270/month. That's £3,240/year, or £81,000 over 25 years in combined reduced interest and lower payments. The 10% deposit pays back the extra cash required in just over 4 years — then you're ahead financially for the remaining 21 years of the mortgage.
How deposit tiers affect your interest rate
UK mortgage rates in 2026 are tiered by LTV bands. Here's the rate landscape for a 25-year repayment mortgage on a residential purchase:
| LTV band | Deposit % | Estimated rate (5yr fix, May 2026) | Monthly payment on £270k |
|---|---|---|---|
| 95% LTV | 5% | ~5.7% | ~£1,693 |
| 90% LTV | 10% | ~4.7% | ~£1,503 |
| 85% LTV | 15% | ~4.5% | ~£1,473 |
| 80% LTV | 20% | ~4.3% | ~£1,443 |
| 75% LTV | 25% | ~4.1% | ~£1,414 |
| 60% LTV | 40% | ~3.9% | ~£1,386 |
The steepest rate drop is between 95% and 90% LTV. After that, improvements are more gradual. This means if you're agonising between a 5% and 10% deposit — save more and go for 10% if at all possible. The improvement between 10% and 15% is real but smaller.
Stamp duty: what first-time buyers pay in 2026
England first-time buyer SDLT thresholds (from April 2025):
| Purchase price | FTB SDLT | Non-FTB SDLT |
|---|---|---|
| Up to £300,000 | £0 | 0%/2%/5% (£5,000 at £300k) |
| £300,001–£500,000 | 5% on excess above £300k | 5% on excess above £250k |
| Above £500,000 | Standard rates (no FTB relief) | Standard rates |
The FTB nil-rate threshold reverted from £425,000 to £300,000 in April 2025. This means:
- At £285k: FTB pays £0 SDLT. Non-FTB pays £4,250.
- At £310k: FTB pays £500 (5% × £10k above £300k). Non-FTB pays £5,500.
- At £425k: FTB pays £6,250 (5% × £125k). Non-FTB pays £8,750.
For buyers targeting average UK house prices, the FTB relief is highly valuable — and buying at or below £300k (where possible) eliminates stamp duty entirely for first-time buyers.
Scotland (LBTT) and Wales (LTT) have separate thresholds. In Scotland, FTB relief is available on properties up to £175,000. In Wales, the nil-rate threshold is £225,000 with no special FTB relief.
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Calculate stamp duty for your purchaseHow long does it take to save a deposit?
Saving for a deposit is the biggest practical barrier for most buyers. Here are realistic timelines at different savings rates, targeting a 10% deposit of £28,500:
| Monthly saving | Time to £28,500 | If using LISA (£4k/yr + bonus) |
|---|---|---|
| £300 | 7yr 11mo | ~6yr (with £1k/yr LISA bonus) |
| £500 | 4yr 9mo | ~3yr 10mo |
| £750 | 3yr 2mo | ~2yr 8mo |
| £1,000 | 2yr 5mo | ~2yr |
| £1,500 | 1yr 7mo | ~1yr 4mo |
Using the Lifetime ISA
The Lifetime ISA (LISA) remains one of the most powerful tools for first-time buyers in 2026:
- Contribute up to £4,000/year
- Government adds 25% bonus (up to £1,000/year)
- Maximum bonus over saving years: if you open at 18 and buy at 28, that's 10 × £1,000 = £10,000 in free government money
- Property cap: £450,000 — covers average UK prices outside London
- Age rules: open between 18–39; must use for property purchase or retirement (age 60+)
- Penalty for withdrawal: 25% withdrawal charge (net loss of ~6.25% on your savings if you exit for non-qualifying reasons)
Worked LISA example:
Tom opens a LISA at 23. He saves the full £4,000/year for 5 years:
- His contributions: £20,000
- Government bonus: £5,000
- Total LISA pot: £25,000 (plus any investment returns)
- He has £8,500 in a separate cash ISA
- Total deposit: £33,500 — 10.3% on a £325,000 property
This is a realistic first-time buyer journey. The LISA alone funds most of a 10% deposit; a small amount of additional saving bridges the gap.
The total cash you need to buy
The deposit is the largest upfront cost, but not the only one. A realistic first-time buyer cash requirement on a £285,000 property with a 10% deposit:
| Item | Cost |
|---|---|
| Deposit (10%) | £28,500 |
| Stamp duty (FTB, ≤£300k) | £0 |
| Solicitor / conveyancing fees | £1,200–£2,000 |
| Survey (Level 2 Homebuyer Report) | £500–£900 |
| Mortgage arrangement fee (if not added to loan) | £0–£1,500 |
| Mortgage broker fee (if applicable) | £0–£500 |
| Removal costs | £500–£1,500 |
| Buildings insurance (1st year) | £150–£300 |
| Total (excluding mortgage fee) | ~£31,200–£34,200 |
Having a buffer of 2–3% of the purchase price beyond the deposit itself is standard financial advice. Unexpected costs arise in every purchase — survey findings, remedial works, delays requiring bridging costs, and so on.
The total interest cost over 25 years: why deposit size matters so much
Most people focus on the monthly payment. The long-term picture is even more compelling:
Comparing 5% vs 10% vs 20% deposit on a £285,000 property over 25 years:
| Deposit | Mortgage | Rate | Monthly payment | Total paid | Total interest |
|---|---|---|---|---|---|
| 5% (£14,250) | £270,750 | 5.7% | £1,705 | £511,500 | £240,750 |
| 10% (£28,500) | £256,500 | 4.7% | £1,435 | £430,500 | £174,000 |
| 20% (£57,000) | £228,000 | 4.3% | £1,250 | £375,000 | £147,000 |
The difference in total interest between a 5% and 10% deposit: £66,750. Between a 5% and 20% deposit: £93,750.
These are not small amounts. This is why financial advisers consistently say: save as much deposit as you can, as long as you can, before buying — within reason. The catch is that house prices may rise while you save. The calculus is different in a fast-rising market vs a flat one.
Shared Ownership: an alternative for smaller deposits
If 5–10% of full price is beyond reach, Shared Ownership lets you buy 25–75% of a property and pay subsidised rent on the share you don't own. Your deposit is then only 5% of the share you're buying:
Example: A £285,000 flat in Shared Ownership. You buy a 40% share = £114,000. Your deposit: 5% of £114,000 = £5,700. Your mortgage: £108,300. Rent on the remaining 60% share (£171,000) at ~2.5%/year = £356/month.
This is significantly more accessible. The trade-off is the rent, the restrictions on selling, and the complexity of "staircasing" to full ownership over time.
The Mortgage Guarantee Scheme in 2026
Extended to June 2027, the MGS allows lenders to offer 95% LTV mortgages with a government-backed guarantee on the 80–95% portion of the loan. This reduces lender risk and keeps 95% products available even when lenders would otherwise withdraw them.
Eligibility:
- Property price up to £600,000
- Must be a repayment mortgage (not interest-only)
- Residential purchase only (not buy-to-let)
- Must be your primary residence
- No minimum/maximum income requirement
The scheme doesn't cap income or restrict to first-time buyers — though in practice it's most used by FTBs who have the smallest deposits.
Right to Buy and Council tenants
If you're a secure council or social housing tenant, Right to Buy lets you purchase your rented home at a significant discount:
- Maximum discount: £102,400 in London, £87,200 elsewhere
- Discount increases with years of tenancy (minimum 3 years, maximum 70% of property value or the cash cap)
- The discount can serve as your deposit in some cases — many lenders accept RTB discount as a substitute for a cash deposit
This remains one of the most valuable forms of housing subsidy available — though stock is limited and not all properties are eligible.
Mortgage Calculator
Calculate monthly mortgage payments, total interest, and full repayment cost.
Calculate your mortgage repaymentsSources
- Nationwide: House Price Index
- Halifax: House Price Index
- HMRC: Stamp Duty Land Tax — first-time buyers
- gov.uk: Mortgage Guarantee Scheme
- gov.uk: Lifetime ISA
- gov.uk: Shared Ownership scheme
- gov.uk: Right to Buy
Frequently asked questions
What is the minimum deposit needed to buy a house in the UK?
The minimum deposit is 5% of the property purchase price. On the average UK house price of around £285,000 (Nationwide, May 2026), that's £14,250. You can access 95% LTV mortgages through major lenders including Halifax, NatWest, Nationwide and Santander — partly supported by the Mortgage Guarantee Scheme, extended to June 2027.
How does deposit size affect my mortgage interest rate?
Larger deposits unlock lower Loan-to-Value (LTV) ratios, which typically come with better interest rates. In 2026, the difference between a 5% deposit (95% LTV) and a 10% deposit (90% LTV) is roughly 0.8–1.0% in interest rate. That rate difference on a £270,000 mortgage translates to around £150–£200/month in repayment savings — or over £45,000 across a 25-year term.
Can I get a mortgage with a 5% deposit in 2026?
Yes. The Mortgage Guarantee Scheme remains available until at least June 2027, enabling mainstream lenders to offer 95% LTV mortgages on properties up to £600,000. You'll typically need a good credit score and the property must be a repayment mortgage on a residential purchase (not buy-to-let or interest-only). Rates are notably higher at 95% LTV than at 90%.
How long will it take to save a house deposit?
At £500/month saving, a 10% deposit of £28,500 takes approximately 4 years 9 months. At £1,000/month, it takes about 2 years 5 months. Using a Lifetime ISA, you can receive a 25% government bonus on up to £4,000/year — effectively saving £5,000/year toward your deposit. The LISA property cap is £450,000, well above average house prices outside London.
Is the Mortgage Guarantee Scheme still available in 2026?
Yes. The UK government extended the Mortgage Guarantee Scheme to June 2027. It enables lenders to offer 95% LTV mortgages with a government-backed guarantee on the portion above 80% LTV. The scheme applies to properties up to £600,000, must be a repayment mortgage, and is not available for buy-to-let or new-build-only schemes (though some lenders accept new builds).
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