UK Mortgage Deposit 2026: How Much?

The Minimum Deposit: 5% Is Possible, 10% Is Standard

Technically, you can buy a UK home with a 5% deposit. Several lenders offer 95% loan-to-value (LTV) mortgages, and first-time buyer schemes have kept this part of the market alive. But "possible" and "sensible" are different things: at 95% LTV you face the highest interest rates, the strictest affordability checks, and almost no room for error if prices dip.

In practice, most buyers aim for at least 10%. At 90% LTV the choice of lenders and deals widens considerably, rates drop noticeably, and your application looks far stronger. If you can stretch to 15%, you enter genuinely competitive territory.

Why Your Deposit Size Changes Your Interest Rate

UK mortgage pricing is organised in LTV bands - typically 95%, 90%, 85%, 80%, 75% and 60%. Each step down usually knocks a meaningful chunk off the rate. The difference between a 95% LTV deal and a 75% LTV deal can easily be 1% or more, which on a £250,000 mortgage is well over £100 a month.

This is why two buyers with identical incomes can be offered very different deals. Lenders see a bigger deposit as lower risk: you have more equity cushioning them against price falls, and the data says you are less likely to default. Saving an extra 5% deposit can pay for itself many times over through a cheaper rate.

LTV Bands on a £250,000 Home: October 2026

Deposit required and approximate average two-year fixed rate per band, October 2026. Rates are approximate market averages (Moneyfacts and Rightmove trackers, early October 2026); your offer depends on lender, credit record, and fees.

95% LTV: £12,500 deposit, around 6.1%. 90% LTV: £25,000 deposit, around 5.9%. 85% LTV: £37,500 deposit, around 5.7%. 80% LTV: £50,000 deposit, around 5.6%. 75% LTV: £62,500 deposit, around 5.4%. 60% LTV: £100,000 deposit, around 5.2%.

The jump from 95% to 90% is the single most valuable 5% you will ever save: it typically cuts the rate by around 0.2-0.3% and hugely widens lender choice. After 80%, each extra band buys you less, which is why stretching from 80% to 75% matters less than escaping 95%.

What Deposit Gets You the Best Rates?

The headline "best buy" rates you see advertised are usually reserved for 60% LTV - a 40% deposit. Few first-time buyers get there. The realistic sweet spot for most buyers is 75-80% LTV (a 20-25% deposit), where rates are close to the best available without requiring an enormous lump sum.

Do the maths on your own situation: sometimes waiting six months to move from 90% to 85% LTV saves more in interest than the extra rent you pay while saving. Our UK mortgage calculator lets you compare monthly payments at different loan sizes to find your own tipping point.

• Compare payments at different LTVs

Remember: Deposit Is Not Your Only Upfront Cost

A classic first-time buyer mistake is spending every penny on the deposit and forgetting the rest. On top of your deposit you will typically need: stamp duty (unless fully covered by first-time buyer relief), solicitor/conveyancing fees (£1,000-£2,000), a mortgage arrangement fee (often £999, sometimes added to the loan), a survey (£400-£1,500), and moving costs.

Lenders also want to see that you are not left with zero savings after completion - a small emergency buffer strengthens your application and protects you. Budget your deposit plus at least £5,000-£8,000 for costs and a cushion, more in London and the South East.

Worked Example: Total Upfront Cost on a £250,000 First Home

Deposit (10%): £25,000. Stamp duty: £0, covered by first-time buyer relief (nothing due under £300,000 since April 2025). Conveyancing: around £1,500. Survey: around £500. Mortgage arrangement fee: £999 (often added to the loan, but budget it). Moving and setup: around £800.

Total cash needed: about £28,800, plus an emergency buffer you do not touch. The deposit is only 87% of the money you need on day one, which is why buyers who save 'exactly the deposit' come up short at exchange.

Practical Ways to Reach Your Deposit Target Faster

If you are saving from scratch, a Lifetime ISA is the single most effective tool for first-time buyers: the government adds 25% to what you save, up to £1,000 of bonus per year. On a £20,000 deposit saving effort, that is £4,000-£5,000 of free money - but the money must go towards a first home (or be left until age 60) or you face a withdrawal penalty.

The Lifetime ISA numbers for 2026: contribute up to £4,000 per tax year and the government adds 25%, up to £1,000 of bonus. The account must be open 12 months before you use it toward a home, the property must cost £450,000 or less, and withdrawing for anything else triggers a 25% penalty that can eat into your own contributions. A couple buying together can each hold one, doubling the bonus to £2,000 a year.

Beyond that, the unglamorous truth applies: automate a fixed monthly transfer on payday, cut the three biggest variable expenses (for most people: eating out, subscriptions, and car costs), and consider whether a cheaper rental for 12-18 months could accelerate you by a full LTV band. Time the market less, and time your LTV band more.

Sources

The figures and policy details in this article come from the following primary sources, checked at the time of writing.

• Bank of England official Bank Rate
• HMRC first-time buyers' relief manual (SDLT thresholds)
• Rightmove mortgage tracker (via Oportfolio), October 2026