How to Save for a House Deposit UK

How much deposit do you need to buy a house?

The minimum deposit most UK mortgage lenders will accept is 5% of the property price, though putting down more will unlock significantly better interest rates. On a £250,000 home, a 5% deposit is £12,500, while a 10% deposit is £25,000 and a 15% deposit is £37,500.

Lenders group mortgage products into loan-to-value (LTV) bands. The biggest rate improvements typically come at the 90%, 85%, 80%, and 75% LTV thresholds. Moving from a 95% LTV to a 90% LTV mortgage can reduce your interest rate by 0.5–1.0 percentage points, saving thousands over a five-year fixed term.

Beyond the deposit itself, you need to budget for additional purchase costs: stamp duty (none on the first £250,000 for first-time buyers up to £425,000), solicitor fees (£1,000–£2,500), survey costs (£300–£1,500), and moving expenses. A realistic total savings target is typically your deposit plus £3,000–£5,000 for these extras.

Lifetime ISA – the government boost for first-time buyers

The Lifetime ISA (LISA) is one of the most powerful savings tools available to first-time buyers under 40. You can save up to £4,000 per tax year and the government adds a 25% bonus — that is a free £1,000 per year. Over several years of saving, this bonus adds up substantially.

You can open a cash LISA or a stocks and shares LISA. If you are saving for less than five years, a cash LISA is usually safer. For longer time horizons, a stocks and shares LISA may deliver higher returns, though the value can fall as well as rise.

There are important restrictions to know. The property must cost £450,000 or less, you must be a first-time buyer, and you must have held the LISA for at least 12 months before using it. If you withdraw for any purpose other than buying your first home or retirement after 60, you face a 25% government penalty — which actually means you lose more than just the bonus.

Practical strategies to save faster

Building a deposit requires discipline, but several proven strategies can accelerate the process. The most effective is paying yourself first: set up a standing order on payday to transfer a fixed amount into a dedicated savings account before you have a chance to spend it.

Consider these approaches to boost your savings rate:

• Track your spending for one month to identify where money leaks out — subscription services, takeaways, and impulse purchases often add up to £200–£400 per month
• Reduce your biggest costs first: switching energy provider, negotiating rent, or downsizing your car saves far more than cutting small luxuries
• Use a savings challenge: the 1p challenge (saving 1p on day one, 2p on day two, etc.) builds to over £667 in a year with minimal pain
• Bank any windfalls: tax refunds, work bonuses, birthday money, and pay rises should go straight to your deposit fund

If you earn £30,000 after tax and can save 20% of your income, you would save £6,000 per year — enough for a 10% deposit on a £250,000 property in just over four years, plus LISA bonuses on top.

Where to keep your deposit savings

Your deposit fund should be held somewhere safe and accessible. The best options for most savers are easy-access savings accounts or fixed-rate bonds if you know your purchase timeline. Regular saver accounts from high-street banks often pay the highest rates but limit monthly deposits to £250–£500.

Avoid putting deposit savings into the stock market unless your time horizon is at least five years. Markets can drop 20–30% in a single year, and if that coincides with when you want to buy, you could be left significantly short.

Make sure your savings are protected by the Financial Services Compensation Scheme (FSCS), which covers up to £85,000 per person per banking licence. If your deposit exceeds this amount, spread it across institutions with different banking licences.

Government schemes to help you buy

Several government-backed programmes exist to help first-time buyers get on the property ladder with a smaller deposit:

• First Homes scheme: offers new-build properties at a discount of 30–50% off market value, with price caps of £250,000 (£420,000 in London) after the discount
• Shared Ownership: buy a share of 25–75% of a property and pay rent on the remainder. You only need a deposit on the share you are buying
• Right to Buy: council tenants may qualify for discounts of up to £87,200 (or £116,200 in London) on their council home
• Mortgage Guarantee Scheme: encourages lenders to offer 95% LTV mortgages with a government-backed guarantee

Each scheme has specific eligibility criteria, so research which ones apply to your circumstances. A mortgage broker can explain which options are available in your area and help you find lenders who participate in these programmes.

Building your deposit as a couple

Buying as a couple effectively doubles your saving power, but it introduces additional considerations. Both applicants' credit histories will be assessed by lenders, and you will need to decide whether to buy as joint tenants (equal shares, automatic inheritance) or tenants in common (defined shares, flexible inheritance).

If one partner has a larger deposit, a declaration of trust drawn up by a solicitor can protect unequal contributions. This document records who put in what amount and how the proceeds should be split if you sell.

When calculating how much you can borrow together, most lenders will consider your combined income. A couple each earning £30,000 could potentially borrow £270,000 at a 4.5x income multiple, compared to just £135,000 on a single income.

Common mistakes that delay your purchase

Many aspiring homeowners unknowingly sabotage their mortgage chances while saving. Avoid these pitfalls: missing bill payments (even a single missed payment can stay on your credit file for six years), taking on new credit in the six months before applying, gambling transactions on bank statements, and using your deposit savings to cover everyday spending.

Start preparing your credit file at least 12 months before you plan to apply. Register on the electoral roll, check your credit reports with all three agencies (Experian, Equifax, and TransUnion), and dispute any errors you find. Close unused credit accounts and keep credit card utilisation below 30% of your limit.

Get expert help with your first home purchase

A mortgage broker can help you work out exactly how much deposit you need, which government schemes you qualify for, and which lenders offer the best rates for your circumstances. Many first-time buyer mortgages have specific criteria that a broker can navigate on your behalf. Find a specialist first-time buyer mortgage broker through Nesto — matching is free and takes under two minutes.