Nearly four out of five UK adults say saving a deposit is one of the biggest barriers to buying a home, according to recent research. That figure tells you something important: the problem isn’t just house prices — it’s knowing which financial route actually works for your situation. I’ve been writing about property finance for years, and the question I hear most often isn’t “how much do I need?” but “which option is right for me?” There are more ways to pay for a home now than there were a decade ago, but that choice brings its own confusion. Here’s what you actually need to know.
If you’re starting to look at properties, the first thing to sort out is how you’ll pay. That doesn’t just mean the mortgage — it means the deposit, the scheme you might qualify for, and the type of loan that fits your income and plans. Getting that wrong at the start can cost you thousands or delay your purchase by months. A property lawyer can help you understand the legal side of whatever route you choose, but the financial decision is yours to make. Let’s break down the real options.
How property financing actually works for buyers
The core idea is simple: you pay a deposit upfront, then borrow the rest and repay it over time. But the details matter more than the concept. Most mortgages run for 25 years, and the type you choose affects how much you pay each month and how much you owe in total. A key factor when buying a home is matching the mortgage type to your financial stability. If you need predictable payments, a fixed-rate deal is usually the safer bet. If you can handle some fluctuation, a tracker or variable rate might save you money when rates are low.
What I’d do in your shoes: work out your maximum monthly payment first, then look at what deposit you can realistically save. That order stops you falling in love with a property you can’t afford to finance. Most lenders will lend between 4 and 5.5 times your annual income, so a single earner on £40,000 might get a mortgage of £160,000 to £220,000. Add your deposit to that, and you have your budget.
Why the right payment option changes your buying power
Choosing the wrong financing route doesn’t just cost you more — it can stop you buying altogether. The housing affordability index for first-time buyers shows that regional price differences mean the same income goes much further in the North than in London. A buyer in the South East might need a 40% deposit to afford a home on a single salary, while someone in the North West could manage with 5% under a government scheme.
Take a concrete example. If you’re buying a £250,000 home with a 5% deposit (£12,500) under the Mortgage Guarantee Scheme, you’d borrow £237,500. At a fixed rate of 4%, your monthly repayment over 25 years would be roughly £1,250. If you instead saved a 10% deposit (£25,000), your LTV drops to 90%, and you might get a rate of 3.5% — bringing your monthly payment down to about £1,125. That £125 difference adds up to £1,500 a year, or £37,500 over the full term. The trade-off is that saving that extra £12,500 might take you years.
What I notice is that many buyers focus only on the monthly payment and ignore the total cost. A lower deposit means a higher LTV, which means a higher interest rate. Over 25 years, that difference can be tens of thousands of pounds. If you can wait an extra year to save a bigger deposit, you almost certainly should. But if renting is costing you more than the mortgage would, the 5% route makes sense.
Where buyers get tripped up
Most mistakes come from not understanding how the different schemes and mortgage types interact with your personal circumstances. Here are the four most common ones I see.
Assuming you need a 20% deposit
Many first-time buyers think they need a 20% deposit because that’s what older relatives saved. That’s no longer true. Government schemes like the Mortgage Guarantee Scheme and shared ownership allow deposits as low as 5%. The home loan co-signer requirements in the UK also mean a guarantor mortgage could let you borrow 100% if a family member puts up security. The mistake is ruling yourself out before you check what’s available.
Ignoring the Help to Buy Equity Loan deadline
The Help to Buy Equity Loan scheme (2021–2023) closed to new applicants on 31 October 2022 and ended entirely on 31 March 2023. I still meet people who ask about it. That scheme is gone. The replacement is the Mortgage Guarantee Scheme, which is permanent and works differently — it doesn’t give you a loan; it encourages lenders to offer 95% mortgages. If you’re relying on an equity loan, you’re planning for a scheme that no longer exists.
Overlooking the Lifetime ISA bonus
You can save up to £4,000 a year into a Lifetime ISA, and the government adds a 25% bonus — that’s up to £1,000 free money each year. The catch is you can only use it for your first home or retirement, and there’s a penalty if you withdraw for anything else. Many buyers miss this because they focus on the mortgage rather than the savings side. If you’re a first-time buyer aged 18 to 39, not using a Lifetime ISA is leaving free cash on the table.
Misunderstanding shared ownership costs
Shared ownership lets you buy a share (10%–75%) and pay rent on the rest. Your deposit is 5% of the share price, not the full property value. That sounds great, but the rent plus mortgage plus service charges can add up to more than a full mortgage on a cheaper property. The realistic UK home buying guide I wrote covers why total monthly costs matter more than the deposit figure. Always calculate the combined payment before committing.
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| Scheme | Minimum deposit | Key feature |
|---|---|---|
| Mortgage Guarantee Scheme | 5% | Encourages lenders to offer 95% mortgages; permanent from July 2025 |
| Shared Ownership | 5% of share | Buy 10%–75%; pay rent on the rest |
| First Homes Scheme | 5% | At least 30% discount for first-time buyers and key workers |
| Lifetime ISA | N/A (savings tool) | 25% government bonus on up to £4,000 saved per year |
What I’d do: check your eligibility for every scheme before you look at properties. The First Homes Scheme, for example, offers a discount of at least 30% on new-build homes for local first-time buyers and key workers. If you qualify, that discount changes your budget more than any mortgage rate ever will.
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How to choose the right payment option for your purchase
This section walks you through the practical steps. Each subsection covers a distinct action you can take right now.
Calculate your true buying power
Start with your income, not the property price. Most lenders offer 4 to 5.5 times your annual salary. If you earn £35,000 alone, that’s £140,000 to £192,500. Add a 5% deposit of £7,000 to £9,625, and your maximum budget is roughly £147,000 to £202,000. If you’re buying with a partner on a joint income of £60,000, you could borrow £240,000 to £330,000. Use an online affordability calculator from a major lender — they’re free and give you a realistic number. Don’t guess.
Compare fixed-rate, tracker, and variable mortgages
Fixed-rate mortgages lock your interest rate for 2 to 5 years. In 2026, rates could range between 3% and 5%, depending on your deposit size and credit score. Tracker mortgages follow the Bank of England base rate plus a set margin — if the base rate drops, your payment drops. Variable-rate mortgages (SVR) are set by the lender and can change at any time. For most first-time buyers, a 2-year or 5-year fixed rate gives the stability you need while you adjust to homeownership. If you’re confident rates will fall, a tracker could save you money, but it’s a bet.
Check your eligibility for government schemes
The Mortgage Guarantee Scheme is open to all buyers, not just first-timers, and works through participating lenders. Shared Ownership has income limits and is usually for households earning under £80,000 (or £80,000 in London, though this may change). The First Homes Scheme is for local first-time buyers and key workers — check with your local council. The Lifetime ISA requires you to be 18–39 and the account must be open at least 12 months before you use it. Apply for a mortgage in principle through a broker who knows these schemes; they’ll tell you which ones you qualify for.
Consider specialist options for your situation
If you’re self-employed, a guarantor mortgage might help — a family member uses their property or savings as security, potentially allowing 100% financing. If you’re buying to let, you’ll need a buy-to-let mortgage with a deposit of at least 25% and rental income covering 125% to 145% of the monthly payment. If you’re over 55 and already own a home, equity release lets you access cash without moving, but it reduces your inheritance. Each of these has specific rules, so speak to a broker who specialises in your buyer profile.
- 1Get a mortgage in principleThis is a free, no-obligation document from a lender showing how much they’d lend you. It takes 15 minutes online and tells sellers you’re serious.
- 2Open a Lifetime ISA if eligibleYou can deposit up to £4,000 per year and get a 25% government bonus. The account must be open for 12 months before you can use the money for a home.
- 3Compare mortgage deals with a brokerA whole-of-market broker can show you deals from dozens of lenders, including those offering 95% mortgages under the Mortgage Guarantee Scheme. Their fee is often £500 or less and can save you thousands.
- 4Apply for the scheme you qualify forOnce you have an offer accepted, your solicitor handles the scheme paperwork. For shared ownership, you apply through the housing association. For the Mortgage Guarantee Scheme, your lender handles it.
What I’d do: speak to a broker before you view a single property. They’ll tell you exactly what you can borrow, which schemes you qualify for, and what your monthly payment will look like. That information turns house hunting from a guessing game into a plan. If you’re unsure about the legal side of any scheme, a real estate lawyer can review the terms before you sign anything.
Frequently asked questions
Can I use a Lifetime ISA and the Mortgage Guarantee Scheme together? ▾
What happens if I can’t sell my shared ownership property? ▾
Is the First Homes Scheme available outside England? ▾
Do I pay stamp duty on a shared ownership property? ▾
Can I get a buy-to-let mortgage as a first-time buyer? ▾
What if my credit score is poor? ▾
Sources and Further Reading
Understanding capital gains tax when buying a house — A practical look at how property taxes affect your purchase, especially if you’re selling another home at the same time.
Understanding real estate contingency clauses when buying — What happens if your mortgage falls through or the survey reveals problems. Essential reading before you make an offer.
Which finance option is for me? A complete 2026 guide to property financing in the UK. Sellto.co.uk, 2025.
Government schemes to help you buy a home. HomeOwners Alliance, 2025.
Mortgage options for first-time buyers in the UK in 2026. Ellen Dewitt Real Estate, 2025.
