Affordability
How Much Can I Borrow With a £X Deposit? UK Mortgage Guide for 2026
If you’ve been saving for a deposit and want to know what it actually unlocks (what size mortgage you can get, what property price you can realistically afford) this guide gives you straight answers. We work through the numbers across the most common deposit sizes, explain the lender criteria that determine your borrowing power, and show you how to maximise what you can buy.
The figures use representative 2026 UK lending criteria. Your actual borrowing capacity depends on income, credit profile, monthly outgoings and lender, so use these as planning numbers, not approvals.
In this guide
- How lenders decide what you can borrow
- Maximum borrowing by deposit size
- Worked examples: £20k to £200k deposits
- How your salary affects what you can borrow
- Why loan-to-value matters more than the deposit itself
- How to stretch your borrowing further
- What if your deposit isn’t quite enough?
- Frequently asked questions
How lenders decide what you can borrow
Two factors determine the size of mortgage you can get: your deposit and your affordability. The smaller of the two ultimately caps what you can buy.
Deposit sets the maximum loan-to-value (LTV) the lender will offer. A 5% deposit means a 95% mortgage; a 25% deposit means a 75% mortgage. Higher LTVs are more expensive and more restricted.
Affordability is what the lender thinks you can repay each month. They typically apply an income multiple (usually 4 to 4.5x your annual income) and stress-test it against a higher interest rate. Your monthly outgoings (credit commitments, childcare, regular bills) all reduce what they’ll lend.
The maximum mortgage you can get is whichever is lower:
- The maximum LTV your deposit allows
- The maximum amount your income supports
Most buyers are capped by income, not deposit, which is why understanding both sides matters.
Quick estimate: Try our mortgage affordability calculator for an instant figure based on your income and deposit.
Maximum borrowing by deposit size
The table below shows the maximum property price you could potentially buy at different deposit and LTV levels. Whether you actually qualify depends on income, covered in the next section.
| Deposit | At 95% LTV (5% deposit) | At 90% LTV (10% deposit) | At 85% LTV (15% deposit) | At 75% LTV (25% deposit) |
|---|---|---|---|---|
| £10,000 | £200,000 | £100,000 | £67,000 | £40,000 |
| £20,000 | £400,000 | £200,000 | £133,000 | £80,000 |
| £30,000 | £600,000 | £300,000 | £200,000 | £120,000 |
| £40,000 | £800,000 | £400,000 | £267,000 | £160,000 |
| £50,000 | £1,000,000 | £500,000 | £333,000 | £200,000 |
| £75,000 | £1,500,000 | £750,000 | £500,000 | £300,000 |
| £100,000 | £2,000,000 | £1,000,000 | £667,000 | £400,000 |
| £150,000 | £3,000,000 | £1,500,000 | £1,000,000 | £600,000 |
| £200,000 | £4,000,000 | £2,000,000 | £1,333,000 | £800,000 |
These are theoretical maximums based on deposit alone. Your actual purchase price will be capped by the lower of these figures or what your income supports.
Worked examples
£20,000 deposit
A £20,000 deposit puts you on the property ladder, but most likely at higher LTV bands where rates are less competitive.
- At 95% LTV: Maximum property price £400,000 (mortgage £380,000)
- At 90% LTV: Maximum property price £200,000 (mortgage £180,000)
To support a £380,000 mortgage you’d need a household income of approximately £85,000 to £95,000. For a £180,000 mortgage you’d need around £40,000 to £45,000.
In practice, buyers with a £20k deposit usually buy in the £200,000 to £300,000 range, depending on income.
£50,000 deposit
A £50,000 deposit gets you into more competitive LTV bands and gives you more flexibility.
- At 95% LTV: Maximum property price £1,000,000 (mortgage £950,000)
- At 90% LTV: Maximum property price £500,000 (mortgage £450,000)
- At 85% LTV: Maximum property price £333,000 (mortgage £283,000)
Most buyers with a £50,000 deposit purchase in the £250,000 to £350,000 range, typically with an 85% to 90% LTV mortgage.
£100,000 deposit
A £100,000 deposit unlocks better rate bands and broadens your lender choice considerably.
- At 90% LTV: Maximum property price £1,000,000 (mortgage £900,000)
- At 85% LTV: Maximum property price £667,000 (mortgage £567,000)
- At 75% LTV: Maximum property price £400,000 (mortgage £300,000)
This is a typical deposit size for buyers in the Thames Valley moving up the ladder, often funded by equity from a previous property. Realistic purchase prices sit between £400,000 and £600,000 for most income profiles.
£200,000 deposit
At £200,000 you’re firmly into the better LTV bands and have access to the most competitive rates on the market.
- At 75% LTV: Maximum property price £800,000 (mortgage £600,000)
- At 60% LTV: Maximum property price £500,000 (mortgage £300,000)
Buyers with this level of deposit are usually movers using significant equity, or higher earners targeting larger family homes in places like Marlow, Beaconsfield, Henley or Gerrards Cross. Income requirements at this level are typically £130,000+.
How your salary affects what you can borrow
For most buyers, income is the actual cap on how much they can borrow, not the deposit. Standard lender criteria apply an income multiple, usually somewhere between 4 and 4.5 times your gross annual income.
Here’s a rough guide to maximum borrowing at standard multiples:
| Annual income | Borrowing at 4x | Borrowing at 4.5x | Borrowing at 5x |
|---|---|---|---|
| £30,000 | £120,000 | £135,000 | £150,000 |
| £40,000 | £160,000 | £180,000 | £200,000 |
| £50,000 | £200,000 | £225,000 | £250,000 |
| £60,000 | £240,000 | £270,000 | £300,000 |
| £75,000 | £300,000 | £337,500 | £375,000 |
| £100,000 | £400,000 | £450,000 | £500,000 |
| £150,000 | £600,000 | £675,000 | £750,000 |
For joint applications, lenders typically combine both incomes, though how they weight a second income varies between lenders.
Some lenders will go to 5x or even 5.5x income for higher earners, professionals (doctors, lawyers, accountants) or specific schemes. Identifying which lender will stretch furthest for your profile is one of the main reasons to use a broker.
Why loan-to-value matters
Your LTV (the percentage of the property price you’re borrowing) has a bigger impact on your mortgage cost than most people realise.
Rate bands typically tier at 60%, 75%, 80%, 85%, 90% and 95% LTV. Each band down can save 0.2% to 0.5% on your interest rate. On a £300,000 mortgage over 25 years, a 0.5% rate reduction saves you around £85 per month, which adds up to over £25,000 across the life of the loan.
This is why a slightly larger deposit can be transformative. Going from 90% to 85% LTV (which on a £400,000 property means an extra £20,000 deposit) could save you £15,000+ in interest over the term and give you access to a better range of products.
If you’re close to a band threshold, it’s worth crunching the numbers on whether stretching the deposit a bit further is worthwhile.
How to stretch your borrowing further
If your deposit unlocks a higher purchase price than your income supports, there are several legitimate ways to increase your borrowing capacity:
- Find a higher-multiple lender. Income multiples vary significantly between lenders. Some will go to 5x or 5.5x for the right profile.
- Joint application. Adding a partner’s income usually increases borrowing capacity meaningfully, though lender treatment varies.
- Joint Borrower Sole Proprietor (JBSP). Allows family members to add their income to your application without being on the title deeds. Useful for first-time buyers with parental support.
- Reduce your monthly outgoings. Pay off credit cards, end car finance, cancel unused subscriptions. Lenders factor all of these into affordability.
- Extend the term. A 30 or 35-year term reduces the monthly payment, which can pass affordability where a 25-year term wouldn’t.
- Use a guarantor mortgage. A family member effectively underwrites the loan, allowing higher borrowing or lower deposit.
Each option has trade-offs. A broker can model what’s actually viable for your situation across the lender market.
What if your deposit isn’t quite enough?
Plenty of buyers reach the offer stage and find their deposit doesn’t quite cover what they need, either because the property exceeded their expected budget, or because they hadn’t accounted for stamp duty, legal fees and moving costs.
A few practical options:
- Gifted deposit from family. Fully accepted by all major lenders, provided it’s documented properly and the family member confirms it’s a gift, not a loan.
- First-time buyer schemes. Including the First Homes scheme (30% to 50% discount on selected new builds) and shared ownership.
- 95% LTV mortgages. Widely available again in 2026, though rates are higher than at lower LTVs.
- 5% deposit mortgages with lender-paid mortgage insurance. Some lenders offer these to first-time buyers.
- Wait and save more. Sometimes the right answer, particularly if you’re close to a better rate band.
Not sure which option works for you? Book a free 15-minute consultation and we’ll walk you through realistic options across our 90+ lender panel.
Don’t forget the costs around the deposit
Your deposit isn’t the only upfront cost. When budgeting, factor in:
- Stamp duty. 0% to 12% of the property price, depending on price band and buyer type. See our 2026 stamp duty guide for the rates that apply.
- Solicitor or conveyancer fees. Typically £1,000 to £2,500.
- Survey. £400 to £1,500 depending on level.
- Mortgage product fees. Often £999 to £1,500, sometimes addable to the loan.
- Removal costs. £300 to £2,000+.
- Buildings insurance. Required from completion.
Most buyers underestimate by £5,000 to £10,000. Plan for it before you start viewings.
Frequently asked questions
How much mortgage can I get with a £50,000 deposit? With a £50,000 deposit, most buyers can borrow between £200,000 and £300,000, giving a total purchase price of £250,000 to £350,000. The exact figure depends on your income, outgoings and credit profile. A 95% loan-to-value mortgage would let you buy up to £1,000,000, but you’d need an income to support that level of borrowing.
How much mortgage can I get with a £100,000 deposit? With a £100,000 deposit, you can typically borrow £400,000 to £500,000 if your income supports it, meaning a property purchase between £500,000 and £600,000. With a 90% LTV mortgage you could potentially buy a property worth up to £1,000,000, subject to affordability checks.
How much deposit do I need to buy a house in 2026? The minimum deposit for most UK mortgages is 5% of the property price, though 10% is more common and gets you better rates. For a £250,000 property that’s £12,500 minimum or £25,000 typical. There are also some 100% mortgages available with no deposit, though these are usually limited to specific lender schemes or guarantor mortgages.
Is a bigger deposit always better? Generally yes. A bigger deposit reduces your loan-to-value ratio, which unlocks better interest rates and a wider choice of lenders. The rate bands at 60%, 75%, 80%, 85%, 90% and 95% LTV are all meaningfully different. Pushing your deposit from 10% to 15% can save you tens of thousands in interest over the life of the loan.
Does my deposit need to come from savings? Not entirely. Lenders accept deposits from a range of sources including savings, gifted deposits from family, inheritance, sale of assets, and equity from a previous property. What lenders won’t accept is a deposit funded by an undisclosed loan. All deposit sources need to be disclosed and verified during the application.
Can I borrow more than 4.5x my salary? Standard lender affordability typically caps borrowing at 4 to 4.5 times income, but it’s possible to borrow up to 5 to 5.5 times income with the right lender and circumstances. This usually applies to higher earners (over £75,000), professional roles like doctors and lawyers, or buyers using specialist lenders. A whole-of-market broker can identify which lenders will stretch furthest for your profile.
Want to know exactly what your deposit unlocks?
Book a free, no-obligation chat with one of our independent mortgage advisers. We’ll model your real borrowing capacity across 90+ lenders so you know exactly where you stand before you start viewing properties.
Frequently asked questions
- How much mortgage can I get with a £50,000 deposit?
- With a £50,000 deposit, most buyers can borrow between £200,000 and £300,000, giving a total purchase price of £250,000 to £350,000. The exact figure depends on your income, outgoings and credit profile. A 95% loan-to-value mortgage would let you buy up to £1,000,000, but you'd need an income to support that level of borrowing.
- How much mortgage can I get with a £100,000 deposit?
- With a £100,000 deposit, you can typically borrow £400,000 to £500,000 if your income supports it, meaning a property purchase between £500,000 and £600,000. With a 90% LTV mortgage you could potentially buy a property worth up to £1,000,000, subject to affordability checks.
- How much deposit do I need to buy a house in 2026?
- The minimum deposit for most UK mortgages is 5% of the property price, though 10% is more common and gets you better rates. For a £250,000 property that's £12,500 minimum or £25,000 typical. There are also some 100% mortgages available with no deposit, though these are usually limited to specific lender schemes or guarantor mortgages.
- Is a bigger deposit always better?
- Generally yes. A bigger deposit reduces your loan-to-value ratio, which unlocks better interest rates and a wider choice of lenders. The rate bands at 60%, 75%, 80%, 85%, 90% and 95% LTV are all meaningfully different. Pushing your deposit from 10% to 15% can save you tens of thousands in interest over the life of the loan.
- Does my deposit need to come from savings?
- Not entirely. Lenders accept deposits from a range of sources including savings, gifted deposits from family, inheritance, sale of assets, and equity from a previous property. What lenders won't accept is a deposit funded by an undisclosed loan. All deposit sources need to be disclosed and verified during the application.
- Can I borrow more than 4.5x my salary?
- Standard lender affordability typically caps borrowing at 4 to 4.5 times income, but it's possible to borrow up to 5 to 5.5 times income with the right lender and circumstances. This usually applies to higher earners (over £75,000), professional roles like doctors and lawyers, or buyers using specialist lenders. A whole-of-market broker can identify which lenders will stretch furthest for your profile.
Gaurav Shukla
CEO · CeMAP DipFA
Gaurav has over a decade of experience spanning top brokerages, fintech startups, and wealth management firms. He specialises in high-value mortgages for professionals and athletes, bringing a strategic, client-first approach to every case.
A CeMAP and DipFA qualified adviser, he founded Home Me Mortgages with a simple goal: to make expert mortgage advice genuinely accessible across Berkshire, Buckinghamshire, and London. An avid football fan, you will often find Gaurav at local grounds taking in a game at the weekend.