On a £100,000 salary, you can typically borrow up to ££450,000 and buy a home worth around ££500,000 with a 10% deposit. This uses the standard 4.5x income multiple that most high street lenders apply. Some lenders go higher, and a joint mortgage with a partner significantly increases your purchasing power.
What Can You Borrow on £100,000?
| Income multiple | Maximum borrowing |
|---|---|
| 4x (cautious lenders) | £400,000 |
| 4.5x (standard) | £450,000 |
| 5x (some lenders) | £500,000 |
| 5.5x (specialist / professional lenders) | £550,000 |
The income multiple is the starting point. Lenders also conduct affordability stress tests — checking you could still afford repayments if interest rates rose to 6–7%. Your outgoings (loans, credit cards, childcare) reduce your borrowing capacity pound for pound.
What Property Can You Afford?
These figures assume you are the sole buyer on a £100,000 salary, borrowing ££450,000.
| Deposit | Property value you can reach | Monthly payment (4.5%, 25yr) |
|---|---|---|
| 5% deposit | £473,684 | £2,501 |
| 10% deposit | £500,000 | £2,501 |
| 15% deposit | £529,411 | £2,501 |
| 20% deposit | £562,500 | £2,501 |
| 25% deposit | £600,000 | £2,501 |
Note: deposit percentage changes the property value you can buy but not the loan amount (££450,000). A larger deposit reduces the LTV, which typically improves the interest rate you are offered.
Worked Example
Single buyer on £100,000: Takes home approximately ££5,713 per month after tax and NI. Borrowing ££450,000 at 4.5% over 25 years means a monthly payment of £2,501. This is 44% of take-home pay — a significant proportion of take-home pay, requiring careful budgeting. With a 10% deposit of £50,000, they could buy a £500,000 property.
Is £100,000 Enough to Buy a Home Alone?
| Region | Typical house price (2026) | Affordable on £100,000? |
|---|---|---|
| North East England | £165,000 | ✅ Yes — well within reach |
| Yorkshire & Humber | £210,000 | ✅ Yes |
| East Midlands | £245,000 | ✅ Yes |
| West Midlands | £260,000 | ✅ Yes |
| East of England | £335,000 | ✅ Yes |
| South West | £310,000 | ✅ Yes |
| London | £530,000 | ❌ Out of reach alone — joint income or significant deposit needed |
| South East | £390,000 | ✅ Yes |
| Scotland | £190,000 | ✅ Yes |
House prices are approximate regional averages (Land Registry, 2025 Q4). They vary significantly within regions.
Joint Mortgage on £100,000 + Partner Income
Adding a second income dramatically increases your purchasing power.
| Partner salary | Combined income | Max borrowing (4.5x) | Property value (10% dep) |
|---|---|---|---|
| £100,000 (same as you) | £200,000 | £900,000 | £1,000,000 |
| £75,000 | £175,000 | £787,500 | £875,000 |
| £125,000 | £225,000 | £1,012,500 | £1,125,000 |
Government Schemes That Can Help
- Mortgage Guarantee Scheme — enables 95% LTV mortgages; reduces the deposit needed
- Shared Ownership — buy 25–75% of a property, pay rent on the remainder; lower mortgage needed
- First Homes scheme — first-time buyers can buy new-build homes at 30–50% discount in some areas
- Lifetime ISA — save up to £4,000/year, government adds 25% (max £1,000/year) toward your first home
What You Need to Save
| Deposit % | Deposit amount (on £500,000 property) | Stamp duty | Solicitor fees | Total needed |
|---|---|---|---|---|
| 5% | £25,000 | £15,000 | ~£2,000 | ~£42,000 |
| 10% | £50,000 | £15,000 | ~£2,000 | ~£67,000 |
Stamp duty shown is for a standard buyer. First-time buyers pay less — see the stamp duty guide UK.
For more on the buying process, see the first-time buyer guide UK, how much deposit you need, and mortgage on your salary explained.