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How Much Can I Borrow? Mortgage Borrowing Calculator
4-4.5x your salary is the UK rule. A £40k salary borrows £160k-£180k; £60k → £240k-£270k. See tables + stress-test factors for single, joint and self-employed.
Last updated: 12 September 2026
How much can I borrow for a mortgage?
Most UK lenders will lend 4 to 4.5 times your gross annual income (the income multiplier). On a £40,000 salary that means roughly £160,000-£180,000; on £60,000 it's £240,000-£270,000. Joint applicants combine incomes before the multiplier — a couple earning £65,000 combined typically borrows £260,000-£292,500.
Your final offer will usually be 10-20% lower once the lender's affordability check deducts your monthly debts (loans, credit cards, car finance, childcare) and stress-tests against a 2-3% interest rate rise. First-time buyers face the same income-multiple rules but get up to £300,000 of stamp duty relief on their purchase.
Use the tables below for quick estimates, then run the calculator to model your exact situation.
How Much Can I Borrow for a Mortgage in 2026?
Most UK lenders use an income multiple of 4 to 4.5 times your gross annual salary as their starting point. For a single person earning £40,000, that means a typical borrowing range of £160,000 to £180,000. However, the final figure depends on much more than just your income.
Lenders must also run an affordability assessment — they check your monthly outgoings (loans, credit cards, car finance, childcare), factor in household bills, and stress-test whether you could still afford the mortgage if interest rates rose by 2-3%. This stress test often reduces your borrowing capacity by 10-20% compared to a simple income multiple.
Your deposit size matters too. A 5% deposit limits you to 95% LTV mortgages (fewer lenders, higher rates), while a 25% deposit opens up the best rates. As a rough guide: the larger your deposit relative to the property value, the lower your interest rate and the higher your realistic borrowing power.
For joint applications, lenders typically add both incomes together before applying the multiplier. A couple earning £35,000 and £30,000 (combined £65,000) could borrow £260,000-£292,500 — but some lenders cap the second income or apply stricter criteria for joint borrowers.
Self-employed? Most lenders need 2-3 years of accounts or SA302 tax year overviews. They will usually average your income over the most recent two years, so fluctuating profits can reduce what you can borrow. Contractors on day rates may have more flexibility if they have 12+ months remaining on their contract.
Quick Reference: Typical Mortgage Borrowing by Salary
| Annual Income | 4x Multiplier | 4.5x Multiplier | 5x Multiplier (Rare) |
|---|---|---|---|
| £25,000 | £100,000 | £112,500 | £125,000 |
| £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 |
| £70,000 | £280,000 | £315,000 | £350,000 |
| £100,000 | £400,000 | £450,000 | £500,000 |
| £150,000 | £600,000 | £675,000 | £750,000 |
| £200,000 | £800,000 | £900,000 | £1,000,000 |
These are estimates only. For incomes over £100,000 many lenders tighten the multiple towards 4x. Actual borrowing depends on your deposit, credit history, existing debts, and individual lender criteria. Joint applications combine both incomes before applying the multiplier.
Joint Mortgage: How Much Can a Couple Borrow?
| Combined Income | 4x Joint | 4.5x Joint |
|---|---|---|
| £50,000 | £200,000 | £225,000 |
| £60,000 | £240,000 | £270,000 |
| £70,000 | £280,000 | £315,000 |
| £80,000 | £320,000 | £360,000 |
| £100,000 | £400,000 | £450,000 |
| £120,000 | £480,000 | £540,000 |
| £150,000 | £600,000 | £675,000 |
| £200,000 | £800,000 | £900,000 |
Some lenders may cap the second applicant's income or use a lower multiplier for the lower earner. Use the calculator below to model your specific situation.
How much can you borrow on your salary?
How much can I borrow if I'm single on £40,000?
A single £40,000 salary typically borrows £160,000–£180,000 at 4–4.5x income. Monthly debts (loans, car finance, credit cards) come off first, and the stress test usually trims another 10–20% — so budget around £145,000–£160,000 if you carry commitments.
How much can we borrow jointly on £65,000?
Joint incomes are added before the multiplier: £30,000 + £35,000 (£65,000 combined) borrows £260,000–£292,500. Some lenders cap the second income or apply a lower multiple to the lower earner, so joint offers vary more between lenders than single ones.
How much can I borrow if I'm self-employed on £50,000?
Self-employed borrowers typically get 3.5–4.5x averaged profit — around £175,000–£225,000 on £50,000. You'll need 2–3 years of accounts or SA302s, and lenders average the last two years, so a weak recent year pulls the figure down.
How much can I borrow with a student loan on £35,000?
A £35,000 salary gives a headline multiple of £140,000–£157,500, but Plan 2 repayments (9% above the threshold) count as a monthly commitment and typically shave £3,000–£5,000 off the offer. Postgraduate loans (6% extra) trim a little more.
Next reads for affordability planning
Maximum Borrowing
£0
Mortgage Breakdown
Key Metrics
How This Works
Maximum borrowing is calculated using income multiples (4-4.5x annual income), minus annualised monthly commitments.
- Annual income (4-4.5x multiple)
- Monthly financial commitments
This is an estimate only. Actual borrowing capacity depends on lender criteria, credit history, and individual affordability assessments.
Next reads for affordability planning
Related Calculators
Buying with a partner? The Joint Mortgage Calculator applies the right income multiplier for each applicant based on employment type — essential when one of you is self-employed or a contractor.
Once you know your likely loan size, use the Mortgage Repayment Calculator to model the exact monthly cost at any interest rate and term — including what overpayments would save you in total interest.
Trying to work out how much you need to save first? See our guide on saving for a house deposit in the UK.
Frequently Asked Questions
How much can I borrow for a mortgage?
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Most UK lenders will lend between 4 to 4.5 times your annual gross income. For example, if you earn £40,000 per year, you could typically borrow between £160,000 and £180,000. Some lenders may offer up to 5-6 times income in exceptional circumstances, but this is rare and usually requires a high income and excellent credit history.
What is an income multiplier in mortgage lending?
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An income multiplier is the number of times your annual salary that a lender is willing to offer as a mortgage. Traditional multipliers range from 4x to 4.5x your gross annual income. Some specialist lenders may offer higher multipliers (5x-6x) for high earners, usually those earning over £75,000-£100,000 per year. The multiplier varies by lender, your credit score, and the type of property you're buying.
How do lenders calculate joint mortgage borrowing?
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For joint mortgages, most lenders add both incomes together and apply the income multiplier to the combined total. For example, if you earn £30,000 and your partner earns £35,000 (total £65,000), you could borrow £260,000-£292,500 at 4-4.5x multiplier. Some lenders may cap the second income contribution or use different multipliers for joint applications.
What impact do existing debts have on mortgage borrowing?
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Existing debts significantly reduce your borrowing capacity. Lenders deduct your monthly credit commitments (loans, credit cards, car finance) from your disposable income when calculating affordability. For example, £500 monthly debt payments could reduce your borrowing capacity by £50,000-£100,000 depending on interest rates. Paying off debts before applying can substantially increase what you can borrow.
How does my deposit size affect how much I can borrow?
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A larger deposit doesn't directly increase the amount lenders will lend, but it does affect the total property value you can afford. Your borrowing is based on income multiples, but your deposit plus the loan equals the maximum purchase price. A larger deposit also gives you access to better interest rates and more lender options, as you'll have a lower loan-to-value (LTV) ratio.
What is a mortgage affordability stress test?
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Lenders must stress test your affordability by calculating whether you could still afford repayments if interest rates increased by 2-3% above the mortgage rate. This is required by FCA regulations to ensure you won't default if rates rise. The stress test often reduces the amount you can borrow by 10-20% compared to a simple income multiple calculation.
Can self-employed people borrow as much as employed people?
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Self-employed applicants can borrow similar amounts, but lenders typically require 2-3 years of accounts or tax returns (SA302s) to prove income. Lenders often average your income over 2 years, which can reduce borrowing if your income fluctuates. Some lenders are more flexible and may use your most recent year's income if it's higher. Contractors on day rates may be treated as employed if they have 12+ months remaining on their contract.
What other factors affect mortgage affordability?
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Beyond income and deposit, lenders consider: your age (mortgages typically must be repaid by 70-75), number of dependents (children increase expenses), credit history (poor credit reduces borrowing), employment type (probation periods may be a concern), property type (non-standard construction may limit lending), and location (some postcodes are restricted). Regular gambling, overdraft usage, or payday loans in your bank statements can also reduce what lenders will offer.
Should I borrow the maximum amount offered?
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Just because a lender will lend you the maximum doesn't mean you should borrow it. Consider your lifestyle costs, future plans (children, career changes), potential interest rate rises, and the need for emergency savings. Many financial advisors recommend borrowing no more than 3-3.5x your income to maintain financial flexibility, even if lenders offer 4.5x or more. Leave room in your budget for home maintenance, furnishings, and unexpected expenses.
How can I increase my mortgage borrowing capacity?
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To increase what you can borrow: 1) Increase your income through promotions, side income, or job changes (must be permanent, not overtime), 2) Apply jointly with a partner to combine incomes, 3) Pay off existing debts to reduce monthly commitments, 4) Improve your credit score by fixing errors and paying bills on time, 5) Save a larger deposit to access better rates, 6) Consider a longer mortgage term (though you'll pay more interest), and 7) Choose the right lender as different lenders use different affordability criteria.