A practical guide to mortgage affordability in the UK—how lenders use your income, outgoings, deposit and other factors to decide how much you can borrow.
How much do I need to earn to get a mortgage?
How much do I need to earn to get a mortgage?
If you’re wondering “what salary do I need for a mortgage?”, the honest answer is: there isn’t one fixed figure. Lenders look at your income alongside your outgoings, your deposit, and your overall financial situation to decide what you can afford.
Income is a major starting point, but the amount you can borrow depends on how lenders assess affordability for your circumstances.
The 3 things that most affect how much you can borrow
When lenders assess affordability, they typically focus on:
- Your income – how much you earn and whether it’s considered reliable.
- Your outgoings – existing monthly commitments such as credit cards, loans, childcare costs and other regular payments.
- The lender’s risk approach – which depends on factors like your deposit and the mortgage structure.
Even if your salary looks strong, higher outgoings (or a smaller deposit) can reduce the amount you’re approved for.
Income multiples: what they mean (and why they vary)
In the UK, lenders may use an income multiple (how many times your annual income they’re willing to lend) as part of their assessment. The multiple you’re offered can vary widely depending on your circumstances.
Common factors that can affect the multiple include:
- Deposit size / loan-to-value (LTV)
- Type of income (for example, whether it’s salaried, commission-based, or overtime)
- Your credit profile
- Your overall affordability after outgoings and living costs are taken into account
Higher multiples are sometimes associated with more specialist lending and may come with different underwriting requirements.
Note: You may see different “typical” multiples online. Your actual borrowing will depend on the lender’s criteria and your affordability assessment.
Minimum income: do lenders have a floor?
Some lenders may set their own minimum income thresholds, but these can differ. The key point is that minimum income alone doesn’t determine approval—lenders still need to be satisfied that you can afford the repayments based on your full financial picture.
How other income can change what you need to earn
Your salary isn’t the only kind of income that may be considered. Depending on the lender’s rules and how your income is evidenced, they may take into account certain additional sources such as:
- Bonuses, commission and overtime (often subject to a track record)
- Pension income (where applicable)
- Some benefits (where they’re treated as regular and sustainable)
- Income from investments (where it can be evidenced)
If you have variable income, the way it’s averaged or evidenced can make a big difference to what you can borrow.
Mortgage affordability isn’t just about your salary
Even with a strong income, lenders will stress-test affordability. That means they’ll consider:
- Your monthly debt commitments
- Household costs and dependants
- The mortgage term you’re applying for
- The repayment type (for example, repayment vs interest-only)
- Whether your income is stable and likely to continue
So two people earning the same salary can have different borrowing outcomes.
Quick affordability examples: income needed for common mortgage sizes
The tables below show a simplified illustration of how an income multiple can translate into a target mortgage amount.
Important: This is for guidance only. Your actual borrowing will depend on your deposit, outgoings, lender criteria and affordability assessment.
Example: mortgage of £120,000
| Target mortgage | 4.0x income | 4.5x income | 5.0x income | 5.5x income | 6.0x income |
|---|---|---|---|---|---|
| £120,000 | £30,000 | £26,667 | £24,000 | £21,818 | £20,000 |
Example: mortgage of £160,000
| Target mortgage | 4.0x income | 4.5x income | 5.0x income | 5.5x income | 6.0x income |
|---|---|---|---|---|---|
| £160,000 | £40,000 | £35,556 | £32,000 | £29,091 | £26,667 |
Example: mortgage of £400,000
| Target mortgage | 4.0x income | 4.5x income | 5.0x income | 5.5x income | 6.0x income |
|---|---|---|---|---|---|
| £400,000 | £100,000 | £88,889 | £80,000 | £72,727 | £66,667 |
Example: mortgage of £500,000
| Target mortgage | 4.0x income | 4.5x income | 5.0x income | 5.5x income | 6.0x income |
|---|---|---|---|---|---|
| £500,000 | £125,000 | £111,111 | £100,000 | £90,909 | £83,333 |
Joint applications: how household income can help
If you’re applying with a partner, lenders may combine incomes (subject to their rules). That can reduce the income you personally need, because the affordability assessment is based on the household’s overall position.
How your deposit affects the income you “need”
A deposit can influence how lenders view your risk.
In practice, a larger deposit can mean:
- a lower loan-to-value (LTV)
- potentially more options when it comes to the mortgage structure
- a smoother path to meeting affordability requirements
So if you’re trying to work out what salary you need, it’s worth looking at the deposit you’re planning to use as well.
How a mortgage broker can help you work out the right income target
Because lenders assess affordability differently, the fastest way to get clarity is to model your situation across lenders that are likely to fit.
A broker can help by:
- identifying which lenders are more likely to consider your income type
- checking how your outgoings may be treated
- advising on how changing your deposit or term could affect affordability
- helping you avoid wasting time with lenders that may not be a good match
Next step: use your numbers to estimate borrowing power
If you want a realistic view of what you can borrow, gather:
- your annual income (and evidence of any variable elements)
- a list of monthly outgoings and debts
- your deposit amount and any planned contributions
- the mortgage term you’re considering
Then you can compare your target mortgage size against income multiple ranges—while keeping in mind that affordability is ultimately about your full financial picture.
Get in touch
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New Lane, Bradford, BD4 8BX
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