Most UK mortgage lenders will offer you somewhere between 4.5 and 6 times your annual income, though a handful stretch to 7 times in the right circumstances. Where you land on that scale depends on more than your salary alone: your deposit, your credit profile, whether you're a first-time buyer, and even which type of income you're paid in can all move the number up or down. Just as important as the multiple itself is what a lender actually counts as income in the first place - which is why two lenders offering different multiples can end up offering very different loan sizes.
Key takeaway: Lenders commonly offer between 4.5x and 6x income, with some going further for strong applications. But your mortgage isn't decided by the multiple alone - it's decided by the multiple applied to however much of your income that particular lender is willing to count. Matching you to the lender whose combination of multiple and income assessment gives you the biggest usable loan, not just the highest headline figure, is where a broker adds the most value.
[[stats: 4.5x-6x = Typical income multiple range | 90+ = Lenders we search across | 5% = Deposits from]]
Why do mortgage lenders offer different multiples?
Picture UK mortgage lending as a triangle. At the base, a broad band of lenders - most of the market - will lend up to 4.5 times your income to pretty much anyone who meets their standard affordability checks. As you move up the triangle, the pool of lenders willing to go further narrows. By the time you reach 6 times income, only a handful remain, each with tighter criteria about who qualifies. It isn't that higher multiples don't exist; it's that fewer lenders offer them, and they reserve them for borrowers who fit a specific profile.
Good to know: Regulators limit how much of a lender's overall mortgage book can be advanced at high income multiples. This is one of the reasons the highest multiples are reserved for stronger applications rather than offered to everyone who asks.
What moves you further up the triangle?
A number of factors can widen your access to the higher-multiple lenders further up the triangle:
[[table: Factor | How it can help ;; First-time buyer schemes | Some lenders offer enhanced multiples exclusively to first-time buyers - Nationwide's Helping Hand scheme, for example, allows up to 6 times income for first-time buyers with as little as a 5% deposit. ;; Higher earnings | A number of lenders raise their maximum multiple once your income passes a set threshold, giving higher earners access to products the wider market doesn't offer. ;; A larger deposit | Reducing your loan-to-value by putting down a bigger deposit can unlock a lender's higher-multiple product tier, even if your income alone wouldn't otherwise qualify. ;; A 5-year fixed rate | Choosing a 5-year fix means lenders stress-test your affordability less strictly than they would for a 2-year fix, which can support a higher multiple.]]
Why the highest multiple isn't always the best deal
It's tempting to assume the lender offering the biggest multiple will lend you the most. That isn't always true, because lenders assess income very differently from one another.
Example: Say you earn a £30,000 basic salary plus £20,000 a year in commission. Lender A offers up to 6 times income but only counts 50% of your commission, assessing your income at £40,000 - giving a maximum loan of £240,000. Lender B offers a lower multiple of 5 times income, but counts 100% of your commission, assessing your income at £50,000 - giving a maximum loan of £250,000. Despite the lower headline multiple, Lender B lends you more. It's all swings and roundabouts, and it's exactly why the "best" lender depends on your income mix, not just the multiple advertised.
[[table: | Lender A | Lender B ;; Income multiple | 6x | 5x ;; Basic salary | £30,000 | £30,000 ;; Commission counted | 50% (£10,000) | 100% (£20,000) ;; Assessed income | £40,000 | £50,000 ;; Maximum loan | £240,000 | £250,000]]
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Want to see how different multiples and income levels change your own borrowing power? Try the calculator below.
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How different types of income are assessed
Lenders don't treat all income equally. Some use your gross pay, others your net profit after expenses; some average your earnings over several months or years, others only count a fixed percentage of anything beyond your basic salary. The table below covers some of the income types that are assessed very differently from lender to lender.
[[table: Income type | How it's typically assessed ;; IT Contractors | Most lenders will treat IT contractors as self-employed, and average the profits of your last 2 years' tax returns, or your company profits if you're working through a limited company. Specialist lenders will base your income on your day rate instead, which substantially increases the lender's income calculation, though fewer lenders specialise in this and criteria vary widely - a broker at Quanstrom Financial can identify which lenders suit your contract structure. ;; Zero hour Contractors | Lenders generally want to see a consistent history on a zero-hours contract before relying on the income - this is because the hours aren't guaranteed, so lenders want to see a track record. Some lenders take a 3 month average, some a 6 month average, some a 12 month average, and some base this on your last P60 figure. As you can imagine, these income calculations can vary dramatically. ;; Overtime income | Regular overtime is assessed differently by different lenders. Some only count 50% of it, some 60%, some 70%, and some the full 100%. Some look at the last 3 months, some 6 months, some 12 months, and some base it on your previous year's earnings. Again, it's the same income, but the difference to your borrowing can be dramatic depending on which lender you choose. ;; Bonus income | Annual bonuses are typically averaged over the last two years. Some lenders only take the most recent year's figure, and some, such as NatWest, will only count 70% of the latest 2 years' average. Quarterly bonuses work similarly - some lenders take the latest 3 quarters, some the last 4, and some the last 8. Monthly bonuses are assessed in much the same way as overtime. ;; Commission income | Similar to bonus and overtime income, commission is usually averaged over the last three months, and only a set percentage is counted - the percentage used varies significantly by lender, as the worked example above shows. ;; RSU income (restricted stock units) | Most mainstream lenders don't count RSU income at all, since it's technically an asset rather than salary. A smaller group of specialist lenders will count a portion of vested RSU value, provided you can evidence a consistent vesting history. ;; Upcoming pay rises | A pay rise that hasn't shown up on a payslip yet can sometimes be used if your employer confirms it in writing, subject to the new pay beginning within the next three months. Using a lender who accepts upcoming pay rises can help increase your borrowing potential. ;; New job | If your new job is starting within three months, some lenders will use this income, provided a signed contract is available. Again, if your pay is increasing, this could allow you to increase your borrowing based on your future income. See our guide on getting a mortgage when you're about to start a new job for more detail.]]
CIS Contractor income
Specialist lenders annualise your day rate or average recent CIS invoices, though the exact method varies - some average 3 months on a 46-week working year, others 6 months, and some simply total the last 12 months of invoices. Read our full guide to CIS contractor mortgages to see how to pick the method that suits your circumstances.
Self-employed income
Some lenders will average your last 2 years' net profit, evidenced by your tax calculations. Some will just work off the latest year, and some will work off projections. If you're a limited company director, there's even more that can be done - your income can be assessed using your company's net profit before tax with some lenders, or after tax plus your director's salary with others. Some lenders can even add back in pension contributions to increase your company's profits. Read our full guide to getting a mortgage when you're self-employed for the detail.
Dentist income
Associate dentists who invoice a practice for UDA and private work are treated in a similar way to other self-employed professionals, but the right lender can go further: some will lend up to 6 times income for dentists specifically, and can work from your invoices rather than waiting for two years of tax returns. See our dedicated guide to mortgages for associate dentists.
NHS staff income
NHS pay includes basic salary plus various allowances - unsocial hours, high-cost area supplements and more - and lenders vary in how much of this additional income they'll count and how they want it evidenced. Our guide to NHS mortgages covers what to expect.
Junior doctor income
Junior doctors face a particular quirk: foundation and specialty training posts are fixed-term contracts, which some lenders assess under stricter fixed-term-contract rules rather than treating you like a permanent employee. Lenders who understand medical training contracts can typically offer between 4.5 and 5.5 times income, with 6 or 7 times available in the right circumstances. Read our full guide to mortgages for junior doctors.
This list isn't exhaustive. Teaching, flying for a living and running your own limited company are just a few of the other circumstances where income is assessed differently from lender to lender. If your income doesn't fit a standard salaried pattern, it's worth checking with a broker rather than assuming you'll be turned away.
Does your credit score affect how much you can borrow?
There's no single UK credit score. Each lender uses its own scoring system, often pulling from a different credit reference agency, and each sets its own threshold for which products you can access. A lower credit score doesn't necessarily stop you getting a mortgage, but it can restrict you to lenders offering the standard 4 to 4.5 times multiple, since the enhanced and high-multiple products tend to come with stricter credit criteria. Our complete guide to your credit score covers what lenders look for and how to improve your position before you apply.
Why it pays to speak to a broker
As the worked example above shows, the lender offering the highest multiple isn't always the one who'll lend you the most, and it's rarely the most straightforward route either. What matters is matching your specific income mix, deposit, credit profile and circumstances to the lender whose criteria suit you best. That isn't something you can easily work out from a comparison website - it takes checking actual lender criteria against your own situation, which is exactly what a whole-of-market broker does for you.
Frequently asked questions
What is the maximum income multiple mortgage lenders offer in 2026?
Most high street lenders cap their standard multiple at 4.5 to 5 times income, but a number of lenders offer up to 6 times in the right circumstances, and a small number of specialist lenders go as high as 7 times income for particularly strong applications. Which of these you can access depends on factors like your deposit, employment type and credit profile.
Can first-time buyers borrow more than 4.5 times their income?
Yes. Several lenders run first-time buyer schemes that allow multiples of up to 6 or even 7 times income, usually alongside a minimum deposit requirement. These schemes are designed specifically to help first-time buyers onto the property ladder and generally aren't available to home movers or remortgage customers.
Does a low credit score affect how much I can borrow?
It can. While a lower credit score doesn't automatically mean you'll be refused a mortgage, it often restricts you to lenders offering the standard income multiple rather than the enhanced products that go up to 6 or 7 times income, since those tend to come with tighter credit criteria.
Is it always better to choose the lender offering the highest income multiple?
Not necessarily. As our worked example shows, a lender offering a lower multiple can sometimes lend you more overall if it counts a larger share of your bonus, commission or other variable income. The right lender depends on your full income picture, not just the headline multiple.
Written by Toby Quanstrom CeMAP, Director at Quanstrom Financial, a whole-of-market mortgage broker based in Eastbourne, East Sussex.
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