Locum and bank shifts are one of the most common ways NHS staff top up their income, whether that's a nurse picking up extra shifts through their trust's staff bank, or a doctor taking on locum work between rotations. The good news is that this income can absolutely count towards a mortgage. The detail that actually matters is how long a track record you can show, and choosing a lender whose approach to that track record fits your situation.
Key takeaway: Locum and bank income can be used whether it's your only source of income or a top-up alongside a substantive NHS role. Lenders vary considerably in how much history they want to see, from as little as three months with some to a full twelve months with others, and most will also want to see a shift payment on your most recent payslip. Getting matched to the right lender for your specific pattern of work is what makes the difference.
[[stats: 100's = NHS staff helped | 12 Months = Longest track record some lenders need | 5% = Minimum deposit available | Exclusive rates = Via our network of lenders | 100% = Additional income used by some lenders | National coverage = Wherever you work in the NHS]]
Why locum and bank income is assessed differently
On the face of it, this seems like it shouldn't be an issue. There is rarely a shortage of bank or locum shifts to pick up across the NHS, and most people doing this work have no trouble finding as many hours as they want. The complication is not availability, it's structure: locum and bank work has no set contractual hours behind it, unlike your basic salary on a substantive post.
Because there's no contract guaranteeing the hours will continue, many lenders need to take a longer-term view before they'll rely on that income for a mortgage. What they're really checking is not whether you can pick up shifts, it's whether the pattern of income you've already built up is likely to continue. A longer track record gives a lender more confidence that your locum or bank earnings are a sustainable part of your income, rather than a one-off spike.
How much history will a lender want to see?
There's no single rule across the market, and this is exactly where lender choice makes the biggest difference to your application.
[[table: Approach | What it means ;; 3 month average | Some lenders will average your last three months of bank or locum payslips. This can work well if your bank or locum income is relatively recent, or has increased lately, since it reflects your current pattern rather than diluting it with older, lower-earning months ;; 12 month average | Many lenders want a full twelve months of bank or locum payslips before they'll include the income, averaging it across the whole year. This smooths out quieter months but means a shorter history won't be usable yet ;; Your separate P60 | Bank or locum income is paid on its own separate payslip from your substantive role, with its own P60 generated for the tax year. Most lenders will want to see this alongside your payslips, and some will use whichever figure, the payslip average or the P60, is lower ;; A payment on your latest payslip | Lenders generally want to see a shift payment on your most recent payslip. If that shows £0, most will not use the income at all, whichever averaging period they work to]]
Which of these applies to you can make a real difference to how much of your bank or locum income actually counts. Someone with four months of strong locum earnings could be assessed very differently by a three-month-average lender than a twelve-month-average one, even though the underlying income is identical.
What if locum or bank work is my only income?
That's absolutely fine. Locum and bank income can be used as your sole source of income for a mortgage, assessed in the same way as described above, using an average over the lender's chosen period and cross-checked against your separate P60. The main thing a lender is looking for is a consistent, evidenced pattern, not a specific type of employment structure.
Can locum or bank income be a second income alongside my main job?
Yes, and this is one of the most common situations we see. If you work a substantive NHS role and pick up locum or bank shifts alongside it, most lenders can use both incomes together, your basic salary assessed as normal from your main payslip and P60, and your bank or locum earnings assessed separately against the same three or twelve month averaging rules described above, using their own payslips and P60. The two do not need to be with the same employer or NHS trust for both to count.
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Anything else good to know for locum or bank work?
A few practical things tend to make the biggest difference to how smoothly a bank or locum income assessment goes.
- It's paid and evidenced completely separately from your main role. Bank shifts are issued on their own payslip, distinct from your substantive post, and generate their own P60 for the tax year. Most NHS trusts let you choose whether these are issued weekly or monthly, so it's worth checking which you're set up for when gathering evidence for a lender.
- Your most recent payslip needs to show a shift payment. This is one of the most common things that catches people out. If your latest payslip shows £0 for bank or locum shifts, most lenders will not use the income at all, even if your three or twelve month average is strong. Keeping shifts going in the run-up to applying matters more than the total amount you've earned historically.
- Month-to-month swings matter far less than you'd think. Earning £3,000 one month and £300 the next makes little practical difference to a lender, since averaging is exactly what irons this out. What actually matters is that the income is genuinely ongoing, evidenced by a payment on your latest payslip, not that every month looks the same.
- Keep your documentation organised. Since most lenders will ask for somewhere between three and twelve months of bank or locum payslips plus your separate P60, having these ready to hand speeds up getting an accurate answer on how much of your income will count.
Whichever NHS role or combination of shifts you're working, a mortgage broker at Quanstrom Financial can match your specific pattern of income to the lender most likely to use it in full, rather than you approaching a lender at random and losing income along the way.
How much could you borrow?
Once your basic salary and any locum or bank income has been averaged correctly, lenders typically apply an income multiple to work out how much you could borrow, generally somewhere between 4.5 and 7 times your assessed income depending on your circumstances and the lender. Try the calculator below to get an indicative figure once you've worked out roughly how your income might be assessed.
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Where this fits with wider NHS mortgage advice
Locum and bank income is one part of a wider picture for NHS staff, alongside enhancements, overtime, night duty and shift allowances, which are also assessed differently from lender to lender. Our complete guide to NHS mortgages covers the full range of NHS income types and how much you could borrow, and if you're a doctor in training specifically, our guide to junior doctor mortgages looks at fixed-term training contracts alongside locum and bank shifts.
Frequently asked questions
Can locum or bank shifts be used for a mortgage?
Yes. Locum and bank income can be used towards a mortgage application, though lenders vary in exactly how they assess it and how much history they want to see first.
Can locum or bank income be my only source of income?
Yes. It can be used as your sole income, assessed using the same averaging approach a lender applies to any bank or locum earnings, alongside your separate P60 for that income.
Can locum or bank income be used alongside my main NHS role?
Yes. Most lenders can use both together, your basic salary assessed as normal and your bank or locum income averaged separately using its own payslips and P60, provided you can evidence both.
Why do lenders need a longer track record for locum or bank income than for a fixed salary?
Because locum and bank work has no set contractual hours behind it. Even though shifts are usually easy to find, there's no contract guaranteeing they'll continue, so many lenders want to see a track record that shows the income is a sustainable, ongoing pattern rather than a short-term spike.
How much payslip history will I need?
It varies by lender. Some will average your last three months of bank or locum payslips, while many others want a full twelve months before including the income. Most will also want to see your separate P60 for that income.
Is bank or locum income paid on the same payslip as my main NHS role?
No. Bank and locum shifts are paid on their own separate payslip, distinct from your substantive role, and generate their own P60 for the tax year. Most trusts let you choose whether these are issued weekly or monthly.
Do lenders use my payslips or my P60?
Often both. Many lenders will average your bank or locum payslips and also check this against your separate P60 for that income, sometimes using whichever figure is lower.
What happens if I didn't work any bank or locum shifts last month?
Most lenders want to see a shift payment on your most recent payslip. If that payslip shows £0, most will not use the income at all, whatever your average looks like over the last three or twelve months. It's worth keeping shifts going in the run-up to applying if you plan to rely on this income.
Does it matter if my bank or locum earnings vary a lot from month to month?
Not especially, since averaging is designed to iron exactly this out. Earning £3,000 one month and £300 the next makes little difference to the figure a lender will use. What matters far more is that your most recent payslip shows a payment, since a nil month can mean the income isn't used at all.
Do you help NHS locum and bank workers across Eastbourne and East Sussex?
Yes. Quanstrom Financial is a whole-of-market mortgage broker based in Eastbourne, and we regularly help NHS staff with locum and bank income from Eastbourne, Brighton, Hastings, Lewes, Bexhill, Seaford, Uckfield, Hailsham and the wider East Sussex area, as well as staff working further afield across the UK.
Written by Toby Quanstrom CeMAP, Director at Quanstrom Financial, a whole-of-market mortgage broker based in Eastbourne, East Sussex, specialising in mortgages for NHS staff.
This article is general information only and does not constitute personal advice. Lender criteria vary considerably and change regularly, and whether a mortgage is available depends on your individual circumstances.
Your home may be repossessed if you do not keep up repayments on your mortgage.
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