Locum work in the NHS and healthcare sector is common, well-paid, and entirely legitimate. Yet for many locum doctors, nurses, and allied health professionals, getting a mortgage accurately reflects their earnings remains one of the most frustrating parts of the process.
The problem is lender variability. Some lenders treat locum income the same as employed income. Others average it cautiously. Some require 12 months of invoices; others accept 3–6 months. A handful will assess locum doctors by day rate in the same way they assess IT contractors. Getting the lender selection right before you apply is what determines whether your mortgage reflects what you actually earn — or a fraction of it.
There is no single standard approach — lenders handle locum income in several different ways:
Some lenders assess locum income using the latest 3–6 months of invoices or remittance slips. They calculate the average monthly income and annualise it over 12 months. This is one of the most common approaches used by lenders with specialist healthcare or contractor-friendly criteria, and in some cases only 6 months of history is required.
Other lenders prefer to see a full 12-month history of locum invoices before assessing affordability. They usually average the income across the year to calculate annual earnings. This approach is more restrictive for newly established locums or applicants who have recently moved from employed NHS work into locum roles.
Some contractor-friendly lenders assess locum income using a day rate calculation rather than invoice averages. The lender multiplies the day rate by the number of days worked per week and annualises the figure over 46 weeks. A current contract or engagement letter confirming the day rate is normally required for this assessment method.
Where locums are paid directly through an NHS trust or an agency with tax deducted at source, lenders may assess income using payslips instead of invoices. Consistent payslip history and supporting documents such as a P60 can help demonstrate stable earnings and improve affordability calculations.
Applicants with both employed NHS income and additional locum work are often assessed using both income streams together. Lenders may take 100% of the employed salary and combine it with averaged or annualised locum income. This can significantly improve overall borrowing potential where both incomes are consistent and well documented.
| Locum Day Rate / Annual Invoiced | Assessed Income (Method Dependent) | At 4.5× | At 5× |
|---|---|---|---|
| £300/day | Up to £69,000 | £310,500 | £345,000 |
| £400/day | Up to £92,000 | £414,000 | £460,000 |
| £500/day | Up to £115,000 | £517,500 | £575,000 |
| £600/day | Up to £138,000 | £621,000 | £690,000 |
| £120,000 p.a. invoiced | Up to £120,000 | £540,000 | £600,000 |
Some lenders offer enhanced income multiples for qualified medical professionals — up to 5.5× income — recognising the long-term earnings trajectory of NHS careers.
Requirements vary by lender and income type. Common evidence includes the following:
Lenders usually request between 3–12 months of invoices or remittance slips, depending on their criteria and the applicant’s experience level. They also commonly ask for 3 months of bank statements showing the payments being received, and in some cases an accountant’s reference or SA302 tax calculations may also be required.
Agency and umbrella company locums are typically asked to provide 3 months of payslips from the agency or umbrella provider, together with a current contract or engagement letter confirming the work arrangement. Most lenders will also request 3 months of personal bank statements to verify the income being paid consistently.
Locums working directly through an NHS trust are commonly assessed using standard employed income documentation. This usually includes a recent P60 together with 3 months of payslips from the trust. Where additional locum shifts are involved, lenders may also ask for supporting engagement letters or contracts.
Visa holders are generally required to provide valid passport identification together with visa or BRP documentation confirming their right to live and work in the UK. Many lenders will also request proof of UK residency history to satisfy their individual lending requirements.
Mortgage Knight is a whole-of-market FCA-authorised broker (FCA No: 994617). We work nationally — locum mortgage advice is available to healthcare professionals across the whole of the UK. We have access to Harpenden Building Society and the full range of lenders with dedicated healthcare and locum income criteria.
Broker fee: £495 payable on application.
NHS locum doctors and other healthcare professionals arriving on Skilled Worker or Health and Care Worker visas represent a significant and growing proportion of the locum workforce. The combination of locum income and visa status creates two variables that both need to be handled correctly by the lender.
Harpenden Building Society (on Mortgage Knight’s lender panel) accepts Health and Care Worker and Skilled Worker visa holders with no minimum income and no minimum time in the UK — up to 90% LTV. Where the locum income is agency-paid or trust-direct, the Harpenden product can apply.
Halifax also accepts locum income and Skilled Worker visa holders under their foreign national framework, with LTV depending on residency and income level.
Yes. Several lenders have dedicated criteria for locum doctor income, assessing earnings from invoices, remittance slips, payslips or day rates depending on how the locum works.
It varies. Some lenders require only 3–6 months. Others require 12. We identify the right lender for your track record before any application is submitted.
Yes. Many lenders will assess 100% of employed NHS income plus locum income separately — either averaged or by day rate — significantly increasing your total assessed income.
Yes. Agency nurses are typically assessed using payslips from the agency and bank statements confirming consistent income. Some lenders average 3–6 months of payments.
Yes. Harpenden Building Society accepts Health and Care Worker visa holders with locum income and no minimum UK residency requirement. Halifax also accepts Skilled Worker visa holders with locum income under their foreign national framework.
