How tax works for NHS workers isn’t as simple as most people assume, and if you’ve recently picked up bank shifts, agency work, or any income outside your main NHS role, your tax situation probably just got a lot more interesting.

PAYE Covers Your Main Salary. It Doesn’t Cover Everything Else.

Most NHS employees are on PAYE, which means your employer deducts income tax and National Insurance before your pay hits your bank account. For a lot of staff, that works fine for their main salary. The problem starts when you earn money outside that arrangement.

Bank shifts through your NHS trust’s staff bank, agency work through a third-party agency, locum sessions, or any private income you pick up on the side all sit outside your standard PAYE. Some NHS trusts will tax bank shifts through a second PAYE code, but whether the right amount is being deducted is another question entirely. If you’re working across more than one source of income, there’s a reasonable chance your tax position isn’t quite right.

Do NHS Workers Need to File a Self Assessment?

Not everyone does. If your only income is your NHS salary and it’s being taxed correctly through PAYE, you probably don’t need to file a return. But there are situations where you do, and it’s more common among NHS staff than you might think.

You’ll likely need to file a Self Assessment if you do agency or locum work, if you earn over £100,000 (your personal allowance starts to reduce at that point), if you have rental income or freelance work outside the NHS, or if you want to claim expenses and tax relief that PAYE doesn’t automatically give you. Missing a Self Assessment you should have filed can mean penalties and interest, so if you’re unsure whether you need one, it’s worth finding out sooner rather than later. If you work with NHS staff and want to know how I handle this, you can read more on my accounting for NHS workers page.

The NHS Pension: Tax Relief You’re Already Getting (And Charges You Might Not Know About)

The NHS Pension Scheme operates on what’s called a net pay arrangement. Your contributions come out of your gross salary before income tax is calculated, which means you get tax relief automatically through your payslip without having to claim anything. According to the NHSBSA, contribution rates are also changing from 1 April 2026 as pay thresholds are updated, so it’s worth checking your current rate hasn’t moved you into a different band than you expect. For a basic rate taxpayer, every £100 of pension contribution costs £80 in take-home pay. For a higher rate taxpayer paying 40% on earnings above £50,270, that same £100 only costs £60.

The part that catches a lot of NHS staff off guard is the annual allowance. In 2026/27, the standard annual allowance for pension savings is £60,000. The BMA explains that if the growth in your pension exceeds that limit in a given year, you’ll face a tax charge on the excess. For doctors and senior staff in particular, this can happen without a significant pay rise, simply because of how the NHS Pension calculates growth. Carry forward and something called Scheme Pays can help manage this, but you need to know it’s coming before the charge arrives.

What Can NHS Workers Actually Claim For?

This is the bit most NHS staff have never been told about. If you’re in a profession regulated by a statutory body, your annual registration fee is an allowable expense. That means your NMC fee if you’re a nurse or midwife, your HCPC registration if you’re a paramedic, physiotherapist or other allied health professional, and your GMC registration if you’re a doctor. You can claim tax relief on those costs through Self Assessment.

Uniforms and specialist clothing that you wash yourself can be claimed through a flat rate allowance. Union fees through organisations like Unison or the BMA are also eligible. If you use your own car to travel between different work sites (not your regular commute, but travel between workplaces), you can claim mileage at the approved rate. The honest answer is that most NHS staff I speak to have never claimed any of this, and it adds up to more than people expect over several years.