Free tools for locums
The sums you keep doing in your head.
What to set aside from each shift, what your driving is worth, and whether a rate actually beats a salary, worked out properly for the 2026/27 tax year.
How much should you set aside?
Locum tax calculator
How much Income Tax, National Insurance and student loan you'll owe on a year of shifts, the share of each payment to set aside, and what your first January bill looks like with payments on account.
Open the calculatorWhat are your miles worth?
Locum mileage calculator
Your business miles for the year at HMRC's 55p and 25p rates, where the 10,000 mile threshold falls, and what the deduction saves you in tax.
Open the calculatorIs your rate worth it?
Locum rate vs salary calculator
Turn an hourly rate into the employed salary it really matches once unpaid holiday, the employer pension and your fees are counted, and see the rate you need to beat an NHS band.
Open the calculatorHow these calculators work
Each calculator uses the current HMRC figures and shows its workings, so you can see where the number comes from. They run in your browser and keep nothing between visits. For the same figures worked out for every shift you actually do, and kept all year, that's what Locumoid is for.
Not financial advice
These calculators are general information about UK tax and self-employment, not tax or financial advice. Check your own figures with HMRC or a qualified accountant.
Further reading.
Payments on account: why your January bill is so big
How Self Assessment catches up with new locums, and how to see the bill coming.
Read the articleClaiming mileage as a locum pharmacist
Which journeys count, how much you can claim for them, and the records you need to back it up.
Read the articleWhat you can charge when a pharmacy pays late
When an invoice is actually late, what you can charge for it, and how to stop chasing in the first place.
Read the article