Free tools
Free tools for GP locums
Quick calculators for the questions every locum asks: what to charge, what to set aside for tax, what you'll actually take home, and when your pension forms are due.
Every tool runs entirely in your browser. Nothing you type is sent to us or stored anywhere.
Locum rate calculator
What session rate do you need to match a salaried GP job? Accounts for the employer pension you give up and the sick pay and holiday you no longer get.
Open the toolTax set-aside calculator
How much of each locum payment should you put by for HMRC? Estimates income tax and Class 4 National Insurance on your profits.
Open the toolTake-home pay calculator
What do you actually keep? Gross locum income minus expenses, pension contributions, income tax and National Insurance.
Open the toolPension Form A helper
Enter a session's date and fee to see the 10-week Form A deadline, the contribution payment deadline and the estimated pension figures.
Open the toolReading while you're here: Making Tax Digital for locum GPs — what changed in April 2026 and when it applies to you.
Want this done for you automatically?
Locum Notes logs your sessions, works out pension and mileage figures, raises invoices and tracks CPD — so the numbers are always there when you need them.
Try Locum Notes free