Free tools for UK locum clinicians.

Working as a locum means doing your own paperwork: raising an invoice for every session, claiming mileage at the right HMRC rate, putting money aside for a tax bill that arrives months later, and checking that a bank shift paid the enhancement it should have. These tools answer those questions one at a time. They use the current published figures, such as the 2026/27 tax bands and the HMRC mileage rates, and say where each figure comes from. They are estimates to check your own numbers against, not tax or pay advice, and your accountant or your employer's payroll team has the final word.

1. 01Locum invoice template

   Fill in your details, the organisation and each session or shift, and download a clean PDF invoice with your payment terms and bank details on it. No account is needed to make one. It suits GP sessions, pharmacy and nursing shifts and every other profession Sessional supports, and it carries the VAT exemption wording most clinical work needs.

2. 02HMRC mileage calculator

   Work out a business mileage claim at the HMRC approved rates: 55p a mile for the first 10,000 business miles in the tax year and 25p after that, for a car or van. Motorcycles (24p) and bicycles (20p) have their own flat rates, and journeys before 6 April 2026 use the earlier 45p rate, so pick the tax year you are filing for.

3. 03Locum tax calculator 2026/27

   Estimate income tax, Class 4 National Insurance and take-home pay on self-employed locum income for the 2026/27 tax year. It uses the England, Wales and Northern Ireland bands or the Scottish bands, so you can see roughly what to set aside before the 31 January payment. It is an estimate, not a tax return.

4. 04NHS unsocial-hours calculator

   Enter an Agenda for Change band and a shift window to see the enhancement for Saturday, night, Sunday and bank holiday hours, block by block. Bands 1, 2 and 3 each have their own multipliers and bands 4 to 9 share one pair, which is exactly where payslip errors tend to hide for nurses, midwives and allied health bank staff.

5. 05NHS pension tier calculator 2026/27

   Estimate your 2026/27 NHS pension tier as a locum GP: annualise your pensionable pay the way NHSBSA does and see the member contribution rate that tier carries. It covers England and Wales, Scotland and Northern Ireland, and links the NHSBSA, PCSE and scheme pages its figures come from so you can check them before you declare a tier.

6. 06Late payment interest calculator

   Work out the statutory interest and fixed compensation you can add to a late locum invoice: 8% over the Bank of England reference rate, plus £40, £70 or £100 depending on the debt. It follows the Late Payment of Commercial Debts (Interest) Act 1998, fixes the rate by the date interest starts to run, and shows the daily figure as well as the total claim.

7. 07Locum GP pay check

   Enter a session fee and its length to see the hourly rate it works out at, set against Sessional's own reference rate and the median for your region. No sign-up and no email capture. The reference rate is Sessional's published figure, not a BMA rate, and the page says where each number comes from.