Tax calculation spreadsheet for self employed individuals

Some years ago, I made a spreadsheet for myself so that I wouldn’t have a nasty shock when I did my tax return. I shared it with a few friends and on Twitter and it went mildly viral. It has a cashbook, travel and milage calculator and how to include PAYE income.

This is a free to use resource and there are clear instructions on the front page on how to download it so please don’t contact me asking for permission to access it. Link to the current tax year here:

Tax calculation spreadsheet 2025/26

Some useful links

A list of some useful links for theatre makers and producers here