Tax Set-Aside Calculator
When a client pays you, some of that money is really for the tax office. Put in a few recent payments and the percentages you want to hold back. This shows how much to move into a separate pot each time, and the running total. Your entries are saved on this device. Nothing is sent anywhere.
How this works
It adds up the payments you enter, applies the income tax, National Insurance and pension percentages you set, and shows the total to move into a separate pot. If you enter your own bill estimate for the year, it tells you whether the pot is keeping pace with what you have earned so far.
This is a planning aid, not tax advice. It does not work out your actual tax bill, know your allowances, or file anything. The percentages are yours to choose and reconcile with a proper estimate. Check your position with an accountant or your tax authority. The full Tax Set-Aside Tracker keeps the running ledger over the whole year, logs money in and out of the pot, and compares it to your estimate.