Best use for this tool
It is best used as a planning helper for setting money aside through the year, not as a final bill calculator.
Fourth live tool
Tax Set-Aside Estimator
Use this rough planning helper to estimate how much profit you may want to reserve through the year.
This version is a planning tool for England, Wales, and Northern Ireland. It is not an official tax calculation and it is not tax advice.
Estimate a practical set-aside amount
Enter your estimated annual profit for the year before tax.
This tool uses profit as the starting point, not turnover.
What it does not cover
It does not cover every allowance, relief, loan, pension, or regional variation. A Scotland-specific version can be added later.
Next helpful step
After planning what to reserve, the next useful layer is software guidance and comparison content.