Adding tax
When starting from a net amount, tax equals net × rate ÷ 100 and gross equals net plus tax.
Extracting included tax
When the entered amount already includes tax, net equals gross ÷ (1 + rate/100). The included tax is gross minus net.
Jurisdiction rules
This tool performs arithmetic only. It does not determine whether a tax applies, which rate is legally correct, or how a tax return should be prepared.
Frequently asked questions
Are results saved or uploaded?
The calculation runs in your browser. Tooliyapa does not require an account to use this calculator.
Should I verify an important result?
Yes. For financial, health, academic, engineering, legal, or other consequential decisions, verify the inputs, assumptions, and result against an appropriate authoritative source or qualified professional.