The everyday toolkit
VAT / Tax Calculator
Add tax to a net amount or extract included tax using your chosen rate.
Free · No account needed · Calculated in your browserEnter your values
Your result
A clear answer starts here.
Enter your values and choose Calculate to see the result. Changing a value clears the previous answer.
Results are rounded to two decimal places for display. Calculations use unrounded values. Use the same currency for all monetary inputs.
Use this calculator
- Choose a calculation mode when available and read the labels for its inputs.
- Enter your own values. Use consistent units and enter percentages as 10 for 10%, rather than 0.10.
- Select Calculate, then review all displayed results together with the formula and assumptions below.
- Change one value to compare scenarios. Use Reset to return to the worked example.
How this calculator works
Enter the tax rate that applies to your purchase. This tool applies one flat rate; it does not determine which rate or exemptions apply.
Add tax: gross = net × (1 + rate ÷ 100). Extract tax: net = gross ÷ (1 + rate ÷ 100). Tax = gross − net.
Worked example
Adding 10% tax to a net amount of 100 gives net amount of 100.00. The calculator also shows tax amount: 10.00. Use the form above to enter your own values. Monetary examples are in the same currency throughout.
Questions about this calculation
Do you choose my tax rate?
No. Supply the rate applicable to your transaction; the default example is not a determination of local law.
How do I remove included tax?
Choose Extract tax from a gross amount. At a hypothetical 10% rate, gross 110 divided by 1.10 gives net 100 and tax 10.