Tax Amount Calculator
Work out the tax on an amount and the total once tax is added. Enter the base amount and a tax rate (as a percentage) and the calculator returns the tax owed and the grand total. It's a simple, general-purpose tax tool for income, sales, or any flat-rate tax.
Formula
Tax = Amount × (Rate% ÷ 100); Total = Amount + Tax
- Tax = amount × (rate ÷ 100); the total is the amount plus that tax.
- Enter the tax rate as a plain percentage — for example, type 17 for 17%.
- This treats the amount as tax-exclusive (tax is added on top). For a tax-inclusive figure you'd work backwards instead.
- It applies a single flat rate, so it doesn't model tiered or progressive tax brackets.
- Use it for quick estimates of sales tax, VAT, or a flat income-tax rate.
1,000 at a 17% tax rate
Inputs
- Amount: 1000
- Tax Rate %: 17
Tax = 1,000 × 0.17 = 170. The total including tax is 1,000 + 170 = 1,170.
Frequently asked questions
How is the tax amount calculated?
Multiply the amount by the rate divided by 100. For 1,000 at 17%, that's 1,000 × 0.17 = 170 in tax.
What is the total?
The total is the original amount plus the tax — the full price including tax.
Is the rate entered as a decimal or percent?
As a percent. Enter 17 for 17%, not 0.17.
Does it handle tax brackets?
No — it applies one flat rate. For progressive income tax with multiple brackets, you'd need a bracket-based calculator.