How it works
You supply the tax rate. This calculator does not determine legal VAT or sales-tax treatment, exemptions or jurisdictional rules.
FormulaAdd tax: gross = net×(1+r). Extract tax: net = gross÷(1+r).
MONEY & BUSINESS / TAX ARITHMETIC
← All toolsVAT / sales tax
Add tax to a net price or extract included tax from a gross price.
Your numbers
Loading calculator...
◈ Your values stay in your browser. No account needed.
YOUR RESULT
Enter your numbers to see a result.
VAT / sales tax: a worked example
With amount 120, tax rate (%) 20, amount entered is Before tax (net), the amount including tax is $144.00.
| Amount | 120 |
|---|---|
| Tax rate (%) | 20 |
| Amount entered is | Before tax (net) |
| Amount including tax | $144.00 |
|---|---|
| Net amount | $120.00 |
| Tax amount | $24.00 |
| Gross amount | $144.00 |
Amounts are shown in US dollars for illustration. Choose your own currency in the calculator above; it labels amounts and does not convert them.
Make the numbers useful
Try changing one input at a time. The live result helps you see which assumption has the greatest effect.
Use Save scenario A, change an input, and compare both results side-by-side. You can also share your settings using a link.
Modelled results are estimates. Independently check decisions involving health, finances or safety.
Frequently asked questions
How is the vat / sales tax calculated?
Add tax: gross = net×(1+r). Extract tax: net = gross÷(1+r). You supply the tax rate. This calculator does not determine legal VAT or sales-tax treatment, exemptions or jurisdictional rules.
What does the vat / sales tax example show?
With amount 120, tax rate (%) 20, amount entered is Before tax (net), the amount including tax is $144.00. Net amount: $120.00; Tax amount: $24.00; Gross amount: $144.00.
What assumptions and limits apply?
This is an estimate based on the inputs and assumptions shown on this page, not professional advice. Check anything with financial, health or safety consequences independently.
Is my data private?
Yes. Calculations run in your browser and your numbers are not sent to a server. A share link contains the inputs you choose to share, so check it before sending it to anyone.
Can I use my own currency?
Yes. Pick from 33 currencies and the amounts are labelled to match. The selector does not convert between currencies, so enter prices in your own currency.