VAT / GST Calculator
Add or extract value-added tax from amounts.
Net $1,000 Tax @ 20% $200 Gross $1,200
Works for VAT, GST, sales tax โ any percentage-based tax.
About the VAT / GST Calculator
Add value-added tax to a net amount or extract it from a gross amount, at any percentage rate. The three tiles always show the net, the tax itself and the gross, with a two-decimal breakdown beneath. It works equally for VAT, GST, sales tax or any other flat percentage tax.
How to use the VAT / GST Calculator
- Choose a mode: Add tax to net, or Extract tax from gross.
- Enter the amount in the field labeled for that mode.
- Type the tax rate percentage, such as 20 for UK VAT.
- Read the Net, Tax amount and Gross tiles and the exact breakdown.
VAT / GST Calculator FAQ
What is the difference between the two modes?
Adding takes a net price and applies the rate; extracting takes a tax-inclusive price and removes the tax, dividing by 1 + rate instead of multiplying โ the two give different numbers at the same rate.
How do I back the tax out of a receipt total?
Select Extract tax from gross, enter the total including tax and the rate printed on it; the tool returns the net amount and the embedded tax separately.
Does it round like an invoice?
The tiles display two decimals like a typical invoice; the underlying values remain unrounded, so recomputing from the displayed numbers may differ by a fraction of a cent.