VAT countries
Use the UK VAT, UAE VAT, EU custom, and Japan consumption tax presets as a starting point, then edit the rate for your exact case.
VAT, GST & Sales Tax Calculator
Calculate tax-inclusive and tax-exclusive prices for common VAT, GST, and sales tax situations. Pick a country preset, edit the rate if needed, then add tax to a net price or remove tax from a total price.
Tax result
Base amountGBP 0.00
Tax amountGBP 0.00
Total amountGBP 0.00
Rate used20%
Rates are editable because country, state, province, product, and exemption rules can change. Use this calculator for quick estimates, not tax advice.
Country presets
Common VAT, GST, and sales tax presets
The calculator includes quick presets for popular searches, while still allowing the user to enter any local tax rate manually.
GST countries
Use Australia GST, Canada GST, Singapore GST, New Zealand GST, and India GST presets for quick inclusive or exclusive tax math.
US sales tax
US sales tax varies by state, city, county, and product type, so the US preset starts at 0% and expects the user to enter the actual rate.
Formula
VAT, GST, and sales tax formulas
The same simple formulas work for many tax systems when you already know the correct tax rate.
Tax exclusive formula
Tax Amount = Base Amount x Tax Rate / 100
Total Amount = Base Amount + Tax Amount
Tax inclusive formula
Base Amount = Inclusive Total x 100 / (100 + Tax Rate)
Tax Amount = Inclusive Total - Base Amount
FAQ
Global tax calculator FAQ
What is a VAT, GST, or sales tax calculator?
It is a calculator that adds tax to a base amount or removes tax from a tax-inclusive total when you know the applicable tax rate.
Can I use this for any country?
Yes, choose Custom rate and enter your own tax rate and currency code. The presets are only shortcuts for common searches.
Why is the tax rate editable?
Rates can vary by country, state, province, product type, exemption, date, and business status, so the calculator lets you override every preset.
How do I remove VAT or GST from a total?
Select "Remove tax from inclusive total", enter the final price, choose the rate, and the calculator separates the base amount and tax amount.
Is this tax advice?
No. This tool is for quick math and estimates. For invoices, filings, and compliance, verify the current tax rules with the relevant tax authority or a professional.