Sales Tax / GST / VAT Calculator
Add tax to a net price or extract tax from a tax-inclusive price.
How to use the Sales Tax / GST / VAT Calculator
- Enter your figures in the fields above — results update instantly as you type.
- Choose your currency symbol (the maths is the same in any currency).
- Use Share result to save a link that reloads your exact inputs, or Print for your records.
- Compare scenarios by changing one input at a time and noting how the main result moves.
Formula
Add: Total = Net × (1 + rate) Remove: Net = Gross ÷ (1 + rate)Worked example
100 plus 13% tax is 113. Removing 13% from 113 returns a net of 100 and tax of 13.
Frequently asked questions
Why can't I just subtract 13%?
Because the tax was calculated on the smaller net amount, not on the gross.
Which rate applies to me?
Rates vary by country, province or state and by product category — check your tax authority.
Assumptions & limits
Results are estimates based on the inputs you provide and the formula shown, rounded for display. They do not account for every fee, tax rule or market condition. This tool is educational and is not financial, tax or legal advice — confirm important decisions with a qualified professional.
Related calculators
Discount Calculator
Sale price with stacked discounts and what you really save.
Hourly ↔ Salary Converter
Convert an hourly wage to weekly, monthly and annual pay.
Percentage Calculator
X% of Y, what percent A is of B, and the reverse.
Percentage Change Calculator
Increase or decrease between two values, as a percent.
Tip & Bill Split Calculator
Tip amount and each person's share.
Unit Price Comparison
Which pack size is really cheaper per unit.