VAT calculator
Calculator
The calculator needs JavaScript. The tables below give the same numbers for common cases.
How it is worked out
- Tax = net × rate = $100.00 × 0.2 = $20.00.
- Gross = net + tax = $120.00. Type the rate that applies to you.
| Inputs | Answer |
|---|---|
| Calculate: Add VAT or sales tax to a net price; Amount: 100; Tax rate: 20 | $100.00 plus 20% is $120.00 (tax $20.00). |
| Calculate: Remove it from a gross price; Amount: 120; Tax rate: 20 | $120.00 including 20% tax is $100.00 before tax (tax $20.00). |
| Calculate: Add VAT or sales tax to a net price; Amount: 49.99; Tax rate: 8.25 | $49.99 plus 8.25% is $54.11 (tax $4.12). |
How to use it
To add tax, multiply the net price by (1 + rate). To remove it from a gross price, divide by (1 + rate). $100 plus 20% is $120; $120 including 20% is $100 net with $20 of tax.
Rates differ by country, region and product, so type the rate that applies; the calculator does not look one up.
Frequently asked questions
How do I add VAT?
Multiply the net price by 1 + the rate: 100 × 1.20 = 120.
How do I remove VAT from a gross price?
Divide by 1 + the rate; do not just subtract the rate percent.
Why not subtract 20% from 120?
20% of 120 is 24, but the tax in 120 is 20, because the 20% was added to the net price.
Method: standard arithmetic shown step by step; no outside data is used. Checked 2026-11-12.
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General information only. Results are plain arithmetic on the numbers you enter; check anything important (money, health, school work) against your own records or the official source.