Formula
VAT formula
VAT Amount = Net Price × VAT Rate
- Gross Price = Net Price × (1 + VAT Rate).
- Reverse calculation finds the net amount embedded inside a tax-inclusive price.
- The same logic is also useful for GST and sales-tax style calculations.
Tax Calculator
VAT Calculator
Add or reverse-calculate VAT, sales tax, and tax-inclusive prices so you can quote cleaner totals and verify invoices faster.
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Example scenarios
Use it like a decision tool
Invoice preparation
Net price £1,250 · VAT 20%
Quickly generate the tax amount and gross total before sending a quote or invoice.
Tax-inclusive checkout review
Total €119 · reverse VAT at 19%
Useful for backing out the pre-tax amount when reviewing marketplace or supplier pricing.
FAQ
Common questions
Can I use this for sales tax or GST too?
Yes. The tax math is very similar, so the page is useful for VAT, GST, and sales-tax style scenarios.
What does reverse VAT mean?
It means starting from a tax-inclusive total and calculating the net amount plus the tax portion inside that total.
Why is this useful for businesses?
Because it reduces pricing mistakes, speeds up invoice work, and makes tax-inclusive versus tax-exclusive quotes easier to verify.
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