VAT calculator

Adding: VAT is the amount times the rate, and the gross is amount plus VAT. Removing: a gross price is 100 plus the rate parts of itself, so VAT is gross times rate over 100 plus rate, and the net is what remains. The two directions reverse each other, which the example below the result shows with your own numbers. Figures come out exact with no official rounding rule applied, so a filing figure still needs the rounding your tax authority prescribes. This is arithmetic, not tax advice.