UK Online VAT calculator

Add or extract VAT: calculate net amount without VAT in a few keystrokes.

Just type the gross value and press the Enter button to see the VAT and net amount.

VAT calculator usage

Simply enter the gross sum, choose vat calculation operation (include or exclude), tax percentage and press «Calculate» or Enter button to calculate VAT amount.

By default, the online VAT calculator rate is set for UK VAT calculation.

How to calculate VAT

Excluding VAT from gross sum:
VAT calculation formula for VAT exclusion is the following: to calculate VAT having the gross amount you should divide the gross amount by 1 + VAT percentage (i.e. if it is 15%, then you should divide by 1.15), then subtract the gross amount, multiply by -1 and round to the closest value (including pence). The last two operations are not mandatory since you see the VAT value even before you do them.
Adding VAT to net amount:
Simply multiply the net amount by 1 + VAT percentage (i.e. multiply by 1.15 if VAT is 15%) and you'll get the gross amount. Or multiply by VAT percentage to get the VAT value.
Read more about VAT tax on Wikipedia.