Value added tax (VAT) calculator:
GST calculator ►
VAT amount = VAT Rate(%) × Net amount
Gross amount = Net amount + VAT amount = (100% + VAT Rate(%)) × Net amount
Net amount = 100£VAT Rate = 20%
VAT amount = 20%×100£ = 20£
Gross amount = (100%+20%)×100£ = 120£