Require a formula to apply a Tax calculation based on vendor status.

EG, If a vendor is registered, a tax calculation (10%) is charged on the base price, if not registered no calculation to be applied.

Formula resides in G3 for the Tax amount.

IF((A3=“Yes”),(E1*.10))

Where "A3="Yes or “No”

E1= Invoice Amount

Simple task I know but just cant Ragic to emulate an excel formula.

Any help would be appreciated.