The taxes that you are referring to that are based on a dollar amount per gallon are the excise taxes imposed by the state. The cost of those taxes are charged to the brewery or to the distillery before the product ever leaves their warehouse and are already included in the cost that you paid for your beer and liquor inventory. If you are making retail sales of liquor and beer in either a tavern or liquor store, you would charge the normal sales tax rate that is applied to any other product that is sold in your state and county.
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