How to calculate Maine sales tax
Multiply the price by the combined rate. At the 5.5% statewide rate, a $250.00 sale carries $13.75 of sales tax, for a total of $263.75. Add the county, city or district rate for the delivery address to get the full rate for that sale.
To find the tax inside a total that already includes it, divide the total by 1 plus the rate. A $107.00 receipt at 5.5% is $101.42 before tax and $5.58 of tax.
