How to calculate New Jersey sales tax
Multiply the price by the combined rate. At the 6.625% statewide rate, a $250.00 sale carries $16.56 of sales tax, for a total of $266.56. 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 6.625% is $100.35 before tax and $6.65 of tax.
