How to calculate North Carolina sales tax
Multiply the price by the combined rate. At the 4.75% state rate, a $250.00 sale carries $11.88 of sales tax, for a total of $261.88. 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 4.75% is $102.15 before tax and $4.85 of tax.
