Divide the total price by (1+ sales tax rate).

So, if the bill says $26.5 and the tax rate is 6%: Then $26.50/1.06=$25.00 .

You can double-check by reversing the procedure: Tax = $25.00 x 6% = $1.50. So total price = ($25.00 + $1.50) = $26.50.

So, if the bill says $26.5 and the tax rate is 6%: Then $26.50/1.06=$25.00 .

You can double-check by reversing the procedure: Tax = $25.00 x 6% = $1.50. So total price = ($25.00 + $1.50) = $26.50.