Sales Tax Decalculator Template

Sales Tax Decalculator Template

This sales tax decalculator template will help you calculate the pre-tax price of a good or service when the total price and tax rate are known.

This is what the sales tax decalculator looks like:

Sales Tax Decalculator Screenshot


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Sales Tax Decalculator

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Pre-tax price formula

Here is the formula for de-calculating the tax, or determining the pre-tax price of the good/service.

Pre-Tax Price  =  TP – [(TP / (1 + r) x r]


TP = Total Price

r = Tax rate


How the decalculator works

The Excel decalculator works by using a formula that takes the following steps:

Step 1: take the total price and divide it by one plus the tax rate

Step 2: multiply the result from step one by the tax rate to get the dollars of tax

Step 3: subtract the dollars of tax from step 2 from the total price


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