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Reverse Sales Tax Calculator

Reverse Sales Tax Calculator. A user enters a tax-inclusive total, sales-tax rate, and taxable flag to estimate the pre-tax price and tax component. Use it when a receipt shows a tax-inclusive total and the pre-tax price is needed.

Inputs

State, Local & Transactional Taxes inputs

Range: 0–100,000,000 $

Enter a non-negative US-dollar amount for the stated tax year; use the same tax year and jurisdiction for all related inputs. Professional example: 108.25. Edit this value for your own facts.

Range: 0–100 %

Enter a percentage as a whole number, such as 22 for 22%, not 0.22. Professional example: 8.25. Edit this value for your own facts.

Range: 0–1 1=yes, 0=no

Enter a non-negative US-dollar amount for the stated tax year; use the same tax year and jurisdiction for all related inputs. Professional example: 1. Edit this value for your own facts.

Result

Pre Tax Price
100.00
Sales Tax
8.25
How to interpret this result
Reverse Sales Tax Calculator starts with a professional planning example for this scenario. Edit the inputs to replace the example with your own facts; the displayed outputs update from the formula.
Applicability and limits
This is a reverse arithmetic calculation. It does not identify local rates, rounding conventions, mixed taxability, marketplace rules, or use-tax obligations.
Calculation basis
Only the named inputs and displayed formula relationships are used. Rates, limits, thresholds, eligibility flags, dates, and jurisdiction assumptions are not silently looked up unless a verified dataset is listed.

Formula

Calculation logic

Formula definitions and substituted values.

What to check

  • A user enters a tax-inclusive total, sales-tax rate, and taxable flag to estimate the pre-tax price and tax component.
  • Use it when a receipt shows a tax-inclusive total and the pre-tax price is needed.
  • This is a reverse arithmetic calculation. It does not identify local rates, rounding conventions, mixed taxability, marketplace rules, or use-tax obligations.

Related calculators

This is a reverse arithmetic calculation. It does not identify local rates, rounding conventions, mixed taxability, marketplace rules, or use-tax obligations.