About Sales Tax Calculator
Calculate sales tax amounts or reverse-calculate pre-tax price from gross sales receipts. Designed to provide accurate, real-time calculations with zero wait time.
Formula
Tax = Base × Rate | Gross = Base + Tax
Example Calculation
Adding 8.25% sales tax on a $120 item gives $9.90 tax for a total of $129.90.
How to Use
- Enter your values into the fields above.
- The calculation runs automatically in real time.
- Review the primary result and detailed sub-component breakdown.