Sales Tax Calculator Formula
Understand the math behind the sales tax calculator. Each variable explained with a worked example.
Formulas Used
Sales Tax
tax_amount = price * tax_rate / 100Total Price
total_price = price + tax_amountVariables
| Variable | Description | Default |
|---|---|---|
price | Price Before Tax(USD) | 50 |
tax_rate | Sales Tax Rate(%) | 8.25 |
How It Works
How Sales Tax Is Calculated
Tax = Price × Tax Rate / 100
Total = Price + Tax
Worked Example
A $50 purchase with 8.25% sales tax.
price = 50tax_rate = 8.25
- 01Tax = $50 × 8.25% = $4.13
- 02Total = $50 + $4.13 = $54.13
Ready to run the numbers?
Open Sales Tax Calculator