Tax Calculator
Pre/post tax amounts
About This Calculator
Sales tax is a percentage-based charge added to the purchase price of goods and services, varying by state, country, and product type. This calculator lets you find the tax amount, the total price after tax, or work backwards to find the pre-tax price from a tax-inclusive total.
Formula
Tax Amount = Price × (Rate / 100)
Total = Price + Tax Amount
Pre-tax = Total ÷ (1 + Rate / 100)
Example Calculation
A $75 purchase with 8.5% sales tax.
- Tax = $75 × 0.085 = $6.375 → rounded to $6.38
- Total = $75 + $6.38 = $81.38
Tax is $6.38, total is $81.38
Total Price Including Tax
| Price | 5% tax | 7% tax | 8.5% tax | 10% tax |
|---|---|---|---|---|
| $25 | $26.25 | $26.75 | $27.13 | $27.50 |
| $50 | $52.50 | $53.50 | $54.25 | $55.00 |
| $100 | $105.00 | $107.00 | $108.50 | $110.00 |
| $200 | $210.00 | $214.00 | $217.00 | $220.00 |
| $500 | $525.00 | $535.00 | $542.50 | $550.00 |
Frequently Asked Questions
How do I calculate tax-inclusive price from a net price?
Multiply the net price by (1 + rate/100). For 8.5% tax: Total = Price × 1.085.
How do I reverse-calculate the pre-tax price from a total?
Divide the total by (1 + rate/100). For example, $108.50 ÷ 1.085 = $100.00.
Is sales tax the same everywhere?
No. In the US, sales tax varies by state and locality, ranging from 0% to over 10%. Some countries include VAT in listed prices, while others add it at checkout.