Sales Tax Calculator
Find the total price with sales tax and the tax amount instantly.
Sales Tax Calculator
Calculate total with sales tax
How to Calculate Sales Tax
Sales tax is a consumption tax imposed by governments on the sale of goods and services. Our calculator helps you quickly compute the tax and final price.
The Sales Tax Formula
Tax Amount = Price before Tax × (Tax Rate % / 100)
Total Price = Price before Tax + Tax Amount
Step-by-Step Calculation
- Identify the pre-tax price and the sales tax rate.
- Convert the tax rate to a decimal by dividing by 100.
- Multiply the pre-tax price by the decimal to find the tax amount.
- Add the tax amount to the pre-tax price to get the total cost.
For example, an 8.5% sales tax on a $150 item: tax amount is $150 × 0.085 = $12.75. The total price is $150 + $12.75 = $162.75.
Frequently Asked Questions
Multiply the price of the item before tax by the sales tax rate in decimal form (e.g., 6% = 0.06) to get the tax amount. Add that to the price for the total.
Tax Amount = Price × (Tax Rate / 100).
Sales tax is calculated on the final negotiated sale price after all discounts are applied. For example, if a $100 item is discounted by 20% to $80, the sales tax is calculated on $80.