Sales tax calculator
This sales tax calculator adds the tax to any price: enter the pre-tax price and your local tax rate, and it shows the tax amount plus the final total.
Purchase details
Sales tax calculator FAQ
How is sales tax calculated?
Multiply the price by the tax rate divided by 100, then add it to the price. A $50 item at 8% tax adds $4, for a $54 total.
Is sales tax the same everywhere?
No — rates vary by state, county, and city, and some places charge no sales tax at all. Always use your local rate in this sales tax calculator.
What if the price already includes tax?
To find the pre-tax price, divide the total by (1 + rate ÷ 100). A $54 total at 8% tax means the pre-tax price was $50.
Does this sales tax calculator round the result?
Results are shown to two decimals, matching how stores round to the nearest cent.
Can I use it for VAT or GST?
Yes — the math is identical. Enter your VAT or GST rate as the tax percentage.