Skip to content

Sales Tax Calculator

Add sales tax to a price, or extract the tax from a tax-inclusive total. Combine state, local and special-district rates into one combined rate. Enter your own rate — no local rate is assumed.

Written and reviewed by the CalcBundle editorial team. Transparent formulas · results are estimates, not advice.

Pre-tax price
$
%
Or split by component (optional)
%
%
%

Sales tax

Enter a price and a tax rate greater than zero.

Sales tax formula

  • Sales tax = price × tax rate
  • Total = price + sales tax
  • Reverse (inclusive): pre-tax price = total ÷ (1 + rate)

Tax-inclusive vs tax-exclusive pricing

Many US prices are shown tax-exclusive (tax added at checkout), while many other regions show tax-inclusive prices. Switch modes to add or extract tax accordingly.

Combining local rates

Enter state, local and special-district components and the calculator sums them into a combined rate. For pricing decisions, pair this with the product pricing calculator and profit margin calculator.

Frequently asked questions

How do I calculate sales tax?

Multiply the pre-tax price by the tax rate to get the tax, then add it to the price for the total. For example, $100 at 8% is $8 tax and $108 total.

What is tax-inclusive vs tax-exclusive?

Tax-exclusive means the price shown is before tax (tax is added). Tax-inclusive means the price already contains tax; this calculator can extract the tax from an inclusive total.

Does it know my local sales tax rate?

No — you enter the rate. Sales tax rates vary by state, county and district and by item, so CalcBundle does not guess a local rate. You can also split state, local and special-district rates.

Related calculators

Product Pricing

Find a profitable selling price from costs, fees, ads and target margin.

E-commerce Profit

Calculate net profit, margin, break-even price and maximum ad spend for a product.

Profit Margin

Calculate profit, margin and markup from revenue and cost.

Discount

Work out sale price, savings and true stacked-discount percentages.

Disclaimer. This calculator provides estimates for informational purposes only. Results are based on the information you enter and the assumptions used by the calculator. Actual financial, tax, business valuation, lending, marketplace or investment outcomes may differ. Consider consulting a qualified professional for decisions involving significant amounts of money. Sales tax rates and taxability vary by jurisdiction and item. Enter the applicable rate; results are estimates.