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Add or remove sales tax from any price instantly.
💰 Use "Remove tax" to find the pre-tax amount when you only have the final total — common for VAT and GST.
Sales tax is a consumption tax charged on goods and services, calculated as a percentage of the sale price. In the United States, rates vary by state, county, and city — ranging from 0% (Oregon, Delaware) to over 10% in some areas. Many other countries use similar systems under different names: VAT in Europe, GST in Canada, Australia, and India.
To add tax: total = price × (1 + tax rate). For example, a $100 item with 8.25% tax: 100 × 1.0825 = $108.25. To remove tax (find the pre-tax amount): pre-tax = total ÷ (1 + tax rate).
These two operations solve opposite problems:
Average combined state + local sales tax rates for major states (verify current rates locally):
Note: city and county rates stack on top of state rates, so the rate where you actually shop may differ.
Disclaimer: This calculator is for informational and educational purposes only and does not constitute financial, investment, or legal advice. Calculated results are estimates based on the inputs you provide; actual figures may vary. Always consult a qualified professional before making financial decisions.
The Sales Tax Calculator lets you figure out sales tax calculatorinstantly, without reaching for a spreadsheet or doing the math by hand. Whether you're planning a budget, checking a loan, or working through homework, the tool applies the correct formula behind the scenes and shows the result the moment you enter your numbers.
Unlike a static chart or table, this calculator adapts to your exact inputs. You can adjust any value and see the outcome update in real time, which makes it easy to compare scenarios — for example, "what if the rate were 1% lower?" or "what if I paid an extra $50 a month?"
Common uses: people reach for this tool when they need to find a sales tax calculator by state, reverse sales tax calculator, add or remove sales tax, or pre tax price calculator.
Browser-based tools like this one have a few real advantages over installed software or manual methods:
The Sales Tax Calculator is based on the following formula:
tax = price × rate total = price × (1 + rate)
Variables: tax = Sales tax amount ($) price = Pre-tax price ($) rate = Sales tax rate (decimal, e.g. 0.0825 for 8.25%) total = Price with tax ($)
Sales tax is a percentage of the pre-tax price added at checkout. rate is expressed as a decimal (e.g. 0.08 for 8%).
Worked example: Step 1: price = $85.00, rate = 8.25% → 0.0825. Step 2: tax = 85 × 0.0825 = $7.01. Step 3: total = 85 × (1 + 0.0825) = 85 × 1.0825 = $92.01. Result: an $85 purchase in an 8.25% tax area comes to $92.01 at the register.
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