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Sales Tax Calculator

Add state and local sales tax to any purchase amount.

Updated for the 2026 tax year · Last data update May 19, 2026
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How to Use

  1. Enter the purchase amount.
  2. Choose the state.
  3. Optionally add a local/city rate.
  4. Review the tax and total.

Calculation Method

Sales tax = amount × (state rate + local rate). Total = amount + sales tax.

State base rates are stored per state; local rates vary by city/county, so enter your local rate for an exact figure.

Data source: state Departments of Revenue.

Examples

\$250 in California + 2.25% local

Combined rate 9.5%.

\$273.75 total

Frequently Asked Questions

Only if you enter a local rate. The state base rate is included automatically; city/county rates vary.

Many states exempt groceries, prescriptions or clothing. This calculator assumes the item is fully taxable.

Alaska, Delaware, Montana, New Hampshire and Oregon have no statewide sales tax (Alaska permits local sales taxes).

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Disclaimer

This calculator provides estimates for informational and educational purposes only. SmartTaxCalcs does not provide tax advice. Your actual tax liability may differ based on your specific situation, recent law changes, and circumstances not modeled here (e.g., AMT, NIIT, special credits). We strongly recommend consulting a qualified tax professional (CPA, Enrolled Agent, or tax attorney) before filing or making financial decisions.

Data source: IRS Revenue Procedure / state Departments of Revenue. Last data update: May 19, 2026.

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