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Sales Tax Calculator (2025)

Calculate sales tax for any state. Uses combined state + average local rates. Override for a specific city.

Combined state + average local rate

Total with tax

$108.85

Sales tax

$8.85

8.850%

Pre-tax amount

$100.00

Note: Five states have no statewide sales tax (AK, DE, MT, NH, OR), but Alaska localities can still charge their own. Use the custom-rate override for known city/county rates.

Analysis & insights

For CA at 8.850% (combined state + average local), $100.00 pre-tax becomes $108.85 at checkout — $8.85 in sales tax. Within the typical US range. National average is approximately 7.5% combined.

High sales tax

Above-average — common in states like CA, NY, IL, WA when combined state + local.

Risk & benchmark gauge

Current band

High

8.85% combined rate

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None / lowTypicalHighVery high

Industry benchmarks

  • Total with tax$108.85
  • Sales tax amount$8.85
  • Effective rate8.85%
  • Pre-tax amount$100.00
  • US national average~7.5%
  • Lowest (no tax states)0% (AK, DE, MT, NH, OR)

Key insights

State + local rates compound

The rate shown is combined state + average local. Specific cities can be 1-3 percentage points higher. Use the custom rate field for a known city/county rate.

Online purchases now tax-in (mostly)

Since the 2018 South Dakota v. Wayfair ruling, online retailers must collect sales tax in states where they have a customer base. The "tax-free online shopping" era is mostly over.

Some categories exempt

Most states exempt groceries, prescription drugs, and many services. Some exempt clothing under a price cap. Your effective rate on a real shopping basket may be lower than the headline rate.

Sales tax holidays

Many states have annual sales tax holidays for back-to-school, hurricane prep, energy-efficient appliances. Worth knowing for big-ticket purchases.

Recommended actions(4)

Use the custom rate field for your specific city

Medium priority

Combined rates can vary significantly within a state. Your actual rate may be different from the state average shown.

Track sales tax for the SALT deduction

Medium priority

If you itemize, you can deduct EITHER state income tax OR state sales tax (whichever is higher). In no-income-tax states (TX, FL, WA, NV), tracking sales tax can mean a real federal deduction.

Watch for sales tax holidays

Quick win

Florida, Texas, Massachusetts, and others have annual sales tax holidays. Time big purchases (back-to-school, appliances, hurricane supplies) to those windows.

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This tool is for educational purposes only and does not constitute financial, tax, or investment advice. Consult a qualified financial professional for advice specific to your situation.