US Sales Tax Calculator

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Sales Tax Data Methodology

Direct Answer

This site uses 2026 state and average local rate references for educational estimates, selected ZIP examples for calculator behavior, and official state sources where available. It is not a substitute for official address-level lookup, filing software, or professional tax advice.

Instant Calculator

Calculate Sales Tax

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Beverly Hills, California combined rate

9.5%

Example ZIP-level estimate for Beverly Hills, California.

State tax
$7.25
Local tax
$2.25
Total tax
$9.50
Final amount
$109.50

Source Hierarchy

For broad state comparisons, the dataset uses Tax Foundation's 2026 state/local rate table, which compiles state rates, average local rates, and maximum local rates. For state-specific verification, users should consult state revenue departments or official address-level tools.

  • Tax Foundation: State and Local Sales Tax Rates, 2026: Used for state rates, population-weighted average local rates, maximum local rates, and combined average rates as of January 1, 2026.
  • California Department of Tax and Fee Administration rate lookup: Official California city, county, and address rate lookup reference.
  • Texas Comptroller Sales Tax Rate Locator: Official Texas address-level sales tax locator.
  • Florida Department of Revenue discretionary surtax: Official Florida guidance for county discretionary sales surtax.
  • Washington Department of Revenue sales and use tax rates: Official Washington rate lookup and destination-based sales tax guidance.

Calculator Limits

The current calculator is an estimator. ZIP codes do not always align with tax jurisdictions, and average local rates do not guarantee the rate for a specific address. The site intentionally distinguishes estimates from official collection guidance.

Sources

Primary Data Sources

Tax Foundation: State and Local Sales Tax Rates, 2026Used for state rates, population-weighted average local rates, maximum local rates, and combined average rates as of January 1, 2026.California Department of Tax and Fee Administration rate lookupOfficial California city, county, and address rate lookup reference.Texas Comptroller Sales Tax Rate LocatorOfficial Texas address-level sales tax locator.Florida Department of Revenue discretionary surtaxOfficial Florida guidance for county discretionary sales surtax.Washington Department of Revenue sales and use tax ratesOfficial Washington rate lookup and destination-based sales tax guidance.

FAQ

Sales Tax Questions

Is this calculator legal or tax advice?+

No. It is an educational estimator and should be verified with official sources before collecting, filing, or remitting tax.

How often should sales tax data be updated?+

At minimum, state and local rate references should be reviewed quarterly and after major state tax announcements.

Why does the calculator use sample ZIP records?+

Sample ZIP records make estimates fast and transparent, but they do not replace full address-level rate verification.

Why can ZIP estimates be wrong?+

ZIP codes are postal areas, not tax jurisdictions. A ZIP can cross city, county, or special district boundaries.

What sources should users verify against?+

Users should verify against state revenue department tools, official rate lookup systems, local tax authority guidance, or tax compliance software.

Does this site store calculator inputs?+

The calculator is designed for browser-side estimation. Users should not enter sensitive taxpayer or business information.

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Use these pages to verify rate logic, ZIP accuracy, ecommerce obligations, and state-level data before relying on an estimate.