State Sales Tax Rates by Zip Code 2026: 50-State Guide
2026 State Sales Tax Overview:
US sales tax rates vary dramatically by state, county, city, and transit district. Combined rates range from 0.00% in Oregon, Delaware, Montana, and New Hampshire up to 10.25%+ in cities like Chicago, IL and parts of California. Model sales tax rate impacts using our Avalara Sales Tax Calculator.
Understanding Economic Nexus & Zip Code Tax Complexity
Since the landmark Supreme Court South Dakota v. Wayfair ruling, remote online sellers are required to collect and remit sales tax in any state where they exceed economic nexus thresholds. The standard benchmark in most states is $100,000 in gross annual sales or 200 separate transactions.
Because single 5-digit zip codes can span multiple municipal boundaries, relying on basic 5-digit zip code tax tables can cause tax calculation errors. Rooftop address matching (used by tax APIs like Avalara and TaxJar) maps physical street addresses to exact tax jurisdictions.
Zero Sales Tax States (The NOMAD States)
Five US states do not impose a general statewide sales tax, often referred to by the acronym NOMAD:
- New Hampshire (NH): 0.0% statewide sales tax.
- Oregon (OR): 0.0% statewide sales tax (impose local corporate activity tax).
- Montana (MT): 0.0% statewide sales tax (select resort towns impose local tourist taxes).
- Alaska (AK): 0.0% statewide sales tax (local municipalities may impose local sales tax up to 7.5%).
- Delaware (DE): 0.0% statewide sales tax (imposes gross receipts tax on businesses).
California Local Rates: Irvine, Costa Mesa, Sacramento & Food Exemptions
California imposes a base state sales tax of 7.25%, but local district taxes push combined rates much higher:
- Irvine & Costa Mesa (Orange County): Combined sales tax rate of 7.75%.
- Sacramento (Sacramento County): Combined sales tax rate of 8.75% (2025/2026 rates).
- California Grocery & Food Tax Rules: Unprepared grocery food items intended for home consumption are exempt from sales tax in California. However, hot prepared food items, sodas, and dietary supplements are fully taxable.
Texas Sales Tax: Austin, Houston, Dallas, San Antonio & Vehicle Tax
Texas has a base state sales tax rate of 6.25%. Local jurisdictions (cities, counties, and transit authorities) can add up to 2.0% in local option taxes, bringing the maximum combined rate to 8.25% across major metropolitan hubs:
- Houston, Austin, Dallas, & San Antonio: 8.25% combined sales tax rate.
- Texas Vehicle Sales Tax: Motor vehicle purchases in Texas are subject to a flat 6.25% Motor Vehicle Sales and Use Tax based on total purchase price or standard presumptive value (SPV).
Colorado Home-Rule Cities & State Income vs. Sales Tax Lookup
Colorado is famous among tax professionals for its complex "Home-Rule" city structure. While the state base sales tax is a low 2.9%, self-collecting home-rule cities like Denver (8.81% combined) establish their own tax bases and filing rules. Additionally, Colorado maintains a flat state income tax rate of 4.40% alongside local sales tax lookups.
Southern & Midwest Rates: TN, AR, GA, NC, SC, FL, IL, MN, OH
- Tennessee (TN): Base state sales tax of 7.00% + local option surtaxes up to 2.75% (combined 9.75%). Tennessee imposes a specialized single-article tax cap on vehicle purchases.
- Arkansas (AR): Base state rate of 6.50% + local taxes up to 5.0% (combined 9.50%+). Vehicle purchases require dedicated state tax registration.
- Illinois & Chicago (IL): Base state rate of 6.25%. Chicago features one of the highest combined sales tax rates in the nation at 10.25%.
- Minnesota (MN): Base state sales tax of 6.875% with Minneapolis/St. Paul local transit surtaxes.
- Georgia (GA): Base state rate of 4.00% + county option taxes (combined 7.00% to 8.90%).
- Florida (FL): Base state rate of 6.00% + county discretionary sales surtaxes (combined 6.00% to 7.50%).
Comprehensive 50-State Sales Tax Reference Table
| State | State Base Tax Rate | Max Local Tax Rate | Economic Nexus Threshold |
|---|---|---|---|
| Alabama (AL) | 4.00% | 7.50% (Avg 9.25%) | $250,000 |
| Arizona (AZ) | 5.60% | 5.60% (Avg 8.37%) | $100,000 |
| California (CA) | 7.25% | 3.50% (Max 10.75%) | $500,000 |
| Colorado (CO) | 2.90% | 8.30% (Avg 7.80%) | $100,000 |
| Florida (FL) | 6.00% | 1.50% (Max 7.50%) | $100,000 |
| Georgia (GA) | 4.00% | 4.90% (Avg 7.35%) | $100,000 / 200 txns |
| Illinois (IL) | 6.25% | 4.75% (Max 11.00%) | $100,000 / 200 txns |
| Texas (TX) | 6.25% | 2.00% (Max 8.25%) | $500,000 |
Sources and Community References
- Reddit SalesTax guide on high-volume tax calculation solutions: SalesTax - High Volume Sales Tax Solutions
- Reddit SalesTax guide on state sales tax system recommendations: SalesTax - Tax Calculation & Filing Systems
