The Structure of Sales Tax in the United States
Unlike the majority of industrialized nations that levy a uniform national Value-Added Tax (VAT), the United States has no federal sales tax. Instead, consumption taxation is decentralized across state, county, municipal, and special transit district jurisdictions. Over 11,000 individual sales tax taxing jurisdictions exist across the country, creating an intricate patchwork of statutory tax rates and exemptions.
In a typical retail transaction, the buyer pays a Combined Sales Tax Rate comprising:
- State Base Sales Tax: Set by state legislature (ranging from 0% to 7.25%).
- County / Parish Surtax: Levied by county commissions to fund county hospitals, road maintenance, and court systems (0% to 3.0%).
- City / Municipal Sales Tax: Assessed by municipal governments for police, fire, and parks (0% to 5.0%).
- Special Purpose District Tax: Additional surcharges earmarked for public transit authorities (e.g., BART in California, MARTA in Atlanta) or stadium development districts.
The NOMAD States: Zero Statewide Sales Tax
Five states do not impose a statewide general sales tax. These jurisdictions are colloquially known in tax planning as the NOMAD states:
- New Hampshire (NH): 0% general sales tax, 0% earned income tax. Funded primarily by property taxes and hospitality room/meals taxes.
- Oregon (OR): 0% state sales tax, no local sales taxes. Funded through progressive personal income taxes.
- Montana (MT): 0% state sales tax. Select resort communities (e.g., Whitefish, Big Sky) assess local resort taxes up to 3%.
- Alaska (AK): 0% state sales tax, but local municipalities levy local sales taxes up to 7.85% (e.g., Juneau, Wasilla).
- Delaware (DE): 0% sales tax. Imposes a Gross Receipts Tax on commercial sellers rather than a retail point-of-sale tax on consumers.
Destination vs. Origin Sourcing After South Dakota v. Wayfair
Prior to 2018, e-commerce retailers were only required to collect sales tax in states where they maintained physical facilities, offices, or warehouses (Quill Corp. v. North Dakota). The US Supreme Court's landmark 2018 decision in South Dakota v. Wayfair, Inc. overturned that physical presence rule, establishing the doctrine of Economic Nexus.
Today, virtually all online merchants exceeding $100,000 in gross interstate sales are legally mandated to collect sales tax based on destination sourcing—the tax rate in effect at the shipping address of the purchaser.
Comparative Benchmark: 50-State Sales Tax Reference Table
The table below provides a comprehensive statutory comparison of state base sales tax rates, average local additions, and grocery taxability across major US states:
| State | State Base Rate | Avg Local Add-on | Avg Combined Rate | Groceries Exempt? |
|---|---|---|---|---|
| California (CA) | 7.25% | 1.60% | 8.85% | Yes (Exempt) |
| Texas (TX) | 6.25% | 1.95% | 8.20% | Yes (Exempt) |
| Florida (FL) | 6.00% | 1.02% | 7.02% | Yes (Exempt) |
| New York (NY) | 4.00% | 4.52% | 8.52% | Yes (Exempt) |
| Illinois (IL) | 6.25% | 2.65% | 8.90% | Reduced 1% |
| Oregon (OR) | 0.00% | 0.00% | 0.00% | No Sales Tax |