Other
Tax Foundation: State and Local Sales Tax Rates, 2021
This explanation of state and local sales taxes is accompanied by charts which show the state sales taxes in all the states in 2021, along with information about local sales tax rates.
Other
State Taxes
This site provides tax information about each state in the United States simply by clicking on the name of the state. Links further down the page can be used to find specific state taxes, such as payroll and sales taxes.
Wolters Kluwer
Small Business Guide: Your Sales Tax Obligations
This site gives an overview of sales taxes. Links on the page provide additional information. Click on "What Are Sales Taxes" for an explanation of what kinds of sales are subject to sales taxes. There is also a link for sales tax...