Individuals
IRS Understanding Taxes
Developed as an online learning source for students, this glossary simplifies the most common tax terms.
Kiplinger Tax Terms You Should Know
More than 100 tax terms you should understand
Businesses
IRS Tax Information for Businesses
A comprehensive tax resource from the IRS for businesses and those who are self employed
Entrepreneur Magazine’s Tax Terms for Business
Business terms from Entrepreneur Magazine
Investopedia Tax Terms
Investopedia is one of the country’s largest educational websites on investing and financial news.
Non-Profits
IRS for Charities
Comprehensive resource of IRS requirements for charities and other non-profits.
IRS Basics for Tax Exempt Organizations
The IRS has an entire website dedicated to organizations exempt from withholding of federal income tax.