Internal Revenue Service

American  

noun

1. the division of the U.S. Department of the Treasury that collects internal revenue, including income taxes and excise taxes, and that enforces revenue laws. IRS

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Internal Revenue Service ¹ Cultural  

1. A federal agency, part of the Department of the Treasury, that collects most federal taxes, including income and Social Security taxes.

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Internal Revenue Service ² Cultural  

1. Part of the United States Department of the Treasury. The IRS is responsible for the collection of all federal taxes, except customs duties.

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Example Sentences

See Examples For:

Internal Revenue Service

Hedge-fund managers are losing their main strategy for avoiding a 3.8% federal self-employment tax after an eight-year-long Internal Revenue Service campaign yielded government victories in appeals courts.

From The Wall Street Journal ● Oct. 1, 2026

This is how the Internal Revenue Service responds to a change in a taxpayer’s filing status: When one spouse dies, the survivor often ends up paying higher taxes on lower income.

From MarketWatch ● Sep. 22, 2026

Some private nonprofits and public institutions already report donor names to the Internal Revenue Service for gifts of at least $5,000, but the IRS is barred from disclosing that information to the public.

From The Wall Street Journal ● Sep. 7, 2026

With hardship withdrawals, an employee has to prove an “immediate and heavy financial need” under Internal Revenue Service rules.

From MarketWatch ● Sep. 3, 2026

It was the night of April 15, and the Internal Revenue Service had just changed a rule.

From "Freakonomics: A Rogue Economist Explores the Hidden Side of Everything" by Steven D. Levitt

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