What does IRS stand for?

Internal Revenue Service

IRS stands for the Internal Revenue Service of the United States Government. It the organization responsible for collecting taxes in the United States.

The IRS is a bureau of the Department of the Treasury and under the direction of the Commissioner of Internal Revenue. It employs roughly 80,000 government workers.

The annual IRS federal tax filing deadline is April 15, though it may be few days later if April 15 lands on a weekend or holiday. In 2023, for example, the last filing date is April 18, because the 15th is a Saturday, the 16th is Sunday, and the 17th is Emancipation Day.


If you're doing contract work, don't forget to make estimated tax payments to the IRS!
Official IRS tax forms
Official IRS tax forms

Related Slang


Updated April 15, 2023

IRS definition by

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