IRS
n. countablen. Stands for Internal Revenue Service. The government agency in the United States that collects taxes. You deal with them when you file your yearly tax forms or pay what you owe the government.
n. Abbreviation for Internal Revenue Service. A United States federal agency responsible for the collection of taxes and enforcement of internal revenue laws. Often used with the definite article.
I need to send my tax return to the IRS by April.
The IRS recently updated its online portal to help citizens track their tax refunds more efficiently.
Small business owners must maintain meticulous financial records to ensure they remain in compliance with the complex regulations enforced by the IRS.
Typically used with the definite article ('the IRS'). While technically a countable noun referring to the agency, it is almost always treated as a singular proper entity.