0 a date by which something must be done according to the IRS, usually the date by which a tax return (= document reporting income so taxes can be calculated) must be sent:
Taxpayers are advised to file their taxes by the April 15 IRS deadline.
An important IRS deadline is fast approaching for employers.
NYA ORD
European
May 10, 2021
DAGENS ORD
Shimmer
IRS deadline