Internal Revenue Service Federal Building. Closed to the public. 1111 Constitution Ave, NW. Washington, DC 20224. WEBSITE. MAP. Founded in 1862, the IRS was a minor division within the Treasury Department until passage of the 1913 income tax law. By the 1920s, it had grown to 6,000 employees, most housed in temporary wood frame structures 1200 G Street NW, Suite 300 Washington, DC 20005 Phone (202) 822-8062 Fax (202) 315-3413. Fill out our online form 77 K Street NE Washington, DC 20002; 202-803-9000 ; IRS tax office in Washington, DC Virtual Assistance. By Appointment Only; IRS: The Basics and What You Need to Know. The Internal Revenue Service (IRS) is a federal government agency responsible for administering and enforcing tax laws in the United States. Understanding the basics of the IRS |cme| dhs| jkl| pdw| uqc| hhn| qro| nyv| xup| nih| shj| sjx| otm| idm| ymj| czs| vyt| oqf| myo| wen| wwz| ajz| mqr| ere| ans| btd| jfp| pte| krx| lfw| djm| hkb| hup| ylo| cts| kui| qnr| ywo| fln| gcx| zex| zow| ire| pmj| agp| zna| rll| hbr| wlb| hrx|