Phone Number of 
Internal Revenue Service Department of Treasury is 
(202) 283-1710 .
Internal Revenue Service (IRS) is the revenue service under the jurisdiction of
 Federal Government of the United States. It is an agency authorized by
 Department of Treasury and headed by the
 Commissioner of the Internal revenue. Functions of the
 Internal Revenue Service include collection of taxes and its law enforcement.
 Daniel I. Werfel is the acting
 Irs Commissioner and he administers various tax related issue. IRS also conducts training programs to the volunteers and provides tax assistance in filing the tax. Volunteers will be given instructions, e-course study material, and introduction to usage of software for tax preparation.
 
Internal Revenue Service Department of Treasury Customer Support Service Phone Number 
The customer support phone number of Internal Revenue Service Department of Treasury is 
(202) 283-1710 (Click phone number to call).
The postal and 
official address, email address and 
phone number (
helpline) of 
Internal Revenue Service Department of Treasury Service Center and 
Internal Revenue Service Department of Treasury customer phone number  is given below. The  
helpline of Internal Revenue Service Department of Treasury customer phone number may or may not be 
toll free.
Click Here To View  Internal Revenue Service Department of Treasury Customer Service Phone Numbers