Taxpayer Services | Internal Revenue Service
3539 Southern Hills Drive, Sioux City, IA 51106
Internal Revenue Service - Sioux City
Eligibility
Open to anyone
Required documents
Varies by service
Websitehttps://www.irs.gov
Application process
Call for information or visit for services
Fees
None
Service area
NE
IA
Information about tax accounts. Processes applications for Federal Tax Identification Numbers.
Taxpayer Advocacy Services provide free, independent, and confidential tax assistance to taxpayers unable to resolve their tax problems through normal channels or individuals experiencing a hardship. Helps individual and business taxpayers resolve problems with the IRS.
Last Assured
07/31/2025
Providing organization
Internal Revenue Service
Federal tax agency.