Internal Revenue Service (IRS)

Business-Specialty Tax Line 

MO

800-829-4933

Federal Tax Forms 

MO

800-829-1040

Federal Tax Violations 

MO

800-829-0433

National Taxpayer Advocate 

MO

877-777-4778

TTY 

MO

800-829-4059

Tax Exempt & Government Entities 

MO

877-829-5500

Tax Forms Only 

MO

800-829-3676

Tele-Tax Information Line 

MO

800-829-4477

Tax Exempt - Government Entities 

MO

877-829-5500

Tax Fraud Hotline 

MO

800-829-0433