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  • © Marble Technology Inc, 2026.
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    1. Tax Library
    2. US
    3. Internal Revenue Manual
    4. Part 21
    5. Chapter 3

    Chapter 3 - Taxpayer Contacts

    Browse Chapter 3 - Taxpayer Contacts
    in: Chapter 3 - Taxpayer Contacts
    Previous Chapter 2 - Systems and Research ProgramsNext Chapter 4 - Refund Inquiries
    Section 1 - Taxpayer Contacts Resulting From Notice IssuanceSection 10 - Practitioner Priority Service (pps)Section 11 - Information Returns Reporting ProceduresSection 3 - Incoming and Outgoing Correspondence/lettersSection 4 - Field AssistanceSection 5 - Taxpayer Inquiry Referrals Form 4442Section 6 - Forms and Information RequestsSection 7 - Processing Third-party Authorizations Onto the Centralized Authorization File (caf)Section 8 - Tax Exempt/government Entities (te/ge) Customer Account Services (cas) Telephone OperationsSection 9 - Processing Reporting Agents File Authorizations
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