Department / Purpose Phone Number Notes
IRS Practitioner Priority Service (PPS)๐ (866) 860-4259 For tax professionals to speak directly to IRS agents about client issues.
IRS E-Help Desk (EFIN / e-File Assistance)๐ (866) 255-0654 For issues with EFIN, software registration, or IRS e-file.
IRS Business & Specialty Tax Line๐ (800) 829-4933 For EIN, business accounts, and tax transcripts.
IRS Individual Tax Line๐ (800) 829-1040 For general taxpayer inquiries and refund status.
IRS Refund Hotline (Whereโs My Refund)๐ (800) 829-1954 Automated refund status system.
Treasury Offset Program (TOP / Refund Offset Line)๐ (800) 304-3107 To check if a refund was offset by federal or state debt.
Identity Protection PIN Help Desk๐ (800) 908-4490For IP PIN issues or lost PIN retrieval.
Taxpayer Advocate Service๐ (877) 777-4778 For unresolved or hardship cases.
IRS Practitioner Priority Fax (PPS Fax)๐ (855) 214-7522 For document submissions to PPS representatives.
IRS CAF Unit (Power of Attorney Processing)๐ (801) 620-4249 To verify CAF status or confirm 2848/8821 filings.
IRS Transcript Delivery System (TDS)๐ (800) 829-1040 Request transcripts via e-Services.