PHONE NUMBERS Independent Accountants Association of Illinois800.222.2270 fax: 800.313.2270
Find An Accountant in Illinois (Call IAAI above)800.222.2270 Internal Revenue Service - General Questions800.829.1040 Internal Revenue Service - Business Questions800.829.4933Internal Revenue Service - Identity Theft Questions800.908.4490
Internal Revenue Service - Practitioner Questions866.860.4259 Internal Revenue Service - PTIN Questions877.613.7846 Internal Revenue Service - RTRP Exam Questions855.477.3926