Illinois Department of Revenue fax numbers
Each number below is copied from an official Illinois Department of Revenue page or form, with a link to the source and the date we verified it.
- Illinois Form IL-2848 fax number (power of attorney)
Where to fax Form IL-2848, Power of Attorney, to the Illinois Department of Revenue (IDOR).
- IDOR power of attorney fax 217 782-4217
Verified October 21, 2026
- Illinois Form IL-56 fax number (fiduciary notice)
Where to fax Form IL-56, Notice of Fiduciary Relationship, to the Illinois Department of Revenue.
- IDOR power of attorney unit 217 782-4217
Verified October 22, 2026
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