Following methods: • MyTax Illinois — Upload it as a single PDF file using. mytax.illinois. • Email — Attach it as a single PDF file and send to. REV.POA@illinois. • Fax — Send it as a single fax to 217 782-4217. ILLINOIS DEPARTMENT OF REVENUE. POWER OF ATTORNEY FORMS 3-252. PO BOX 19001.
IL-8453. Illinois Individual Income Tax Electronic Filing Declaration.