The Illinois State Board of Equalization (1867-1919), was responsible for adjusting county assessed property values to correspond with assessed values in other Illinois counties. The board met annually to examine real and personal property assessment abstracts prepared by the Auditor of Public Accounts from county clerk assessment returns. After examining and comparing each county's assessed valuations, the board determined which valuations were inconsistent with statewide valuations, and set a uniform rate for each county's real and personal property valuation adjustments.
The board's equalization authority was extended to cover railroad and telegraph company property; and capital stock of all companies or associations incorporated under Illinois law (1872). Manufacturing, mercantile, coal mining, printing, publishing, and livestock companies and associations had their capital stock exempted from Board review (1905). When the State Board of Equalization was abolished (1919), its powers and duties were transferred to the newly created State Tax Commission.
From the description of Proceedings of annual board meetings, 1867-1908. (Illinois State Archive). WorldCat record id: 37391589
