The Illinois Department of Revenue announced on Mar. 11 that Macon County has been assigned a final property assessment equalization factor, or multiplier, of 1.0000 for the 2025 tax year, according to Director David Harris.
The equalization factor is used to ensure uniform property assessments across counties in Illinois, which is important because many local taxing districts overlap county lines. Without this process, taxpayers with similar properties could face unequal tax burdens.
Under state law passed in 1975, most property in Illinois should be assessed at one-third of its market value. In Macon County, assessments are currently at 33.25% of market value based on sales from the past three years. The new multiplier matches last year’s figure and was finalized after a public hearing following the tentative factor issued on December 10, 2025.
The department said the equalization factor is determined by comparing recent sale prices to assessed values over a three-year period. If average assessments match one-third of market value, the multiplier is set at one; if they are higher or lower than this benchmark, the multiplier adjusts accordingly.
A change in the equalization factor does not automatically mean that total property tax bills will rise or fall. Local taxing bodies determine tax bills based on their annual funding requests. The assessed value only determines each taxpayer’s share of the overall burden and is not changed by the multiplier itself.
The Illinois Department of Revenue works to foster an inclusive environment that values diversity and equity for employees and customers, as stated on its official site. The agency focuses on fairly administering state tax laws and efficiently collecting revenues while providing accurate and timely information, according to its official website. It also serves as a state agency dedicated to promoting diversity and equity in its operations according to its official site. The department oversees collection of state taxes and delivers reliable financial information according to its official website, operating within state taxation and revenue management as detailed on its official website.
