Although the law is commonly called “tax caps,” the Property Tax Extension Limitation Law (PTELL) does not cap either individual property tax bills or individual property tax assessments. The limit is intended to slow the growth of revenues to taxing districts when property values and assessments are increasing faster than the rate of inflation.
To understand PTELL, it’s important to first understand property taxes, including how they are assessed and used.
Property taxes are raised and spent locally. According to the 1997 Illinois Property Tax Statistics, 1996 Extensions (collected in 1997) totaled $14,051,445,772.
The total for residential property was $7,814,278,360 (55.61%). Commercial property totaled $3,900,871,386 (27.76%). Industrial property was next in line, at $1,724,778,611(12.28%). Farm property totaled $546,750,437 (3.89%). Railroads and minerals totaled $64,766,978 (.46%).
| Local government unit | Property tax % |
| Schools | 57.48% |
| County government | 9.48% |
| Townships | 2.77% |
| Cities | 13.24% |
| TIF districts | 2.03% |
| Special districts (e.g., parks, sanitary districts, community colleges) | 15.2% |
Illinois has more than 6,800 units of local government. Property taxes finance a wide variety of services that citizens generally expect local governments to provide, including education, water and sewage services, health and sanitation, police and fire protection, roads and bridges, parks and recreation, library services, and others. Although the property tax is the major source of tax revenue for Illinois local government, not all local governments are equally dependent upon property tax revenues. For example, municipalities rely less on the property tax than other types of government because they have access to other revenue, like sales taxes. School districts are most dependent because they have no other source of local tax revenue. As a source of funds for local government, the property tax is considered to be more stable through the business cycle than either the income or the sales tax. Therefore, the property tax makes it easier for government bodies to gauge revenues and budget for services.
The mechanics of assessing and collecting property taxes is a lengthy one which involves several steps carried out by a number of different local government offices over a 30-month period:
If PTELL is approved by the voters in November 2000, the county clerk will notify all taxing districts located in the county (as well as the Illinois Department of Revenue) that the referendum was held and approved by the voters. For taxing districts located entirely within a county, the PTELL applies to levies made in 2001 that are payable in 2002.
By state statute, DuPage, Kane, Lake, McHenry, and Will counties became subject to PTELL for the 1991 levy year and Cook County was added for the 1994 levy year. Public Act 89-510 allows county boards to put the issue before the voters by placing a referendum on the ballot. Home rule districts (primarily communities over 25,000 in population) are exempt from the law.
Since 1996, 28 counties have approved PTELL. Nine have voted it down.