Where Your Property Tax Dollar Goes: A DuPage County Explainer
Your tax bill is the end of a long paper trail — assessments, levies and equalization — and most of the money never touches county government at all.
Few documents in Naperville life generate more questions than the property tax bill. It arrives as a single number, but it is actually the end product of three separate processes run by different offices — and understanding which office owns which step is the difference between a fixable problem and a frustrating phone tree.
Step one is assessment: what your property is worth for tax purposes. In DuPage County, township assessors value properties, and the county's Supervisor of Assessments oversees the process. If you believe your assessment is wrong, the remedy is an appeal — ultimately to the county Board of Review — and the evidence that matters is the value of comparable properties, not the size of your bill.
Step two is the levy: how much money each taxing body decides it needs. School districts, the city, the park district, the fire protection and library districts and the county itself each set their own levy. In a typical Naperville bill, schools account for the largest share by far, which is why school budgets draw the crowds at public hearings each fall.
Step three is arithmetic. The county clerk divides the levies by the total assessed value to produce tax rates, a state equalization factor adjusts values across the county, and the county treasurer mails the bills and collects payment in two installments. Exemptions — most commonly the homeowner exemption and senior citizen exemptions — reduce the taxable value of a primary residence, and they are worth checking: an exemption you qualify for but never claimed is money left on the table.
The accountability question, then, is not one question but three. Think your home is overvalued? That is the assessor and the Board of Review. Think the total take is too high? That is the levy votes of a dozen local boards, each with public meetings. Think you are missing a break the law allows? That is the treasurer's exemption list. Naperville Riverwalk News will keep following each of the three.
