Illinois Tax Proration Calculator
Calculate real estate tax prorations for Illinois properties (taxes paid in arrears)
Tax Information
Enter the property tax details and closing information
Calculation Results
Tax proration breakdown for the closing
Enter tax information and closing date to calculate proration
About Illinois Tax Proration
Paid in arrears: Since Illinois property taxes are paid in arrears, tax proration ensures that the buyer is fairly compensated for the tax bills they will receive after the closing, for the period in time in which the seller still owned the property.
Two installments: The property tax bills are typically paid in two installments, usually due in the spring and fall of the following year. In many counties, the first installment is due around June 1st and the second around September 1st.