Rate used to calculate taxes
payable in the next new year when it is not available use the prior year tax
rate. The tax rates each
calculated by the county clerk's office. They are usually available by May
of the current calendar year the tax bill is due. In Will County the
1st half of a Real Estate Tax bill in due in June and the 2nd half is due
in September. A current year Sale Price multiplied by the current
year Effective Tax Rate is one way to estimate the amount of a tax bill.
When the current effective tax rate is not available use the prior year Effective Tax Rate to calculate the estimated tax bill.