Yes, it is too late to appeal your assessment. We finalize our assessments around the end of each year. Final assessments are certified to the Dept. of Revenue and forwarded to the Rock Island County Clerk to begin the process of calculating the tax bills. At that point, our files are closed and it is too late to change assessments. However, it is possible an error has been made in the calculation of your tax bill. For example, an exemption you qualify for may not have been applied on the bill. If you suspect an error, contact our office. It may be possible to correct the bill. An incorrect judgment or opinion on the value of your property is not justification for a corrected bill.