Illinois' Washington County sees a tentative property assessment equalization factor change to 0.9666, potentially affecting ...

The deadline to file taxes is less than a month away. Here's everything you need to know about federal and state taxes, ...

CHICAGO The Illinois Department of Revenue (IDOR) is advising taxpayers to be vigilant when preparing tax returns in order to ...

Arlington Heights had filed a complaint against Rolling Meadows in Cook County circuit court seeking to get its money back ...

The Illinois Department of Revenue reminds taxpayers of common tax return errors that could lead to delays, rejections or ...

In a unanimous opinion delivered by Justice O'Brien, the Illinois Supreme Court affirmed that the Illinois Department of Revenue (IDOR) has ...

The Illinois Supreme Court ruled in favor of Rolling Meadows in a tax dispute with Arlington Heights over revenue from Cooper ...