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

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

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

The Illinois Supreme Court on Thursday ruled in favor of Rolling Meadows in its three-year legal dispute with Arlington ...

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

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

The Illinois Department of Revenue also grants a six-month extension. By getting a federal extension, you can automatically have an extension to file in Illinois. How do I request an extension to ...

While Illinois ranked low for federal dependence on the government, the state ranked among the worst for having high tax ...

As agencies scramble to comply with President Trump's Jan. 20 order terminating remote work, employees say the process has been marked by confusion, changing guidance, and frustrating conditions.

The measure says retailers must register with the Department of Revenue, collect the tax ... programs like firefighter ...