The Cook County Board is expected to consider a measure Wednesday to hike the county's sales tax by 1 percentage point.
Chicago's sales tax would go up from 9.25 percent to 10.25 percent if commissioners OK the increase, backed by Board President Toni Preckwinkle.
Much of the revenue from the sales tax hike, if approved, would go into the county's public employee pension system.
Preckwinkle had campaigned back in 2010 to roll back a penny on the dollar sales tax increase passed by former Cook County President Todd Stroger in 2008. That increase was phased out by 2013.
If the newest sales tax increase gets approved, Preckwinkle has said there is a possibility that it could get rolled back if the Illinois General Assembly acts on the county's pending pension reform legislation.
Some Cook County commissioners, meanwhile, are proposing amendments to the latest sales tax measure that could thwart the plan. One of the amendments, for example, would add a one-year sunset provision to the sales tax measure.
UPDATE (4:38 p.m.): The Cook County Board on Wednesday voted 9-7 to hike the county's sales tax, which will go up 1 percentage point starting January 1.