(Crain's) — Cook County commissioners on Friday set dates for when the remainder of a controversial sales-tax hike will be rescinded.

In a 12-5 vote, the board decided that 0.25% of the sales tax hike will be repealed by Jan. 1, 2012, and the final 0.25% by Jan. 1, 2013, according to news reports. A 0.50% rollback was enacted July 1.

Friday's decision would wipe out in two years the 1% increase that former board President Todd Stroger pushed through, forcing consumers to pay a total of 10.25% in sales tax at Chicago retailers. The 10.25% rate was the highest in the nation.

The repeal was one of the promises Toni Preckwinkle made during her successful campaign for Cook County Board president.

Jerry Butler, John Daley, John Fritchey, Jesus Garcia, Elizabeth “Liz” Doody Gorman, Gregg Goslin, Edwin Reyes, Timothy Schneider, Peter Silvestri, Larry Suffredin and Jeff Tobolski voted in favor of the repeal, according to the Chicago Sun-Times.

William Beavers, Earlean Collins, Joan Patricia Murphy, Deborah Sims and Robert Steele voted against it, the paper said.