Gov. Sam Brownback is preparing to sign legislation making additional cuts to Kansas income taxes over the next five years.

The Republican governor scheduled a signing ceremony Thursday in Overland Park, with another ceremony later in the day in Wichita.

The changes in income tax rates include an adjustment in the standard deduction for personal income taxes.

The legislation also addresses the state sales tax, which had been scheduled to drop in July from 6.3 percent to 5.7 percent. Lawmakers voted instead to trim the rate slightly to 6.15 percent, which will raise an estimated $777 million over five years.

Legislators approved the measure this year after passing massive income tax cuts in 2012. Brownback has said he hopes eventually to eliminate the state income tax entirely.