(AP) – A Missouri billionaire is helping finance a Kansas group’s efforts to eliminate state income taxes.

An associate of Rex Sinquefield said Tuesday the St. Louis businessman contributed to Kansans for No Income Tax. The associate did not disclose the donation’s amount.

The Kansas group announced plans last month to push for phasing out the state’s income taxes. It has scheduled a two-day bus tour to five cities, starting Friday in Topeka.

Sinquefield has given millions of dollars to conservative candidates and causes in Missouri. He supports efforts to eliminate Missouri’s income tax and replace it with a higher state sales tax on a wider variety of goods and services.

The Kansas group’s president, Ashley McMillan, told The Star it has many donors.