And just slightly over the average of 19% that other states are levying, according to a report from Bloomberg Tax. The budget doubles the tax on sports betting to be paid by casinos and teams running sportsbooks with mobile companies. Just over a month after Ohio’s sports betting launch, state Governor Mike De Wine is seeking to double the tax rate from 10% to 20%, an increase included in his biennial executive budget proposal for the 2024-25 fiscal years.