Ohio Department of Taxation officials say anti-fraud efforts will delay refunds to taxpayers.
Ohio tax officials say they've intercepted a record amount of money in fraudulent state income tax filings - 18 times more than the average discovered in other years.
State casino tax revenue over the past year fell nearly 12 percent short of projections.
An Ohio Department of Taxation report shows since 2012 the amount of tax credits given to businesses promising to create and retain jobs has been rising.
The Ohio House has approved a bill requiring business and individual taxpayers to be notified of overpayments.
Legislation proposed by statehouse Democrats would allow same-sex couples to file joint state tax returns.
Ohio Inspector General Randall Meyer says the state department of taxation has failed to return more than 30 million dollars in business tax refunds to companies that properly requested the money.