For the first few years, the wildlife fund was the only cause taxpayers could donate to through their tax returns. Legislators gradually added others — mostly in the last decade. On 2006 state tax forms, there were 18 causes.
Officials at the Oklahoma Tax Commission said some of the donation drop-off may be because the checkoff boxes are no longer on the actual return.
Officials explained there are just too many to list on the actual return. Instead, the boxes are now on a separate schedule.
Taxpayers may overlook that tax schedule when completing their returns, said Paula Ross, a Tax Commission spokeswoman.
Also, in past years, the Tax Commission puts ads in the tax instructions reminding taxpayers they could donate part of their refunds.
"Now, they're so numerous, to be fair, we don't pick out any to put ads regarding,” Ross said.