An individual taxpayer may designate on the tax return of that individual a contribution to the nongame wildlife fund of any amount of one dollar or more to be added to tax liability or     deducted from any refund that would otherwise be payable by or to the individual. On the individual state income tax return the tax commissioner shall notify the individual of this optional contribution. The amount of these optional contributions must be transferred by the tax commissioner to the state treasurer for deposit in the nongame wildlife fund for use as provided in section 20.1-02-16.2.