Income Tax Online Services - Registration May 13, 2020 | Agency The Ohio Department of Taxation has implemented increased security measures to protect Ohioans and the state from identity theft and tax fraud. As a result taxpayers will need the following information in order to register. Issue date from an Ohio issued Driver's License or State ID OR 2021 Ohio Withholding amount (from Ohio IT 1040 line 14) What should I do if I am unable to register for Income Tax Online Services? If this is your first time filing an Ohio income tax return or School District Income Tax return, you are not eligible to file electronically using Ohio’s Income Tax Online Services for the current tax year. You may file electronically through a 3rd party software vendor or file by paper. Paper forms and instructions can be accessed on our forms page. If you are not a first time filer and are unable to register, you may call us to verify eligibility to use our system at 1-800-282-1780 (1-800-750-0750 for persons who use text telephones (TTYs) or adaptive telephone equipment) during normal business hours, 8:00 am-5:00 pm Monday through Friday, excluding holidays.