Frequently Asked Questions

The Ohio Department of Taxation has compiled a list of frequently asked questions covering many different categories.

To view the questions, click on the "Select Category" bar and then click on the category you are interested in.  A list of questions will appear pertaining to that category. Then click on the question you are inquiring about and the answer will appear.

What should I do if I am unable to register for Income Tax Online Services?

If you are filing an Ohio income tax return and are unable to register for Income Tax Online Services, you will be required to fax your Social Security card or IRS ITIN assignment letter, and at least one additional piece of valid identification which must include your date of birth. Acceptable identification includes a valid driver's license, state issued identification card, U.S. passport, or military ID (copy of both front and back sides required). If you are attempting to file a joint return, please include the documentation requested above for both parties. Please enlarge and lighten the valid identification that includes your date of birth. If you filing an Ohio income tax return for the first time, you are not eligible to use Online Services.

Fax your request and necessary information to our online registration group at 1-206-600-6113. In the event we need to contact you, please include your email address and/or a daytime telephone number.

Allow up to 24 hours after submitting your information before attempting to register again online. If you have further questions about the registration process, email us at or call us at 1-800-282-1780 during normal business hours, 8:00 am – 5:00 pm Monday through Friday, excluding holidays.