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.

Who do I contact if I have questions about the electronic filing program?

You may contact the Ohio Department of Taxation's electronic filing help desk at (614) 466-0197 for questions regarding the federal/state e-file program or any of Ohio’s electronic filing alternatives individual taxpayers.

Business taxes including commercial activity tax (CAT), sales tax and employer withholding are filed through the Ohio Business Gateway. For assistance with business taxes, please call 888-405-4039. For assistance with the Ohio Business Gateway, please call 866-644-6468.