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.

Is Ohio I-File secure?

Yes, it's secure. The Ohio Department of Taxation is using the latest Internet security technology to secure the transactions.

Security Protocols:

Ohio I-File has many layers of security. This includes processes and procedures to stop unauthorized access, validate appropriate participants, and ensure the integrity of the system. All transmissions to and from Ohio I-File use Secure Sockets Layer (SSL) technology, which is the industry-standard protocol for secure, Web-based communications.


The Ohio I-File application uses 128-bit SSL encryption on data passing from the user to the application. This is the highest level of encryption generally available today. The information cannot be read without the specific decryption key.