Ohio SD 100 I-File is a convenient way to file your Ohio school district income tax return. But we recognize that it may seem daunting at first...so we designed this page to help.

Below are the most-commonly asked questions about Ohio SD 100 I-File, followed by an important note regarding the registration process. Finally, there is a link to the complete list of I-File frequently asked questions.

We hope your enjoy your fast, free, and secure filing experience.

• Who is eligible to file the SD-100 return?
• What do you need before you begin to use Ohio I-File for your school district return?
• What are the benefits to using Ohio I-File?

NOTE: If you are a first-time tax filer in Ohio, or you previously filed with a non-Ohio address, there are a couple of steps you must complete before you can electronically file. Please fax at least two pieces of ID (driver's license, state identification card, Social Security card, U.S. passport or military ID) including your birth date which the department will confirm. Once verified, your information will be entered into the Ohio tax system and you will be able to register on Ohio I-File. To initiate the registration process, fax your request and necessary information to our I-File registration group at 1-206-600-6113 or call us at 1-800-282-1780. In the event we need to contact you please include a daytime telephone number or email address. 

For a complete look at Ohio I-File information we recommend you read the entire list of  Ohio I -File Frequently Asked Questions before you get started.