Online Services - Ohio SD 100 I-File

Introduction to Ohio SD 100 I-File

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 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 you enjoy your fast, free, and secure filing experience.

Unable to register: If you are unable to register, you will be required to fax your social security card or IRS ITIN assignment letter and at least one additional piece of 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). To initiate the registration process, fax your request and necessary information to our online registration group at 1-206-600-6113. If you have further questions about the registration process, Email Us or call us at 1-800-282-1780. In the event we need to contact you please include your email address and/or a daytime telephone number. Allow up to 24 hours before attempting to register after submitting your information.

Note: Due to security reasons we cannot change or add your name, social security number or date of birth from a telephone call. You must fax the required information to the number listed above.


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.