Follow the steps to complete your form online.

1. Press the ‘Get Form’ button to access the OH SD 100 form and open it in the editor.
2. Begin by entering the primary taxpayer's Social Security Number in the designated field. If the primary taxpayer is deceased, check the box provided.
3. If you are filing jointly, also provide the spouse's Social Security Number, first name, middle initial, and last name in the appropriate fields. Indicate if the spouse is deceased.
4. Fill in the address fields, including street address, P.O. Box (if applicable), ZIP code, city, state, and, if applicable, foreign mailing details.
5. Select your filing status by checking the appropriate box: single, head of household, qualifying surviving spouse, married filing jointly, or married filing separately.
6. Complete the schedule of school district residency. For each school district where you or your spouse resided, enter the school district number, dates of residency, days as a resident, and residency factor.
7. Input your Ohio adjusted gross income as outlined on line 3 of the Ohio IT 1040 form.
8. Add the business income deduction add-back from the Ohio Schedule of Adjustments to arrive at the modified adjusted gross income.
9. Determine the exemption amount from line 4 of the Ohio IT 1040 and subtract it from your modified adjusted gross income.
10. If you are a resident of taxing school districts, complete the applicable schedule(s) to calculate your total tax amounts.
11. Review and enter information for lines concerning school district tax liability and total payments.
12. Sign the form where required, including the date and preparer's information if applicable.
13. Once all fields are completed, save your changes, then you can download, print, or share the completed form.

Complete your OH SD 100 form online today for efficient and accurate filing.