Follow the steps to fill out the OH IT 1040 accurately.

1. Press the ‘Get Form’ button to access the OH IT 1040 form and open it in the editor.
2. Begin by filling out the primary taxpayer's Social Security Number (SSN), indicating if they are deceased, and select the sequence number.
3. If applicable, enter the spouse’s SSN and names for both the primary taxpayer and spouse, including middle initial and last name. Indicate the school district and complete the address fields using upper case letters.
4. Select the appropriate residency status for both the primary taxpayer and spouse, choosing either 'resident' or 'part-year resident'.
5. Choose the filing status that matches the federal income tax return, such as 'single', 'married filing jointly', or 'head of household'. Provide any required dependent information if someone can claim you or your spouse as a dependent.
6. Proceed to report your federal adjusted gross income and any additions or deductions from your Ohio Schedule of Adjustments.
7. Calculate the Ohio adjusted gross income and the exemption amount based on the number of exemptions claimed.
8. Next, determine the Ohio income tax base, and if applicable, provide details on taxable business and nonbusiness income.
9. Calculate your total tax liability, including any nonrefundable credits, and enter the total Ohio tax due or overpayment, if applicable.
10. Sign the return, indicating your phone number, dates, and preparer's name if applicable. Make sure to review the form for accuracy before submission.

Complete your filing by submitting the OH IT 1040 online today.