Follow the steps to successfully complete the IT-8453OL online.

1. Press the ‘Get Form’ button to obtain the IT-8453OL form and open it in your preferred editor.
2. Fill in your personal information at the top of the form, including your first name, middle initial, last name, and social security number.
3. If applicable, provide your spouse’s first name, middle initial, last name, and social security number.
4. Enter your street address, city, state, and zip code in the designated fields.
5. Include your daytime telephone number for contact purposes.
6. In Part I, input the federal adjusted gross income and Indiana taxable income from the corresponding lines of your tax return.
7. Complete line 3 with the total Indiana tax based on your tax return.
8. Document the total state tax withheld and total county tax withheld on the form as per the relevant lines from your tax documentation.
9. Input total Indiana tax credits, refund amount, and the amount you owe, as relevant from your tax returns.
10. In Part II, if you wish to have your refund directly deposited, fill in the routing number and account number, and select the type of account.
11. If your refund will go to an account outside the United States, mark the appropriate box.
12. In Part III, sign and date the form, affirming the information provided is accurate.
13. Once completed, keep the IT-8453OL for your records. You do not need to mail it unless specifically requested.

Start filling out your IT-8453OL online today to ensure a smooth tax filing process.