Click the link below to search for unclaimed funds, claim them, and get your claim form. STEP 1: Navigate to missingmoney.You can also file an extension. How do I fill out the claim form? Please make checks and money orders payable to "Ohio Secretary of State. " Send forms to the P.O. Box Number listed on the form. If you need more time to file your Ohio tax return, file a federal extension. When you later file your Ohio return, answer Yes to the question. When mailing a document to our office, please submit a check or money order made payable to "Ohio Secretary of State.