Charities operating in the State of Ohio are required to file a one-time registration and then submit annual reports with the Ohio Attorney General's Office. You'll also need to submit: • A copy of the IRS Determination Letter granting tax-exempt status.Please refer to the information release for Nonprofit Charitable Organizations on the tax.ohio. During registration your organization will be required to submit its creating documents and the Federal Tax Exemption Determination Letter. Ohio Nonprofit Compliance. Required annual filings. If you want to apply for federal tax exemption for your charity or nonprofit, complete form 1023 and send it to the IRS with the required attachments and fee. The organization's IRS Form 990 return can be viewed on Guidestar. A free registration process is required to access the reports. Hi Paulette, Typically, you only need to provide Form W-9 upon request.