Either branch of the General Assembly may propose amendments to the Ohio Constitution. It will take several months for the Department to process your paper amended return.5 Should I file my amended Ohio return(s) at the same time I file my amended federal return with the IRS? Free guide, filing instructions, and forms to file an amendment for corporation articles of incorporation with the Ohio Secretary of State. The authority to amend the Constitution of the United States is derived from Article V of the Constitution. States offer multiple paths for amending their constitutions, which are much easier to change than the federal Constitution. Amend Your Ohio Tax Return. This legal template is specific to Ohio state in the USA and relates to an amendment contract. Among other cherished values, the First Amendment protects freedom of speech. Learn about what this means.