Getting married in Ohio? A prenuptial agreement lets you set clear expectations about property, debt, and (where allowed) support—so you’re not relying only on default state rules.
Key points
- Prenups are recognized if they’re voluntary, in writing, and signed by both partners.
- Courts enforce prenups if entered voluntarily, with full disclosure, and if fair when signed.
- Ohio requires prenups to be in writing, signed by both parties, and executed before marriage. Notarization is not mandated but strongly recommended.
Are prenups legal in Ohio?
Ohio requires prenups to be in writing, signed by both parties, and executed before marriage. Notarization is not mandated but strongly recommended. Full disclosure or waiver is necessary. Independent legal counsel is not required but recommended.
What makes a Ohio prenup enforceable?
Courts enforce prenups if entered voluntarily, with full disclosure, and if fair when signed. While there’s no formal “second look,” gross unfairness may be reviewed.
What you can—and can’t—include
May waive property rights, alimony, and inheritance; child-related clauses are unenforceable.
Simple process
Provide full disclosures, sign early, and notarize for added protection.
Next steps
General information only, not legal advice. Laws and cases change—consider speaking with a local attorney about your situation.
Browse other states in our State Guides hub.

