What to Put in a Prenuptial Agreement in Ohio
Last updated: February 2026
A prenuptial agreement gives both spouses the ability to define their financial relationship on their own terms rather than leaving those decisions to Ohio’s default property division rules. While no one enters a marriage expecting it to end, a prenup provides clarity and protection that benefits both parties—whether the marriage lasts a lifetime or not.
Ohio courts will generally enforce a prenuptial agreement that meets the requirements established in Gross v. Gross (1984) and codified under Ohio Revised Code § 3103.05. The agreement must be entered into voluntarily, both parties must provide full financial disclosure, and the terms cannot promote or encourage divorce. When those standards are met, a prenup can override many of Ohio’s default rules on equitable distribution, spousal support, and inheritance rights.
What Are the Benefits of a Prenuptial Agreement?
A prenup protects both spouses from unexpected debt liability, prevents disputes over asset division, preserves estate planning goals, and allows couples to control the financial terms of their marriage rather than relying on Ohio’s equitable distribution laws.
When two people marry, Ohio law begins treating certain assets and debts as shared marital property. Without a prenup, the division of that property in a divorce is governed by equitable distribution rules under ORC § 3105.171, which do not guarantee a 50/50 split and may not reflect what either spouse intended. A prenuptial agreement allows the couple to set their own rules.
Beyond divorce planning, prenups serve a protective function during the marriage itself. They clarify how debts will be allocated, how household finances will be managed, and how estate plans will interact with marital property rules. For couples entering a second marriage, a prenup can be essential for protecting children from a prior relationship and preserving assets meant for them.
What Should You Include in a Prenup?
A comprehensive prenuptial agreement typically addresses the distinction between marital and separate property, full financial disclosure, debt protection, spousal support terms, business interests, estate planning, retirement accounts, and provisions for children from previous relationships.
Every prenup should be tailored to the couple’s specific circumstances. The provisions that matter most will depend on each person’s financial situation, whether either spouse owns a business, whether children from prior relationships are involved, and the couple’s long-term goals. Below are the most common and most important elements to consider.
Marital Property vs. Separate Property
Defining what counts as marital property and what remains separate is the foundation of most prenuptial agreements. Under Ohio law (ORC § 3105.171), marital property includes most assets and income acquired during the marriage, while separate property includes assets owned before the marriage, inheritances received individually, and gifts. A prenup can establish clear boundaries between the two—and can change the default rules, such as designating that income earned during the marriage remains separate property if deposited into an individually titled account.
Full Financial Disclosure
Each spouse must provide a complete and accurate accounting of their debts, income, and assets. This is not optional—under the Gross v. Gross standard, a prenup executed without full financial disclosure can be invalidated by an Ohio court. Detailed financial statements should be attached to the agreement as exhibits.
Debt Protection
Without a prenup, creditors can target marital property even if the debt is only in one spouse’s name. A prenuptial agreement can limit each spouse’s liability by establishing that premarital debts and debts incurred individually during the marriage remain the sole responsibility of the spouse who incurred them.
Spousal Support
Ohio allows couples to address spousal support (alimony) in a prenuptial agreement, including waiving it entirely. However, Ohio courts retain the authority to review spousal support provisions for conscionability at the time of divorce. Under the Gross v. Gross holding, if a spousal support waiver would leave one spouse destitute or reliant on public assistance, a court may modify or override that provision. Carefully drafted support terms that account for potential future circumstances are more likely to survive judicial review.
Division of Assets
Rather than leaving asset division to Ohio’s equitable distribution framework, a prenup allows both spouses to decide in advance how property will be split. This can include specific assets like real estate, vehicles, and investment accounts, as well as general rules for how jointly acquired property will be treated.
Business Interests
If one or both spouses own a business, a prenup can protect it from being classified as marital property or from having its value divided in a divorce. This includes addressing how any increase in the business’s value during the marriage will be treated—a particularly important consideration in Ohio, where the appreciation of a separate asset can become marital property if it resulted from the labor or investment of either spouse.
Estate Planning and Inheritance Rights
A prenup can coordinate with an existing estate plan to ensure that your wishes are carried out. Under ORC § 2106.01, a surviving spouse in Ohio has a right to an “elective share” of the deceased spouse’s estate—meaning they can claim a portion even if the will says otherwise. A spouse can waive this right in a prenuptial agreement, which is particularly important for individuals who want to preserve assets for children from a prior relationship or direct their estate to specific beneficiaries.
Provisions for Children from Previous Relationships
If either spouse has children from a prior relationship, a prenup can guarantee that designated assets pass to those children rather than being absorbed into the marital estate. Combined with proper estate planning documents like a will or trust, these provisions create a layered protection that safeguards children’s inheritance regardless of what happens to the marriage.
Additional Provisions
Depending on the couple’s circumstances, a prenup may also address:
- Retirement benefits and accounts — whether 401(k)s, pensions, and IRAs are treated as marital or separate property
- Joint bank accounts and household expenses — how shared finances will be managed during the marriage
- Future inheritances — designating anticipated inheritances as separate property to prevent division
- Sunset clauses — provisions that cause the agreement (or certain terms) to expire after a set period, allowing for renegotiation
- Infidelity or lifestyle clauses — financial consequences for specific conduct during the marriage, though enforceability in Ohio is limited
What Can You Not Put in a Prenup in Ohio?
Ohio prenuptial agreements cannot include provisions that predetermine child custody or child support, require illegal activity, or contain terms so one-sided that a court deems them unconscionable. Any provision that promotes or encourages divorce is also unenforceable.
Child Custody and Child Support
Ohio courts determine child custody and child support based on the best interests of the child at the time of divorce, not based on an agreement the parents made before the child was born or before the marriage began. Any prenup provisions that attempt to predetermine custody arrangements or waive child support obligations are unenforceable. Child support is treated as a right belonging to the child, not the parent, and cannot be contracted away.
Illegal Activities or Provisions Against Public Policy
Any clause requiring a spouse to engage in illegal conduct, waive legal protections against fraud, or act in a manner that contradicts Ohio public policy will invalidate that provision and potentially jeopardize the enforceability of the entire agreement. Terms that attempt to limit a spouse’s right to seek a divorce also fall outside what Ohio courts will enforce.
Lifestyle and Infidelity Clauses
While some couples include infidelity clauses that assign financial penalties for certain behavior, Ohio courts have generally not upheld provisions that penalize a party for adultery in the context of a prenuptial agreement. Courts tend to view these clauses as personal or moral judgments rather than legally binding contractual terms. Including them does not necessarily invalidate the agreement, but they should not be relied upon as enforceable provisions.
What Makes a Prenup Legally Valid in Ohio?
Under the standard set in Gross v. Gross (1984), an Ohio prenuptial agreement is enforceable if it was entered into freely without fraud, duress, or coercion; both parties made full financial disclosure; and the terms do not promote or encourage divorce. The agreement must be in writing and signed before the marriage takes place.
Ohio courts apply a three-part test when evaluating a prenuptial agreement’s enforceability. The agreement must satisfy all three elements:
- Voluntary execution. Both spouses must enter into the agreement freely, without pressure, coercion, or manipulation. Presenting a prenup on the day of the wedding or under circumstances that leave one party with no meaningful opportunity to review it can be grounds for invalidation.
- Full financial disclosure. Each party must disclose the nature, value, and extent of their property, debts, and income. Incomplete or inaccurate disclosure is one of the most common reasons Ohio courts refuse to enforce a prenuptial agreement.
- No promotion of divorce. The terms cannot create a financial incentive for either party to dissolve the marriage. Provisions that make divorce financially advantageous for one spouse may be struck down.
Additionally, the Ohio Supreme Court held in Gross that spousal support provisions are subject to an additional conscionability review at the time of divorce. Even if the prenup was valid when signed, a court may modify spousal support terms if enforcing them as written would leave one spouse in severe financial hardship.
Both parties should have independent legal counsel review the agreement before signing. While Ohio does not require attorney representation for a prenup to be valid, having each spouse represented by their own attorney strengthens the agreement’s enforceability and demonstrates that both parties understood the terms and their implications.
Can You Create a Marital Agreement After the Wedding in Ohio?
Yes. Since the passage of Ohio Senate Bill 210 in March 2023, married couples in Ohio can now enter into postnuptial agreements or modify existing prenuptial agreements. The same validity requirements—voluntary execution, full disclosure, and no promotion of divorce—apply.
Ohio historically did not recognize postnuptial agreements, but that changed in 2023 with the enactment of Senate Bill 210. Under the new law, married couples can create a postnuptial agreement, amend an existing prenup, or revoke a prenuptial agreement entirely—provided the agreement is in writing, signed by both spouses, entered into without fraud or coercion, and supported by full financial disclosure.
This is a significant development for couples whose financial circumstances have changed since the wedding—whether through a new business, an inheritance, a career change, or the birth of children. If your existing prenup no longer reflects your situation, or if you married without one and now realize you need financial protections in place, a postnuptial agreement may be an option.
Work With an Ohio Prenuptial Agreement Attorney
A prenuptial agreement is one of the most effective tools available for protecting your financial interests, preserving your estate plan, and establishing clear expectations before marriage. But a prenup that is poorly drafted, presented under pressure, or missing required disclosures can be challenged and thrown out when it matters most.
At Lawrence Law Office, our Columbus family law attorneys have extensive experience drafting prenuptial agreements that satisfy Ohio’s enforceability standards and reflect each client’s specific goals. As a Board Certified Family Law Specialist, Attorney Linda J. Lawrence understands the nuances of Ohio’s property division rules, spousal support laws, and estate planning considerations that intersect with prenuptial agreements.
If you are considering a prenup—or need to modify an existing one through a postnuptial agreement—call (614) 363-1273 to schedule a consultation. We’ll review your circumstances, explain your options, and help you create an agreement that protects both you and your future spouse.
