What Are Prenuptial and Postnuptial Agreements?

Prenuptial and postnuptial agreements are legal contracts between spouses, either before or after marriage that define each party’s rights and obligations concerning property and finances.

Prenuptial Agreements

A prenuptial agreement is executed before marriage. It outlines how assets and liabilities will be handled during the marriage and in the event of divorce or death.

Postnuptial Agreements

A postnuptial agreement is created after the couple is already married. While postnuptial agreements are not governed by the Illinois Uniform Premarital Agreement Act (750 ILCS 10/), they are still enforceable under general contract principles and sections of the Illinois Marriage and Dissolution of Marriage Act (IMDMA).

When Are These Agreements Enforceable?

A prenuptial agreement becomes effective upon marriage. A postnuptial agreement becomes effective once it is signed and executed by both parties. Both types of agreements may be amended or revoked in writing, provided both spouses sign. These agreements are enforced during divorce proceedings or upon the death of one spouse.

Enforceability Standards

Prenuptial Agreements

To be enforceable, a prenuptial agreement must meet the following requirements:

• Written Agreement: Must be in writing and signed by both parties.
• Voluntary Consent: Each party must enter into the agreement freely, without coercion, duress, or undue influence.
• Full Disclosure: Each party must disclose all relevant financial information, including assets, liabilities, and income.
• Fair and Reasonable Terms: The agreement must not be unconscionable.
• Independent Legal Counsel: While not required, it is strongly recommended that each party retain separate legal counsel to review the agreement.

Postnuptial Agreements

Postnuptial agreements must meet these enforceability standards:

• Voluntariness: Entered into freely, without coercion or duress.
• Full Disclosure: Both parties must fully disclose their financial assets and liabilities.
• Capacity: Each party must have the mental capacity to understand and agree to the terms.
• Fairness: The terms must be fair and not unconscionable, either at the time of execution or enforcement.
• Public Policy Compliance: The agreement must not include terms that violate public policy, such as provisions regarding child custody or child support.

Case Study: In re Marriage of Dimitrova, 2024 WL 4182864 (Ill. App. 1st Dist.)

In this case, a married couple entered into a postnuptial agreement. The wife’s attorney advised her not to sign it. Nevertheless, she did after her husband threatened to withhold airline tickets for a family visit abroad and take custody of their child if she refused.

Although the appellate court found that the agreement had adequate consideration and was not procedurally unconscionable, it ruled the agreement was substantively unconscionable because it granted the husband 100% of the couple’s property at the time of signing.

The agreement’s terms were excessively one-sided and included vague language about property assigned to the wife, with no specified value. It also included ambiguities regarding credit card debt accrued after the agreement, with the husband attempting to make the wife contribute to that debt.

The court found the agreement substantively unconscionable because it overwhelmingly favored the husband.

Ultimately, in Dimitrova, the wife received assets of essentially no value and was expected to contribute to debt incurred after the agreement. The one-sided nature of the contract led the appellate court to rule that it was substantively unconscionable.

When Are Prenuptial and Postnuptial Agreements Unenforceable?

While prenuptial and postnuptial agreements can be excellent planning tools, they can be unenforceable. Illinois courts will only enforce these agreements if they meet certain fairness and procedural standards. Below are the most common reasons a court may find a prenuptial or postnuptial agreement unenforceable:

1. Lack of Voluntary Consent (Coercion, Duress, or Undue Influence)

If one party was pressured, threatened, or manipulated into signing, the agreement may be invalidated. Common red flags include signing under emotional pressure right before the wedding or facing threats like, “Sign this or the wedding is off.”

2. Failure to Disclose Financial Information

Each party must make a full and fair disclosure of their assets, debts, income, and liabilities before signing. If either party hides or misrepresents their financial situation, the agreement can be set aside.

3. Unconscionable Terms

Courts will not enforce an agreement that is shockingly unfair or one-sided. An agreement is considered substantively unconscionable if one party walks away with all or most of the property while the other is left with little to nothing.

Types of Unconscionability:

• Substantive Unconscionability: Occurs when contract terms are shockingly unfair, such as granting all marital assets to one party.
• Procedural Unconscionability: Arises from unfair negotiation tactics, including high-pressure situations or lack of informed consent.

4. Waivers That Violate Public Policy

Agreements that attempt to predetermine or waive issues related to child custody or child support are unenforceable. Courts will always base decisions involving children on their best interests at the time of divorce or separation not on prior private agreements.

5. Lack of Independent Legal Counsel

While Illinois law does not require each party to have their own attorney, courts give weight to whether both parties had the opportunity to seek independent legal advice. If only one spouse had legal representation or if one spouse didn’t fully understand the agreement that could be grounds for invalidation.

6. Fraud or Misrepresentation

If one spouse deliberately lies or misleads the other about finances or the terms of the agreement, the court may find that fraud occurred, making the agreement unenforceable.

7. Mental Incapacity or Lack of Understanding

If a party was mentally impaired (due to illness, intoxication, or otherwise) or did not understand the nature and effect of the agreement at the time of signing, the contract may be declared void.

Need Help with a Prenuptial or Postnuptial Agreement?

Prenuptial and postnuptial agreements are powerful tools for clarifying financial expectations and protecting individual and joint interests. In Illinois, it is critical that these agreements are drafted by experienced attorneys to ensure they are both substantively and procedurally sound.

If you’re considering a prenuptial or postnuptial agreement, contact O. Long Law, LLC to schedule a consultation and protect your future.