A postnuptial agreement is a written contract between married spouses that addresses the financial rights and obligations of each spouse in the event of divorce or death. It serves the same general function as a prenuptial agreement but is executed after the marriage has already taken place. Postnuptial agreements are not used exclusively by couples in troubled marriages or by those planning for divorce. They are frequently used by financially sophisticated couples who want to formalize an understanding they have developed during the marriage, to protect a business interest that one spouse has built since the wedding, or to address a significant change in financial circumstances that the prenuptial agreement did not anticipate or that the couple did not have when they married.
Circumstances That Make a Postnuptial Agreement Valuable
The life circumstances that most commonly lead Barrington-area couples to consider a postnuptial agreement include:
- One spouse starts or substantially grows a business during the marriage: Illinois marital property law treats the appreciation of a business built during the marriage as marital property subject to equitable division. A postnuptial agreement can define how the business will be valued and what portion the business-owning spouse retains in a divorce, providing predictability that benefits both the business owner and the spouse who supported the business-building effort in non-financial ways
- An inheritance is received and the couple wants to define its character: Inheritances are generally separate property in Illinois, but commingling an inherited asset with marital funds can complicate its status. A postnuptial agreement that clearly identifies the inherited asset and the parties’ agreement about how it will be treated removes that ambiguity
- The couple reconciles after a separation or period of serious marital conflict: Couples who work through a difficult period sometimes reach a new understanding about financial expectations that both want formalized. A postnuptial agreement negotiated as part of the reconciliation can provide the security that makes both parties more confident about the relationship’s future
- Significant financial inequality develops during the marriage: When one spouse’s career has produced substantially greater wealth than the other’s, a postnuptial agreement can define the financial framework that both parties consider fair, which may be different from what a court would order under equitable distribution
- One spouse takes on significant debt or financial risk: A business owner who is taking on substantial debt to grow the business, or a spouse who is personally guaranteeing a commercial obligation, may want a postnuptial agreement that limits the other spouse’s exposure to those obligations in the event of divorce
Illinois Enforceability Requirements
Illinois courts evaluate the enforceability of postnuptial agreements using a framework that considers whether the agreement was entered into voluntarily, whether full financial disclosure was made by both parties, and whether the agreement was not the product of fraud, duress, or overreaching. Illinois requires that a postnuptial agreement be in writing and signed by both parties. Courts scrutinize postnuptial agreements more carefully than prenuptial agreements because the parties are already married and may have unequal bargaining positions when the agreement is negotiated.
The financial disclosure requirement is particularly important. Each spouse must have a reasonably complete understanding of the other’s financial situation when signing the postnuptial agreement, because an agreement signed without that knowledge can be challenged as lacking the informed consent that valid contracts require. Attaching financial schedules listing the assets and debts of each spouse at the time of signing, and exchanging that information formally between counsel, creates the disclosure record that protects the agreement’s enforceability if it is later challenged.
What Postnuptial Agreements Can and Cannot Address
A valid Illinois postnuptial agreement can address the characterization of specific assets as separate or marital property, define how property will be divided in a divorce, establish spousal maintenance obligations or waive them, and address property rights upon death. It cannot determine child custody or child support arrangements, because those issues are governed by the best interests of the children at the time of divorce and cannot be contractually predetermined.
Postnuptial agreements also cannot contain provisions that are unconscionable at the time they are sought to be enforced, even if they were reasonable when signed. A provision that seemed equitable when negotiated but that would leave one spouse without means of support after a long marriage may be challenged as unconscionable in changed circumstances. Drafting postnuptial agreements with both current fairness and long-term equity in mind is the work that protects enforceability across the time between signing and the circumstances under which the agreement might be invoked.
The Illinois Marriage and Dissolution of Marriage Act governs the enforceability of marital agreements in Illinois. Working with experienced attorneys who provide legal help with postnuptial agreements in Barrington gives couples the drafting precision, the financial disclosure infrastructure, and the independent representation for each party that Illinois courts expect to see when they evaluate whether a postnuptial agreement should be enforced. See More