Prenuptial Agreement Attorneys in Chicago, IL
Lead Attorneys & Managing Partners
While there’s nothing romantic about prenuptial agreements (or “prenups”), you could avoid the stress and financial tension that often comes with a new marriage by speaking to a Chicago prenuptial agreement lawyer. Having answers to questions that will likely arise if the marriage should come to an end can relieve a lot of newfound stress, for both parties. We all would like to believe that our marriage will last a lifetime, but planning ahead is a practical step in any marriage. Current research from the Centers for Disease Control and Prevention and the U.S. Census Bureau places the first marriage divorce rate at roughly 40 percent, and that figure has declined steadily since the 1980s. A prenuptial agreement is simply a way to make decisions together, calmly and in advance, rather than under pressure later (CDC, National Center for Health Statistics).
No one wants to plan for the end of their marriage, especially when they’re caught up in the romantic whirlwind of planning a wedding. However, just like your wedding celebration, marriage is a partnership that requires careful planning regarding assets, property, and other important financial matters. Memorializing your intentions regarding your property, assets, and future financial concerns with a written, enforceable prenuptial agreement can relieve a lot of anxiety, prevent future disagreements, and minimize the cost of litigation.
If your fiance has presented you with a prenup or you think a prenuptial agreement is right for you, Anderson Boback & Marshall can help. Our Chicago prenuptial agreement lawyers will evaluate your situation, provide guidance regarding the law, and structure an enforceable agreement to protect your rights and interests in a marriage. We have extensive experience in the preparation of prenuptial agreements, post-nuptial agreements and the enforcement of all marital or divorce contracts.
What Is a Prenuptial Agreement Under Illinois Law
A prenuptial agreement, sometimes called a premarital agreement or prenup, is a written contract entered into by two people before they marry. It establishes how property, debts, and certain financial matters will be handled if the marriage ends in divorce or upon the death of one spouse. A well-drafted prenuptial agreement can protect premarital assets, clarify financial expectations, and prevent costly disputes later.
In Illinois, prenuptial agreements are governed by the Illinois Uniform Premarital Agreement Act, codified at 750 ILCS 10. The statute requires that a prenuptial agreement be in writing and signed by both parties, and it sets out the grounds on which a court may refuse to enforce one.
At Anderson Boback & Marshall, our Chicago prenuptial agreement lawyers prepare enforceable Illinois prenups for clients across Cook, DuPage, Lake, and Will counties. We draft agreements designed to hold up when they matter most.
What an Illinois Prenuptial Agreement Can Cover
Illinois prenuptial agreements can address a wide range of financial and property matters. The most common topics include:
- Division of property and assets in the event of divorce
- Classification of separate versus marital property
- Protection of business interests and ownership stakes
- Spousal support (maintenance) obligations or waivers
- Allocation of debts each spouse brings into the marriage
- Protection of inheritance and family assets
- Real estate ownership and division
- Retirement accounts, pensions, and investment holdings
- Estate planning provisions, including protection for children from prior relationships
For a detailed guide to what Illinois prenuptial agreements can include and the legal reasoning behind each category, see our Illinois Prenuptial Agreement Guide and our deeper analysis of what Illinois prenups can and cannot cover.
What an Illinois Prenuptial Agreement Cannot Cover
Illinois law places clear limits on what a prenuptial agreement can decide. Under 750 ILCS 10/4, an Illinois prenuptial agreement cannot determine:
- Child custody or parental responsibilities
- Parenting time schedules
- Child support obligations
Illinois courts always decide these issues based on the best interests of the child at the time of divorce, regardless of what a prenup says. A prenuptial agreement also cannot include provisions that are illegal, that violate public policy, or that attempt to limit a party’s right to seek the protection of the courts.
What Makes a Prenup Enforceable in Illinois
An Illinois prenuptial agreement is only valuable if it will hold up when it is needed. Illinois courts evaluate enforceability under four requirements established by the Illinois Uniform Premarital Agreement Act:
- The agreement must be in writing and signed by both parties.
- Both parties must sign voluntarily, without duress or coercion. Timing is critical here because agreements signed in the final days before a wedding are the most common target of voluntariness challenges.
- Each party must receive fair and reasonable financial disclosure from the other. Reciting disclosure in the document does not replace providing it in practice.
- The agreement must not be unconscionable at the time of execution. Illinois courts also retain the authority to modify a spousal support waiver if enforcement would cause undue hardship under circumstances that were not reasonably foreseeable when the agreement was signed.
Getting these requirements right is the difference between a prenup that protects you and one that falls apart in court. For a complete walkthrough of the Illinois prenuptial agreement process and how our team builds enforceable agreements at every stage, see our guide on how to build an enforceable Illinois prenuptial agreement.
If you are evaluating whether a prenuptial agreement is right for your situation, Anderson Boback & Marshall can help. Schedule a confidential consultation with our Chicago prenuptial agreement lawyers.
Who Should Consider an Illinois Prenuptial Agreement
Prenuptial agreements are not just for the wealthy. Anyone entering a marriage in Illinois can benefit from the clarity and protection a well-drafted prenup provides. The people who benefit most are those whose financial situation or family circumstances create meaningful risk if a marriage ends.
A prenuptial agreement is worth serious consideration if you:
- Own a business, hold a partnership interest, or expect to inherit one
- Have significant premarital assets, savings, or investments
- Earn a significantly higher income than your future spouse
- Expect to receive a large inheritance or family distribution
- Are entering a second or subsequent marriage
- Have children from a previous relationship whose inheritance you want to protect
- Are bringing significant debt into the marriage, or your future spouse is
- Hold equity compensation, stock options, or restricted stock units from your employer
- Own real estate, including a home you purchased before the marriage
Millennials and Younger Couples Prenuptial Agreements
Many younger couples (e.g., Millennials) also choose to sign prenuptial agreements to clarify how student debt, early-career earnings, and future assets will be handled. Modern prenups are less about doubt and more about clarity at a moment when both partners can agree on fair terms. For high-earning professionals, executives, and anyone with equity compensation or restricted stock, a prenuptial agreement is the primary tool for protecting complex assets before they become subject to Illinois marital property rules.
Other issues that younger modern couples tend to focus on are pet custody and the allocation of frozen embryos post-divorce. This video, attorney Jessica Marshall discusses the nuances of Millennial’s prenuptial agreements.
Prenups for Second Marriages and Blended Families
Second marriages and blended families face unique estate planning and property division challenges that prenuptial agreements are particularly well suited to address. When children from a prior relationship are involved, a prenup can protect inheritance rights, clarify how assets will pass to your children, and prevent unintended outcomes in the event of divorce or death.
A carefully drafted prenuptial agreement can coordinate with your existing estate plan to ensure that specific assets, family heirlooms, or financial accounts remain available to your children rather than becoming part of the marital estate. It can also define how new assets acquired during the marriage will be treated if the marriage ends.
For a deeper discussion of prenuptial agreement planning for remarriage and blended families, see our guide on prenuptial agreement tips for remarriage and the blended family.
Protecting a Business with an Illinois Prenuptial Agreement
Business ownership is one of the most common reasons Illinois couples enter into prenuptial agreements, and for good reason. Under Illinois divorce law, a business interest acquired during the marriage is generally treated as marital property, and even a business you owned before the marriage can become partially marital if its value grows during the marriage or if marital funds and effort contribute to its growth.
A carefully drafted prenuptial agreement can address each of these risks before they become disputes. It can establish which portions of a business are separate property, define how business appreciation will be treated, clarify decision-making authority if one spouse is involved in operations, and prevent a future divorce from threatening the continuity of the business itself.
For entrepreneurs, partners, and executives, this section of a prenup is often the most important. For more detail on business protection during an Illinois divorce, see our guide on protecting business interests during an Illinois divorce, and for a deeper walkthrough of prenuptial agreements designed specifically for Illinois business owners, see our dedicated business owner prenup guide.
Our Prenuptial Agreement Process
At Anderson Boback & Marshall, we treat every prenuptial agreement as a document that may one day need to be enforced in court. That standard shapes how we work with our clients at every stage of the process.
The process typically begins with a confidential consultation to understand your goals, your financial situation, and the specific concerns you want the agreement to address. From there, we work with you to exchange full financial disclosures, draft the agreement, coordinate with your future spouse’s independent counsel, negotiate terms as needed, and finalize the agreement with appropriate notarization and execution.
We recommend starting the process at least three to six months before the wedding. Adequate time is one of the most important factors in whether a prenuptial agreement will hold up if it is later challenged. Rushed agreements are the most common target of voluntariness challenges in Illinois courts.
What Our Clients Say
How Our Chicago Prenuptial Agreement Lawyers Can Help
At Anderson Boback and Marshall, prenuptial agreements are part of a practice built around complex family law. Our Chicago prenuptial agreement lawyers prepare prenups with the same rigor we bring to contested divorce, high-asset property division, and enforcement, because a prenup that is never tested is still a document that needs to hold up if it ever is.
Jessica Marshall, Managing Partner, leads the prenuptial agreement practice and works directly with clients on drafting, negotiation, and review. Her work is supported by a team of family law attorneys whose recognition by Illinois Super Lawyers and Rising Stars reflects the depth of experience clients draw on when a prenup is drafted, enforced, or challenged years later.
From our downtown Chicago and Northbrook offices, we work with clients throughout Cook County, as well as families in DuPage County, Lake County, and Will County. If you are considering a prenuptial agreement, we invite you to schedule a confidential consultation. We will listen to your goals, explain how Illinois law applies to your situation, and help you decide whether a prenuptial agreement is the right step.
Frequently Asked Questions About Illinois Prenuptial Agreements
How Far in Advance of My Wedding Should I Start a Prenuptial Agreement in Illinois?
Three to six months before the wedding is the standard recommendation, and earlier is better. Anything shorter creates enforceability risk, because Illinois courts view last-minute signings as evidence of coercion or lack of voluntariness. Starting early also gives both parties real time to exchange disclosures, consult independent counsel, and negotiate terms without wedding pressure.
What Makes a Prenuptial Agreement Enforceable in Illinois?
Illinois prenuptial agreements must be in writing, signed by both parties voluntarily, based on fair and reasonable financial disclosure, and not unconscionable at the time of execution. These requirements come from the Illinois Uniform Premarital Agreement Act at 750 ILCS 10. Failure on any one of them can unwind the entire agreement.
Does Illinois Require Both Parties to Have Their Own Attorney for a Prenup?
Not legally required, but refusing to allow the other party to consult their own attorney is one of the fastest ways to create a voluntariness challenge. Illinois courts give significant weight to whether both parties had a genuine opportunity for independent legal advice. If one party chooses to waive independent counsel, that decision should be documented in a signed written waiver.
Can a Prenup Override Illinois Divorce Law on Property Division?
Yes, within limits. A properly drafted Illinois prenuptial agreement can establish its own rules for how property is classified and divided if the marriage ends, overriding the default equitable distribution rules. The agreement cannot override Illinois law on child custody, parenting time, or child support, which are decided by the court based on the best interests of the child.
Can a Prenup Protect My Business in an Illinois Divorce?
Yes, and this is one of the most common reasons business owners enter into prenuptial agreements. A well-drafted prenup can establish which portions of a business are separate property, how business appreciation will be treated during the marriage, and how ownership will be handled if the marriage ends. Without a prenup, a business interest can become partially marital property even if you owned it before the marriage.
What Is the Difference Between a Prenuptial Agreement and a Postnuptial Agreement?
A prenuptial agreement is signed before marriage, while a postnuptial agreement is signed after the couple is already married. Both can address similar financial and property issues, but postnuptial agreements face a higher level of scrutiny from Illinois courts because of the legal relationship that already exists between spouses.
Can an Illinois Prenup Be Changed or Cancelled After Marriage?
Yes. Both spouses can agree to modify or revoke a prenuptial agreement after marriage, but the change must be in writing and signed by both parties. Oral modifications are not enforceable under Illinois law.
Is an Illinois Prenup Still Enforceable if We Move to Another State?
Include a choice of law clause selecting Illinois law. Without one, the court of your new state of residence will apply its own enforcement standards, which may be stricter or looser than Illinois law. A well-drafted choice of law clause is the single most important protection against losing an enforceable Illinois prenup after a move.
Anderson Boback & Marshall have been helping individuals prepare for marriage with a solid foundation in the form of a carefully drafted prenuptial agreement. If you’ve been asked to sign a prenuptial agreement or you’d like to learn more about the benefits of premarital agreements, contact us today to speak with an experienced prenuptial agreement lawyer.
