A prenuptial agreement can do more than address what happens if a marriage ends. In Illinois, it can also determine whether a surviving spouse keeps or gives up certain inheritance and estate rights, including the right to renounce a will, an intestate share, and the surviving spouse’s award. However, some rights cannot be waived through a prenup alone, and the agreement must satisfy Illinois requirements for voluntariness, financial disclosure, and enforceability.
At Caesar & Bender, LLP, Chicago prenuptial agreement lawyers Michael Ian Bender and Molly E. Caesar help clients prepare and review agreements involving inheritance rights, estate planning, businesses, and other significant assets. Our team works with clients to address what each spouse may receive at death and coordinate the agreement with wills, trusts, and related estate planning documents.
This guide explains which estate rights an Illinois prenup may waive, the requirements under 750 ILCS 10/7, and how a waiver can affect wills, trusts, and other estate planning documents. If you are considering a prenuptial agreement or want to address inheritance rights before marriage, call Caesar & Bender, LLP at (312) 236-1500 to schedule a consultation.
Can an Illinois Prenup Waive Inheritance Rights?
Yes. An Illinois premarital agreement can waive a surviving spouse’s statutory inheritance rights, including the right to renounce a will. Under 755 ILCS 5/2-8, renouncing the will allows the surviving spouse to claim one-third of the estate when the deceased spouse leaves descendants or one-half when there are no descendants. A valid prenup can waive this right before marriage, preventing the surviving spouse from later claiming that statutory share.
A prenup can also address other property and estate rights that arise when a spouse dies. 750 ILCS 10/4 allows prospective spouses to agree on how property will be disposed of upon separation, dissolution, or death and to include provisions involving a will, trust, or other arrangement. This gives couples a way to establish their intended estate arrangement in advance, particularly when they want property to pass differently from what Illinois law would otherwise provide.
Whether an estate waiver is enforceable depends on the validity of the premarital agreement and the scope of its language. An agreement that fails the enforceability requirements of 750 ILCS 10/7 can put the waiver at risk, while unclear language can create disputes over which rights were actually surrendered. Clearly addressing the right to renounce a will, the intestate share, and the surviving spouse’s award helps establish the intended scope of the waiver.
What Estate Rights Can an Illinois Prenup Waive?
An Illinois prenup can waive three important statutory estate rights: the right to renounce a will, the intestate share, and the surviving spouse’s award. These rights arise under separate provisions of the Illinois Probate Act, so the agreement should clearly address which rights the parties intend to waive.
Right to Renounce a Will (Elective Share)
Under 755 ILCS 5/2-8, a surviving spouse can renounce the deceased spouse’s will and claim one-third of the estate if the deceased spouse left descendants or one-half if there are no descendants. The surviving spouse must file a written renunciation within seven months after the will is admitted to probate. The court can extend that deadline when the spouse timely requests additional time because pending litigation affects the spouse’s share of the estate.
This right means that leaving a spouse little or nothing in a will does not automatically prevent the spouse from receiving part of the estate. The surviving spouse can instead claim the statutory share, which can affect property intended for children from a previous marriage or other beneficiaries. A prenup can waive the right of renunciation and prevent the surviving spouse from making that statutory claim.
Intestate Succession Rights
When a spouse dies without a valid will, 755 ILCS 5/2-1 gives the surviving spouse one-half of the intestate estate if the deceased spouse left descendants and the entire intestate estate if there are no descendants. This right is separate from the right to renounce a will because it applies when property passes through intestate succession rather than under a will.
A prenup can waive the surviving spouse’s intestate share. Addressing both intestacy and renunciation in the agreement helps establish what the surviving spouse can claim regardless of whether the deceased spouse leaves a valid will.
Surviving Spouse’s Award
Under 755 ILCS 5/15-1, the surviving spouse is entitled to an award for support during the nine months after the other spouse’s death. The court sets an amount that is reasonable for the spouse’s support, subject to a minimum of $20,000. The statute also provides additional amounts for qualifying minor children and certain financially dependent adult children who are likely to become a public charge.
A prenup can waive the surviving spouse’s award. Although Illinois courts do not require an agreement to use the exact words “surviving spouse’s award” when the language otherwise clearly establishes an intent to waive the right, identifying the award expressly can help avoid disputes over the scope of the waiver.
| Statutory Right | Statutory Basis | What It Normally Provides | Waivable by Premarital Agreement |
|---|---|---|---|
| Renunciation of a will (elective share) | 755 ILCS 5/2-8 | One-third of the estate if the deceased spouse left descendants; one-half if there are no descendants | Yes |
| Intestate share | 755 ILCS 5/2-1 | One-half of the intestate estate if descendants survive; the entire intestate estate if none survive | Yes |
| Surviving spouse’s award | 755 ILCS 5/15-1 | At least $20,000 for the surviving spouse, with additional amounts for qualifying children | Yes |
| Child support obligations | 750 ILCS 10/4 | A child’s right to support cannot be adversely affected by a premarital agreement | No |
Key Takeaway: An Illinois prenup can waive the right to renounce a will, the intestate share, and the surviving spouse’s award. Clearly addressing each right in the agreement helps establish the scope of the waiver and reduce later disputes.
What Rights and Assets Require More Than a Prenup?
A premarital agreement cannot eliminate every right or control every asset on its own. Child support remains subject to court authority, while certain retirement benefits, accounts with beneficiary designations, and jointly titled property require additional forms, consents, or changes to account records.
Child-Related Support Obligations
Under Section 4 of the Illinois Uniform Premarital Agreement Act, a premarital agreement cannot adversely affect a child’s right to support. The parties therefore cannot use a prenup to waive or limit a child’s support rights, and the court retains authority to determine child support under Illinois law.
Retirement Plans Governed by Federal Law
For retirement plans subject to the federal survivor annuity rules in 29 U.S.C. § 1055, a premarital agreement signed before marriage does not waive spousal annuity rights on its own. Under federal law, only a current spouse can execute a valid ERISA waiver. A prenup can require the future spouse to execute the formal ERISA spousal waiver after the wedding, but the prenup itself does not replace that required post-marital consent.
Assets That Require Separate Account or Title Documents
Some assets pass outside probate based on a beneficiary designation or the way the property is titled. A prenup can address the parties’ rights and obligations concerning these assets, but the appropriate beneficiary designations and ownership documents should also reflect the agreement.
- Life insurance and IRAs: Beneficiary designations should be reviewed and updated to match the prenup and estate plan.
- Jointly titled property: Property held with a right of survivorship passes according to the form of ownership, so retitling can be necessary to carry out the intended arrangement.
- Payable-on-death and transfer-on-death accounts: The beneficiary designation on file should match the agreement and estate plan to avoid conflicting instructions.
Key Takeaway: A prenup cannot limit a child’s right to support or replace a spousal consent required under federal retirement law. Beneficiary designations, account records, and property titles should also be coordinated with the agreement to carry out the intended estate plan.
What Makes an Estate Waiver Enforceable in Illinois?
An estate waiver is enforceable only if the premarital agreement containing it satisfies 750 ILCS 10/7. The statute focuses on two main issues: whether the agreement was executed voluntarily and whether an unconscionable agreement was signed without the required financial disclosure or adequate knowledge of the other party’s finances.
Fair and Reasonable Disclosure of Assets
Financial disclosure should be documented when the agreement is prepared. Schedules identifying assets, liabilities, income, business interests, and property held through LLCs or other entities can help establish what financial information was provided before signing.
The law does not require a formal appraisal of every asset. Instead, the issue is whether the party received fair and reasonable disclosure, expressly waived further disclosure in writing, or already had adequate knowledge of the other party’s property and financial obligations. Inadequate disclosure alone does not make the agreement unenforceable under Section 7(a)(2); the challenging party must also prove that the agreement was unconscionable when executed.
Voluntary Execution and Independent Counsel
Voluntariness is a separate basis for challenging a premarital agreement. An agreement that was not executed voluntarily can be unenforceable regardless of its financial terms. Courts consider the circumstances surrounding the signing, including the timing before the wedding and whether each party had a meaningful opportunity to consult independent counsel.
Requiring a prenuptial agreement as a condition of marriage does not, by itself, establish duress. Providing the agreement well before the wedding and allowing enough time for review and separate legal advice can help show that it was signed voluntarily. Records of the negotiations, financial disclosures, revisions, and opportunities to consult counsel can also be important if the agreement is challenged later.
Key Takeaway: An enforceable estate waiver depends on a valid premarital agreement and compliance with 750 ILCS 10/7. Voluntary execution, proper financial disclosure, and clear records from the negotiation and signing can become important if the agreement is later challenged.
Prenuptial Agreement Attorneys in Chicago – Caesar & Bender, LLP
Michael Ian Bender, Esq.
Michael Ian Bender represents clients in prenuptial agreement matters involving significant assets, businesses, and other family law concerns. As a co-founding partner of Caesar & Bender, LLP and a former Domestic Relations Judge for the Circuit Court of Cook County, he draws on experience from both the bench and private practice.
Michael earned his J.D. cum laude and LL.M. with honors from the University of Illinois Chicago School of Law. He has been recognized by Best Lawyers in America, Leading Lawyers, and Lawyers of Distinction, along with receiving Litigator of the Year and Lawyer of the Year honors.
Molly E. Caesar, Esq.
Molly E. Caesar is a co-founding partner of Caesar & Bender, LLP whose family law practice includes prenuptial agreements, divorce, parentage, child support, and maintenance matters. She has litigated cases at the trial, appellate, and Illinois Supreme Court levels and is also trained as a certified mediator.
A summa cum laude graduate of DePaul University College of Law and a member of the Order of the Coif, Molly serves as an Adjunct Professor and a former member of DePaul’s Family Law Advisory Board. She has been recognized by Super Lawyers and Rising Stars and has also received Emerging Lawyer and Litigator of the Year honors.
What Happens Without an Estate Rights Waiver?
If a premarital agreement does not address estate rights, it does not waive the surviving spouse’s statutory protections. The surviving spouse can still have the right to renounce the will and claim one-third of the estate when descendants survive or one-half when none survive, as well as receive an intestate share or claim the surviving spouse’s award when applicable.
These rights can affect an estate plan intended to preserve property for children from a previous marriage or other beneficiaries. For example, if a will leaves a closely held business to adult children, the surviving spouse’s right to renounce the will can reduce the property available to carry out that plan and, in some cases, create a need to sell assets or arrange a buyout.
A prenup that addresses property rights only in the event of divorce can also leave estate rights unchanged at death. Clearly addressing inheritance and estate rights in the agreement helps establish what the surviving spouse can claim and reduces the risk of a later dispute over the parties’ intentions.
How Does a Prenup Waiver Affect Your Will?
Waiving statutory estate rights does not prevent a spouse from inheriting under a will or other estate planning arrangement. Even after signing a waiver, one spouse can leave property to the other through a will, create a trust for the spouse’s benefit, or name the spouse as a beneficiary of life insurance or a retirement account.
The prenup and estate planning documents should reflect the same arrangement. If the prenup promises a specific bequest or trust but the will or trust contains different terms, the inconsistency can lead to a dispute after death. Reviewing the will, trusts, and beneficiary designations after marriage helps ensure they carry out the terms of the agreement.
Protect Your Estate Rights With a Chicago Prenuptial Agreement Attorney
When a marriage involves a business, children from a previous relationship, or an existing estate plan, a prenup can address what each spouse will be entitled to if the other dies. Addressing these rights before marriage can help ensure that the agreement and estate plan reflect the couple’s intentions.
Michael Ian Bender and Molly E. Caesar help clients throughout Chicago and Cook County prepare and review prenuptial agreements involving inheritance rights, businesses, and other significant assets. At Caesar & Bender, LLP, our team assists with defining estate rights in the agreement and coordinating those terms with wills, trusts, and other estate planning documents.
Call Caesar & Bender, LLP at (312) 236-1500 to schedule a consultation. Our office at 150 N Michigan Ave #2130, Chicago, IL 60601 serves clients throughout Chicago and Cook County.
Frequently Asked Questions About Illinois Prenup Estate Waivers
Does a prenup automatically waive estate rights in Illinois?
No. A premarital agreement must address estate rights for those rights to be waived. If the agreement covers property division at divorce but is silent about death, the surviving spouse can retain the right to renounce the will, receive an intestate share, and claim the surviving spouse’s award.
Can a postnuptial agreement waive the same rights?
Yes. Spouses can enter a written agreement after marriage that addresses property and estate rights. A written amendment to an existing premarital agreement is governed by 750 ILCS 10/6, while other postnuptial agreements are evaluated under Illinois contract principles, including rules concerning unconscionability. The enforceability analysis differs from the statutory requirements that apply to a premarital agreement.
Does an estate waiver apply to property acquired after marriage?
It depends on the language of the agreement. A waiver can cover the deceased spouse’s entire probate estate, including property acquired during the marriage, or apply only to specified premarital assets and their proceeds. Because the statutory share under 755 ILCS 5/2-8 is measured against the estate, the agreement should clearly define the property and rights covered by the waiver.
Can a spouse still inherit voluntarily after waiving statutory rights?
Yes. Waiving statutory estate rights does not prevent a spouse from receiving property voluntarily. The other spouse can still leave property through a will or trust or name the surviving spouse as a beneficiary of an account or insurance policy.
Does an Illinois prenup waiver cover retirement accounts?
Not by itself for retirement plans subject to the federal survivor annuity and spousal consent requirements in 29 U.S.C. § 1055. When these rules apply, the participant’s spouse must provide the required consent and satisfy the applicable witnessing requirements. IRAs are not subject to those ERISA survivor annuity rules, but their beneficiary designations should still be coordinated with the prenup and estate plan.
Can an estate rights waiver be challenged later?
Yes. Under 750 ILCS 10/7, a surviving spouse can challenge a premarital agreement on the grounds that it was not executed voluntarily or that it was unconscionable when executed and the required financial disclosure was lacking. Records of asset disclosures, negotiations, signing dates, and opportunities to consult independent counsel can become important if the agreement is challenged.
