Estate Planning for Unmarried Couples in Illinois
What Happened
A Chicago-area estate planning firm published a detailed guide addressing the legal gaps that unmarried couples face in Illinois. The article, written by Bielski Chapman, Ltd., outlines how Illinois law treats unmarried partners differently from married spouses and explains which legal documents can close those gaps. The firm focuses on healthcare decision-making authority, financial power of attorney, and inheritance rights as the three most consequential areas where unmarried partners lack automatic legal standing.
The guide highlights that an unmarried partner cannot assume that a long-term relationship, shared finances, or cohabitation creates any legal authority during a medical emergency or period of incapacity. Illinois law defaults to biological family members in the absence of written documentation. The firm identifies a coordinated set of documents — including a healthcare proxy, a durable financial power of attorney, a living will, a HIPAA authorization, and either a will or a trust — as the foundation of a protective plan for unmarried couples.
The article also addresses hospital visitation rights, noting that federal regulations require Medicare and Medicaid participating hospitals to maintain non-discriminatory visitation policies. However, the firm draws a clear distinction between the right to visit and the legal authority to make healthcare decisions or access medical records. The guide specifically calls out LGBTQ+ couples and modern family structures as groups that benefit from customized planning because Illinois default law does not automatically protect every relationship type.
What It Means
Illinois Intestacy Rules Leave Unmarried Partners Unprotected
Illinois intestacy law distributes assets in a defined order. A surviving spouse with no children receives the entire estate. When children exist alongside a spouse, the spouse receives Half of the estate755 ILCS 5/2-1Verified Jul 15, 2026View source and children share the remainder. An unmarried partner appears nowhere in this distribution order. If an Illinois resident dies without a will or trust and without beneficiary designations on their accounts, their partner receives nothing. The estate passes to biological relatives instead — potentially to family members the deceased had little contact with or actively wanted to exclude.
This gap creates real financial exposure for couples who have built shared lives. A partner who contributed to a home purchase, supported the household financially, or served as a caregiver has no automatic claim under intestacy. A will or revocable trust naming the partner as beneficiary changes this outcome entirely. Beneficiary designations on retirement accounts and life insurance policies also operate outside of probate and can transfer assets directly to a named partner without court involvement. Illinois does not recognize common law marriage, which means no amount of time living together creates spousal rights.
Illinois Probate Adds Time and Cost Without a Plan
When an Illinois resident dies without a trust or beneficiary designations in place, assets titled in their name alone pass through probate. Illinois probate typically runs 9 months755 ILCS 5/6-4Verified Jul 14, 2026View source to 14 months755 ILCS 5/6-4Verified Jul 14, 2026View source for an average estate. Court filing fees begin at $384705 ILCS 105/27.1b(a)(2) (Clerks of Courts Act, as last amended by P.A. 104-120, eff. 1-1-26); 705 ILCS 105/27.3f(c)(1)Verified Jul 14, 2026View source, and attorney fees — while not set by statute — typically run between 1.9%755 ILCS 5/27-2 (reasonable compensation; no statutory percentage)Verified Jul 14, 2026View source and 3%755 ILCS 5/27-2 (reasonable compensation; no statutory percentage)Verified Jul 14, 2026View source of the estate's value. For an unmarried partner waiting on an inheritance that Illinois law does not guarantee, this timeline compounds the difficulty of an already painful situation.
Illinois does provide a simplified alternative for smaller estates. Personal property with a value at or below $150,000755 ILCS 5/6-4Verified Jul 14, 2026View source may qualify for transfer using a Small Estate Affidavit755 ILCS 5/6-4Verified Jul 14, 2026View source, with no waiting period after death. Motor vehicles and real estate fall outside this affidavit procedure entirely. For unmarried couples who own real property together, the title structure — joint tenancy with right of survivorship versus tenants in common — determines whether the surviving partner automatically inherits the property or whether a probate proceeding becomes necessary. Understanding whether probate is required depends heavily on how assets are titled and what documents exist. The free Probate Cost Calculator can help Illinois families estimate what probate would cost for a specific estate.
Incapacity Planning Documents Carry Equal Weight
The financial stakes of dying without a plan are significant. The stakes of becoming incapacitated without a plan are immediate. An unmarried partner who cannot communicate due to illness or injury has no automatic legal authority in a hospital setting. Illinois healthcare providers follow a statutory hierarchy when determining who can make medical decisions for an incapacitated patient. An unmarried partner does not appear on that hierarchy. Biological family members — including parents, adult children, or siblings — may step in ahead of a long-term partner.
A healthcare proxy naming the partner as agent addresses this directly. Illinois requires 1755 ILCS 45/4-10Verified Jul 15, 2026View source witness for a healthcare power of attorney. Notarization is not required under Illinois law for this document. A HIPAA authorization, executed alongside the healthcare proxy, allows the named agent to receive medical information from providers — an important addition since a proxy alone may not resolve all privacy-related access questions. A living will documents specific end-of-life preferences and gives the agent guidance beyond the authority to act.
Financial incapacity planning operates through a separate document. Illinois requires a financial power of attorney to be notarized. Illinois law requires notarization for a financial power of attorney to be recognized. The document also requires 1755 ILCS 45/2-3, 45/2-5, 45/2-8, 45/2-10.6, 45/3-3, 45/3-3.6, 45/3-4; 765 ILCS 5/28; 755 ILCS 5/11-1Verified Jul 14, 2026View source witness. Illinois permits springing powers of attorney that activate only upon a formal determination of incapacity, though this structure can create delays when time-sensitive decisions arise. Without a durable financial power of attorney, a partner who becomes incapacitated may leave their household in a difficult position — bills unpaid, accounts inaccessible, and the surviving partner facing a guardianship or conservatorship proceeding to gain court-supervised authority over basic financial matters. A conservatorship proceeding is expensive, time-consuming, and places ongoing decision-making under court supervision rather than in the hands of a trusted partner.
Illinois Estate Tax Adds a Planning Layer for Higher-Value Estates
Illinois imposes a state estate tax with an exemption of $4,000,00035 ILCS 405/2Verified Jul 13, 2026View source — significantly lower than the federal exemption of $15,000,00026 USC 2001(c), 2010; P.L. 119-21 §70106Verified Jul 13, 2026View source. Illinois is one of only 12 states that maintain a state-level estate tax. Married couples benefit from an unlimited marital deduction at both the federal and state level, meaning assets passing between spouses at death are not subject to estate tax. Unmarried partners receive no equivalent deduction. A partner who inherits a significant estate from a long-term companion may face Illinois estate tax on amounts exceeding $4,000,00035 ILCS 405/2Verified Jul 13, 2026View source, with rates reaching up to 16%35 ILCS 405/2Verified Jul 13, 2026View source. For couples with higher-value estates, this tax exposure makes planning with an estate tax attorney especially important.
Context from SimplyTrust
Unmarried couples planning for incapacity and inheritance face the same document checklist regardless of their state: a will or trust to direct assets, beneficiary designations on accounts, a healthcare proxy, a HIPAA authorization, and a financial power of attorney. SimplyTrust provides free downloadable forms for healthcare proxies and financial powers of attorney at simplytrust.com/forms. Illinois requires notarization for a financial power of attorney and a single witness for a healthcare proxy — requirements that differ from other states, which is why state-specific execution matters. Free resources covering how healthcare proxies work and how to protect against power of attorney abuse are available in the SimplyTrust article library.
For couples who want to address inheritance and avoid probate, a revocable living trust provides a direct path. Assets held in a trust pass to named beneficiaries without a probate proceeding, without the 9 months755 ILCS 5/6-4Verified Jul 14, 2026View source to 14 months755 ILCS 5/6-4Verified Jul 14, 2026View source timeline, and without the court filing and attorney fees that accompany Illinois probate. SimplyTrust's ten estate planning tips for unmarried couples covers additional strategies for protecting a partner's rights, and the Who Inherits Calculator shows exactly what Illinois intestacy law would produce for any family structure — a useful starting point for understanding what happens without a plan in place.