High networth estate planning Chicago families need is shaped by two tax systems at once: the federal estate tax and Illinois’s own, much lower, estate tax. That second layer surprises many residents, because an estate can be comfortably under the federal exemption and still owe tax to the state. This overview covers the main issues; a licensed Illinois estate attorney should handle the actual plan.
Why Illinois is different
The federal exemption is large. Under 2025 legislation, it was set at $15 million per person starting in 2026, indexed afterward, according to the IRS and published guidance; confirm the current number on IRS.gov. Illinois, however, has its own estate tax with an exclusion amount of $4 million, as generally reported by the state attorney general and tax practitioners. It is not portable between spouses in the way the federal exemption is, so a married couple can waste one spouse’s state exclusion without careful planning.
That gap means an estate of, say, $6 million faces no federal tax but may face Illinois tax. Verify the current thresholds before relying on anything here.
Core tools used in high-net-worth plans
Revocable living trust
Used mainly to avoid probate and keep affairs private. Cook County probate is a public process, and many families dislike that. A trust generally does not reduce estate tax by itself.
Credit-shelter or bypass provisions
Designed to use each spouse’s Illinois exclusion. Structuring who gets what at the first death can matter for state tax.
Irrevocable trusts
Used for life insurance, gifts or removing future growth from an estate. They give up control, so they require careful thought.
Lifetime gifting
Annual exclusion gifts are one simple option, and larger gifts use up part of the lifetime exemption. Illinois does not have a gift tax, which sometimes plays into planning, but rules and interactions change, so it needs professional review.
Charitable vehicles
Donor-advised funds, charitable trusts and foundations can serve both giving goals and tax planning.
Assets that need special attention
- Closely held businesses: valuation, succession and liquidity to pay any tax.
- Real estate: Chicago-area property, rental buildings and vacation homes in other states, which may trigger out-of-state probate.
- Retirement accounts: beneficiary designations and income-tax treatment for heirs.
- Life insurance: ownership affects whether proceeds are in the taxable estate. See our discussion of life insurance for high networth individuals.
A sensible planning sequence
- List assets and liabilities, and estimate your net worth.
- Gather wills, trusts, beneficiary forms and business agreements.
- Define goals: who inherits, when, and under what conditions.
- Meet an Illinois estate attorney and a CPA, ideally together.
- Review the plan after major life events or law changes.
High networth estate planning Chicago: a few local wrinkles
Chicago-area families often hold a mix of assets that complicate a plan: a home in the city or suburbs, a rental building or two, an interest in a family business, and perhaps a vacation property in Michigan, Wisconsin or Florida. Each one can raise its own question. Real estate in another state may need a separate court process after death unless it is held in a trust. A business interest may need a buy-sell agreement so that heirs are not forced into a rushed sale.
Liquidity matters
An estate can be large on paper and still short of cash. If Illinois estate tax is due, it is generally payable within a set period after death, so the executor needs a source of funds that does not require selling a building at a bad time. Life insurance owned by a properly drafted trust is one tool people discuss for this, and it is a good topic for your attorney.
Family and incapacity
Good high networth estate planning Chicago attorneys will also ask about blended families, children with special needs, and who should make medical or financial decisions if you cannot. These non-tax points are often what families care about most.
Common mistakes
- Assuming the federal exemption means no tax at all.
- Failing to retitle assets into a trust.
- Outdated beneficiary designations.
- Skipping incapacity planning, such as powers of attorney for property and health care.
Choosing a professional
Look for an attorney who focuses on estate planning in Illinois, ask about fees up front, and ask how they coordinate with your accountant and financial advisor. The Illinois State Bar Association and local bar groups can help you verify licensing.
Bottom line
Estate planning for substantial wealth in Chicago is less about one clever trick than about getting the basics right: current documents, coordinated ownership, and awareness of the state tax. Laws change, so nothing here guarantees a tax result for your situation.
This article is general information, not financial, tax or legal advice.
Photo: Diego Delso, CC BY-SA 3.0, source.
