Illinois estate-tax planning for married couples requires looking at both spouses’ deaths. Leaving everything to a spouse may defer tax, but it does not automatically preserve the first spouse’s unused Illinois exclusion.
A QTIP marital trust can provide for the surviving spouse while directing what happens to the remaining property later. Whether it is appropriate depends on the family’s assets, beneficiaries, and tax circumstances.
Why spouses cannot simply assume an $8 million exclusion
Illinois does not allow the unused state exclusion to pass automatically to the surviving spouse. The Attorney General’s estate-tax guidance expressly distinguishes Illinois from federal portability.
Consider a couple with substantial assets who intend to leave everything outright to the survivor. If a qualifying marital deduction eliminates tax at the first death, that does not establish what will happen when the survivor later owns the combined property.
A plan should therefore show which assets each spouse owns, what passes at the first death, and what remains in the survivor’s estate. A household balance sheet alone does not answer those questions.
What a QTIP marital trust does
QTIP means qualified terminable interest property. The federal requirements include a qualifying lifetime income interest for the surviving spouse and the appropriate election. Generally, the spouse must receive all income at least annually, and no person may appoint the property to anyone else during that spouse’s life. See Section 2056(b)(7).
A trust can also authorize principal distributions under its terms. The remainder provisions can address children or other beneficiaries, subject to any powers the document grants. This can be useful in a blended family where support for a spouse and the eventual inheritance both need attention.
The marital deduction generally defers the estate-tax question. QTIP property is ordinarily included at the surviving spouse’s death under the applicable rules; the federal rule appears in Section 2044.
How a credit shelter trust differs
A credit shelter, or bypass, trust is designed to use the first spouse’s available exclusion while keeping qualifying trust property outside the survivor’s taxable estate. The survivor may still be a beneficiary, depending on the terms.
The design requires balancing access to assets, trustee responsibilities, family control, and income-tax consequences. An estate-tax benefit should not be assumed to outweigh every other consideration.
For example, property outside the survivor’s estate generally does not receive another basis adjustment merely because that spouse dies. Section 1014 governs basis for qualifying property acquired from a decedent. Asset-specific analysis matters, especially when the family expects to sell appreciated investments.
Elections and funding complete the plan
Illinois permits a separate QTIP election, with requirements for a timely Illinois return and identification of the elected property. Signing a trust agreement does not make that election. See the Illinois instructions.
Funding formulas also matter. They determine which assets and subsequent changes in value are allocated to each share. Do not assume that distributing appreciated property to satisfy a fixed-dollar obligation has the same income-tax result as funding a fractional share. The distribution regulation addresses recognition of gain or loss for certain distributions in kind. Have the fiduciary obtain advice before making the transfers.
Retain valuations, allocation records, elections, and trust-account statements. These are working records for later trust administration, not simply paperwork filed away after signing.
Review both deaths with the same asset inventory
Start with what counts toward an Illinois taxable estate. Use the Illinois estate tax calculator for a properly determined individual estate input, including applicable Illinois QTIP adjustments; the calculator does not design or elect a marital deduction.
Bring both spouses’ asset records, beneficiary forms, existing documents, and any prior estate-tax returns to a planning consultation. The review should show how the proposed arrangement supports the survivor and what it means for the eventual beneficiaries.