Does Wisconsin Have an Inheritance or Estate Tax?

Wisconsin does not have an inheritance tax, and it does not impose a state-level estate tax either. If you inherit money, a house, or investments from someone who lived in Wisconsin, the state will not send you a tax bill for what you receive. Federal rules can still apply to very large estates, inherited retirement accounts are taxed as income when you withdraw from them, and a handful of other states impose inheritance taxes that can reach you even if you live in Wisconsin.

When Wisconsin Stopped Taxing Inheritances

Wisconsin repealed its inheritance tax on January 1, 1992.¹ Before then, beneficiaries were taxed directly on what they received. After repeal, the state kept a separate estate tax on the books, but it was a “pick-up” tax tied to a federal credit, so it did not raise anyone’s total bill. When Congress phased that federal credit out, Wisconsin’s estate tax went with it. For anyone who died on or after January 1, 2008, Wisconsin has collected no estate tax at all.²

The practical result is simple. Whether you inherit a bank account, a home, or a stock portfolio from a Wisconsin decedent, Wisconsin itself takes nothing.

What Still Gets Taxed

The absence of a state inheritance tax leads some people to assume everything they inherit arrives tax-free. That is not true for retirement accounts. Distributions from an inherited IRA, 401(k), or similar tax-deferred account count as ordinary income on both your federal and your Wisconsin income tax returns.³ The original owner deferred income tax on that money during their lifetime, and the tax comes due when you pull it out.

Under the SECURE Act, most non-spouse beneficiaries have to empty an inherited retirement account within 10 years of the original owner’s death. The exceptions are a surviving spouse, a minor child of the deceased, a disabled or chronically ill person, or someone no more than 10 years younger than the account owner. Those eligible designated beneficiaries can stretch distributions across their own life expectancy.⁴

How you time withdrawals matters. Taking a lump sum in a single year can push you into a higher tax bracket, while spreading distributions across the 10 years often produces a lower total tax bill.

Federal Estate Tax on Larger Estates

The federal estate tax is the one transfer tax that can still touch a Wisconsin estate. For 2026, the basic exclusion amount is $15,000,000 per person.⁵ Only value above that line is taxed, at rates up to 40%.⁶ Nearly all estates come in well under that threshold and owe nothing.

The Tax Cuts and Jobs Act of 2017 roughly doubled the prior exemption but had it dropping back to around $7 million at the end of 2025. The One, Big, Beautiful Bill Act, signed on July 4, 2025, removed that sunset and made the higher exemption permanent. Starting in 2027, the $15 million base adjusts for inflation each year.⁵

Portability Between Spouses

Married couples can effectively double the exemption through portability. When the first spouse dies, any unused portion of their $15 million exemption transfers to the survivor, letting a couple shield as much as $30 million. The catch: the executor has to file a federal estate tax return (Form 706) for the first spouse’s estate to elect portability, even when no tax is owed. Skip that filing and the unused exemption is lost.⁶

The Step-Up in Basis on Inherited Property

One of the most valuable tax rules for heirs is the step-up in basis. When you inherit property, your cost basis for capital gains purposes resets to the fair market value on the date the person died, not what they originally paid.⁷

Say your parent bought a home in 1985 for $80,000, and it was worth $350,000 on the day they died. If you sell shortly after inheriting it, your basis is $350,000. You would owe little or no capital gains tax. Without the step-up, you would face tax on $270,000 of gain. The rule applies to stocks, real estate, and most other appreciated assets. The executor can alternatively use the value on a date six months after death, but only if they file a federal estate tax return.⁷

When Another State’s Inheritance Tax Can Still Reach You

Wisconsin’s silence on inheritance tax only protects you when the person who died lived in Wisconsin and the property is in Wisconsin. If you inherit from someone in a state with its own inheritance tax, that state can tax you no matter where you live. As of 2025, five states impose an inheritance tax: Kentucky, Maryland, Nebraska, New Jersey, and Pennsylvania. A bequest from a relative in one of those states can produce a tax bill even if you have never been there.

Real estate creates a second angle. If a Wisconsin decedent owned property in a state with an inheritance or estate tax, the laws of that state govern how it transfers. The executor may need to open a separate probate proceeding in that state, with its own legal costs and possible tax exposure.

Marital Property and What Actually Passes at Death

Wisconsin follows a community property model that state law calls “marital property.” Most assets acquired during a marriage belong equally to both spouses. When one spouse dies, the survivor automatically keeps their undivided half of the marital property. That half is not part of the deceased spouse’s estate and is not subject to probate.

Only the deceased spouse’s half of the marital property, plus any separate property they owned individually, passes through the estate. This narrows what an heir actually receives from a married decedent, and it can reduce the size of the taxable estate for federal purposes. When a third party inherits the deceased’s share of marital property, that person becomes a co-owner with the surviving spouse, which can complicate any later sale.

Filings the Personal Representative Still Handles

Even without inheritance or estate tax, several returns may be required after a death in Wisconsin.

Final Individual Income Tax Returns

The personal representative files a final federal Form 1040 covering January 1 through the date of death. Any unfiled prior-year returns need to be filed as well. A surviving spouse who has not remarried can file jointly for the year of death. Wisconsin’s individual return (Form 1 or Form 1NPR) follows the same pattern, due April 15 of the following year for calendar-year filers.³

Estate Income Tax Returns

If the estate’s assets generate more than $600 in income after the date of death, the personal representative files a federal fiduciary return on Form 1041.⁸ Interest, dividends, and rent that the decedent would have reported personally now belong to the estate, which needs its own employer identification number. An automatic 5½-month extension is available on Form 7004.⁹ Wisconsin requires a parallel fiduciary return on Form 2.

Federal Estate Tax Return

For estates with a gross value above $15 million in 2026 (counting lifetime taxable gifts), the personal representative files Form 706 within nine months of death. Form 4768 provides an automatic six-month filing extension, but the tax itself is still due at the nine-month mark.¹⁰ Even estates below the threshold should consider filing Form 706 when the decedent was married, so the surviving spouse can elect portability.

The personal representative is personally responsible for settling tax obligations before distributing assets. Paying beneficiaries out and leaving tax debts behind can leave the representative on the hook for penalties and interest.⁸

1
Wisconsin State Legislature. Estate Tax Informational Paper 7
2
Wisconsin State Legislature. Estate Tax Informational Paper 7
3
State of Wisconsin Department of Revenue. Estates, Trusts, and Fiduciaries
4
Internal Revenue Service. Retirement Topics – Beneficiary
5
Office of the Law Revision Counsel. 26 USC 2010 – Unified Credit Against Estate Tax
6
Internal Revenue Service. What’s New — Estate and Gift Tax
7
Internal Revenue Service. Gifts and Inheritances
8
Internal Revenue Service. Responsibilities of an Estate Administrator
9
Internal Revenue Service. 2025 Instructions for Form 1041
10
Internal Revenue Service. Instructions for Form 706 (Rev. September 2025)