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Wisconsin Marital Property: Community Property by Another Name
Support GuideWisconsin16 min read

Wisconsin Marital Property: Community Property by Another Name

Wisconsin marital property is community property. Wis. Stat. 861.01 keeps the survivor's half out of probate; the decedent's half passes by will.

By Settled Editorial

Wisconsin is a community property state that uses its own name for the idea. Chapter 766 of the statutes, the Marital Property Act, presumes that everything a married couple owns is marital property, with each spouse holding "a present undivided one-half interest in each item." When one spouse dies, Wis. Stat. 861.01 keeps the survivor's half out of the estate entirely: the surviving spouse "retains his or her undivided one-half interest in each item of marital property," and that interest "is not subject to administration."

IRS Publication 555 lists Wisconsin among the nine community property states, and the federal tax rules treat marital property as community property. But Wisconsin's version has two wrinkles the other eight states do not share: a determination date that decides when the system starts applying to a couple, and a deferred marital property election that stands in for the elective share. Both change real outcomes at death. Every rule below was read at the official Wisconsin Statutes on August 16, 2026, current through 2025 Wis. Act 247. For the court process that handles the decedent's half, start with how Wisconsin probate works.

The Determination Date Decides When The System Applies

The Marital Property Act does not reach back to the wedding. Under Wis. Stat. 766.01(5), a couple's "determination date" is the last of three moments: the marriage, 12:01 a.m. on the date both spouses are domiciled in Wisconsin, and 12:01 a.m. on January 1, 1986.

Classification starts from that date. Wis. Stat. 766.31(6) treats property owned when the marriage and the determination date coincide as the owner's individual property, and property from a marriage that predates the determination date is "not classified by this chapter" at all; during the marriage it is treated as if it were individual property. That unclassified layer is what becomes deferred marital property at death, covered below. A couple who married in Illinois in 1995 and moved to Madison in 2020 has a 2020 determination date, and everything they brought along sits in that deferred layer.

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Marital Property And Individual Property

The presumption runs one way. 766.31(1) and (2): "All property of spouses is marital property except that which is classified otherwise by this chapter," and "[a]ll property of spouses is presumed to be marital property." Whoever claims an asset is individual property carries the burden.

Individual property after the determination date comes mainly from 766.31(7): property one spouse receives "[b]y gift during lifetime or by a disposition at death by a 3rd person to that spouse and not to both spouses," property exchanged for or bought with individual property, appreciation of individual property (subject to the mixing rules of 766.63), property classified individual by decree or marital property agreement, and most of a personal injury recovery.

Income is the wrinkle to watch. Under 766.31(4), income "earned or accrued by a spouse or attributable to property of a spouse during marriage and after the determination date is marital property." Rent from a farm one spouse inherited is marital property in Wisconsin, a rule it shares with Idaho, Louisiana and Texas and one that surprises couples arriving from the other community property states.

What Each Half Does At Death

What it isWhere it goes when a spouse dies
Marital propertyThe survivor retains their one-half under Wis. Stat. 861.01(1), outside administration. The decedent's one-half passes through the decedent's estate, and its recipient becomes a tenant in common with the survivor.
Survivorship marital propertyVests solely in the surviving spouse by nontestamentary disposition. The first spouse to die cannot will any of it away.
The decedent's individual propertyPasses in full by will, or by intestacy under Wis. Stat. 852.01.
The survivor's individual propertyStays with the survivor. It is not part of the estate.

The estate side of the first row comes from two sections working together: 861.01(2) makes the successor to "the decedent's 50 percent interest in marital property" a tenant in common with the survivor, and Wis. Stat. 857.01 hands the personal representative "the interest of the decedent" in the decedent's property. So a Wisconsin will reaches the decedent's half of the marital property and all of the decedent's individual property, and nothing of the survivor's.

Intestacy is generous to one family shape and harsh to another

Wis. Stat. 852.01(1)(a) gives the surviving spouse the entire net intestate estate when the decedent left no issue, or when every surviving child is a child of both spouses. Most married Wisconsin decedents fall there, and their children inherit nothing by intestacy.

The blended-family rule cuts the other way, in a detail worth quoting. When any surviving child is not a child of the surviving spouse, the spouse takes "one-half of decedent's property other than" the decedent's interest in marital property and in property held equally and exclusively with the spouse as tenants in common. The decedent's half of the marital property passes to the decedent's issue, not to the spouse. The survivor keeps their own half under 861.01, so the house does not leave the family, but the spouse and a stepchild end up as tenants in common in the other half. Who inherits in Wisconsin without a will walks every branch of the statute.

Deferred Marital Property: The Election That Replaces The Elective Share

Wisconsin has no general elective share against the estate, because the survivor already owns half of everything the system classifies. The protection aims instead at the property the system never classified. Wis. Stat. 851.055 defines deferred marital property: acquired while the spouses were married, not classified by chapter 766, that "[w]ould have been classified as marital property under ch. 766 if the property had been acquired when ch. 766 applied." Pre-1986 acquisitions and out-of-state years produce it.

Wis. Stat. 861.02(1) then gives the surviving spouse "the right to elect an amount equal to no more than 50 percent of the augmented deferred marital property estate." The augmented estate counts deferred marital property "irrespective of where the property was acquired ... including real property located in another jurisdiction," reaches probate and nonprobate transfers and gifts made within two years of death, and nets out what the survivor holds already. The election has its own deadlines and procedure, and what a Wisconsin surviving spouse can claim covers them alongside the allowances.

The planning point runs in both directions. A long-married couple who moved to Wisconsin late owns mostly deferred marital property, so the election is the survivor's real protection against a will that leaves them out. And a marital property agreement can classify that same property as marital outright, which converts the survivor's contingent election into present ownership.

Survivorship Marital Property

Wis. Stat. 766.60(5)(a) lets a couple add a survivorship right with three words: when a document titles an asset as "survivorship marital property," then on the death of a spouse "the ownership rights of that spouse in the property vest solely in the surviving spouse by nontestamentary disposition at death," and "[t]he first deceased spouse may not dispose at death of any interest in survivorship marital property." No probate, no will contest over that asset.

Two conversion rules do quiet work. Holding property merely "as marital property" does not create survivorship; the survivorship words must appear. And under 766.60(4)(b)1., a joint tenancy created exclusively between spouses after the determination date is survivorship marital property, so many Wisconsin couples hold their home in this form without knowing its name. Mortgages and liens survive the transfer; the survivor takes subject to them.

Marital Property Agreements

Wis. Stat. 766.58 is the couple's steering wheel. An agreement must be "a document signed by both spouses," needs no consideration, and can reclassify any of the couple's property, presently owned or after-acquired, as marital or individual.

The provision that matters most at death is 766.58(3)(f): spouses may agree "that upon the death of either spouse any of either or both spouses' property, including after-acquired property, passes without probate to a designated person, trust or other entity by nontestamentary disposition." That clause is Wisconsin's version of the community property agreements Washington couples use to skip probate on the first death. Divorce revokes such a provision, and after the first death the survivor may amend the agreement's disposition of their own property unless the agreement forbids it.

Three statutory fill-in-the-blank agreements exist, and their labels mislead:

  • Wis. Stat. 766.588 classifies present and future property as marital property. It is terminable by either spouse on 30 days' notice, and it self-terminates three years after signing unless a financial disclosure schedule was attached. Its own printed notice warns, in capitals, that it does not by itself pass marital property to the survivor at death.
  • Wis. Stat. 766.589 does the reverse, classifying would-be marital property as individual property, with the same 30-day termination and three-year sunset, and it preserves the survivor's deferred marital property election over what it declassifies.
  • Wis. Stat. 766.587 was the transition-year opt-out: executable from January 1, 1986, and by its own terms it "terminates on January 1, 1987." It is history, not an option.

An agreement is unenforceable against a spouse who proves it was unconscionable when made, involuntary, or signed without fair and reasonable disclosure of the other spouse's finances (766.58(6)). Both the at-death clause and any reclassification move real rights, including creditor exposure under Wis. Stat. 766.55, so have a Wisconsin attorney draft or review one.

Where The Halves Meet The Outside World

  • The TOD deed knows about marital property. Wis. Stat. 705.15 lets an interest in real property pass to a recorded TOD beneficiary outside probate, and it names marital property and survivorship marital property as transferable interests. A marital property interest needs both spouses' signatures on the designation, and the designation is ineffective unless recorded with the register of deeds before death. The Wisconsin TOD deed guide covers the mechanics, and ways to keep assets out of Wisconsin probate sets every tool side by side.
  • Medicaid estate recovery is expanded, and it reaches the survivor's estate. Wis. Stat. 49.496 defines a decedent's property to include assets passing "through joint tenancy, tenancy in common, survivorship, life estate, revocable trust, or any other arrangement, excluding an irrevocable trust," and directs the department to claim against the estate of a recipient "and against the estate of a nonrecipient surviving spouse," with a rebuttable presumption that 100 percent of the surviving spouse's estate was marital property held with the recipient. A companion section, Wis. Stat. 49.849, reaches nonprobate property with the same definitions. Recovery waits while a spouse or a minor or disabled child survives; waiting is not forgiveness.
  • Creditors follow the classification. 766.55 routes family-purpose obligations to all marital property, premarital obligations to the debtor spouse's non-marital property plus what would have been theirs unmarried, and other debts to the debtor's individual property and the debtor's half of marital property, in that order.

The Basis Answer

Community property carries a federal income-tax advantage at the first death, and Wisconsin's system participates. 26 U.S.C. 1014(b)(6) treats the surviving spouse's one-half of community property as acquired from the decedent when at least half of the community interest was includible in the decedent's gross estate, so both halves take a date-of-death basis. IRS Publication 555 applies the community property rules to Wisconsin marital property, listing Wisconsin among the nine community property states. A Milwaukee duplex bought for $180,000 and worth $520,000 at the first death can give the survivor a $520,000 basis on the whole building. Deferred marital property that was never reclassified does not get the double step-up, which is one more reason late-arriving couples should price a classification agreement. Your basis in inherited Wisconsin property works the arithmetic; confirm any sale with a CPA.

Sorting Your Own Assets

Wisconsin adds one question the other community property states skip, so work in this order:

  1. What is the couple's determination date? The last of the wedding, both spouses becoming Wisconsin residents, and January 1, 1986. Everything before it is unclassified, which usually means deferred marital property at death.
  2. When and how was the asset acquired after that date? Gifts and inheritances to one spouse are individual property; earnings and what they bought are marital property; income from individual property is marital property too.
  3. What does the title say? "Survivorship marital property," or a spouses-only joint tenancy created after the determination date, passes outside probate. A recorded TOD designation does the same for real estate.
  4. Did the couple sign anything? A 766.58 agreement, a statutory 766.588 or 766.589 form, or a prenuptial agreement can reclassify property or pass it without probate at death.

Pull the deeds, the account agreements and any signed agreements before deciding anything. Where the timeline crosses 1986, a move from another state, or a remarriage with children, hand the file to a Wisconsin probate attorney.

Frequently Asked Questions

Is Wisconsin a community property state?

Yes, under its own vocabulary. IRS Publication 555 lists Wisconsin among the nine community property states, alongside Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas and Washington. Wisconsin adopted the Uniform Marital Property Act as Wis. Stat. chapter 766 and calls the shared property marital property: all property of spouses is presumed marital property, and each spouse has a present undivided one-half interest in each item.

Who owns marital property when a spouse dies in Wisconsin?

Wis. Stat. 861.01 keeps the halves apart. The surviving spouse retains his or her undivided one-half interest in each item of marital property, and that interest is not subject to administration. The decedent's one-half interest passes through the decedent's estate, by will or by intestacy, and whoever receives it becomes a tenant in common with the surviving spouse.

Does the surviving spouse inherit everything without a will in Wisconsin?

When every surviving child is a child of both spouses, yes: Wis. Stat. 852.01 gives the spouse the entire net intestate estate. When the decedent left a child of another relationship, the statute turns sharply. The spouse then takes one-half of the decedent's property OTHER than marital property, and none of the decedent's half of the marital property, which passes to the decedent's issue. The survivor still keeps their own half under 861.01.

What is deferred marital property in Wisconsin?

Property defined by Wis. Stat. 851.055: acquired while the spouses were married, not classified by chapter 766, that would have been marital property if the chapter had applied when it was acquired. It covers property from before 1986 and property acquired while the couple lived in another state. Wis. Stat. 861.02 gives the surviving spouse an election of up to 50 percent of the augmented deferred marital property estate, which is Wisconsin's only elective share.

What is survivorship marital property?

A title form under Wis. Stat. 766.60(5)(a). When the words survivorship marital property appear in the ownership document, the deceased spouse's rights vest solely in the surviving spouse by nontestamentary disposition at death, outside probate, and the first spouse to die may not dispose of any interest in it by will. A joint tenancy created exclusively between spouses after the determination date is survivorship marital property automatically.

Can a Wisconsin marital property agreement pass property without probate?

Yes, if it says so. Wis. Stat. 766.58(3)(f) lets spouses agree that on the death of either, any of their property, including after-acquired property, passes without probate to a designated person, trust or other entity. The statutory form agreements in 766.588 and 766.589 classify property but do not by themselves transfer it at death; the 766.588 form's own notice warns exactly that.

Sources:

It is not legal advice.

Information current as of August 16, 2026

Settled Estate is not a law firm, and this content is for informational purposes only and does not constitute legal advice. Probate laws and procedures in Wisconsin can change. Consult with a qualified attorney for advice specific to your situation. Full disclaimer.

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