Wisconsin marital property and buying a home

What counts as marital property and what does not?

Chapter 766, the Marital Property Act, says the legislature’s intent is that marital property is “a form of community property” (§ 766.001). The statutes were read as updated through October 1, 2026.

Property acquired by a spouse during marriage is individual property, not marital, if it comes (§ 766.31(7)):

• by gift or inheritance from a third person to that spouse alone;
• in exchange for or with the proceeds of other individual property;
• as appreciation of individual property, except to the extent § 766.63 makes it marital;
• through a decree or a marital property agreement that says so.

Everything else is marital, and income from property is marital property too (§ 766.31(4)). IRS Publication 555 (December 2024) notes that in Wisconsin, as in Idaho, Louisiana and Texas, income from most separate property is community income for federal tax purposes.

The Act applies from the “determination date,” the last of: the marriage, the date both spouses became Wisconsin domiciliaries, or January 1, 1986 (§ 766.01(5)). Property you owned before then is not reclassified by the Act (§ 766.31(8)).

How should spouses hold title to a home?

Survivorship means that when one spouse dies, that spouse’s interest passes directly to the survivor, and the first spouse to die cannot leave it to anyone else by will (§ 766.60(5)(a)). A mortgage on the home does not defeat survivorship; the survivor takes subject to the mortgage. Section 766.60 also lets spouses hold title as “marital property” without survivorship. If you want something different from the default, say so in the deed or in a marital property agreement.

Spouses can change the classification of property by a conveyance signed by both, by a marital property agreement or by a unilateral statement about income (§ 766.31(10)).

Who must sign to sell or mortgage the home?

Two rules interact:

1. Management (§ 766.51). A spouse acting alone may manage marital property held in his or her name alone. Property held in both names (other than “or”) is managed only if the spouses act together.
2. Homestead conveyances (§ 706.02(1)(f)). A conveyance of a married person’s interest in a homestead must be “signed, or joined in by separate conveyance, by or on behalf of each spouse,” except conveyances between spouses. On a purchase-money mortgage, only the purchaser signs. A “homestead” is the dwelling and the land reasonably necessary for it, from a quarter acre up to 40 acres (§ 706.01(7)).

Wisconsin case law summarized in the statutes says the spouse’s joining in a homestead deed cannot be waived (Wangen v. Leum, 1970). A buyer who is a good-faith purchaser from a spouse with management rights takes free of the other spouse’s claim (§ 766.57(3)), but that protection is not a reason to skip the second signature.

What happens at divorce?

Divorce is governed by chapter 767, not by the Marital Property Act alone. Under § 767.61, the court divides the parties’ property and presumes an equal division of everything except gifts and inheritances. The court may depart from equal after weighing listed factors, including the length of the marriage, each spouse’s contribution, the desirability of awarding the family home to the parent with primary physical placement, tax consequences and any written agreement. A marital property agreement is binding unless its terms are inequitable (§ 767.61(3)(L)).

Under IRS Publication 555, an equal or unequal division of community property in a divorce settlement does not by itself cause a gain or loss.

What happens when a spouse dies?

Each spouse has a present undivided one-half interest in marital property (§ 766.31(3)). If the home is survivorship marital property, it passes to the survivor outside probate. A surviving spouse also may elect a share of “deferred marital property,” up to 50% of that estate (§ 861.02).

For taxes, Publication 555 explains that when one spouse dies, the full fair market value of community property, including the survivor’s half, generally becomes the basis of the whole property, if at least half of its value is included in the deceased spouse’s estate. Its example: a basis of $80,000 and a value of $100,000 gives each half a basis of $50,000. That can reduce capital gains tax on a later sale; see our guide to capital gains on a home sale.

Can a marital property agreement change the rules?

Yes. Spouses, or couples planning to marry, can sign a marital property agreement (§ 766.58). It must be signed by both, can cover ownership, management and what happens at divorce or death, and can be changed only by a later agreement. It is not enforceable if the other spouse proves it was unconscionable, signed involuntarily, or signed without fair disclosure of finances. It cannot hurt a child’s right to support.

Because a title decision affects taxes, estate planning and creditors, it is worth a conversation with a Wisconsin real estate or family attorney before closing. See our pages on title and closing costs and on real estate attorneys in Wisconsin.