Overview
Wisconsin is a community property state — technically called a “marital property” state — and the only one in the Midwest. The Wisconsin Marital Property Act (Chapter 766) governs ownership of assets and debts during marriage, using “marital property” as the equivalent of community property. The Act was modeled on the Uniform Marital Property Act and took effect in 1986, replacing Wisconsin’s prior common-law system.
What Counts as Marital Property?
Under the Wisconsin Marital Property Act, all property acquired during the marriage is presumed to be marital property owned equally (50/50) by both spouses. This includes wages and salaries, income from marital property, and property purchased with marital funds. Debts incurred during the marriage for family purposes are also shared marital obligations.
What Stays Separate?
Property owned by either spouse before the marriage is “individual property” (Wisconsin’s term for separate property). Gifts and inheritances received by one spouse individually, even during the marriage, are also individual property. Income from individual property that is kept clearly separate from marital funds generally retains its individual character, though this can be affected by the “mixing” rules under the Act.
Prenuptial Agreements in Wisconsin
Wisconsin calls prenuptial agreements Marital Property Agreements, governed by Wisconsin Statutes § 766.58. Before marriage, the agreement is called a “predetermination agreement” and functions as a prenup. It must be in writing and signed by both parties. Full financial disclosure is required, and the agreement must not be procured by fraud, duress, or undue influence. Wisconsin does not require a waiting period, but courts examine the circumstances closely when a prenup is signed shortly before a wedding.
Key Considerations
- Wisconsin’s marital property system is relatively recent (1986) and has a well-developed body of case law interpreting its provisions.
- The “mixing” doctrine under the Act can cause individual property to become classified as marital property when commingled — keeping separate accounts is essential.
- Wisconsin’s system applies to all residents regardless of where they were married, which is important for couples relocating from other states.
- Business owners should address both the value of the business at the time of marriage and the appreciation during marriage in a Marital Property Agreement.
Key Statutes
- Wisconsin Statutes § 766.31 (marital property)
- Wisconsin Statutes § 766.01–766.97 (Wisconsin Marital Property Act)
- Wisconsin Statutes § 766.58 (marital property agreements)
This is educational content, not legal advice. Consult a licensed Wisconsin family law attorney for guidance specific to your situation.