Estate Planning in Wisconsin

Wisconsin operates under community property law, one of only nine states to do so. Most assets acquired during marriage belong equally to both spouses regardless of whose name is on the title or who earned the income. This fundamental difference from common law states shapes every aspect of estate planning here, from how property passes at death to what a surviving spouse automatically inherits.

Like all states, Wisconsin recognizes formally executed wills and living trusts as valid estate planning tools. A standard will here requires 2Wis. Stat. § 853.03Verified Sep 16, 2026View source adult witnesses, and adding a notarized self-proving affidavit can streamline the probate process later.

A Wisconsin healthcare power of attorney is signed before 2Wis. Stat. § 155.30Verified Jul 15, 2026View source witnesses; notarization is not requiredWis. Stat. § 155.30Verified Jul 15, 2026View source. Witnesses must be at least 18 yearsWis. Stat. § 155.30Verified Jul 15, 2026View source old and cannot be the named agent, blood relatives, anyone who would inherit from the principal, the principal’s healthcare providers or employees of the facility where the principal is a patient. The agent must be at least 18 yearsWis. Stat. § 155.30Verified Jul 15, 2026View source old, and Wisconsin bars the principal’s healthcare providers and employees of the treating facility from serving, subject to the statute’s exceptions.

A Wisconsin financial power of attorney requires neither witnesses nor notarization to be validWis. Stat. § 244.05Verified Sep 20, 2026View source. A notarized signature carries a statutory presumption that it is genuineWis. Stat. § 244.05Verified Sep 20, 2026View source. The document is durable by defaultWis. Stat. § 244.05Verified Sep 20, 2026View source: it stays in effect if the principal becomes incapacitated. A springing power of attorney, one that takes effect only when the principal becomes incapacitated, is permittedWis. Stat. § 244.05Verified Sep 20, 2026View source.

Wisconsin does not impose a state estate tax or inheritance tax, which means estates are only subject to the federal estate tax (currently exempting the first $15,000,00026 USC 2001(c), 2010; P.L. 119-21 §70106Verified Sep 15, 2026View source per person, or $30,000,00026 USC 2001(c), 2010; P.L. 119-21 §70106Verified Sep 15, 2026View source for married couples using portability). This is a meaningful advantage over the states that layer their own death taxes on top of the federal system.

Wisconsin does not require a revocable living trust to be notarizedWis. Stat. § 701.0101 et seq.Verified Jul 15, 2026View source. Wisconsin allows transfer-on-death deeds for real estate, enabling property to pass directly to named beneficiaries without probate. This is a significant probate avoidance tool that doesn't require creating a trust. Transferring property into a revocable trust does not trigger a property tax reassessment in Wisconsin, so property taxes remain at their current level.

Wisconsin automatically revokes an ex-spouse as beneficiary on life insurance, retirement accounts, and similar designations upon divorce. However, these automatic revocations can be overridden by a divorce decree or by re-designating the ex-spouse after the divorce.