Probate is the court process for passing on property that was in the person's name alone, with no joint owner or named beneficiary. Jointly owned property, accounts with a payable-on-death beneficiary, and life insurance and retirement accounts with a named beneficiary usually pass outside probate.
Transfer by affidavit. If the person's property subject to probate in Wisconsin totals $50,000 or less, an heir or another eligible person can usually collect it with a sworn affidavit instead of a court case (Wis. Stat. 867.03).
Informal administration. When the paperwork is in order and nobody disagrees, the estate is handled through the probate registrar in the county where the person lived, without hearings before a judge. It is the usual path when nobody disagrees.
Formal administration. A dispute over the will, an heir who cannot be found, or a complicated estate sends the case before a circuit court judge.
On every path the personal representative's job is the same: find and protect the property, notify heirs and creditors, pay valid debts and final taxes, then distribute what is left.