Wis. Stat. § 179.0301: Becoming limited partner.

(1) Upon formation of a limited partnership, a person becomes a limited partner as agreed among the persons that are to be the initial partners.

(2) After formation of a limited partnership, a person becomes a limited partner in any of the following ways:

(a) As provided in the partnership agreement.

(b) As the result of a transaction effective under subch. XI.

(c) With the affirmative vote or consent of all the partners.

(d) As provided in s. 179.0801 (1) (d) or (e).

(3) A person may become a limited partner without doing any of the following:

(a) Acquiring a transferable interest.

(b) Making or being obligated to make a contribution to the limited partnership.