Wis. Stat. § 193.701: Authorization, form, and acceptance.

(1) Board may authorize. If authorized by the board, a cooperative may accept contributions, make contribution agreements under s. 193.711, and make contribution rights agreements under s. 193.715.

(2) Permissible forms. A person may make a contribution to a cooperative by any of the following means:

(a) By paying money or transferring the ownership of an interest in property to the cooperative, or performing services to or for the benefit of the cooperative.

(b) Through a written obligation that is signed by the person and requires the person to pay money or transfer ownership of an interest in property to the cooperative or to perform services to or for the benefit of the cooperative.

(3) Acceptance of contributions. No purported contribution is to be treated as or considered to be a contribution, unless all of the following apply:

(a) The board accepts the contribution on behalf of the cooperative and in that acceptance describes the contribution, including terms of future performance, if any, and states the value being accorded to the contribution.

(b) The acceptance of the contribution and the contribution’s accorded value are both reflected in the required records of the cooperative.