In order to be structured as a Qualified Opportunity Fund, an LLC needs only (i) to be treated as a corporation or a partnership for federal income tax purposes and (ii) to have a statement in its charter or operating agreement (or preferably both) stating its purpose of investing in qualified opportunity zone property and describing the qualified opportunity zone business in which it is engaged. In order to be treated as a corporation, the LLC would have to file a Form 8832 electing to treat it as such. In order to be treated as a partnership, the LLC would need to have at least two members.