1. Short title This Act may be cited as the Opportunity Zone Accountability and Transparency Act . 2. Reporting requirements for qualified opportunity funds (a) In general Subpart A of part III of subchapter A of chapter 61 of the Internal Revenue Code of 1986 is amended by inserting after section 6039J the following new section: 6039K. Returns by qualified opportunity funds (a) In general Every qualified opportunity fund shall electronically file an annual return which contains the information described in subsection (b). (b) Information required The information described in this subsection is as follows: (1) Fund information (A) The name, address, and TIN of the qualified opportunity fund. (B) The entity classification of the qualified opportunity fund, such as whether such fund is a partnership, C corporation, S corporation, or real estate investment trust. (C) Certification that the purpose of the qualified opportunity fund is investing in qualified opportunity zone property. (D) The total assets held by the qualified opportunity fund determined as of each measurement date in the reporting period. (E) The aggregate amount of each of the following which is held in the qualified opportunity fund as of each measurement date in the reporting period: (i) Qualified opportunity zone stock. (ii) Qualified opportunity zone partnership interests. (iii) Qualified opportunity zone business property. (F) As of each measurement date in the reporting period, the aggregate amount of investments in the qualified opportunity fund which are described in section 1400Z–2(e)(1)(A)(i) and the ratio of such investments to all investments in such fund. (2) Information regarding qualified opportunity zone corporations and partnerships With respect to each corporation or partnership any qualified opportunity zone stock or qualified opportunity zone partnership interest of which is held by the qualified opportunity fund: (A) The name, address, and TIN of each such corporation or partnership. (B) Certification that such corporation or