Opportunity Zone Accountability and Transparency Act This bill requires a qualified opportunity fund to file an annual return containing certain information, including (1) the name, address, and tax identification number of the fund; (2) certification that the purpose of the fund is investment in qualified opportunity zone property, and (3) the total assets held by the fund in the reporting period. The return must also provide similar information for opportunity zone corporations and partnerships and real property used in an opportunity zone business. The bill provides for a penalty for the failure of a fund to file a correct information return.