Expanding Broadcast Ownership Opportunities Act of 2021 This bill requires the Federal Communications Commission (FCC) to take certain actions to increase diversity of ownership in the broadcasting industry and establishes a related tax incentive. Specifically, the bill requires the FCC to report to Congress regarding (1) recommendations for increasing the total number of broadcast stations that are owned or controlled by members of minority groups or women, (2) the total number of broadcast stations that are owned or controlled by members of minority groups or women, and (3) whether there is a nexus between diversity of ownership or control of broadcast stations and the diversity of the viewpoints expressed on the stations. In addition, the bill allows companies engaged in the qualifying sale of a broadcast station to receive favorable tax treatment by electing nonrecognition of the gain or loss resulting from the sale. To qualify for this treatment, the sale must result in or preserve ownership and control of a broadcast station by socially disadvantaged individuals.