Except as provided in paragraph (2), every organization exempt from taxation under section
501
(a) shall file an annual return, stating specifically the items of gross income, receipts, and disbursements, and such other information for the purpose of carrying out the internal revenue laws as the Secretary may by forms or regulations prescribe, and shall keep such records, render under oath such statements, make such other returns, and comply with such rules and regulations as the Secretary may from time to time prescribe; except that, in the discretion of the Secretary, any organization described in section
401
(a) may be relieved from stating in its return any information which is reported in returns filed by the employer which established such organization.