Every partnership that engages in a trade or business or has gross income must file an information return on Form 1065 showing its income, deductions, and other required information. The partnership return must show the names and addresses of each partner and each partner's distributive share of taxable income. The return must be signed by a general partner. If a limited liability company is treated as a partnership, it must file Form 1065 and one of its members must sign the return.
A partnership is not considered to engage in a trade or business, and is not required to file a Form 1065, for any tax year in which it neither receives income nor pays or incurs any expenses treated as deductions or credits for federal income tax purposes.
See the instructions for Form 1065 for more information about who must file Form 1065.