Business & farm

from 1065 instructions

Domestic Partnerships
Except as provided below, every domestic partnership must file
Form 1065, unless it neither receives income nor incurs any
expenditures treated as deductions or credits for federal income tax
purposes.

an LLC has the same filing requirements.

thus technically no return is required. When working for a CPA firm we always filed a "Final Return" even if not required. 

to save money, you can download the 065 from the iRS website  and complete it manually. enter "0" for total revenue and total expenses e

there should be no assets, liabilities or equity in schedule L at the end of the year. 

https://www.irs.gov/pub/irs-pdf/f1065.pdf