Based on your facts, the single member LLC owned by the multi-member LLC is deemed a disregarded entity for income tax purposes. As such, it is treated as if the multi-member LLC had a division and all revenue, expenses, etc. of the single member LLC will just be reported on the multi-member LLC tax return.
*A reminder that posts in a forum such as this do not constitute tax advice.
Also keep in mind the date of replies, as tax law changes.
