The fiduciary of a domestic decedent's estate, trust, or bankruptcy estate uses Form 1041 to report the income, deductions, gains, losses, etc. of the estate or trust, the income that is either accumulated or held for future distribution or distributed currently to the beneficiaries, any income tax liability of the estate or trust, and employment taxes on wages paid to household employees.
Form 1065 is an information return used to report the income, gains, losses, deductions, credits, etc., from the operation of a partnership. A partnership does not pay tax on its income but "passes through" any profits or losses to its partners. Partners must include partnership items on their tax or information returns.