Can you deduct management Fees as a expense on a Complex Trust
Nope, not if they're like investment management fees
If you are asking whether the fees can be deducted on the tax return filed by the trust, then the answer is yes.
If you are asking whether the fees can be deducted on your personal tax return, then the answer is no.
@Crusader
If the fee can't be deducted on a personal tax return it doesn't become deductible because the fee is charged to a trust. There are regulations that prevent this.