For 2018 through 2025, you cannot deduct investment fees. These fees are treated as miscellaneous itemized deductions subject to a 2% of adjusted gross income floor; these deductions have been suspended for this period.
Debt secured by a principal residence or second home to the extent of the excess of fair market value over acquisition debt. An interest deduction is generally allowed for home equity debt up to $100,000 ($50,000 if married filing separately).