CathiM
New Member

Investors & landlords

Yes, your disallowed investment expense from 2016 will carry-forward to 2017 and if unused carry-forward 2018 as long as you file your tax return for 2017.  TurboTax will automatically carry that forward on Form 4952. 

"Form 4562 Part III serves two purposes—calculation any disallowed expense that you can carry forward to future years and determining your net investment interest expense deduction for the current year on line 8. This final amount is what you transfer to line 14 of Schedule A to be used as an itemized deduction on your taxes." Ref., What is Form 4952: Investment Interest Expense Deduction