Who Must File
If you are an individual, estate, or a trust, you
must file Form N-158 to claim a deduction for
your investment interest expense.
Exception. You do not have to file Form N-158 if
all of the following apply.
• Your investment income from interest
and ordinary dividends is more than your
investment interest expense.
• You do not have any other deductible
investment expenses.
• You do not have any carryover of disallowed
investment interest expense from 2020.
as t Turbotax. it appears it does not support this form
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