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2017
The investment interest expense deduction: Less beneficial than you might think
Investment interest — interest on debt used to buy assets held for investment, such as margin debt used to buy securities — generally is deductible for both regular tax and alternative minimum tax purposes. But special rules apply that can make this itemized deduction less beneficial than you might think.
Limits on the deduction
First, you can’t deduct interest you incurred to produce tax-exempt income. For example,