Investment Interest Expense

Sanjay Bhatt buys 40,000 dollars of marginable stock and meets the 50 percent Regulation T call with a 20,000 dollar cash deposit. Over the next twelve months the firm charges 1,900 dollars of margin interest, which Sanjay never pays in cash, and the stock's market value is unchanged. What is his equity at the end of the year?

1. A.18,100 dollarsCorrect. The debit rises to 21,900 with the unpaid interest, leaving 40,000 - 21,900 = 18,100 of equity.
2. B.20,000 dollarsThis assumes the interest charge never touched the account. Unpaid margin interest is added to the debit balance.
3. C.16,200 dollarsThis subtracts the interest twice, once from equity and once through the debit. The charge is counted only once.
4. D.21,900 dollars21,900 dollars is the year end debit balance, which is what Sanjay owes, not what he owns.

Why: Sanjay borrowed 20,000 dollars, so his opening debit balance was 20,000. Margin interest that is not paid in cash is simply charged to the account, raising the debit to 20,000 + 1,900 = 21,900. With market value still 40,000, equity is 40,000 - 21,900 = 18,100 dollars. This is why a flat market still erodes a margin customer's equity: the interest meter runs regardless of performance.

Elias borrows 50,000 dollars on margin and uses the entire amount to buy tax-exempt municipal bonds. How is the margin interest he pays treated on his federal income tax return?

1. A.Fully deductible as investment interest expense against his investment incomeThe investment interest deduction is expressly unavailable when the borrowing funds tax-exempt securities.
2. B.Not deductible, because the borrowing was used to carry tax-exempt securitiesDeducting the cost of carrying income that is never taxed is disallowed, and the rule tracks the use of the borrowed funds.
3. C.Deductible only to the extent of the tax-exempt interest the bonds produceThis has the limitation backwards; the tax-exempt interest is precisely what makes the expense nondeductible rather than what allows it.
4. D.Added to the cost basis of the municipal bonds and recovered at maturityNondeductible interest is simply lost as a deduction; it does not convert into basis in the securities purchased.

Why: Interest on debt incurred to purchase or carry tax-exempt securities is not deductible. Allowing the deduction would let a taxpayer write off the cost of producing income that is never taxed, effectively subsidizing the position twice. The disallowance follows the use of the borrowed funds, so it applies even though the loan is a general margin borrowing.

During the year Rosalind Ivey pays 9,200 dollars of margin interest on a taxable portfolio and reports 5,400 dollars of taxable interest and nonqualified dividend income, with no other investment income. How much of the margin interest may she deduct as investment interest expense this year?

1. A.9,200 dollars, the full amount of margin interest paidMargin interest on a taxable portfolio is deductible, but only to the extent of net investment income. The full amount exceeds that limit.
2. B.3,000 dollars, with the balance carried forwardThe 3,000 dollar annual cap applies to net capital losses deducted against ordinary income, not to investment interest expense.
3. C.5,400 dollars, with 3,800 dollars carried forward indefinitelyCorrect. The deduction is capped at net investment income, and the excess carries forward to future years.
4. D.None, because margin interest is treated as personal interestInterest on debt used to carry taxable investments is investment interest, not personal interest. It is nondeductible only when the borrowing carries tax exempt securities.

Why: Investment interest expense is deductible only up to net investment income for the year. Rosalind has 5,400 dollars of qualifying investment income, so 5,400 dollars of the 9,200 dollars she paid is currently deductible. The remaining 3,800 dollars is not lost; it carries forward indefinitely and may be deducted in a later year against future net investment income.