Under U.S. tax law for an accrual-basis taxpayer, accrued compensation is subject to specific timing rules for deductibility. Generally, compensation is considered "deferred" and is not deductible in the year it is accrued if it is paid more than 2½ months after the end of that tax year. Instead, the deduction must be taken in the year the compensation is actually paid. This "2½ month rule" is an exception that allows an employer to deduct accrued compensation in the year the services were performed, provided the payment is made within that short period following the tax year's close. This prevents indefinite deferral of payments while accelerating tax deductions.

A. Retained earning: This is an equity account on the balance sheet representing cumulative net income minus dividends; it is not a deductible expense.

C. Paid-In capital: This is an equity account representing funds raised from shareholders in exchange for stock; it is not a deductible expense.

D. Bond compensation: This term is imprecise. Interest paid to bondholders is deductible, but its timing is governed by different rules (e.g., OID rules), not the 2½ month rule for employee compensation.

1. U.S. Internal Revenue Service. (2023). Publication 535, Business Expenses. Chapter 5, "Salaries and Wages," under the section "Deferred Compensation." It states, "You can't deduct accrued salaries, wages, and other compensation your employees earn during the tax year until you actually pay them... However, an exception allows you to deduct accrued compensation if you pay it within 2½ months after the end of your tax year."

2. U.S. Treasury Regulation § 1.404(b)-1T, Q&A-2(b)(1). This regulation provides the authoritative definition of the rule. It states that a plan is presumed to defer the receipt of compensation for more than a brief period of time if the compensation is received after the 15th day of the third calendar month after the end of the employer's taxable year (i.e., 2½ months).

3. Donaldson, S. L., & Kramer, S. S. (2021). Federal Taxation: Research, Planning, and Practice. Chapter 7, "Business Deductions." University-level tax textbooks widely cover this topic, explaining that under IRC §404(a)(5), deductions for deferred compensation are generally allowed in the year the employee includes the amount in gross income, with the key exception being the 2½ month rule for non-deferred payments.