The second half of the test is where every real argument happens. "Made available" is usually easy to establish. What matters is whether the taxpayer's control over receipt is subject to substantial limitations or restrictions, and the regulation gives its own illustration immediately: "if a corporation credits its employees with bonus stock, but the stock is not available to such employees until some future date, the mere crediting on the books of the corporation does not constitute receipt." A book entry is not receipt. A book entry the employee could convert into cash on request is.
The regulation then does something regulations rarely do: it says what is NOT a substantial limitation. For interest, dividends or other earnings on a deposit or account at a bank or similar institution, it states that the following "are not substantial limitations or restrictions on the taxpayer's control over the receipt of such earnings":
- "A requirement that the deposit or account, and the earnings thereon, must be withdrawn in multiples of even amounts";
- The fact that withdrawing during the year would produce earnings "that are not substantially less in comparison with the earnings for the corresponding period to which the taxpayer would be entitled had he left the account on deposit until a later date";
- "A requirement that the earnings may be withdrawn only upon a withdrawal of all or part of the deposit or account";
- "A requirement that a notice of intention to withdraw must be given in advance of the withdrawal."
Item 2 has to be read with the example the regulation attaches to it, or it inverts. The parenthetical is: "for example, if an amount equal to three months' interest must be forfeited upon withdrawal or redemption before maturity of a one year or less certificate of deposit … then the earnings payable on premature withdrawal or redemption would be substantially less when compared with the earnings available at maturity." So the item covers the case where early withdrawal costs you little, and the example describes a penalty large enough to fall outside it. A summary that says "forfeiting three months' interest is not a substantial limitation" states the opposite of the source.
The regulation's own worked examples, in subsection (b), are concrete and quotable. Matured but uncashed interest coupons "are constructively received in the taxable year during which the coupons mature, unless it can be shown that there are no funds available for payment of the interest during such year." Dividends on corporate stock "are constructively received when unqualifiedly made subject to the demand of the shareholder." And the counter-example: where a dividend is declared payable on December 31 and the corporation follows its usual practice of paying by checks mailed so that shareholders receive them in January, "such dividends are not considered to have been constructively received in December." Availability, not the calendar entry, is what the doctrine measures.
Why the doctrine is what makes a deferral election have to come first. If compensation has been earned and the employee can take it, it is taxed whether or not they take it. So an arrangement to postpone tax on compensation cannot work by the employee declining money that is available; it has to work by the money never becoming available, which means the choice has to be locked in before the compensation is earned. Section 409A(a)(4)(B)(i) writes exactly that into statutory law for nonqualified deferred compensation: an election to defer compensation for services performed during a taxable year is valid "only if the election to defer such compensation is made not later than the close of the preceding taxable year," with narrow exceptions for a first year of eligibility and for performance-based compensation measured over at least twelve months. The rigid timing rule is not arbitrary; it is the doctrine turned into a deadline. How those plans are designed, what the permitted payment events are, and what a failure costs are covered on the page for nonqualified deferred compensation.
Section 409A did not replace this doctrine, and believing it did is the most common error in this area. Section 409A(c) is explicit: "Nothing in this section shall be construed to prevent the inclusion of amounts in gross income under any other provision of this chapter or any other rule of law earlier than the time provided in this section." The second sentence of the same subsection closes the other direction, providing that an amount included under section 409A need not be included later under some other rule. So constructive receipt, and the related economic-benefit doctrine, still operate independently and can pull income in sooner than section 409A would. A plan can satisfy section 409A in every respect and still be currently taxable.
One clarification about section 451, because a true statement about it misleads here. The Tax Cuts and Jobs Act did rewrite section 451, adding the financial-statement conformity rule in subsection (b) and the advance-payment rule in subsection (c). Neither has anything to do with constructive receipt: both are accrual-method rules about when a business recognizes revenue. Regulation 1.451-2 itself has not been amended since 1979.