delivered the opinion of the Court.

This case presents the question whether the “additional premium” paid in 1963 by a state-chartered savings and loan association to the Federal Savings and Loan Insurance Corporation under the compulsion of § 404 (d) of the -National Housing. Act, as amended, 12 U. S. C. *346§ 1727 (d),1 is deductible by the association, for income tax purposes, as an ordinary and necessary business expense under § 162 (a) of the Internal Revenue Code of 1954, 26 U. S. C. §162 (a).'

The Commissioner of Internal Revenue determined a deficiency of $461,454.38 in the 1963 cash basis federal income tax of- Lincoln Savings and Loan Association. Nearly all the deficiency was attributable to the disallowance. of a deduction claimed for Lincoln’s payment of $882,636.86 made pursuant to § 404 (d). Lincoln sought redetermination in the Tax Court, Judge Raum, in a decision reviewed by the court without dissent, upheld the deficiency. 51 T. C. 82 (1968). On appeal the Ninth Circuit reversed, one judge dissenting. 422 F. 2d 90 (1970).2 Because of the importance of the issue for *347the sayings and loan industry and for the Government, we granted certiorari. 400 U. S. 901 (1970). .

I

The pertinent facts are not in dispute. Lincoln is a California savings and loan association organized in 1925 and is licensed under- state law. It is subject to Division 2 of the California Financial Code, § 5000 et seq., and is-also subject to the regulations of the State’s Savings and Loan Commissioner. California Administrative Code, Tit. 10, c. 2.

In 1936 Lincoln applied for membership in the Federal Home Loan Bank of San Francisco (then of Los Angeles). That application was granted and Lincoln has remained a member of t'he Bank since that time. The San Francisco Bank is one of 12 regional ones established and supervised by the Federal Home Loan Bank Board under the Federal Home Loan Bank Act of 1932, 47 Stat. 725, as amended, 12 U. S. C. §§ 1421-1449. These banks provide liquidity and funds for mortgage lending by making advances to member institutions as needed to meet unusual or heavy withdrawal and credit demands. Each member must purchase capital stock in -its bank in an amount equal to 1% of its outstanding “aggregate unpaid loan principal” and maintain that percentage. 12 U. S. C. § 1426 (c).

In June 1938 Lincoln became, and still is, an institution insured by the Federal Savings and Loan Insurance Corporation (FSLIC), a corporation created by § 402 of the National Housing Act, 48 Stat. 1256, 12 U. S. C. § 1725, and under the direction of the Federal Home Loan Bank Board. By statute FSLIC has the duty to insure the accounts of all federal savings and loan associations; it also may insure the accounts-of qualified state-chartéred associations such as Lincoln. ' Section 403 (a), 12 U. S. C. § 1726 (a).

*348Each institution so insured was originally required,, by § 404 (a) of the Act, 48 Stat. 1258, to pay FSLIC an annual insurance premium measured by the total amount' of its accounts plus creditor obligations.3 The statute provided that these premiums were to continue, annually until FSLIC’s reserve for losses amounted to 5% of the insured accounts plus creditor obligations of all its insured institutions, and at such intervals thereafter as were necessary to maintain the reserve at that level.

This pattern was changed, however, effective January 1, 1962, by the Act of September 8, 1961, 75 Stat. 482. That Act, by .its § 3, amended § 404 (a), 12 U. S. C. § 1727 (a), to its present form.4

Section 404 (a) now requires FSLIC to establish two reserves, namely, a Primary Reserve “which shall be the general reserve,” and a Secondary Reserve. The requirement for the annual premium of %2 of 1% is continued, but the level of the general reserve was lowered from 5% to 2% of the totál of accounts plus creditor obligations. Sections 404 (b)(1) and 404 (b)(2), 12 U. S. C. §§ 1727 (b)(1) .and 1727 (b)(2). The 1961 Act, moreover, added subsection (d) to. § 404. 12 U. S. C. § 1727 (d). This required that the insured institution pay FSLIC, with respect to any calendar year, an “additional premium in the nature of a prepayment with respect to future premiums of such institution under subsection (b) . . . .” This “additional premium” was, and *349still is, 2% of the net increase in the total of the institution’s insured accounts^ less any amount the institution is required, by 12 U. S. C, § 1426 (c), as,of the end of that year, to expend in purchasing stock.in the Federal Home Loan- Bank.5 The additional premium is to be. credited to the Secondary Reserve. ■ Section 404 (a), 12 U. S. C. § 1727 (a).

As noted, FSLIC’s statutorily prescribed Primary Reserve is its general reserve. It is credited annually with . the Corporation’s net income; this net thus represents retained earnings. The § 404 (b)(1) premium payments, that is, the %2 of 1% required of each insured institution, constitute a major item in FSLIC’s gross income. To the .extent these premium payments exceed che corporation’s expenses and insurance losses for the year, they flow as part of FSLIC’s net to the Primary Reserve. The insured institutions have no property interest in the funds constituting the Primary Reserve.

• The Secondary Reserve subsists separately and possesses different characteristics.. It, of course, receives the 2% “additional premium,” to the extent such is payable, required by § 404 (d) from each insured institution. FSLIC must also credit the Secondary Reserve annually with a “return” on the Secondary Reserve’s “outstanding balances ... at a rate equal to the average annual rate of return to the Corporation during the year ... on the investments held by the Corporation in obligations of, *350or guaranteed as to principal and interést by, the United States.” Sections 404 (a) and 404 (e), 12 U. S. C. §§ 1727 (a) and 1727 (e). In contrast with the Primary Reserve, the Secondary Reserve is “available . . . only for losses of the Corporation” and then “only to such extent as other accounts of the Corporation which are available therefor are insufficient for such losses.” Section 404 (e), 12 U. S. C. § 1727 (e).

Each insured institution has a pro rata share in the Secondary Reserve. Section 404 (e) states that this is not assignable or transferable except as FSLIC, by regulation or otherwise, provides “in cases of merger or consolidation, transfer of bulk assets . . . and similar transactions . . . .” An insured institution may obtain a cash refund of its pro rata share if its status as an insured is terminated, § 407, 12 U. S. C. § 1730, or if a receiver or other legal custodian is appointed for purposes of liquidation, or if the Corporation determines that the institution has gone into liquidation. Section 404 (f), 12 U. S. C. § 1727 (f).

Following any December 31 on which the aggregate of the Primary Reserve and the Secondary Reserve equals or exceeds 2% of the total of all insured accounts plus creditor'obligations of all the insured institutions (and the Primary Reserve alone does not equal or exceed such. 2%), the additional premiums required by § 404 (d) are suspended. Section 404 (g), 12 U. S. C. § 1727 (g).6 When this takes place, the pro rata share of each insured institution in the Secondary Reserve is used, to the extent available, to discharge the institution’s obligation to pay its regular, or basic, premium required for that year under § 404 (b)(1). Thereafter, if the aggregate of the two *351reserves decreases to less than l.%%, the obligation to pay- the additional premium under § 404 (d) resumes and the pro rata share in the Secondary Reserve is no longer used to pay the §404 (b)(1) regular premium. Whenever, following any December 31, the Primary Reserve alone equals or exceeds, such 2%, the Corporation shall pay in cash to each insured institution its pro rata share of the Secondary Reserve and shall not thereafter accept further § 404 (d) prepayments.7

PSLIC maintains a separate account for each insured institution’s share of the Secondary Reserve. It submits to the institution annually a statement disclosing that share and the interest credited to it.8 . Under regulations issued by the California Savings and Loan Commissioner and by the Federal Home Loan Bank Board, Lincoln reports its interest in FSLIC’s Secondary Reserve as an asset on its balance sheet and treats the interest earned on its pro rata share of the Secondary Reserve as income.9

*352FSLIC annually sends Lincoln an “Insurance Premium Notice” for the basic premium due. under § 404 (b)(1). It also sends' Lincoln annually a “Notice of Insurance Premium Prepayment” for the amount, if any, due under § 404 (d). For 1963 the former was $135,760.52 and the latter was $882,636.86. Each was paid by Lincoln.

On its. 1963 federal income tax return. Lincoln deducted both its § 404 (b)(1) payment and its § 404 (d) payment as ordinary and necessary business expenses under § 162 (a) of the Code. The Commissioner allowed the former, but disallowed the latter.

The Tax Court held that the § 404 (d) payment was a nondeductible capital expenditure and. was not an ordinary and necessary business expense, and that the payment was deductible only when used from the . Secondary Reserve to pay § 404 (b) (1) premiums or to meet actual losses of FSLIC. As noted above, the Ninth Circuit reversed by a divided panel.

II

To qualify as an allowable deduction under § 162 (a) of the 1954 Code, an item must (l) be “paid or incurred during the taxable year,” (2) be for “carrying on any trade or business,” (3) be an “expense,” (4) be a “necessary” expense, and (5) be an “ordinary” expense. This Court has considered these several requirements, or one or more of them, in a number of cases. See, for example, Welch v. Helvering, 290 U. S. 111 (1933); Helvering, v. Winmill, 305 U. S. 79 (1938); Deputy v. du Pont, 308 U. S. 488 (1940); Interstate Transit Lines v. Commissioner, 319 U. S. 590 (1943); Commissioner v, Heininger, 320 U, S. 467 (1943); Commissioner v. Tellier, 383 U. S. *353687 (1966); Woodward v. Commissioner, 397 U. S. 572 (1970); United States v. Hilton Hotels Corp., 397 U. S. 580 (1970).

In Welch Mr. Justice Cardozo emphasized the difference between the “ordinary” and the “necessary” and the need for satisfying both in order to achieve the deduction. It is in that case where his well-known, but elusive, suggestion for the answer appears:

“The standard set up by the statute is not a rule of law; it is.rather a way of life. Life in all its fullness must supply the answer to the riddle.” 290 U. S., at 115.

In d,u Pont Mr. Justice Douglas stressed, 308 U. S., at 493, 495-496, the accepted rule of the “popular or received import” of a statute’s words, and further emphasized that “[o]rdinary has the connotation of normal,' usual, or customary,” and that each case “turns on- its special facts.” In Tellier Mr. Justice Stewart also emphasized the' double requirement of “ordinary” and “necessary”' and said:.

“Our decision's-ha,ve consistently construed the term ‘necessary’ as imposing only the minimal requirement that the expense be ‘appropriate and helpful’ for ‘the development of the [taxpayer’s] business’ ..... The principal function of the term ‘ordinary’ in § 162 (a) is to. clarify the distinction, often difficult, between those expenses that are currently deductible and those that are in the nature of capital expenditures, which, if deductible at all, must be amortized over the useful life of the asset.” 383 U. S., at 689-690.

■ So much for generalities. Here clearly, as to its § 404 .(d) “additional premium” payment in 1963, Lincoln satisfied, three of the five listed requirements. The pay*354ment was made during the taxable year. It was made in carrying on a trade or business. And it was a “necessary” payment, for it was compelled by the provisions of the National Housing Act. - The Government so concedes. The focus, therefore, and our only concern here, is whether the payment was an expense and an ordinary one within the meaning of § 162 (a) of the Code.

Lincoln's argument essentially is that its § 404 (d) payment was really no different from its § 404 (b)(1) payment for both were premiums for insurance of its depositors’ accounts and creditor obligations; that all similarly situated insured savings and loan associations (there were 4,419 on December 31, 1963) paid the § 404 (d) premium; and that the possibility of a future benefit from the expenditure does not serve to make it capital in nature as distinguished from an expense.

We feel that the very recital of the facts and of the structure and operation of FSLIC’s reserves, in Part I of this opinion, itself provides an answer adverse to Lincoln’s argument.' It is .not enough, in order that an expenditure qualify as an income tax deduction, that it merely be one paid by all similarly insured associations, or that it serves to fortify FSLIC’s insurance purpose and operation. Further, the presence of an ensuing benefit that may have some future aspect is not controlling; many expenses concededly deductible have prospective effect beyond the taxable year.

What is important and controlling, we feel, is that the § 404 (d) payment serves to create or enhance for Lincoln what is essentially a separate and distinct additional asset and that, as an inevitable consequence, the payment is capital- in nature and not an expense, let alone an ordinary expense, deductible under § 162 (a) in the absence'of other factors not established here. 'We note the following:

*355Á. The § 404 (d) payment to FSLIC, when made, is subject to positive and rigid continuing controls. The payment must flow into the Secondary Reserve. That reserve is primarily available only for stated and circumscribed purposes, namely, the payment of losses and then only to the extent all other assets of FSLIC are insufficient to cover those losses. The Secondary Reserve thus has complete seniority with respect to demands upon FSLIC. It is the asset last called upon.

B. The insured institution has a distinct and recognized property interest in the Secondary Reserve. This is revealed by: (1) The recognition, in § 404(e), of transferability of the institution’s pro rata share therein. This transferability is limited and restricted, to be sure, but it exists for. approved situations of merger, consolidation, and the like. (2) The prospective refund, and in cash at that, of the institution’s pro rata share upon termination of its insured status, or upon receivership or liquidation, or when the Primary Reserve alone reaches the suspension level. (3) The use of the institution’s pro rata share to pay its basic premium under § 404 (b)(1) when the suspension level is reached by the aggregate of the Primary and Secondary Reserves. (4) FSLIC’s maintenance of a separate account for each insured institution’s share in the Secondary Reserve. (5) The statutorily required annual credit from FSLIC’s earnings to the institution’s share of the Secondary Reserve. The share thus is an income-producing entity and the income inures to the benefit of the insured institution.

C. Although compulsory accounting rules do not control tax consequences, Old Colony R. Co. v. Commissioner, 284 U. S. 552, 562 (1932), there is significance in the fact that all concerned here have, recognized the presence and the significance of this property interest *356in the Secondary Reserve. FSLIC submits annual statements to its insured institutions showing payments and credits to their respective shares. Lincoln, albeit by fed-, eral and state requirements, shows that interest as an asset on its balance sheet and the credit as income. And Lincoln’s parent corporation, First Lincoln Financial Corporation, although not subject to such regulation, has done the same in its financial statements.

D. The nature of the adjustments effected by the 1961 Act is of some import. Due primarily to the rapid growth of insured institutions in the years preceding the passage of that Act, the ratio of FSLIC’s reserves to potential liability had declined. S. Rep. No. -778, 87th Cong., 1st Sess., 2, 12; Hearing on II. R. 7108 and H. R. 7109 before Subcommittee No. 1 of the House Committee on Banking and Currency,'87th Cong., 1st Sess:, 10. By the Act Congress reduced the requirement for Federal Home Loan Bank stock and at the same time channeled' new funds to FSLIC’s Secondary Reserve. The § 404 (d) payment and the reduction in the FHLB stock purchase requirement were effectuated together. . Certainly the FHLB stock is an asset and its acquisition is capital in nature. The complementary § 404 (d) payment is directed to a fund. Each is a device designed .to achieve a particular and common result, namely, the providing of protection to the insured institution and to its depositors-by way, in the one case, of liquidity and availability of loan funds and, in the other, by way .of segregated amounts available to offset possible losses. Each is more permanent than temporary. Each • partakes more of the character of an asset than of an expense. And the two are made complementary by the very provisions of § 404 (d).

We do not regard as contrarily persuasive, or as imposing an expense characteristic on the § 404 (d) pay-*357merits, six features emphasized by Lincoln or by the Court of Appeals:

A. The possibility that Lincoln’s share of the Secondary Reserve would be consumed by FSLIC’s losses and thus would never be refunded to Lincoln. The Tax Court pointed out, 51 T. C., at 97, that this hazard exists with any routine investment in a bank or an insurance company and yet its presence does not make that investment an expense rather than a capital undertaking.

B. The general unlikelihood, as a practical matter, of Lincoln’s recovery of its pro rata share of the Secondary Reserve. It is suggested that liquidation will not take place because in this day corporate activity is assumed to be a continuing process and not limited in duration. It is further pointed out that termination of FSLIC insurance is a business impossibility for it would result in mass withdrawal of. depositors’ accounts and in institutional suicide. It may well be true that liquidation is unlikely and that termination of insurance would be an undesirable business. decision. The same may usually be said, however, of a manufacturing corporation’s investment in plant and equipment or in patents or in many other assets basic to its business and function.

C. The claimed identity of purpose of the § 404 (b) (1) and § 404 (d) payments, namely, the providing of insurance for depositors’ accounts. .The former,.however, is only annual in phase and operation. It provides in-, surance for the year. When the year passes, the insurance ceases. The latter, however, provides a fund available for losses not only in the current year, but in the future. It is a fund capable under certain circumstances of finding its way back to the coffers of the insured institutions. The ultimate purpose of the two payments may have much in common, but the route and the life of each differ from those of the other.

*358D. The compulsory character of the payment imposed both by the governing statute and the economic facts of. life: Lincoln concedes, however, “Compulsion, whether legal or economic, should have no bearing upon the question whether a payment.is an expense or a capital, expenditure.”10

E. The anhual accounting concept of the income tax. This factor is relevant when, the year of deduction is in issue. It has less consequence in the determination of whether an item is or is not an ordinary. expense. As to this, the mere maturing of liability is not enough.

F. The suggestion that the § 404 (d) payment is not included in. the list of nondedúctible capital expenditures specified by § 263 of the 1954 Code. It is clear from the very language of §§ 162 (a) and 263 that the two sections together are not all inclusive, and that § 263 does not provide a complete list of nondeductible expenditures. Iowa Southern Utilities Co. v. Commissioner, 333 F. 2d 382, 385 (CA8 1964), cert. denied, 379 U. S. 946; General Bancshares Corp. v. Commissioner, 326 F. 2d 712, 716 (CA8 1964), cert. denied, 379 U. S. 832. See Helvering v. Winmill, 305 U. S. 79 (1938); Woodward v. Commissioner, 397 U. S. 572 (1970); United States v. Hilton Hotels Corp., 397 U. S. 580 (1970).

Ill

Lincoln’s pro rata share of the Secondary Reserve, of course, is not without its tax aspects. If its share is used .to pay losses or if, when the suspension level is reached, •it. is devoted to the payment of Lincoln’s § 404 (b)(1). premium, a deduction at that time for the amount so used would appear to be in order. Indeed, the Internal Revenue Service has so ruled. Rev. Rul. 66-49, 1966-1 Cum. Bull, 36, 37. Cf. Treas. Reg, on Income Tax § 1.162-13.

*359We emphasize that just as compulsory accounting is not .controlling taxwise, Old Colony R. Co. v. Commissioner, supra, so the statutory labels of “prepayment” and “additional premium” contained in § 404 (d) are not controlling. Burnett v. Commissioner, 356 F. 2d 755, 758 (CA5 1966), cert. denied, 385 U. S. 832. We also emphasize that the fact that a payment is imposed compulsorily upon a taxpayer does not in and of itself make that payment an ordinary and necessary expense within the meaning of § 162 (a) of the 1954 Code.

We therefore conclude that Lincoln’s § 404 (d) payment made in 1963 is not deductible under § 162 (a). See Wichita State Bank & Trust Co. v. Commissioner, 69 F. 2d 595, 596 (CA5 1934), cert. denied, 293 U. S. 562.

The judgment of the Court of Appeals is reversed.

It is so ordered.

dissenting.

Respondent is a state-chartered savings and loan institution, whose deposits are insured by the Federal Savings and Loan Insurance Corporation (FSLIC)-. To obtain this coverage, respondent must pay two premiums. Under § 404 (b) of the National Housing Act, it pays an annual premium of %2 of one percent of the total amount of its savings accounts and creditor obligations. Pursuant to § 404 (d), it must also pay an additional premium equal to two percent of any net increase in the total amount of its insured, accounts.1 The § 404 (b) -premium is considered gross income of FSLIC, approximately 95% of which is transferred to its Primary Reserve to cover losses. These premiums must be paid by insured institutions until the Primary Reserve equals two percent of *360the total insured sayings accounts and creditor obligations of all insured institutions. Thereafter; insured institutions need pay no -premiums unless and until the Primary Reserve drops below two percent. The § 404 (d) premium ,is not considered gross income of FSLIC but is transferred tó a Secondary Reserve, to be used to cover losses only if other accounts prove insufficient, a possibility considered extremely remote. A separate accounting is kept for each insured institution, showing the § 404 (d) premiums paid. Under § 404 (g), at any time that thé. aggregate of the Primary and Secondary Reserves reaches-2% of all insured accounts and creditor obligations, no § 404 (d) payments .need be made, and funds from the Secondary Reserve may be used to make § 404 (b) premium payments, until the aggregate falls below 1%%. When the Primary Reserve reaches 2%, FSLIC is to pay each insured institution its pro rata share of the Secondary Reserve in cash. By .FSLIC’s projections, no § 404 (d) premium payments will be required in the years 1971 to 1975 and after 1979. No § 404 (b) premiums will be required after 1995, as the Primary Reserve will reach ■ 2%. The respondent argues that there will be no payments of pro rata shares at that time, as the calculations ;of FSLIC show that the Secondary Fund will be exhausted prior to 1995.2

On its federal tax return for 1963 respondent deducted both its § 404 (b) ánd § 404 (d) premium payments as ordinary and necessary business expenses. The Commissioner of Internal Revenue allowed the deduction of § 404 (b) premiums, but disallowed the latter, characterizing - these payments as nondeductible capital investments in *361FSLIC, to be deducted only when used to pay § 404 (b) premiums or when used to meet actual losses of FSLIC. The Tax Court affirmed this' ruling. The Court of Appeals for the Ninth Circuit reversed the Tax Court, finding the § 404 (d) premiums to be a reasonable and necessary business expense, deductible in' the year paid. I agree with the Court of Appeals' and dissent from the-decision here.

There is no claim that the § 404 (d) premiums are not necessary. The position’ of the United States is that these premiums are not “ordinary,” but “in the nature of capital expenditures, which, if deductible at all, must be amortized over the useful life of the asset.” Commissioner v. Tellier, 383 U. S. 687, 689-690 (1966). The Commissioner relies on the principle that a cost which results in the creation of an asset, having a useful life which extends substantially beyond the close of the taxable year is a capital outlay. From this he argues that the'determination of whether respondent’s § 404 (d) premiums are capital expenditures or deductible business expenses depends on whether the payments will, provide a benefit in future years.

Because the respondent will obtain a benefit in the future from these premiums, in the form of lower § 404 (b) premiums or by a full refund of its pro rata share on termination or liquidation, he argues, the Secondary Reserve is a capital asset. It is riot used for losses, and will never be used except in the event of a national catastrophe. These premiums are not recurring, and . will likely be paid only in 13 of the 34 years from 1962 to 1995. Accounting principles, the Commissioner claims, demand that these payments be deducted when they are used, either to pay § 404 (b) premiums or to pay losses. “Only in this manner will the costs of FSLIC .insurance be matched against the revenues generated because such insurance is maintained.”

*362The rule professed by the United States is, of course, sound. The error is in applying it to this case. Respondent has not established an asset for future benefit. It has merely paid the premiums necessary to obtain insurance. It is true that premiums paid in 1963 may result in a reduction in premiums in later years. But labeling this the creation of an asset proves too much, for it invalidates the deduction of § 404 (b) premiums as well.

The benefit to be obtained from the payment of § 404 (d) premiums, whether they be capital expenditures or deductible expenses, is not the reduction of future premiums but insurance coverage. The Government readily admits that the present level of § 404 (b) premiums is not needed to cover current foreseeable losses. Indeed, losses have never exceeded investment income. The high premium rate is for the purpose of establishing a Primary Reserve, to cover conceivably serious losses in the future. When the Primary Reserve reaches a level deemed sufficient, no premium payments will be required at all. If “the costs of FSLIC insurance [are to] be matched against the revenues generated because such insurance is maintained,” a major portion of the § 404 (b) premiums should also be capitalized, to be depreciated over some, appropriate term.

Nor is it controlling that the Secondary Reserve is a capital account insofar as FSLIC is concerned. As the Court of Appeals stated:

“We think the emphasis upon the treatment of the receipt by the payee, FSLIC, is mistaken and that in determining whether, an expense is an ordinary and necessary expense of doing business, the focus should be on the taxpayer and the taxpayer’s business, not on what the payee does with the money paid. This is not to say that rights retained by the taxpayer are to be ignored.” 422 F. 2d 90, 92.

*363A decision that § 404 (d) premiums are hot deductible, while § 404 (b) premiums are, must rest on the only distinction between the two, the rights retained by respondent in the Secondary Reserve. These are évidenced by the keeping of separate “accounts,” the payment of earnings to these accounts, and the possibility of a recovery of a pro rata share of the Reserve. But, as the Court of Appeals noted, respondent is a going concern, and the possibility of a return of its share on liquidation is not a proper consideration. As termination of insurance would surely lead to liquidation, this could not be considered either. The possibility that ■ some part of the Secondary Reserve might be returned to respondent when the' Primary Reserve reaches a sufficient level is, at best, remote. This contingent possibility of recovery does not render an otherwise deductible payment nondeductible. Alleghany Corp. v. Commissioner, 28 T. C. 298, 305; Electric Tachometer Corp. v. Commissioner, 37 T. C. 158, 161.

The réturns paid on a pro rata share of the Secondary Reserve are paid out of . earnings, that is, out of funds which would otherwise be transferred to the Primary Reserve. The payment does not increase the aggregate amount of the reserves. The returns paid are not available to the insured institution, and not taxable to it until paid for its benefit, according to the Internal Revenue- Service. At that point, the insured institution would declare the income and deduct .the amount as an expense. Therefore, absent the remote possibility that the insured institution might receive a pro rata share, it is immaterial whether returns are paid to the Secondary Reserve or only to the Primary Reserve. Also, the revenue ruling that the insured institution does not have even constructive possession of a pro rata share of the Secondary Reserve, for purposes of taxing returns *364on that, fund, is inconsistent with the position that the same pro rata share is. a capital asset of the institution.

On these facts, the Court of Appeals was correct in determining that the § 404 (d) premiums, paid for the purpose of obtaining insurance necessary for the success of respondent’s business,, were deductible, as an ordinary business expense.