PUBLIC LAWS-CH. 619-OCT. 21 , 1942 53Stat. 4(. by section 44 (a), if such taxpayer establishes, in accordance with U.S.C. (a). regulations prescribed by the Commissioner with the approval of the Secretary, that the average volume of credit extended to purchasers on the installment plan in the four taxable years preceding the first taxable year beginning after December 31, 1941, was more than 125 per centum of the volume of such credit extended to such purchasers in the taxable year, or the average outstanding installment accounts receivable at the end of each of the four taxable years preceding the first taxable year beginning after December 31, 1941, was more than 125 per centum of the amount of such accounts receivable at the end of the taxable year, or if the taxpayer was not in existence for four previous taxable years, the taxable years during which the taxpayer was in existence, in either case including only such years for which the income was computed under the method provided in section 44 (a), it may elect, in its return for the taxable year, for the purposes of the tax imposed by this subchapter, to compute, in accordance with regulations prescribed by the Commissioner with the approval of the Secretary, its income from installment sales on the basis of the taxable period for which such income is accrued, in lieu of the basis provided by section 44 (a). Except as hereinafter provided, such election shall be irrevocable when once made and shall apply also to all subsequent taxable years, and the income from installment sales for each taxable year before the first year with respect to which the election is made but beginning after December 31, 1939, shall be adjusted for the purposes of this subchapter to conform to such election. In making such adjustments, no amount shall be included in computing excess profits net income for any excess profits tax taxable year on account of installment sales made in taxable years beginning before January 1, 1940. If the taxpayer establishes, in accordance with regulations prescribed by the Commissioner with the approval of the Secretary, that in a taxable year subsequent to the year with respect to which an election has been made under the preceding provisions of this subsection it would not be eligible to elect such accrual method, the taxpayer may in accordance with such regulations elect in its return for such year to abandon such accrual method. Such election shall be irrevocable when once made and shall preclude any further elec- tions under this subsection. For the taxable year for which the latter election is made and subsequent taxable years, income shall 26US. . .1 4 4 (c). be computed in accordance with section 44 (c)." "(b) ELECTION ON LONG-TERM CONTRACTS.-In the case of any taxpayer computing income from contracts the performance of which requires more than 12 months, if it is abnormal for the taxpayer to derive income of such class, or, if the taxpayer normally derives income of such class but the amount of such income of such class includible in the gross income of the taxable year is in excess of 125 per centum of the average amount of the gross income of the same class for the four previous taxable years, or, if the taxpayer was not in existence for four previous taxable years, the taxable years during which the taxpayer was in existence, it may elect, in its return for such taxable year for the purposes of this subchapter, or in the case of a taxable year the return for which was filed prior to the date of the enactment of the Revenue Act of 1942, within 6 months after the date of the enactment of such Act, to compute, in accordance with regulations prescribed by the Commissioner with the approval of the Secretary, such income upon the percentage of completion method of accounting. Such election shall be made in accordance with such regulations and shall be irrevocable when once made and shall apply to all other contracts, past, present, or future, the per- formance of which required or requires more than 12 months. The [56 STAT.
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