This is an appeal from a decision for the commission by the Appellate Tax Board. The board denied partial abatement of so much of the 1959 business corporation excise (G. L. c. 63, § 32) assessed upon the appellant (Company) as was measured by net income. The board did not file an opinion explaining its decision. The record includes (a) a stipulation, (b) copies of the tax return and the application for abatement, and (c) the pleadings before the board.

Company is a Massachusetts corporation. It filed its 1959 excise return for its taxable year ended June 30,1959, and paid $7,992.71, the excise computed on the basis of the return. On April 17, 1962, the commissioner assessed the 1959 excise in the sum of $9,437.33, including interest of $193.86. It is not contended that there has been improper computation of that portion of Company’s 1959 excise based upon its “corporate excess.” See G. L. c. 63, § 32 (a) (1), as amended through St. 1957, c. 577, § 1. The applicable statutes are set out in the margin, with language here of special significance italicized.1

*511Company’s 1959 excise return showed the following items of gross income and expenses: —

Company in its return treated items 8 and 13 (b) as entering into the allocation process. The gain of $5,160.25 *512was from the sale of airplanes situated outside of Massachusetts and was not allocated to Massachusetts. The interest income was allocated entirely to Massachusetts.2 This produced total allocable gross income of $56,226.16 of which $51,105.91 was allocable to Massachusetts. Company accordingly allocated the $35,910.67 of its net income (gross income less deductions) by the formula shown in the margin.3 4This produced an excise income measure of $32,617.25. The commissioner made no allocation of net income whatsoever, but simply treated Company’s gross income from interest of $51,105.91 as being its net income allocated to Massachusetts. The theory on which the commissioner felt this action to be justified is not clear from the record, the commission’s brief, or the arguments.

The result is the extraordinary one that the commissioner has decided Company’s net income measure of its 1959 excise to be about $15,000 in excess of its total net income, thus constituting an allocation of gross income, and giving no effect whatsoever to the deductions allowable, and disregarding the legislative intention (see c. 63, § 30, par. 5, quoted, fn. 1) that gross income shall be diminished by deductions. The propriety of the deductions claimed by Company 'on its return does not seem to be questioned. The formula used by Company reflects reasonably and proportionately an application of these deductions to* the *513gross income allocated to Massachusetts in this relatively simple situation where Company had no gross income subject to formula allocation under § 38 (see fn. 1).

The precise question here presented has not been decided by this court in the forty-seven years since the first enactment of our present form of corporation excise (see fn. 7, infra). In State Tax Commn. v. John H. Breck, Inc. 336 Mass. 277, 279-285, however, in reviewing generally the relevant statutes, we said (pp. 283-284), “The tax . . . is ‘a single excise measured by the sum of a percentage on . . . corporate excess added to a percentage on . . . net income as those terms are defined in the act. ’ ” We also said (pp. 284^285), “The excise imposed by § 32 is not a tax upon or measured by gross receipts. So far as its net income measure is concerned, the tax under § 32 will be zero (a) unless a domestic corporation subject to § 32 has a net income, in the sense that its gross income exceeds the expenses (with minor exceptions) allowed as deductions under the Federal income tax law, and (b) unless some of that net income, if there is a net income, is allocable to Massachusetts under the apportionment formula found in §§ 37 and 38. The purpose of the formula 37 and 38) is, of course, to limit the net income measure of the excise to that reasonably attributable to activities within or closely associated with Massachusetts, so as fairly to reflect the annual benefit to the taxed corporation of its corporate privileges (including their exercise, if exercised) under Massachusetts law.”

Section 37 starts out by directing the commissioner to “determine” as provided in that section and § 38, “the part of the [corporate] net income . . . derived from business carried on” in Massachusetts. The section, however, in terms allocates only certain items of gross income, viz. (a) interest and dividends, which are assigned to Massachusetts; (b) gains realized from the sale of intangible property and from the sale of Massachusetts real estate and tangible personal property, also allocated to Massachusetts ; and (c) gains from the sale of real estate and tangibles situated outside of Massachusetts, which are not *514allocated to Massachusetts. No specific provision, of § 37 expressly provides for (a) allocation of allowable deductions or of losses, wherever realized, to these items thus specifically allocated or (b) use of them as offsetting items. Nevertheless, at least with respect to corporations having “black ink” amounts of specifically allocated gross income exceeding, in the aggregate, total net income as defined in § 30, par. 5 (see fn. 1), some such allocation or offsetting of deductions and losses, reasonable in the circumstances, must be implied, if § 37 is not to result in an excise measured by gross income rather than by allocation of net income. This is certainly true in situations like or comparable to those presented by this case and by Cabot Corp. v. State Tax Commn., post, 516. The practical difficulty thus arising under § 37 has been recognized in some degree by one text writer. See Stuetzer, Massachusetts Taxation of Corporations (6th ed.) 14, fns. 55, 56.5

In the recent report of the Special Subcommittee on State Taxation of Interstate Commerce, Committee on the Judiciary, House of Representatives, 88th Congress, 2d Session, House Rep. 1480, vol. 1, pp. 197-206, 210-237 (1964), it was said at p. 217, “The ultimate aim of all schemes for the division of income is the determination of how much net income is to be assigned to a particular State for tax purposes. Net income is, of course, gross income less allowable deductions. Consequently, in the process of dividing income for tax purposes, deductions as well as gross income must be divided and assigned to the various States in order to determine the amount of net income which is taxable by each.”6

Chapter 63 has not made any clear provision for such a division. Reading this excise statute as a whole, however, we find no adequately expressed intention in § 37 or else*515where to measure the excise under § 32 (a) (2) by items of gross income or by any amount in excess of net income as defined in § 30, par. 5. Nothing in § 37 7 authorizes more than steps in an allocation or apportionment of total net income. The interpretation of § 37 apparently here asserted by the commission would make the excise, so far as levied in respect of interest and dividends, essentially a classified property tax on that type of gross income (like G-. L. c. 62, § 1, as amended), rather than an excise measured by a portion of total net income reasonably allocable to Massachusetts. If such a classified tax had been the legislative intention, much more explicit language would have been appropriate, in view of the doctrine of strict construction of tax statutes. See State Tax Commn. v. Wheatland, 343 Mass. 650, 653; Boston Safe Deposit & Trust Co. v. State Tax Commn. 346 Mass. 100, 105-106. The commissioner’s action in assessing gross income in this case seems to us to have no statutory basis. We find in § 37 (a), even if read with § 38A,8 no justification, in the circumstances *516revealed by this record, for allocating to Massachusetts more than a proportionate part of net income, and certainly no basis for thus allocating a sum in excess of total corporate net income. See the Cabot Corp. case, below.

The board’s decision is reversed. Abatement of the additional excise is to be granted with interest. Company is to have its costs.

So ordered.