The defendants, constitut ing the State Board of Equalization, have appealed from a judgment under the terms of which they were permanently enjoined by the trial court from revoking or suspending plaintiff’s “Seller’s Permit.” The permit referred to had been issued to plaintiff under the provisions of the California Re *420 tail Sales Tax Act of 1933 (Stats. 1933, p. 2599; Deering’s Gen. Laws, 1937, Act 8493). Under the provisions of that act there was imposed a tax at the rate of 2% per cent of the gross receipts of all “retailers” from the sale of tangible personal property sold at retail from August 1, 1933, to and including June 30, 1935. In its complaint plaintiff alleged, and in their answer defendants admitted, that in May, 1940, the State Board of Equalization notified plaintiff to appear before the board to show cause why its permit should not be revoked for failure to pay certain sums claimed by the board to be due and owing by plaintiff as an additional or reassessed tax imposed under the provisions of the act. Defendants also admitted the allegation of plaintiff that at the hearing which occurred pursuant to the notice given they notified plaintiff that in the event plaintiff did not pay the amount of such additional or reassessed tax the board intended to revoke plaintiff’s permit.
Plaintiff’s principal contention is that it had paid all that it owed to the state and that therefore the threatened action of defendants was illegal. The basic question involved on this appeal which is argued most fully by the parties is whether, or not plaintiff had paid all that it could lawfully be called upon to pay, or whether it owed the additional sum of $6,572.29 demanded by defendants.
But we are met on the threshold of a consideration of this question by the contention of appellants that, conceding that the claim of the Board of Equalization was untenable and that the amount demanded of respondent was not legally owing, plaintiff had an adequate remedy at law and therefore was not entitled to injunctive relief. This claim is based on the provisions of section 31 of the act which, say appellants, afforded respondent such a remedy. That section provides in part as follows:
“Sec. 31. No injunction or writ of mandate or other legal or equitable process shall issue in any suit, action or proceeding in any court against this State or against any officer thereof to prevent or enjoin the collection under this act of any tax sought to be collected, and no suit or proceeding shall be maintained in any court for the recovery of any amount alleged to have been erroneously or illegally assessed or collected unless a claim for refund or credit has been duly filed as provided in section 23 hereof.
“Within 90 days after the mailing of the notice of the *421 board’s action upon such claim, the claimant may bring an action against the board on the grounds set forth in such claim in a court of competent jurisdiction in the County of Sacramento for the recovery of the whole or any part of the amount with respect to which such claim has been disallowed. ...”
As the Supreme Court of this state pointed out at an early date, it does not necessarily follow that a property owner is entitled to injunctive relief merely because a tax demanded of him is illegal.
(Savings and Loan Society
v.
Austin,
Respondent concedes that if it has an adequate remedy at law it is not entitled to injunctive relief but contends that such is not the case. However, it also advances certain preliminary arguments to avoid the effect of section 31 of the act to which we shall first address ourselves. Respondent first contends that appellants assume the very point at issue when they argue that respondent has an adequate remedy by paying the “tax” and suing for a refund under section 31. The basis for this argument is that section 31, by its terms, applies to a tax, and that since appellants never had authority or jurisdiction to make the assessment involved herein the sum sought to be exacted of it would not constitute a tax and that therefore the section has no application.
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In onr opinion the argument of respondent is untenable. If it were sound it would apply with equal force to cases involving attempts to collect taxes imposed under unconstitutional statutes. But the law is settled that even though a taxing statute is unconstitutional and the alleged tax is therefore void, the property owner is not entitled to injunctive relief if he has an adequate remedy at law. Thus in the case of
Shelton
v.
Platt,
The next argument advanced by respondent to avoid the effect of section 31 is that the decree of the lower court did not restrain the collection of the tax in question but merely prevented the cancellation of respondent’s permit to do business. In support of this contention respondent cites
Hughson Con. Milk Co.
v.
State Board,
23 Cal. App. (2d) 281 [
In support of its position that section 31 of the Sales Tax Act does not furnish an adequate remedy at law, respondent cites the opinion of the Federal District Court in the case of
Printers & Publishers Corporation, Ltd.
v.
Corbett,
The decision of the court in the case last cited was followed in a three-judge District Court case decided in Iowa and involving a similar state of facts.
(Sears, Roebuck & Co.
v.
Roddewig,
The next contention of respondent is that the doctrine invoked by appellants is not applicable because irreparable injury would have been suffered by it by the forfeiture of its permit to do business in the absence of injunctive relief. We fail to find a sufficient showing of such irreparable injury. As appellants point out, since the amendment of the Sales Tax Act in 1935, exempting the gross receipts from the sale of food products from taxation, the taxable sales of respondent involved in this litigation amounted to less than three-tenths of one per cent of respondent’s total business. The taxable sales referred to consisted of such items as flour sacks and barrels which, to use appellants’ phrase, were in essence the residue of respondent’s business of producing and selling bakery products. It is those sales alone that would be affected by the suspension or revocation of respondent’s permit to do business.
In attempted justification of the absence of any substantial evidence on this issue of irreparable injury respondent claims that it was unnecessary for it to introduce evidence on the subject because of the admissions in the answer of appellants and because of the recitals in the agreed stipulation of facts introduced by the parties. In our opinion there is no basis for this claim. It is true that the complaint of respondent made some far reaching although very general allegations of irreparable injury which, however, were denied by appellants. But the proof failed to measure up in any
*425
substantial degree to the allegations so made. We have not overlooked the fact that the president of the respondent company testified that the sales in question constituted a "necessary” and an "essential” part of respondent’s business. No data, documentary or otherwise, was supplied by him or by respondent in support of the naked assertion so made. No further testimony on this subject of irreparable injury was offered by respondent. Clear proof of irreparable injury is required to justify the interference by a court with the taxing power of a branch of the state government. As the Supreme Court of this state has held, with respect to injunctions generally, quoting the language of a federal court, "To issue an injunction is the exercise of a delicate power, requiring great caution and sound discretion, and rarely, if ever, should be exercised in a doubtful case. ‘The right must be clear, the injury impending and threatened, so as to be averted only by the protecting preventive process of injunction.’ ”
(Willis
v.
Lauridson,
A more conclusive answer to the contention of respondent that it was entitled to equitable relief by reason of the fact that otherwise it would have sustained irreparable injury, than the insufficiency of the evidence adduced is that by the very nature of the remedy extended to it, it could have sustained no such injury. The general rule is that damage is not irreparable when it can be adequately compensated in damages. (See 32 C. J., p. 53, and eases there cited.) Obviously respondent, if required to pay the tax in question, would have been adequately compensated by the recovery of the amount of the tax with interest from the date of its pay-
*426
meat as authorized by section 31 of the Sales Tax Act. As held in
Dunker
v.
Field & Tule Club,
Respondent also suggests the point that appellants by their threatened action are seeking to deprive respondent of a property right or privilege without due process of law. We consider the point to be untenable. (See
Sears, Roebuck & Co.
v.
Roddewig,
In view of our conclusion that plaintiff was not entitled to injunctive relief since it had an adequate remedy at law, we need not consider the further contention of appellants that subdivision 4 of section 526 of the Code of Civil Pro *427 cedure deprived the lower court of any power it might otherwise have had to issue an injunction.
The judgment is reversed.
Nourse, P. J., and Spence, J., concurred.
Respondent’s petition for a hearing by the Supreme Court was denied September 10, 1942. Carter, J., voted for a hearing.
