Opinion
seeking a writ of prohibition, is one of several defendants in a class action currently pending in the Los Angeles County Superior Court. That court granted the motion of plaintiff (real party in interest) for an order compelling petitioner to answer certain interrogatories, concerning petitioner’s state sales tax returns. Petitioner contends that the information sought is privileged or otherwise immune from discovery. We agree, in part, and issue the writ as to one of the interrogatories.
Since the dispute arises from the interrelationship between the sales tax and trading stamps, and to give meaning to the setting from which the litigation arises, we review certain general principles affecting tax and stamp. The sales tax is imposed on the gross receipts of a retailer (Rev. & Tax. Code, § 6051), but the retailer shall collect reimbursement of the tax “from the consumer in so far as it can be done.” (Rev. & Tax.
*4
Code, § 6052.) Trading stamps given on taxable sales are considered a cash discount, and therefore are deductible from the retailer’s gross receipts.
(Eisenberg’s W. House
v.
St. Bd. Equal.,
Real party in interest brought this class action on behalf of himself and all others similarly situated against six defendant retailers, including petitioner Sav-On. Originally, the third amended complaint contained three causes of action. The first cause of action alleges that petitioner did not comply with any of the above three procedures, and that as a result petitioner charged excessive sales taxes to its customers, constituting the class which real party in interest claims to represent. The second cause of action alleges that petitioner did comply with the second procedure listed above, i.e., did give trading stamps for both the total retail sales and the amount of tax reimbursement charged, but that nonetheless such a procedure fails adequately to compensate customers for the tax charged, resulting again in a charge to,customers of excessive sales taxes. The third cause of action did not concern the three alternative procedures but alleged instead that petitioner took an illegal deduction in determining its gross receipts, and thus paid the state less tax than it should have. Counsel informs us that real party in interest has withdrawn this third cause of action, conceding that it fails to state a valid claim for relief.
During the course of pretrial discovery, real party in interest served upon petitioner three interrogatories which are the subject of petitioner’s attack. Interrogatory 40 asks what specific deductions or adjustments petitioner made in respect to sales tax returns for the years 1967-1971, inclusive, and also what law or regulation permits them. Interrogatory 41 *5 questions whether petitioner used a certain tax return form for the years in question. Interrogatory 42, directed at copies of the tax returns, inquires if petitioner has copies, where they are located, who the custodian is, and whether petitioner voluntarily will make them available to real party in interest. Petitioner objected to these questions on the grounds that the tax material was privileged, and that the laws upon which any deductions were based were not discoverable. The superior court granted real party in interest’s motion to compel answers to the above interrogatories and the instant petition followed.
Preliminarily, it may be observed that the prerogative writ is not the favored method of reviewing discovery orders. Ordinarily the aggrieved party must raise the issue on direct appeal from a final judgment.
(Pacific Tel. & Tel. Co.
v.
Superior Court, 2
Cal.3d 161, 169 [
In considering the merits, we review first petitioner’s claim that real party in interest cannot by discovery require disclosure of the specific statutes and administrative regulations supporting the tax deductions at issue herein. This is correct. Both the California Revenue and Taxation Code and the California Administrative Code are as readily available to real party in interest as to petitioner and no purpose of discovery is served by compelling the latter to perform legal research for the former.
(Alpine Mut. Water Co.
v.
Superior Court,
*6 Petitioner next argues that the information sought by interrogatory 40, relating to the deductions and adjustments taken by it in the years 1967-1971, is privileged, and therefore not subject to discovery. (Code Civ. Proc., §§ 2030, subd. (b) and 2016, subd. (b).) Petitioner primarily relies in this connection upon Revenue and Taxation Code section 7056, which states in pertinent part: “. . . it is unlawful for the board or any person having an administrative duty under this part to make known in any manner whatever the business affairs, operations, or any other information pertaining to any retailer .. . required to report to the board or pay a tax pursuant to this part, or the amount or source of income, profits, losses, expenditures, or any particular thereof, set forth or disclosed in any return, or to permit any return or copy thereof or any book containing any abstract or particulars thereof to be seen or examined by any person.” While this statute by its terms appears to be directed only toward administrative officers, and does not expressly establish a privilege of the nature claimed by petitioner, it does, however, manifest a clear legislative intent that disclosures made in tax returns shall not be indiscriminately exposed to public scrutiny.
In
Webb
v.
Standard Oil Co.,
*7
Finally, in
Webb,
we made it clear that attempts to avoid the application of the privilege by indirect means could not be tolerated. (
Petitioner further contends that a finding of privilege as to interrogatory 40 renders irrelevant interrogatories 41 and 42.
The test of relevancy in discovery proceedings is a broad one. As we have stated in
Pacific Tel.,
“[a]n appellate court cannot reverse a trial court’s grant of discovery under a ‘relevancy’ attack unless it concludes that the answers sought by a given line of questioning cannot as a reasonable possibility lead to the discovery of admissible evidence or be helpful in preparation for trial.” (
The foregoing reasoning is fortified by our recent expressions in
Roberts
v.
Superior Court, supra, 9
Cal.3d at pages 335-336 and
Pacific Tel. & Tel. Co.
v.
Superior Court, supra,
We indicated in those cases, as above noted, that prerogative writs are generally not appropriate procedures for the review of relevancy objections to discovery orders. Since the policy upon which Webb v. Standard Oil Co. rests (i.e., the encouragement of honest and accurate *8 reporting of tax data) would not be violated by compelling petitioner to answer interrogatories 41 and 42, and no valid objection appearing to these questions on relevancy grounds, the writ of prohibition is limited to interrogatory 40 alone.
It may be noted in conclusion that no attempt has been made herein to define the full ambit of the privilege considered above, nor are we called upon to determine whether under other circumstances discovery of tax returns and records would be permissible. O.ur decision is a narrow one, limited to the record before us. V
Let a writ of prohibition issue restraining respondent superior court from compelling petitioner to answer real party in interest’s interrogator 40.
Wright, C. J., McComb, J., Tobriner, J., Mosk, J., Sullivan, J., and Clark, J., concurred.
