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(a) Congress has not categorized tax fraud investigation into civil and criminal components but has created a tax enforcement system in which criminal and civil elements are inherently intertwined, and any limitation on the good-faith use of an IRS summons must reflect this statutory premise. Pp. 9-13.

(b) To enforce a summons under Section 7602, the primary requirement is that it be issued before the IRS recommends to the Department of Justice the initiation of a criminal prosecution relating to the subject matter of the summons. This is a prophylactic rule designed to protect the standards of criminal litigation discovery and the role of the grand jury as a principal tool of criminal accusation. Pp. 13-14.

(c) Enforcement of a summons is also conditioned upon the good-faith use of the summons authority by the IRS, which must not abandon its institutional responsibility to determine and to collect taxes and civil fraud penalties. That a single special agent intends only to gather evidence for a criminal investigation is not dispositive of the good faith of the IRS as an institution. Those resisting enforcement of a summons must disprove the actual existence of a valid civil tax determination or collection purpose by the IRS. Pp. 15-19.

(d) On the record here respondents have not shown sufficient justification to preclude enforcement of the summonses in question, absent any recommendation to the Justice Department for criminal prosecution and absent any showing that the special agent already possessed all of the evidence sought in the summonses or that the IRS in an institutional sense had abandoned pursuit of the taxpayer's civil tax liability. Pp. 19-20.

554 F. 2d 302, reversed with directions to remand.

Blackmun, J., delivered the opinion of the Court, in which Brennan, White, Marshall, and Powell, JJ., joined. Stewart, J., filed a dissenting opinion, in which Burger, C. J., and Rehnquist and Stevens, JJ., joined.

Mr. Justice Blackmun delivered the opinion of the Court. This case is a supplement to our decision in Donaldson v. United States 400 U. S. 517 (1971). It presents the issue whether the District Court correctly refused to enforce Internal Revenue Service summonses when it specifically found that the special agent who issued them "was conducting his investigation solely for the purpose of unearthing evidence of criminal conduct." 76-1 USTC 84,072, 84,073, 37 A. F. T. R. 2d 76-1239, 76-1240 (ND Ill. 1976).

I. In May 1975, John F. Olivero, a special agent with the Intelligence Division of the Chicago District of the Internal Revenue Service (hereinafter IRS or the Service), received an assignment to investigate the tax liability of John Gattuso for his taxable years 1970-1972. App. 26-27, 33. Olivero testified that he had requested the assignment because of information he had received from a confidential informant and from an unrelated investigation. Id., at 35. The case was not referred to the IRS from another law enforcement agency, but the nature of the assignment, Olivero testified, was "[t]o investigate the possibility of any criminal violations of the Internal Revenue Code." Id., at 33. Olivero pursued the case on his own, without the assistance of a revenue agent./1/ He received information about Gattuso from the Federal Bureau of Investigation as a result of the previous investigation. Id., at 36. He solicited and received additional data from the United States Attorney for the Northern District of Illinois, the Secret Service, the Department of Housing and Urban Development, the IRS Collection Division, and Cosmopolitan National Bank of Chicago. Id., at 37-40.

Mr. Gattuso's tax returns for the years in question disclosed rental income from real estate. That property was held in Illinois land trusts/2/ by respondent LaSalle National Bank, as trustee, a fact revealed by land trust files collected by the IRS from banks. Id., at 27, 45. In order to determine the accuracy of Gattuso's income reports, Olivero proceeded to issue two summonses, under the authority of Section 7602 of the Internal Revenue Code of 1954, 26 U. S. C. Section 7602,/3/ to respondent bank. Each summons related to a separate trust and requested, among other things, that the bank as trustee appear before Olivero at a designated time and place and produce its "files relating to Trust No. 31544 [or No. 35396] including the Trust Agreement" for the period 1970 through 1972 and also "all deeds, options, correspondence, closing statements and seller statements, escrows, and tax bills pertaining to all property held in the trust at any time during" that period. App. 9-16. Respondent Joseph W. Lang, a vice president of the bank, appeared in response to the summonses but, on advice of counsel, refused to produce any of the material requested. Brief for Respondents 2.

The United States and Olivero, pursuant to Sections 7402(b) and 7604(a) of the Code, 26 U. S. C. Sections 7402(b) and 7604(a),/4/ then petitioned the United States District Court for the Northern District of Illinois for enforcement of the summonses. App. 5. This was on November 11, 1975. Olivero testified that when the petition was filed he had not determined whether criminal charges were justified and had not made any report or recommendation about the case to his superiors. Id., at 30. It was alleged in the petition and in an incorporated exhibit that the requested materials were necessary for the determination of the tax liability of Gattuso for the years in question and that the information contained in the documents was not in the possession of the petitioners. Id., at 7, 17-18. The District Court entered an order to show cause, id., at 19, and respondents answered through counsel, who also represented Gattuso. Id., at 20-22.

At the ensuing hearing and in a posthearing brief, respondents argued that Olivero's investigation was "purely criminal" in nature. Id., at 82. Gregory J. Perry, a lawyer specializing in federal taxation and employed by the same law firm that filed the answer, testified that in June 1975 Olivero told him that the Gattuso investigation "was strictly related to criminal violations of the Internal Revenue Code." Id., at 52. Respondents conceded that they bore the burden of proving that enforcement of the summons would abuse the court's process, but they contended that they did not have to show "that there is no civil purpose to the Summons." Id., at 87. Instead, they urged that their burden was to show that the summonses were not issued in good faith because "the investigation is solely for the purpose of gathering evidence for use in a criminal prosecution." Id., at 77.

The District Court agreed with respondents' contentions. Although at the hearing the court seemed to recognize "that in any Criminal investigation there's always a probability of civil tax liability," id., at 61, it focused its attention on the purpose of Special Agent Olivero:

     "I'll say now that I heard nothing in Agent Olivero's

In its written memorandum, the District Court noted that Donaldson permitted the use of an IRS summons issued in good faith and prior to a recommendation for criminal prosecution. Relying on dictum in Reisman v. Caplin 375 U. S. 440, 449 (1954), however, the court said that it was an improper use of the summons "to serve it solely for the purpose of obtaining evidence for use in a criminal prosecution." 76-1 USTC at 84,072, 37 A. F. T. R. 2d, at 76-1240. If, at the time of its issuance, the summons served this proscribed purpose, the court concluded, the absence of a formal criminal recommendation was irrelevant, the summons was not issued in good faith, and enforcement was precluded. The court then held:

     "It is apparent from the evidence that Special Agent John

     "[T]he use of an administrative summons solely for criminal

Because of the importance of the issue in the enforcement of the internal revenue laws, and because of conflict among the courts of appeals concerning the scope of IRS summons authority under Section 7602,/6/ we granted certiorari. - U. S. - (1977).

II. In Donaldson v. United States 400 U. S. 517 (1971), an IRS special agent issued summonses to a taxpayer's putative former employer and its accountant for the production of the employer's records of the taxpayer's employment and compensation. When the records were not forthcoming, the IRS petitioned for the enforcement of the summonses. The taxpayer intervened and eventually appealed the enforcement order. This Court addressed the taxpayer's contention that the summonses were unenforceable because they were issued in aid of an investigation that could have resulted in a criminal charge against the taxpayer. His argument there, see id., at 532, was based on the following dictum in Reisman v. Caplin 375 U. S. 440, 449 (1964):

     "[T]he witness may challenge the summons on any appropriate

Discerning the meaning of the brief Reisman dictum, however, did not resolve for the Court the question posed by Donaldson. The validity of the summonses depended ultimately on whether they were among those authorized by Congress./8/ Having reviewed the statutory scheme, 400 U. S., at 523-525, the Court concluded that Congress had authorized the use of summonses in investigating potentially criminal conduct. The statutory history, particularly the use of summonses under the Internal Revenue Code of 1939,/9/ supported this conclusion, as did consistent IRS practice and decisions concerning effective enforcement of other comparable federal statutes./10/ The Court saw no reason to force the Service to choose either to forego the use of congressionally authorized summonses or to abandon the option of recommending criminal prosections to the Department of Justice./11/

As long as the summonses were issued in good-faith pursuit of the congressionally authorized purposes, and prior to any recommendation to the Department for prosecution, they were enforceable. 400 U. S. at 536.

III The present case requires us to examine the limits of the good-faith use of an Internal Revenue summons issued under Section 7602. As the preceding discussion demonstrates, Donaldson does not control the facts now before us. There, the taxpayer had argued that the mere potentiality of criminal prosecution should have precluded enforcement of the summons. 400 U. S. at 532. Here, on the other hand, the District Court found that Special Agent Olivero was investigating Gattuso "solely for the purpose of unearthing evidence of criminal conduct." 76-1 U. S. T. C., at 84,073, 37 A. F. T. R. 2d, at 76-1240. The question then becomes whether this finding necessarily leads to the conclusion that the summonses were not issued in good-faith pursuit of the congressionally authorized purposes of Section 7602.

A

The Secretary of the Treasury and the Commissioner of Internal Revenue are charged with the responsibility of administering and enforcing the Internal Revenue Code. 26 U. S. C. Sections 7801 and 7802. Congress, by Section 7601(a), has required the Secretary to canvass revenue districts to "inquire after and concerning all persons therein who may be liable to pay any internal revenue tax." With regard to suspected fraud, these duties encompass enforcement of both civil and criminal statutes. The willful submission of a false or fraudulent tax return may subject a taxpayer not only to criminal penalties under Sections 7206 and 7207 of the Code, but, as well, to a civil penalty, under Section 6653(b), of 50% of the underpayment. And Section 6659(a) provides that the civil penalty shall be considered as part of the tax liability of the taxpayer. Hence, when Section 7602 permits the use of a summons "[f]or the purpose of ascertaining the correctness of any return, . . . determining the liability of any person for any internal revenue tax . . . , or collecting any such liability," it necessarily permits the use of the summons for examination of suspected tax fraud and for the calculation of the 50% civil penalty. In Donaldson, 400 U. S., at 535, we clearly noted that Section 7602 drew no distinction between the civil and the criminal aspects; that it "contains no restriction"; that the corresponding regulations were "positive"; and that there was no significance, "for civil as compared with criminal purposes, at the point of a special agent's appearance." The Court then upheld the use of summonses even though fraudulent conduct carried the potential of criminal liability. The Court repeated this emphasis in Couch v. United States 409 U. S. 322, 326 (1973):

     "It is now undisputed that a special agent is authorized,

The legislative history of the Code supports the conclusion that Congress intended to design a system with interrelated criminal and civil elements. Section 7602 derives, assertedly without change in meaning,/13/ from corresponding and similar provisions in Sections 3614, 3615, and 3654 of the 1939 Code. By Section 3614(a) the Commissioner received the summons authority "for the purpose of ascertaining the correctness of any return or for the purpose of making a return where none has been made." Section 3615(b)(3) authorized the issuance of a summons "[w]henever any person who is required to deliver a monthly or other return of objects subject to tax delivers any return which, in the opinion of the collector, is erroneous, false, or fraudulent, or contains any undervaluation or understatement." Section 3654(a) stated the powers and duties of the collector:

     "Every collector within his collection district shall see

In short, Congress has not categorized tax fraud investigations into civil and criminal components. Any limitation on the good faith use of an Internal Revenue summons must reflect this statutory premise.

B

The preceding discussion suggests why the primary limitation on the use of a summons occurs upon the recommendation of criminal prosecution to the Department of Justice. Only at that point do the criminal and civil aspects of a tax fraud case begin to diverge. See United States v. Hodge & Zweig 548 F. 2d 1347, 1351 (CA 9 1977); United States v. Billingsley 469 F. 2d 1208, 1210 (CA 10 1972). We recognize, of course, that even upon recommendation to the Justice Department, the civil and criminal elements do not separate completely. The Government does not sacrifice its interest in unpaid taxes just because a criminal prosecution begins. Logically, then, the IRS could use its summons authority under Section 7602 to uncover information about the tax liability created by a fraud regardless of the status of the criminal case. But the rule forbidding such is a prophylactic intended to safeguard the following policy interests.

A referral to the Justice Department permits criminal litigation to proceed. The IRS cannot try its own prosecutions. Such authority is reserved to the Department of Justice and, more particularly, to the United States attorneys. 28 U. S. C. Section 547(1). Nothing in Section 7602 or its legislative history suggests that Congress intended the summons authority to broaden the Justice Department's right of criminal litigation discovery or to infringe on the role of the grand jury as a principal tool of criminal accusation. Accord, United States v. Morgan Guaranty Trust Co. - F. 2d - (CA 2 1978); United States v. Weingarden 473 F. 2d 454, 458-459 (CA 6 1973); United States v. O'Connor 118 F. Supp. 248, 250-251 (Mass. 1953); see Donaldson v. United States, 400 U. S., at 536; cf. Abel v. United States, 362 U. S. 217, 226 (1960). The likelihood that discovery would be broadened or the role of the grand jury infringed is substantial if post-referral use of the summons authority were permitted. For example, the IRS, upon referral, loses its ability to compromise both the criminal and the civil aspects of a fraud case. 26 U. S. C. Section 7122(a). After the referral, the authority to settle rests with the Department of Justice. Ibid. Interagency cooperation on the calculation of the civil liability is then to be expected and probably encourages efficient settlement of the dispute. But such cooperation, when combined with the inherently intertwined nature of the criminal and civil elements of the case, suggests that it is unrealistic to attempt to build a partial information barrier between the two branches of the Executive. Effective use of information to determine civil liability would inevitably result in criminal discovery. The prophylactic restraint on the use of the summons effectively safeguards the two policy interests while encouraging maximum interagency cooperation./15/

C

Prior to a recommendation for prosecution to the Department of Justice, the IRS must use its summons authority in good faith. Donaldson v. United States, 400 U. S., at 536; United States v. Powell 379 U. S. 48, 57-58 (1964). In Powell, the Court announced several elements of a good-faith exercise:

     [The Service] must show that the investigation will be

In this case, respondents submit that such a departure did indeed occur because Special Agent Olivero was interested only in gathering evidence for a criminal prosecution. We disagree. The institutional responsibility of the Service to calculate and to collect civil fraud penalties and fraudulently reported or unreported taxes is not necessarily overturned by a single agent who attempts to build a criminal case. The review process over and above his conclusions is multilayered and thorough. Apart from the control of his immediate supervisor, the agent's final recommendation is reviewed by the district chief of the Intelligence Division, 26 CFR Sections 601.107(b) and (c) (1977); Internal Revenue Manual, ch. 9600, Para. 9621.1, 9622.1, 9623 (1977); see Donaldson v. United States, 400 U. S., at 534. The Office of Regional Counsel also reviews the case before it is forwarded to the National Office of the Service or to the Justice Department. 26 CFR Section 601.107(c) (1977); Internal Revenue Service Organization and Functions Section 1116(3), 39 Fed. Reg. 11602 (1974); Internal Revenue Manual, ch. 9600, Para. 9624, 9631.2, 9631.4 (1977). If the Regional Counsel and the Assistant Regional Commissioner for Intelligence disagree about the disposition of a case, another complete review occurs at the national level centered in the Criminal Tax Division of the Office of General Counsel. Internal Revenue Service Organization and Functions Section 1113(11) 22, 39 Fed. Reg. 11599 (1974); Internal Revenue Manual, ch. 9600, Para. 9651 (1) (1977). Only after the officials of at least two layers of review have concurred in the conclusion of the special agent does the referral to the Department of Justice take place. At any of the various stages, the Service can abandon the criminal prosecution, can decide instead to assert a civil penalty, or can pursue both goals. While the special agent is an important actor in the process, his motivation is hardly dispositive.

It should also be noted that the layers of review provide the taxpayer with substantial protection against the hasty or overzealous judgment of the special agent. The taxpayer may obtain a conference with the district Intelligence Division officials upon request or whenever the chief of the Division determines that a conference would be in the best interests of the Government. 26 CFR Section 601.107(b)(2) (1977); Internal Revenue Manual, ch. 9300, Para. 9356.1 (1977). If prosecution has been recommended the chief notifies the taxpayer of the referral to the Regional Counsel. 26 CFR Section 601.107 (c) (1977); Internal Revenue Manual, ch. 9300, Para. 9355 (1977).

As in Donaldson, then, where we refused to draw the line between permissible civil and impermissible criminal purposes at the entrance of the special agent into the investigation, 400 U. S., at 536, we cannot draw it on the basis of the agent's personal intent. To do so would unnecessarily frustrate the enforcement of the tax laws by restricting the use of the summons according to the motivation of a single agent without regard to the enforcement policy of the Service as an institution. Furthermore, the inquiry into the criminal enforcement objectives of the agent would delay summons enforcement proceedings while parties clash over, and judges grapple with, the thought processes of each investigator./17/ See United States v. Morgan Guaranty Trust Co., supra. This obviously is undesirable and unrewarding. As a result, the question whether an investigation has solely criminal purposes must be answered only by an examination of the institutional posture of the IRS. Contrary to the assertion of respondents, this means that those opposing enforcement of a summons do bear the burden to disprove the actual existence of a valid civil tax determination or collection purpose by the Service. After all, the purpose of the good-faith inquiry is to determine whether the agency is honestly pursuing the goals of Section 7602 by issuing the summons.

Without doubt, this burden is a heavy one. Because criminal and civil fraud liabilities are coterminous, the Service rarely will be found to have acted in bad faith by pursuing the former. On the other hand, we cannot abandon this aspect of the good-faith inquiry altogether./18/ We shall not countenance delay in submitting a recommendation to the Justice Department when there is an institutional commitment to make the referral and the Service merely would like to gather additional evidence for the prosecution. Such a delay would be tantamount to the use of the summons authority after the recommendation and would permit the Government to expand its criminal discovery rights. Similarly, the good-faith standard will not permit the IRS to become an information-gathering agency for other departments, including the Department of Justice, regardless of the status of criminal cases./19/

D

In summary, then, several requirements emerge for the enforcement of an IRS summons./20/ First, the summons must be issued before the Service recommends to the Department of Justice that a criminal prosecution, which reasonably would relate to the subject matter of the summons, be undertaken. Second, the Service at all times must use the summons authority in good-faith pursuit of the congressionally authorized purposes of Section 7602. This second prerequisite requires the Service to meet the Powell standards of good faith. It also requires that the Service not abandon in an institutional sense, as explained in Parts III-A and III-C above, the pursuit of civil tax determination or collection.

IV. On the record before us, respondents have not demonstrated sufficient justification to preclude enforcement of the IRS summons. No recommendation to the Justice Department for criminal prosecution has been made. Of the Powell criteria, respondents challenge only one aspect of the Service's showing: they suggest that Olivero already may possess the evidence requested in the summons. Brief for Respondents 16-19. Although the record shows that Olivero had uncovered the names and identities of the LaSalle National Bank land trusts, it does not show that the Service knows the value of the trusts or their income or the allocation of interests therein. Because production of the bank's complete records on the trusts reasonably could be expected to reveal part or all of this information, which would be material to the computation of Gattuso's tax liability, the Powell criteria do not preclude enforcement. Finally, the District Court refused enforcement because it found that Olivero's personal motivation was to gather evidence solely for a criminal prosecution. The court, however, failed to consider whether the Service in an institutional sense had abandoned its pursuit of Gattuso's civil tax liability./21/ The Court of Appeals did not require that inquiry. On the record presently developed, we cannot conclude that such an abandonment has occurred.

The judgment of the Court of Appeals is therefore reversed with instructions to that court to remand the case to the District Court for further proceedings consistent with this opinion.

The Court concedes that the task of establishing the "purpose" of an individual agent is "undesirable and unrewarding." Ante, at -. Yet the burden it imposes today-to discover the "institutional good faith" of the entire Internal Revenue Service-is, in my view, even less desirable and less rewarding. The elusiveness of "institutional good faith" as described by the Court can produce little but endless discovery proceedings and ultimate frustration of the fair administration of the Internal Revenue Code. In short, I fear that the Court's new criteria will prove wholly unworkable.

Earlier this year the Court of Appeals for the Second Circuit had occasion to deal with the issue now before us in the case of United States v. Morgan Guaranty Trust Co., 572 F. 2d 36. Judge Friendly's perceptive opinion for his court in that case read the Donaldson opinion correctly: This Court was there "laying down an objective test, 'prior to a recommendation for criminal prosecution,' that would avoid a need for determining the thought processes of special agents; and . . . the 'good faith' requirement of the holding related to such wholly different matters as those mentioned in" the case of United States v. Powell 379 U. S. 48./2/ "Such a view would . . . be consistent with the only rationale that has ever been offered for preventing an otherwise legitimate use of an Internal Revenue Service third party summons, namely that Congress could not have intended the statute to trench on the power of the grand jury or to broaden the Government's right to discovery in a criminal case. . . ." 572 F. 2d, at 41-42.

Instead of standing by the objective and comparatively bright-line test of Donaldson, as now clarified, the Court today further muddies the waters. It does not even attempt to identify the source of the requirements it now adds to enforcement proceedings under Sections 7402(b) and 7604(a) of the Code. These requirements are not suggested by anything in the statutes themselves, and nobody suggests that they derive from the Constitution. They are simply imposed by the Court from out of nowhere, and they seem to me unjustified, unworkable, and unwise.

I would reverse the judgment, not for further hearings in the District Court, but with instructions to order enforcement of the summons.

The Audit Division and the Intelligence Division have now been redesignated as the Examinations Division and the Criminal Enforcement Division, respectively. IRS News Release, Feb. 6, 1978.

² Respondents describe an Illinois land trust as follows:

"An Illinois land trust is a contract by which a trustee is vested with both legal and equitable title to real property and the interest of the beneficiary is considered personal property. Under this trust the beneficiary or any person designated in writing by the beneficiary has the exclusive power to direct or control the trustee in dealing with the title and the exclusive control of the management, operation, renting and selling of the trust property together with the exclusive right to the earnings, avails and proceeds of said property. Ill. Rev. Stat. ch. 29, Section 8.31 (1971)." Brief for Respondents 1-2, n. 1.

³ Section 7602 reads: "For the purpose of ascertaining the correctness of any return, making a return where none has been made, determining the liability of any person for any internal revenue tax or the liability at law or in equity of any transferee or fiduciary of any person in respect of any internal revenue tax, or collecting any such liability, the Secretary or his delegate is authorized-

"(1) To examine any books, papers, records, or other data which may be relevant or material to such inquiry;

"(2) To summon the person liable for tax or required to perform the act, or any officer or employee of such person, or any person having possession, custody, or care of books of account containing entries relating to the business of the person liable for tax or required to perform the act, or any other person the Secretary or his delegate may deem proper, to appear before the Secretary or his delegate at a time and place named in the summons and to produce such books, papers, records, or other data, and to give such testimony, under oath, as may be relevant or material to such inquiry; and

"(3) To take such testimony of the person concerned, under oath, as may be relevant or material to such inquiry."

⁴ Section 7402(b) states: "If any person is summoned under the internal revenue laws to appear, to testify, or to produce books, papers, or other data, the district court of the United States for the district in which such person resides or may be found shall have jurisdiction by appropriate process to compel such attendance, testimony, or production of books, papers, or other data."

Section 7604(a) reads:

"If any person is summoned under the internal revenue laws to appear, to testify, or to produce books, papers, records, or other data, the United States district court for the district in which such person resides or is found shall have jurisdiction by appropriate process to compel such attendance, testimony, or production of books, papers, records, or other data."

⁵ The District Court was aware of and recognized the Government's contention that the individual agent's motive in the investigation was not dispositive:

"THE COURT: . . . [U]nder your theory any criminal investigation would not really be one until they closed it because there was always a possibility of a civil liability.

The Court agreed to inspect the IRS investigative file in camera after it refused to permit respondents to inspect the file. Id., at 50-51, 61-62.

⁶ Compare United States v. Hodge & Zweig 548 F. 2d 137, 1350-1351 (CA9 1977); United States v. Zack 521 F. 2d 1366, 1368 (CA9 1975); United States v. McCarthy 514 F. 2d 368, 374-375 (CA3 1975); United States v. Weingarden 473 F. 2d 454, 460 (CA6 1973); United States v. Wall Corp., 154 U.

S. App. D. C. 309, 311, 475 F. 2d 893, 895 (1972); and United States v Billingsley 469 F. 2d 1208, 1210 (CA10 1972); with United States v. Morgan Guaranty Trust Co. - F. 2d -, - (CA2 1978); and United States v. Troupe, 438 F. 2d 117, 119 (CA8 1971), regarding the conflict about whether the recommendations for criminal prosecution is dispositive of the so-called criminal purpose issue.

Compare United States v. Hodge & Zweig, 548 F. 2d, at 1351; and United States v. Billingsley, 469 F. 2d, at 1210, with United States v.

Lafko 520 F. 2d 622, 625 (CA3 1975), regarding the conflict about whether the criminal recommendation from the IRS to the Department of Justice or the recommendation from the special agent to his superiors is important in the enforcement inquiry.

⁷ In Boren v. Tucker, 239 F. 2d, at 772-773, the Ninth Circuit distinguished United States v. O'Connor 118 F. Supp. 248 (Mass. 1953), which involved an investigation of a taxpayer already under indictment.

⁸ The Court had concluded earlier that the summoning of the employer's and the accountant's records for an investigation of the taxpayer did not violate the constitutional rights of any of them. 400 U. S., at 522.

⁹ See Sections 3614, 3615, 3616, and 3654 of the 1939 Code, 53 Stat. 438-440, 446.

¹⁰ See United States v. Kordel, 397 U. S. 1, 11 (1970) (Federal Food, Drug, and Cosmetic Act enforcement), citing Standard Sanitary Mfg.

Co. v. United States, 226 U. S. 20, 51-52 (1912) (Sherman Act enforcement).

¹¹ See Part II-B and n. 15, infra.

¹² The interrelated nature of the civil and criminal investigative functions is further demonstrated by the organization and functioning of the Internal Revenue Service. Pursuant to 26 CFR Section 601.107 (1977), each revenue district has an Intelligence Division, "whose mission is to encourage and achieve the highest possible degree of voluntary compliance with the internal revenue laws." This purpose is implemented by "the investigation of possible criminal violations of such laws and the recommendation (when warranted) of prosecution and/or assertion of the 50 percent ad valorem addition to the tax." Ibid. See generally Internal Revenue Service Organization and Functions Sections 1113.563, 1114.8, and 1118.6, 39 Fed. Reg. 11572, 11581, 11601, and 11607 (1974).

In its Manual for employees, the IRS instructs that the jurisdiction of the Intelligence Division includes all civil penalties except those related to the estimated income tax. Internal Revenue Manual, ch. 4500, Para. 4561 (1976). The Manual adds:

"Intelligence features are those activities of developing and presenting admissible evidence required to prove criminal violations and the ad valorem penalties for civil fraud, negligence and delinquency (except those concerning tax estimations) for all years involved in cases jointly investigated to completion." Id., Para. 4565.31(4) (1976).

The Manual also contains detailed instructions for coordination between special agents and revenue agents during investigations of tax fraud, E. g., id., Para. 4563.431 (1978), and Para. 4565.22, 4565.32, 4565.41-4565.44 (1976).

Statistics for the fiscal year 1976 show that the Intelligence Division has a substantially greater involvement with civil fraud than with criminal fraud. Of 8,797 full-scale tax fraud investigations in that year, only 2,037 resulted in recommendations for prosecution. The 6,760 cases not recommended involved approximately $11 million in deficiencies and penalties. See 1976 Annual Report of the Commissioner of Internal Revenue 33, 61, 152.

¹³ See H. R. Rep. No. 1337, 83d Cong., 2d Sess., A436 (1954); S. Rep. No. 1622, 83d Cong., 2d Sess., 617 (1954).

¹⁴ Internal Revenue officials received similar summons authority in revenue acts prior to the 1939 Code. See, e. g., Revenue Act of 1918, Section 1305, 40 Stat. 1142; Tariff Act of Oct. 3, 1913, Section II Para. I, 38 Stat. 178-179; Act of June 30, 1864, Section 14, 13 Stat. 226.

The interrelated nature of fraud investigations thus was apparent as early as 1864. Section 14 of the 1864 Act permitted the issuance of a summons to investigate a suspected fraudulent return. It also prescribed a 100% increase in valuation as a civil penalty for falsehood. Section 15 established the criminal penalties for such conduct. Four years later, when Congress created the position of district supervisor, that official received similar summons authority. Act of July 20, 1868, Section 49, 15 Stat. 144-145; see Cong. Globe, 40th Cong., 2d Sess., 3450 (1868). The federal courts enforced these summonses when they were issued in good faith and in compliance with instructions from the Commissioner. See In re Meador, 16 F. Cas. 1294, 1296 (ND Ga. 1869); Stanwood v. Green, 22 F. Cas. 1077, 1079 (ND Miss. 1870) ("it being understood that this right upon the part of the supervisor extends only to such books and papers as relate to their banking operations, and are connected with the internal revenue of the United States").

¹⁵ The Third Circuit has suggested that our reference in Donaldson to the recommendation for criminal prosecution ("We hold that under Section 7602 an internal revenue summons may be issued in aid of an investigation if it is issued in good faith and prior to a recommendation for criminal prosecution," 400 U. S., at 536) intended to draw a line at the recommendation to the Service's district office from the special agent, rather than at the recommendation from the Service to the Justice Department. United States v. Lafko 520 F. 2d 622, 625 (1975). This misread our intent.

Given the interrelated criminal/civil nature of tax fraud investigation whenever it remains within the jurisdiction of the Service, and given the utility of the summons to investigate civil tax liability, we decline to impose the prophylactic restraint on the summons authority any earlier than at the recommendation to the Department of Justice. We cannot deny that the potential for expanding the criminal discovery rights of the Justice Department or for usurping the role of the grand jury exists at the point of the recommendation by the special agent. But we think the possibilities for abuse of these policies are remote before the recommendation to Justice takes place and do not justify imposing an absolute ban on the use of the summons before that point. Earlier imposition of the ban, given the balance of policies and civil law enforcement interests, would unnecessarily hamstring the performance of the tax determination and collection functions by the Service.

¹⁶ See, e.g., United States v. Hodge & Zweig 548 F. 2d 1347, 1350, 1351 (CA 9 1977); United States v. Zack 521 F. 2d 1366, 1368 (CA 9 1975); United States v. Lafko 520 F. 2d 622, 625 (CA 3 1975); United States v. McCarthy 514 F. 2d 368, 374-375 (CA 3 1975); United States v. Theodore 479 F. 2d 749, 753 (CA 4) 1973); United States v. Weingarden 473 F. 2d 454, 459 (CA 6 1973); United States v. Wall Corp., 154 U. S. App. D. C. 309, 311 475 F. 2d 893, 895 (1972).

¹⁷ We recognize, of course, that examination of agent motive may be necessary to evaluate the good-faith factors of Powell, for example, to consider whether a summons was issued to harass a taxpayer.

¹⁸ The dissent would abandon this aspects of the good-faith inquiry. It would permit the IRS to use the summons authority solely for criminal investigation. It reaches this conclusion because it says the Code contains no limitation to prevent such use. Its argument reveals a fundamental misunderstanding about the authority of the IRS. The Service does not enjoy inherent authority to summon production of the private papers of citizens. It may exercise only that authority granted by Congress.

In Section 7602 Congress has bestowed upon the Service the authority to summon production for four purposes only: for "ascertaining the correctness of any return, making a return where none has been made, determining the liability of any person for any internal revenue tax . . . or collecting any such liability." Congress therefore intended the summons authority to be used to aid the determination and collection of taxes. These purposes do not include the goal of filing criminal charges against citizens.

Consequently, summons authority does not exist to aid criminal investigations solely. The error of the dissent is that it seeks a limit on the face of the statute when it should seek an affirmative grant of summons authority for purely criminal investigations. We have made that search and could uncover nothing in the Code or its legislative history to suggest that Congress intended to permit exclusively criminal use of summonses. As a result, the IRS employs its authority in good faith when it pursues the four purposes of Section 7602, which do not include aiding criminal investigations solely.

¹⁹ To the limited extent that the institutional good faith of the Service with regard to criminal purpose may be questioned before any recommendation to the Department of Justice, our position on this issue necessarily rejects the Government's argument that prerecommendation enforcement of summonses must meet only the Powell elements of good faith. We have concluded that the Government's contention fails to recognize the essence of the good-faith inquiry. The Powell elements were not intended as an exclusive statement about the meaning of good faith. They were examples of agency action not in good-faith pursuit of the congressionally authorized purposes of Section 7602. The dispositive question in each case, then, is whether the Service is pursuing the authorized purposes in good faith.

²⁰ These requirements are not intended to be exclusive. Future cases may well reveal the need to prevent other forms of agency abuse of congressional authority and judicial process.

²¹ Respondents argue that the District Court made a factual finding when it concluded that the summonses were issued solely to gather evidence for a criminal prosecution. They then submit that the District Court's decision may be overturned only if this Court holds this finding to be clearly erroneous. Several Courts of Appeals have discussed the factual and legal issues that lurk in summons enforcement proceedings. Compare United States v. Zack, 521 F. 2d, at 1367-1368; United States v. National State Bank 454 F. 2d 1249, 1252 (CA7 1972); Boren v. Tucker 239 F. 2d 767, 773 (CA2 1956), with United States v. Weingarden, 473 F. 2d, at 460. Whether the issue of the Service's good faith generally poses a factual question, or a legal and factual one, or a legal question, is not necessarily presented in the case now before the Court, and we do not reach it.

The lower courts employed an incorrect legal standard to measure good faith when they limited their consideration to the personal motivation of Special Agent Olivero. In this case, then, a legal error compels reversal.

² As Judge Friendly pointed out, this Court's Powell opinion simply declared that a court may not permit its process in enforcing a summons to be abused, and its examples of "abuse" were: "Such an abuse would take place if the summons had been issued for an improper purpose, such as to harass the taxpayer or to put pressure on him to settle a collateral dispute, or for any other purpose reflecting on the good faith of the particular investigation." 379 U. S., at 58.

"Nothing was said to indicate that an intention by the Commissioner to uncover criminal tax liability would reflect 'on the good faith' of the inquiry, and the rule of ejusdem generis would dictate the contrary." 572 F. 2d, at 40.