Mr. Justice Powell
delivered the opinion of the Court.
Several indigents and organizations composed of indigents brought this suit against the Secretary of the Treasury and the Commissioner of Internal Revenue. They asserted that the Internal Revenue Service (IRS) violated the Internal Revenue Code of 1954 (Code) and the Administrative Procedure Act (APA) by issuing a Revenue Ruling allowing favorable tax treatment to a nonprofit hospital that offered only emergency-room services to indigents. We conclude that these plaintiffs lack standing to bring this suit.
I
The Code, in its original version and by subsequent amendment, accords advantageous treatment to several types of nonprofit corporations, including exemption of [29]*29their income from taxation and deductibility by benefactors of the amounts of their donations. Nonprofit hospitals have never received these benefits as a favored general category, but an individual nonprofit hospital has been able to claim them if it could qualify as a corporation “organized and operated exclusively for . . . charitable . . . purposes” within the meaning of § 501 (c) (3) of the Code, 26 U. S. C. § 501 (c)(3).1 As the Code does not define the term “charitable,” the status of each nonprofit hospital is determined on a case-by-case basis by the IRS.
In recognition of the need of nonprofit hospitals for some guidelines on qualification as “charitable” corporations, the IRS in 1956 issued Revenue Ruling 56-185.2 This Ruling established the position of the IRS to be “that the term 'charitable’ in its legal sense and as it is used in section 501 (c) (3) of the Code contemplates an implied public trust constituted for some public benefit .. . .” In addition, the Ruling set out four “general requirements” that a hospital had to meet, “among other [30]*30things,” to be considered a charitable organization by the IRS, Only one of those requirements is important here, and it reads as follows:
“It must be operated to the extent of its financial ability for those not able to pay for the services rendered and not exclusively for those who are able and expected to pay. It is normal for hospitals to charge those able to pay for services rendered in order to meet the operating expenses of the institution, without denying medical care or treatment to others unable to pay. The fact that its charity record is relatively low is not conclusive that a hospital is not operated for charitable purposes to the full extent of its financial ability. It may furnish services at reduced rates which are below cost, and thereby render charity in that manner. It may also set aside earnings which it uses for improvements and additions to hospital facilities. It must not, however, refuse to accept patients in need of hospital care who cannot pay for such services. Furthermore, if it operates with the expectation of full payment from all those to whom it renders services, it does not dispense charity merely because some of its patients fail to pay for the services rendered.”
Revenue Ruling 56-185 remained the announced policy with respect to a nonprofit hospital’s “charitable” status for 13 years, until the IRS issued Revenue Ruling 69-545 on November 3, 1969.3 This new Ruling described two unidentified hospitals, referred to simply as Hospital A and Hospital B, which differed significantly in both [31]*31corporate structure and operating policies.4 The description of Hospital A included the following paragraph:
“The hospital operates a full time emergency room and no one requiring emergency care is denied treatment. The hospital otherwise ordinarily limits admissions to those who can pay the cost of their hospitalization, either themselves, or through private health insurance, or with the aid of public programs such as Medicare. Patients who cannot meet the financial requirements for admission are ordinarily referred to another hospital in the community that does serve indigent patients.”
Despite Hospital A’s apparent failure to operate “to the extent of its financial ability for those not able to pay for the services rendered,” as required by Revenue Ruling 56-185, the IRS in this new Ruling held Hospital A exempt as a charitable corporation under §501 (c)(3).5 Noting that Revenue Ruling 56-185 had set out require[32]*32ments for serving indigents “more restrictive" than those applied to Hospital A, the IRS stated that “Revenue Ruling 56-185 is hereby modified to remove therefrom the requirements relating to caring for patients without charge or at rates below cost.”
II
Issuance of Revenue Ruling 69-545 led to the filing of this suit in July 1971 in the United States District Court for the District of Columbia, by a group of organizations and individuals. The plaintiff organizations described themselves as an unincorporated association 6 and several nonprofit corporations7 each of which included low-income persons among its members and represented the interests of all such persons in obtaining hospital care and services. The 12 individual plaintiffs8 described themselves as subsisting below, the poverty income levels established by the Federal Government and suffering from medical conditions requiring hospital services. The organizations sued on behalf of their members, and each individual sued on his own behalf and as representative of all other persons similarly situated.
Each of the individuals described an occasion on which he or a member of his family had been disadvantaged in seeking needed hospital services because of indigency. Most involved the refusal of a hospital to admit the person because of his inability to pay a deposit or an advance fee, even though in some instances the [33]*33person was enrolled in the Medicare program. At least one plaintiff was denied emergency-room treatment because of his inability to pay immediately. And another was treated in the emergency room but then billed and threatened with suit although his indigency had been known at the time of treatment.
According to the complaint, each of the hospitals involved in these incidents had been determined by the Secretary and the Commissioner to be a tax-exempt charitable corporation, and each received substantial private contributions. The Secretary and the Commissioner were the only defendants. The complaint alleged that by extending tax benefits to such hospitals despite their refusals fully to serve the indigent, the defendants were “encouraging” the hospitals to deny services to the individual plaintiffs and to the members and clients of the plaintiff organizations. Those persons were alleged to be suffering “injury in their opportunity and ability to receive hospital services in nonprofit hospitals which receive . . . benefits ... as ‘charitable’ organizations” under the Code. They also were alleged to be among the intended beneficiaries of the Code sections that grant favorable tax treatment to “charitable” organizations.
Plaintiffs made two principal claims.
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Mr. Justice Powell
delivered the opinion of the Court.
Several indigents and organizations composed of indigents brought this suit against the Secretary of the Treasury and the Commissioner of Internal Revenue. They asserted that the Internal Revenue Service (IRS) violated the Internal Revenue Code of 1954 (Code) and the Administrative Procedure Act (APA) by issuing a Revenue Ruling allowing favorable tax treatment to a nonprofit hospital that offered only emergency-room services to indigents. We conclude that these plaintiffs lack standing to bring this suit.
I
The Code, in its original version and by subsequent amendment, accords advantageous treatment to several types of nonprofit corporations, including exemption of [29]*29their income from taxation and deductibility by benefactors of the amounts of their donations. Nonprofit hospitals have never received these benefits as a favored general category, but an individual nonprofit hospital has been able to claim them if it could qualify as a corporation “organized and operated exclusively for . . . charitable . . . purposes” within the meaning of § 501 (c) (3) of the Code, 26 U. S. C. § 501 (c)(3).1 As the Code does not define the term “charitable,” the status of each nonprofit hospital is determined on a case-by-case basis by the IRS.
In recognition of the need of nonprofit hospitals for some guidelines on qualification as “charitable” corporations, the IRS in 1956 issued Revenue Ruling 56-185.2 This Ruling established the position of the IRS to be “that the term 'charitable’ in its legal sense and as it is used in section 501 (c) (3) of the Code contemplates an implied public trust constituted for some public benefit .. . .” In addition, the Ruling set out four “general requirements” that a hospital had to meet, “among other [30]*30things,” to be considered a charitable organization by the IRS, Only one of those requirements is important here, and it reads as follows:
“It must be operated to the extent of its financial ability for those not able to pay for the services rendered and not exclusively for those who are able and expected to pay. It is normal for hospitals to charge those able to pay for services rendered in order to meet the operating expenses of the institution, without denying medical care or treatment to others unable to pay. The fact that its charity record is relatively low is not conclusive that a hospital is not operated for charitable purposes to the full extent of its financial ability. It may furnish services at reduced rates which are below cost, and thereby render charity in that manner. It may also set aside earnings which it uses for improvements and additions to hospital facilities. It must not, however, refuse to accept patients in need of hospital care who cannot pay for such services. Furthermore, if it operates with the expectation of full payment from all those to whom it renders services, it does not dispense charity merely because some of its patients fail to pay for the services rendered.”
Revenue Ruling 56-185 remained the announced policy with respect to a nonprofit hospital’s “charitable” status for 13 years, until the IRS issued Revenue Ruling 69-545 on November 3, 1969.3 This new Ruling described two unidentified hospitals, referred to simply as Hospital A and Hospital B, which differed significantly in both [31]*31corporate structure and operating policies.4 The description of Hospital A included the following paragraph:
“The hospital operates a full time emergency room and no one requiring emergency care is denied treatment. The hospital otherwise ordinarily limits admissions to those who can pay the cost of their hospitalization, either themselves, or through private health insurance, or with the aid of public programs such as Medicare. Patients who cannot meet the financial requirements for admission are ordinarily referred to another hospital in the community that does serve indigent patients.”
Despite Hospital A’s apparent failure to operate “to the extent of its financial ability for those not able to pay for the services rendered,” as required by Revenue Ruling 56-185, the IRS in this new Ruling held Hospital A exempt as a charitable corporation under §501 (c)(3).5 Noting that Revenue Ruling 56-185 had set out require[32]*32ments for serving indigents “more restrictive" than those applied to Hospital A, the IRS stated that “Revenue Ruling 56-185 is hereby modified to remove therefrom the requirements relating to caring for patients without charge or at rates below cost.”
II
Issuance of Revenue Ruling 69-545 led to the filing of this suit in July 1971 in the United States District Court for the District of Columbia, by a group of organizations and individuals. The plaintiff organizations described themselves as an unincorporated association 6 and several nonprofit corporations7 each of which included low-income persons among its members and represented the interests of all such persons in obtaining hospital care and services. The 12 individual plaintiffs8 described themselves as subsisting below, the poverty income levels established by the Federal Government and suffering from medical conditions requiring hospital services. The organizations sued on behalf of their members, and each individual sued on his own behalf and as representative of all other persons similarly situated.
Each of the individuals described an occasion on which he or a member of his family had been disadvantaged in seeking needed hospital services because of indigency. Most involved the refusal of a hospital to admit the person because of his inability to pay a deposit or an advance fee, even though in some instances the [33]*33person was enrolled in the Medicare program. At least one plaintiff was denied emergency-room treatment because of his inability to pay immediately. And another was treated in the emergency room but then billed and threatened with suit although his indigency had been known at the time of treatment.
According to the complaint, each of the hospitals involved in these incidents had been determined by the Secretary and the Commissioner to be a tax-exempt charitable corporation, and each received substantial private contributions. The Secretary and the Commissioner were the only defendants. The complaint alleged that by extending tax benefits to such hospitals despite their refusals fully to serve the indigent, the defendants were “encouraging” the hospitals to deny services to the individual plaintiffs and to the members and clients of the plaintiff organizations. Those persons were alleged to be suffering “injury in their opportunity and ability to receive hospital services in nonprofit hospitals which receive . . . benefits ... as ‘charitable’ organizations” under the Code. They also were alleged to be among the intended beneficiaries of the Code sections that grant favorable tax treatment to “charitable” organizations.
Plaintiffs made two principal claims. The first was that in issuing Revenue Ruling 69-545 the defendants had violated the Code, and that in granting charitable-corporation treatment to nonprofit hospitals that refused fully to serve indigents the defendants continued the violation. Their theory was that the legislative history of the Code, regulations of the IRS, and judicial precedent had established the term “charitable” in the Code to mean “relief of the poor,” and that the challenged Ruling and current practice of the IRS departed from that interpretation. Plaintiffs’ second claim was that the issuance of Revenue Ruling 69-545 without a [34]*34public hearing and an opportunity for submission of views had violated the rulemaking procedures of the APA, 5 U. S. C. § 553. The theory of this claim was that the Ruling should be considered a “substantive" rule as opposed to the “interpretative” type of rule that is exempted from the requirements of § 553.9 Plaintiffs sought various forms of declaratory and injunctive relief.10
By a motion to dismiss, defendants challenged plaintiffs’ standing, suggested the non justiciability of the subject matter of the suit, and asserted that in any event the action was barred by the Anti-Injunction Act,11 the tax limitation in the Declaratory Judgment Act,12 and the [35]*35doctrine of sovereign immunity. The District Court denied this motion without opinion. On subsequent cross-motions for summary judgment the court considered but rejected each of defendants’ arguments against its reaching the merits. The court then held that Revenue Ruling 69-545 was “improperly promulgated” and “without effect” insofar as it permitted nonprofit hospitals to qualify for tax treatment as charities without their offering “special financial consideration to persons unable to pay.” 370 F. Supp. 325, 338 (1973).13
The Court of Appeals for the District of Columbia Circuit reversed. 165 U. S. App. D. C. 239, 506 F. 2d 1278 (1974). It agreed with the District Court’s rejection of defendants’ jurisdictional contentions, but held on the merits that Revenue Ruling 69-545 was founded upon a permissible definition of “charitable” and was not contrary to congressional intent in the Code. As to the plaintiffs’ APA claim, which the District Court had not reached, the Court of Appeals held that Revenue Ruling 69-545 was an “interpretative” ruling and thus exempt from the APA’s rulemaking requirements.
Plaintiffs sought a writ of certiorari in No. 74 — 1110 to review the Court of Appeals’ judgment on the merits. Defendants filed a cross-petition in No. 74-1124 seeking review of that court’s decision on the jurisdictional issues if plaintiffs’ petition should be granted. We granted both petitions and consolidated them. 421 [36]*36U. S. 975 (1975). Since we deal with defendants’ contentions in No. 74^1124 first, and find it unnecessary to reach the issues raised by plaintiffs in No. 74-1110, we shall refer to defendants below as petitioners and to plaintiffs below as respondents.
Ill
In this Court petitioners have argued that a policy of the IRS to tax or not to tax certain individuals or organizations, whether embodied in a Revenue Ruling or otherwise developed, cannot be challenged by third parties whose own tax liabilities are not affected. Their theory is that the entire history of this country’s revenue system, including but not limited to the evolution of the Code, manifests a consistent congressional intent to vest exclusive authority for the administration of the tax laws in the Secretary and his duly authorized delegates, subject to oversight by the appropriate committees of Congress itself. It is argued that allowing third-party suits questioning the tax treatment accorded other taxpayers would transfer determination of general revenue policy away from those to whom Congress has entrusted it and vest it in the federal courts.14
[37]*37In addition, petitioners analogize the discretion vested in the IRS with respect to administration of the tax laws to the discretion of a public prosecutor as to when and whom to prosecute. They thus invoke the settled doctrine that the exercise of prosecutorial discretion cannot be challenged by one who is himself neither prosecuted nor threatened with prosecution. See Linda R. S. v. Richard D., 410 U. S. 614, 619 (1973). Petitioners also renew their jurisdictional contentions that this action is barred by the Anti-Injunction Act, the Declaratory Judgment Act, and the doctrine of sovereign immunity.
We do not reach either the question of whether a third party ever may challenge IRS treatment of another, or the question of whether there is a statutory or an immunity bar to this suit. We conclude that the District Court should have granted petitioners’ motion to dismiss on the ground that respondents’ complaint failed to establish their standing to sue.15
IV
No principle is more fundamental to the judiciary’s proper role in our system of government than the constitutional limitation of federal-court jurisdiction to actual cases or controversies. See Flast v. Cohen, 392 U. S. 83, 95 (1968). The concept of standing is part of this limitation. Unlike other associated doctrines, for example, that which restrains federal courts from deciding [38]*38political questions, standing “focuses on the party seeking to get his complaint before a federal court and not on the issues he wishes to have adjudicated.” Id., at 99. As we reiterated last Term, the standing question in its Art. Ill aspect “is whether the plaintiff has ‘alleged such a personal stake in the outcome of the controversy’ as to warrant his invocation of federal-court jurisdiction and to justify exercise of the court’s remedial powers on his behalf.” Warth v. Seldin, 422 U. S. 490, 498-499 (1975) (emphasis in original). In sum, when a plaintiff’s standing is brought into issue the relevant inquiry is whether, assuming justiciability of the claim, the plaintiff has shown an injury to himself that is likely to be redressed by a favorable decision. Absent such a showing, exercise of its power by a federal court would be gratuitous and thus inconsistent with the Art. Ill limitation.16
Respondents brought this action under § 10 of the APA, 5 U. S. C. § 702, which gives a right to judicial review to any person “adversely affected or aggrieved by agency action within the meaning of a relevant statute.”17 In Data Processing Service v. Camp, 397 U. S. 150 (1969), this Court held the constitutional standing requirement under this section to be allegations which, if true, would establish that the plaintiff had been injured in fact by [39]*39the action he sought to have reviewed. Reduction of the threshold requirement to actual injury redressable by the court represented a substantial broadening of access to the federal courts over that previously thought to be the constitutional minimum under this statute.18 But, as this Court emphasized in Sierra Club v. Morton, 405 U. S. 727, 738 (1972), “broadening the categories of injury that may be alleged in support of standing is a different matter from abandoning the requirement that the party seeking review must himself have suffered an injury.” See also United States v. Richardson, 418 U. S. 166, 194 (1974) (Powell, J., concurring). The necessity that the plaintiff who seeks to invoke judicial power stand to profit in some personal interest remains an Art. Ill requirement. A federal court cannot ignore this requirement without overstepping its assigned role in our system of adjudicating only actual cases and controversies.19 It is according to this settled principle that the allegations of both the individual respondents and the respondent organizations must be tested for sufficiency.
A
We note at the outset that the five respondent organizations, which described themselves as dedicated to [40]*40promoting access of the poor to health services, could not establish their standing simply on the basis of that goal. Our decisions make clear that an organization’s abstract concern with a subject that could be affected by an adjudication does not substitute for the concrete injury required by Art. III. Sierra Club v. Morton, supra; see Warth v. Seldin, supra. Insofar as these organizations seek standing based on their special interest in the health problems of the poor their complaint must fail. Since they allege no injury to themselves as organizations, and indeed could not in the context of this suit, they can establish standing only as representatives of those of their members who have been injured in fact, and thus could have brought suit in their own right. Warth v. Seldin, supra, at 511. The standing question in this suit therefore turns upon whether any individual respondent has established an actual injury,20 or whether the respondent organizations have established actual injury to any of their indigent members.
B
The obvious interest of all respondents, to which they claim actual injury, is that of access to hospital services. In one sense, of course, they have suffered injury to that interest. The complaint alleges specific occasions on which each of the individual respondents sought but was denied hospital services solely due to his indigency,21 and [41]*41in at least some of the cases it is clear that the needed treatment was unavailable, as a practical matter, anywhere else. The complaint also alleges that members of the respondent organizations need hospital services but live in communities in which the private hospitals do not serve indigents. We thus assume, for purpose of analysis, that some members have been denied service. But injury at the hands of a hospital is insufficient by itself to establish a case or controversy in the context of this suit, for no hospital is a defendant. The only defendants are officials of the Department of the Treasury, and the only claims of illegal action respondents desire the courts to adjudicate are charged to those officials. “Although the law of standing has been greatly changed in [recent] years, we have steadfastly adhered to the requirement that, at least in the absence of a statute expressly conferring standing, federal plaintiffs must allege some threatened or actual injury resulting from the putatively illegal action before a federal court may assume jurisdiction.” Linda R. S. v. Richard D., 410 U. S., at 617.22 In other words, the “case or controversy” limitation of Art. Ill still requires that a federal court act only to redress injury that fairly can be traced to the challenged action of the defendant, and not injury [42]*42that results from the independent action of some third party not before the court.
The complaint here alleged only that petitioners, by the adoption of Revenue Ruling 69-545, had “encouraged” hospitals to deny services to indigents.23 The implicit corollary of this allegation is that a grant of respondents’ requested relief, resulting in a requirement that all hospitals serve indigents as a condition to favorable tax treatment, would “discourage” hospitals from denying their services to respondents. But it does not follow from the allegation and its corollary that the denial of access to hospital services in fact results from petitioners’ new Ruling, or that a court-ordered return by petitioners to their previous policy would result in these respondents’ receiving the hospital services they desire. It is purely speculative whether the denials of service [43]*43specified in the complaint fairly can be traced to petitioners’ “encouragement” or instead result from decisions made by the hospitals without regard to the tax implications.
It is equally speculative whether the desired exercise of the court’s remedial powers in this suit would result in the availability to respondents of such services. So far as the complaint sheds light, it is just as plausible that the hospitals to which respondents may apply for service would elect to forgo favorable tax treatment to avoid the undetermined financial drain of an increase in the level of uncompensated services. It is true that the individual respondents have alleged, upon information and belief, that the hospitals that denied them service receive substantial donations deductible by the donors. This allegation could support an inference that these hospitals, or some of them, are so financially dependent upon the favorable tax treatment afforded charitable organizations that they would admit respondents if a court required such admission as a condition to receipt of that treatment. But this inference is speculative at best.24 The Solicitor General states in his brief that, nationwide, private philanthropy accounts for only 4% of private hospital revenues. Respondents introduced in the District Court a statement to Congress by an official of a hospital association describing the importance to nonprofit hospitals of the favorable tax treatment they receive as charitable corporations. Such conflicting evidence supports the commonsense proposition that the dependence upon special tax benefits may vary from hospital to hospital. Thus, respondents’ allegation that [44]*44certain hospitals receive substantial charitable contributions, without more, does not establish the further proposition that those hospitals are dependent upon such contributions.
Prior decisions of this Court establish that unadorned speculation will not suffice to invoke the federal judicial power. In Linda R. S. v. Richard D., the mother of an illegitimate child averred that state-court interpretation of a criminal child support statute as applying only to fathers of legitimate children violated the Equal Protection Clause of the Fourteenth Amendment. She sought an injunction requiring the district attorney to enforce the statute against the father of her child. We held that the mother lacked standing, because she had “made no showing that her failure to secure support payments results from the nonenforcement, as to her child's father, of [the statute].” 410 U. S., at 618. The prospect that the requested prosecution in fact would result in the payment of child support — instead of jailing the father — was “only speculative.” Ibid. Similarly, last Term in Warth v. Seldin we held that low-income persons seeking the invalidation of a town's restrictive zoning ordinance lacked standing because they had failed to show that the alleged injury, inability to obtain adequate housing within their means, was fairly attributable to the challenged ordinance instead of to other factors. In language directly applicable to this litigation, we there noted that plaintiffs relied “on little more than the remote possibility, unsubstantiated by allegations of fact, that their situation might have been better had [defendants] acted otherwise, and might improve were the court to afford relief.” 422 U. S., at 507.
The principle of Linda R. S. and Warth controls this case. As stated in Warth, that principle is that indirectness of injury, while not necessarily fatal to standing, [45]*45“may make it substantially more difficult to meet the minimum requirement of Art. Ill: to establish that, in fact, the asserted injury was the consequence of the defendants’ actions, or that prospective relief will remove the harm.” 422 U. S., at 505. Respondents have failed to carry this burden. Speculative inferences are necessary to connect their injury to the challenged actions of petitioners.25 Moreover, the complaint suggests no substantial likelihood that victory in this suit would result [46]*46in respondents’ receiving the hospital treatment they desire. A federal court, properly cognizant of the Art. Ill limitation upon its jurisdiction, must require more than respondents have shown before proceeding to the merits.
Accordingly, the judgment of the Court of Appeals is vacated, and the cause is remanded to the District Court with instructions to dismiss the complaint.
It is so ordered.
Mr. Justice Stevens took no part in the consideration or decision of these cases.