KING, Senior Judge:
^Petitioner District of Columbia Office of Tax and Revenue (“OTR”) petitions for review of three orders issued by the Office of Administrative Hearings (“OAH”) that grant summary judgment to respondents Exxon Mobil Oil Corp., Shell Oil Co., and Hess Corp. (collectively, the “oil companies”) and reverse OTR’s Notices of Proposed Assessment of Tax Deficiency against them. OTR contends that OAH’s grant of summary judgment to the oil companies is premised on the erroneous application of offensive
non-mutual collateral estoppel against OTR. In
United States v. Mendoza,
464 U.S. 154, 104 S.Ct. 568, 78 L.Ed.2d 379 (1984), the Supreme Court held that offensive non-mutual collateral estoppel does not, as a matter of law, apply against the federal government. Citing
Mendoza,
OTR contends that offensive non-mutual collateral estoppel should not, as a matter of law, ever apply to the District, government or its entities, such as OTR. Alternatively, OTR argues that OAH abused its discretion in applying offensive non-mutual collateral estoppel in the circumstances of these cases. For the reasons that follow, we conclude that OAH did abuse its discretion in applying offensive non-mutual 'collateral estoppel against OTR and thereby erred in granting the oil companies summary judgment. We therefore vacate OAH’s orders and remand for further proceedings.
I.
Between 2011 and 2012, OTR issued a Notice of Proposed Assessment of Tax De
ficiency for alleged underpayment of corporate franchise taxes for tax years 2007-2009 to each of the oil companies. Each oil company filed a petition in OAH protesting the proposed assessment it received. Their protests were based in part on their shared view that the methodology used by OTR to calculate their alleged tax deficiencies (the “Chainbridge methodology”) was contrary to applicable law. OTR and the oil companies agreed to a stay of the proceedings by OAH pending resolution of similar challenges by other companies to tax deficiency assessments issued by OTR that also utilized the Chainbridge methodology.
Thereafter, OAH lifted the stay at the oil companies’ request to allow them to file motions for summary judgment.
In their motions for summary judgment, the oil companies argued,
inter alia,
that OTR was collaterally estopped from defending the legality of the Chainbridge methodology by OAH’s ruling in the
Microsoft
case. See
supra
note 2;
see also Microsoft Corp., supra
note 2, No. 2010-OTR-12 at *18-*27. Thereafter, OAH specifically directed OTR to “file ... brief[s] addressing the issue of collateral estoppel” in each of the proceedings and scheduled oral argument to deal solely with that issue. OTR complied with OAH’s order, submitting motions addressing collateral estoppel in which it argued (1) that offensive non-mutual collateral es-toppel does not apply to the District government or its entities or, in the alternative, (2) that it would be unfair and an abuse of discretion to apply offensive non-mutual collateral estoppel in these cases, citing the fairness factors identified by this court in
Modiri v. 1342 Rest Grp., Inc.,
904 A.2d 391, 400 (D.C.2006).
Following oral argument on the oil companies’ motions, OAH issued nearly identical orders in all three cases granting the oil companies summary judgment and reversing the three Notices of Proposed Assessment of Tax Deficiency issued by OTR. The orders were premised on OAH’s conclusion that its ruling in the
Microsoft
case collaterally estopped OTR from defending the legality of its methodology for calculating the oil companies’ alleged tax deficiencies. OTR timely filed petitions for review in this court of OAH’s orders, which this court consolidated
sua sponte.
11-
In these cases, we must determine whether OAH properly applied offensive non-mutual collateral estoppel against OTR. At first glance, it appears that in making this determination, we are bound by our decision in
District of Columbia v. Gould,
852 A.2d 50 (D.C.2004), in which we directly addressed the applicability of offensive non-mutual collateral estoppel against the District and its entities, such
as OTR.
However, the oil companies argue that we are not bound by
Gould’s
discussion of this issue.
Therefore, before we can decide the ultimate question presented, we must address the antecedent question of whether we are bound by
Gould’s
discussion.
A.
Gould
involved a claim against the District brought by a class of former Metropolitan Police Department (MPD) officers who “retired on account of disability ... but [did not] complete! ] twenty years of active service.” 852 A.2d at 52. The officers sought payment of a 5% “ ‘base retention differential’ (BRD) pursuant to” the applicable statute and allegedly “in conformity with a compensation settlement negotiated between the MPD and the Fraternal Order of Police (FOP) and approved by the Council of the District of Columbia.”
Id.
at 52-53. The terms of that settlement provided, in relevant part, that only officers “who ha[ve] completed or completen twenty (20) years of service under the Police Service salary schedule shall receive [the 5% BRD].”
Id.
at 53 n. 2 (emphasis omitted). This plain language led us to observe that because “[a]ll of the members of the plaintiff class retired prior to completing the requisite twenty years[, t]he 5% BRD [in the settlement] has no application to the members of the plaintiff class.”
Id.
at 53.
In an effort to overcome this plain language, the officers relied on a prior decision of this court,
District of Columbia v. Tarlosky,
675 A.2d 77 (D.C.1996), and a decision of the Superior Court based on
Tarlosky, Abbott v. District of Columbia,
C.A. No. 95-5668 (D.C.Super.Ct. July 23, 1996), to argue that the District was “collaterally estopped from contesting the retirees’ claim of eligibility for the 5% BRD.”
Gould, supra,
852 A.2d at 55. We rejected the officers’ argument on two grounds.
Free access — add to your briefcase to read the full text and ask questions with AI
KING, Senior Judge:
^Petitioner District of Columbia Office of Tax and Revenue (“OTR”) petitions for review of three orders issued by the Office of Administrative Hearings (“OAH”) that grant summary judgment to respondents Exxon Mobil Oil Corp., Shell Oil Co., and Hess Corp. (collectively, the “oil companies”) and reverse OTR’s Notices of Proposed Assessment of Tax Deficiency against them. OTR contends that OAH’s grant of summary judgment to the oil companies is premised on the erroneous application of offensive
non-mutual collateral estoppel against OTR. In
United States v. Mendoza,
464 U.S. 154, 104 S.Ct. 568, 78 L.Ed.2d 379 (1984), the Supreme Court held that offensive non-mutual collateral estoppel does not, as a matter of law, apply against the federal government. Citing
Mendoza,
OTR contends that offensive non-mutual collateral estoppel should not, as a matter of law, ever apply to the District, government or its entities, such as OTR. Alternatively, OTR argues that OAH abused its discretion in applying offensive non-mutual collateral estoppel in the circumstances of these cases. For the reasons that follow, we conclude that OAH did abuse its discretion in applying offensive non-mutual 'collateral estoppel against OTR and thereby erred in granting the oil companies summary judgment. We therefore vacate OAH’s orders and remand for further proceedings.
I.
Between 2011 and 2012, OTR issued a Notice of Proposed Assessment of Tax De
ficiency for alleged underpayment of corporate franchise taxes for tax years 2007-2009 to each of the oil companies. Each oil company filed a petition in OAH protesting the proposed assessment it received. Their protests were based in part on their shared view that the methodology used by OTR to calculate their alleged tax deficiencies (the “Chainbridge methodology”) was contrary to applicable law. OTR and the oil companies agreed to a stay of the proceedings by OAH pending resolution of similar challenges by other companies to tax deficiency assessments issued by OTR that also utilized the Chainbridge methodology.
Thereafter, OAH lifted the stay at the oil companies’ request to allow them to file motions for summary judgment.
In their motions for summary judgment, the oil companies argued,
inter alia,
that OTR was collaterally estopped from defending the legality of the Chainbridge methodology by OAH’s ruling in the
Microsoft
case. See
supra
note 2;
see also Microsoft Corp., supra
note 2, No. 2010-OTR-12 at *18-*27. Thereafter, OAH specifically directed OTR to “file ... brief[s] addressing the issue of collateral estoppel” in each of the proceedings and scheduled oral argument to deal solely with that issue. OTR complied with OAH’s order, submitting motions addressing collateral estoppel in which it argued (1) that offensive non-mutual collateral es-toppel does not apply to the District government or its entities or, in the alternative, (2) that it would be unfair and an abuse of discretion to apply offensive non-mutual collateral estoppel in these cases, citing the fairness factors identified by this court in
Modiri v. 1342 Rest Grp., Inc.,
904 A.2d 391, 400 (D.C.2006).
Following oral argument on the oil companies’ motions, OAH issued nearly identical orders in all three cases granting the oil companies summary judgment and reversing the three Notices of Proposed Assessment of Tax Deficiency issued by OTR. The orders were premised on OAH’s conclusion that its ruling in the
Microsoft
case collaterally estopped OTR from defending the legality of its methodology for calculating the oil companies’ alleged tax deficiencies. OTR timely filed petitions for review in this court of OAH’s orders, which this court consolidated
sua sponte.
11-
In these cases, we must determine whether OAH properly applied offensive non-mutual collateral estoppel against OTR. At first glance, it appears that in making this determination, we are bound by our decision in
District of Columbia v. Gould,
852 A.2d 50 (D.C.2004), in which we directly addressed the applicability of offensive non-mutual collateral estoppel against the District and its entities, such
as OTR.
However, the oil companies argue that we are not bound by
Gould’s
discussion of this issue.
Therefore, before we can decide the ultimate question presented, we must address the antecedent question of whether we are bound by
Gould’s
discussion.
A.
Gould
involved a claim against the District brought by a class of former Metropolitan Police Department (MPD) officers who “retired on account of disability ... but [did not] complete! ] twenty years of active service.” 852 A.2d at 52. The officers sought payment of a 5% “ ‘base retention differential’ (BRD) pursuant to” the applicable statute and allegedly “in conformity with a compensation settlement negotiated between the MPD and the Fraternal Order of Police (FOP) and approved by the Council of the District of Columbia.”
Id.
at 52-53. The terms of that settlement provided, in relevant part, that only officers “who ha[ve] completed or completen twenty (20) years of service under the Police Service salary schedule shall receive [the 5% BRD].”
Id.
at 53 n. 2 (emphasis omitted). This plain language led us to observe that because “[a]ll of the members of the plaintiff class retired prior to completing the requisite twenty years[, t]he 5% BRD [in the settlement] has no application to the members of the plaintiff class.”
Id.
at 53.
In an effort to overcome this plain language, the officers relied on a prior decision of this court,
District of Columbia v. Tarlosky,
675 A.2d 77 (D.C.1996), and a decision of the Superior Court based on
Tarlosky, Abbott v. District of Columbia,
C.A. No. 95-5668 (D.C.Super.Ct. July 23, 1996), to argue that the District was “collaterally estopped from contesting the retirees’ claim of eligibility for the 5% BRD.”
Gould, supra,
852 A.2d at 55. We rejected the officers’ argument on two grounds.
Our first ground for rejection relied on the proper application of collateral estop-pel. We observed that collateral estoppel (whether mutual or non-mutual) can apply only if “the previously resolved issue [is] identical to the one presented in the current litigation” and then only if “the issue to be concluded [was] raised and litigated, and actually adjudged.”
Gould, supra,
852 A.2d at 56 (internal alterations, citations, emphasis, and quotation marks omitted). We observed further that the issue addressed in
Tarlosky
and
Abbott
(whether “the 5% BRD is a salary increase”) was not the same as the issue raised by the plaintiff class in
Gould
(whether they were “eligible] for the 5% BRD”), and also that, “in
Abbott,
the ‘judicial mind’ did not pass on the question before us in this case.”
Id.
at 55-56. Finally, we observed that “[a]lthough it may well be that the District could have raised this issue vis-a-vis at least some of the plaintiffs in the
Abbott
case, the point was not actually litigated or decided.”
Id.
at 56. We therefore held that “the decision in
Abbott,
a case in which the present issue was not raised by the District or resolved by the court, can
not collaterally estop the District from raising that issue
here,Id.
Our second ground for rejecting the officers’ collateral estoppel argument rested on broader principles. We noted that “decisions of the Supreme Court make clear that estoppel can rarely be asserted against the government ... because the government is never disabled from protecting the public interest by reason of the past mistakes of its agents.”
Id.
(internal alterations and quotation marks omitted) (citing,
inter alia, Schweiker v. Hansen,
450 U.S. 785, 788-89, 101 S.Ct. 1468, 67 L.Ed.2d 685 (1981), and
Utah Power & Light Co. v. United States,
243 U.S. 389, 409, 37 S.Ct. 387, 61 L.Ed. 791 (1917)). We further noted:
Estoppels against the public are little favored, and they generally cannot be asserted against, and are not applicable to, the government or governmental entities. They should not be invoked except in rare and unusual, or exceptional, circumstances, and may not be invoked where they would operate to defeat the effective operation of a policy adopted to protect the public. They must be applied with circumspection, restraint, reluctance, and caution, especially where their application would have an adverse impact on the public fisc. The doctrine should be applied only in those special cases where the interests of justice, as variously stated, dearly require it.
Id.
at 56-57 (quoting 31 C.J.S.
Estoppel and Waiver
§ 168, at 648-49 (1996 & Supp. 2003)). In light of these principles, we held “that even if the District could have raised in
Abbott
the issue now before us, this is not an appropriate case for applying the doctrine of offensive collateral estoppel against the District,”
Id.
at 57.
B.
The oil companies contend that our discussion of general principles underlying application of offensive non-mutual collateral estoppel to the District and its entities is not binding, but rather is better read as dicta. In support of this contention, they point to a footnote contained in that discussion, in which we observed, “The District should not be compelled to pay out legally unauthorized pension money simply because its attorneys failed to raise the present issue in
Abbott.” Gould, supra,
852 A.2d at 57 n. 7. The oil companies argue that this footnote appears to link our discussion of the general applicability of offensive non-mutual collateral estoppel against the District to our initial holding;
consequently, they argue, that discussion is not and should not be viewed as an independent, binding holding. In addition, the oil companies point out that (1) we do not explicitly distinguish between mutual and non-mutual collateral estoppel in our discussion in
Gould
and (2) our rationale for limiting the application of collateral estoppel against the District applies equally in both situations. According to the oil companies, this would “represent a dramatic departure from settled law,” as it would require litigants against the District to show exceptional circumstances to justify invoking even mutual collateral estoppel against the District. Thus, the oil companies’ logic seems to be that because our discussion of non-mutual collateral estop-pel in
Gould
appears to (1) be interlinked with our alternative holding in
Gould
and (2) have potentially dramatic implications for previously settled law, that discussion is better interpreted as non-binding dicta than as an independent, binding holding.
c.
We are not persuaded that
Gould’s
discussion of the general applicability of offensive non-mutual collateral estoppel against the District is dicta, rather than an independent, alternative holding binding this division of the court.'
See M.A.P. v. Ryan,
285 A.2d 310, 312 (D.C.1971). Although we do not disagree with the oil companies’ first argument that our discussion of the' application of non-mutual collateral estoppel against the District in
Gould
is linked with our alternative holding, that link does not make that discussion dicta. Both holdings in
Gould
do rely on the fact that the District’s attorneys did not raise in
Abbott
the issue that we faced in
Gould.
In our first holding, that fact was disposi-tive because it meant that the officer-ap-pellees failed to satisfy one of the basic elements of collateral estoppel because the issue they sought to estop thé "District from re-litigating had not been “actually litigated” in
Abbott.
See
infra
note 8. By contrast, in our' second, alternative holding, the fact that, the District’s attorneys did not raise in
Abbott
the issue that we faced in
Gould
was dispositive for the separate reason that we did not want to estop the government from litigating the issue based on a past'mistake of its attorneys. In essence, then, our alternative holding in
Gould
was that, even
if
the District’s attorneys’ failure to raise in
Abbott
the issue that we faced in
Gould could
justify estop-ping the District, we would not estop the District based on the authorities we cited, including Supreme Court precedent and a treatise summarizing relevant case law, that indicated that “[ejstoppels against the public are little favored” and “should not be invoked except in rare and unusual, or exceptional, circumstances.'...” 852 A.2d at 56. We thus see no reason to interpret our second holding in
Gould
as dicta simply because of its link to our first holding.
Furthermore, we are not persuaded by the oil companies’ second argument that we should interpret our alternative holding' in
Gould
as dicta because if we interpret it as a binding holding it has potentially dramatic implications for previously settled law concerning mutual collateral estoppel. We do not disagree in principle that
Gould
may have implications for mutual collateral estoppel that we did not contemplate. However, we were not required to consider those implications in
Gould
because the facts of
Gould
were limited to the application of offensive non-mutual collateral es-toppel against the District. To put it in
Gould’s
terms, “the ‘judicial mind’ did not pass” on the question of how our holding would affect the application of mutual collateral estoppel against the District, and thus our holding in
Gould
“does not constitute precedent with respect to that question.” . 852 A.2d at 55;
see also Richman Towers Tenants’ Ass’n, Inc. v. Richman Towers LLC,
17 A.3d 590, 610 (D.C.2011) (“The rule of
stare decisis
is never properly invoked unless in the decision put forward as precedent the judicial mind has
been applied to and passed upon the precise question.” (internal alterations omitted) (quoting
District of Columbia v. Sierra Club,
670 A.2d 354, 360 (D.C.1996))).
The judicial mind did, however, pass on the precise question we face here: whether offensive
non-mutual
collateral estoppel applies to the District of Columbia and its entities. As a result, we conclude that our answer to that question in
Gould
is binding on this division of the court,
see M.A.P., supra,
285 A.2d at 312, and therefore guides our further analysis.
III.
Having determined that we are bound by
Gould’s
discussion of the applicability of offensive non-mutual collateral estoppel against the District, we must determine the proper resolution of OTR’s petitions for review. Ordinarily, “[pjroper application of non-mutual offensive collateral estoppel requires a two-step inquiry.”
In re Wilde,
68 A.3d 749, 759 (D.C.2013) (quoting
Modiri, supra,
904 A.2d at 395). “In the first step, the trial court must determine whether a case meets the traditional requirements for invoking collateral estoppel.”
Id.
The second step involves a discretionary balancing of a long list of factors to “determin[e] whether the offensive use of non-mutual collateral estoppel would be fair.”
Id.
at 760 (quoting
K.H., Sr. v. R.H.,
935 A.2d 328, 333-34 (D.C.2007));
see also id.
at 760-61 (listing factors). However, in cases involving the assertion of offensive non-mutual collateral estoppel against the District or one of its entities,
Gould
adds a third step, to the inquiry. “Estoppels against the public are little favored” and “should not be invoked except in rare and unusual, or exceptional, circumstances ..., especially where their application would have an adverse impact on the public fisc.”
Gould, supra,
852 A.2d at 56. Thus, when the party against whom offensive non-mutual collateral es-toppel is asserted is the District or one of its entities, courts and administrative bodies should apply the doctrine “only in those special cases” involving “exceptional[] circumstances,” “where the interests of justice ... clearly require it.”
Id.
Whether such exceptional circumstances exist in these cases is a matter for
OAH to decide in the first instance, subject to our deferential review.
Cf. Modiri, supra,
904 A.2d at 400 (applying abuse-of-diseretion standard of review to trial court’s ruling as to fairness factors). None of the parties cited
Gould
to OAH, see
supra
note 3, and OAH did not address the question of whether exceptional circumstances exist in these cases. As a result, OAH’s application of offensive non-mutual collateral estoppel against OTR was an abuse of discretion,
see Ford v. Chartone, Inc.,
908 A.2d 72, 84 (D.C.2006) (“A discretionary judgment must be founded upon correct legal principles, and a court by definition abuses its discretion when it makes an error of law.” (internal alterations, citations, and quotation marks omitted)),
and we therefore must remand the case for OAH to address this question.
iy.
In sum, we hold that
Gould’s
discussion of the applicability of offensive non-mutual collateral estoppel against the District and its entities is binding and applies in these cases and that OAH’s decision to apply offensive non-mutual collateral estoppel against OTR without accounting for
Gould’s
discussion was an abuse of discretion. Consequently, OAH erred in granting the oil companies summary judgment.
Accordingly, for the foregoing reasons, we vacate the orders issued by OAH granting the oil companies summary judgment and remand for further proceedings consistent with this opinion.
So ordered.