Bull v. United States: Equitable Recoupment and the Double Taxation of a Single Transaction
Decision: Bull v. United States, 295 U.S. 247 (1935).

When the government imposes two inconsistent taxes on the same transaction and the period for independently recovering the first tax has expired, equitable recoupment permits the taxpayer to offset the erroneous earlier tax against a timely proceeding arising from that same transaction—without reviving a time-barred standalone refund suit.
Procedural Posture
The case arose from the estate of a deceased partner. After the partner's death, the firm earned profits that were distributed to the estate. The government first treated those profits as part of the estate corpus and collected estate tax on them. It later determined that the same profits constituted income and assessed income tax. By the time the income-tax proceeding was before the Court of Claims, the period for filing an independent refund claim for the estate tax had expired. The executor sought to offset the erroneous estate tax against the income-tax liability in the pending proceeding. The Court of Claims denied relief, and the Supreme Court reversed. Bull v. United States, 295 U.S. 247, 250–54 (1935).
The Governing Doctrine
The Court described equitable recoupment as a defensive doctrine rooted in the principle that a court with jurisdiction over a timely claim may prevent an inequitable result arising from that same transaction, even if the period for an independent action on the offsetting claim has run. Id. at 261–62. The doctrine does not create a new cause of action or revive a time-barred refund suit. It operates only within the scope of a proceeding already properly before the court.
Three conditions define the doctrine as the Court applied it. First, the same transaction must have given rise to both the timely claim and the barred overpayment. Second, the two taxes must have been imposed inconsistently—that is, the government must have taken legally contradictory positions about the character of the same item. Third, the party asserting recoupment must be doing so defensively within a proceeding that is itself timely. Id. at 259–63.
In plain terms: the government cannot collect two taxes on the same dollar by treating that dollar as estate corpus for one purpose and income for another, and then use the running of the limitations period to insulate the first collection from any accounting.
What the Court Decided
The Court held that the executor was entitled to recoup the erroneous estate tax against the income-tax liability in the pending Court of Claims proceeding. Id. at 263–64. The result rested entirely on the unity of the underlying transaction and the government's inconsistent legal treatment of it. The Court was careful to frame recoupment as a narrow equitable tool, not a broad license to disregard limitation periods whenever a taxpayer believes it has overpaid in a prior year.
Limits of the Holding
Later decisions have kept Bull's doctrine tightly bounded. The Supreme Court reaffirmed and clarified those limits in United States v. Dalm, 494 U.S. 596 (1990). The key constraints are: the competing taxes must arise from a single transaction or taxable event, not merely related transactions or the same taxpayer's affairs generally; the inconsistency must be legal rather than merely factual; the party asserting recoupment must be the same taxpayer or one with a sufficiently identical interest; and recoupment cannot be used as an affirmative claim to generate a net refund beyond the amount of the timely liability. It is not a general netting device across different tax years, different taxpayers, or different transactions, and it does not excuse a taxpayer from filing timely administrative refund claims when an independent refund remains available.
Practical Application
Bull matters most in estate and income tax disputes where the same asset, distribution, or transaction has been characterized differently by the government at different times. Practitioners should identify early whether the government has taken inconsistent positions on the same item, whether a timely proceeding is already pending, and whether the barred overpayment arises from that same transaction. Because the doctrine is narrow and courts apply it cautiously, the factual record connecting the two taxes to a single transaction must be developed with precision. Equitable recoupment is a last resort when the limitations period has foreclosed a direct refund claim, not a substitute for timely administrative action.
Primary Authority
- Bull v. United States, 295 U.S. 247 (1935)
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