ETC Sunoco Holdings v. USA, No. 21-10937 (5th Cir. 2022)
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Sunoco sued the Internal Revenue Service (“IRS”) in Texas federal court, seeking a partial refund of its income tax payments for 2010 and 2011. Sunoco’s claims rested on a theory of reduced tax liability that the company had argued unsuccessfully for prior tax years in the Court of Federal Claims. Because the issue was fully and actually litigated in the earlier case, the district court dismissed Sunoco’s new suit based on collateral estoppel, and the Fifth Circuit affirmed.
The court held that the only question is the correctness of the issue preclusion ruling. Sunoco did not dispute that the three traditional elements of preclusion are satisfied. It argued, however, that the court should have considered a fourth factor: whether there are “special circumstances that would render preclusion inappropriate or unfair.” The court found that because Sunoco and the IRS were both parties to Sunoco I, “an inquiry into special circumstances is unnecessary.” Sunoco is barred from relitigating the Federal Circuit’s conclusion that it cannot use the mixture credits to offset both excise-tax and income-tax liability.
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