Tax alert

Tax Court Rejects $714M Basis Play in Otay

Tax Court applies economic substance doctrine to disallow basis-shifting plan

March 09, 2026
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Executive summary

In Otay Project LP v. Commissioner, the U.S. Tax Court sustained the IRS's disallowance of a nearly $714 million basis deduction claimed by a family real estate partnership. Though concluding that the partnership incorrectly calculated the section 743(b) adjustment giving rise to the deduction, the court found in the alternative that the complex series of partnership transactions engineered to create the claimed deduction was a tax-driven sham that lacked economic substance. As such, the court disregarded the literal application of the partnership tax rules, focusing instead on the lack of a legitimate non-tax business purpose and the absence of any meaningful economic change apart from the tax savings.

The decision is an affirmation of the economic substance doctrine's role as a judicial backstop against transactions that, while formally compliant with the Internal Revenue Code (Code), are inconsistent with congressional intent. Although the transactions in Otay predated the codification of the economic substance doctrine under section 7701(o), the court's analysis provides a clear roadmap for how it will likely scrutinize similar basis-shifting schemes under the current statutory regime. The case serves as reminder to taxpayers that courts will look past the form of a transaction to its underlying substance, or lack thereof.

Basic overview of the Otay decision

The case involved two brothers, Al and Jim Baldwin, who were 50-50 partners in a large Southern California real estate development business, Otay Project, LP (OPLP). OPLP used the completed contract method (CCM) of accounting, which allowed it to defer recognition of over $700 million of income from land sales.

After a falling out, an arbitrator ordered the brothers to separate their business interests in 2005. They engaged tax advisors to structure the unwinding of their joint ventures. The advisors implemented a complex restructuring plan that involved, among other steps, creating new financing companies (Fincos) for each brother's family, separating the rights to receive payments on land sales from the obligation to perform the related construction work, and undertaking a series of estate planning transfers. These transfers were designed to trigger a technical termination of OPLP, which, with a section 754 election in effect, would generate a massive basis step-up under section 743(b).

When OPLP liquidated in 2012, it finally recognized the deferred CCM income but claimed an offsetting deduction, which it attributed to the section 743(b) basis adjustment. The IRS disallowed the deduction, arguing the transactions were a sham designed solely to create an artificial tax benefit.

The Tax Court’s economic substance doctrine analysis (pre-codification)

Though the court held that the partnership had incorrectly calculated the section 743(b) basis adjustment, it provided a detailed alternative holding based on the common law economic substance doctrine.

First, the court affirmed that the economic substance doctrine can override the literal statutory text of a provision. The taxpayer argued that the economic substance doctrine could not be used to override the clear, mechanical rules of section 743(b). The court rejected this position and emphasized the long-standing principle that courts can disregard transactions that comply with the literal terms of the Code but lack economic reality. The court stated that the ultimate question is "whether what was done, apart from the tax motive, was the thing which the statute...intended."

Next, the court applied the holistic, two-pronged inquiry used by the U.S. Court of Appeals for the Ninth Circuit, examining (a) the objective economic effects of the transaction and (b) the subjective motivation of the taxpayer.

  • Objective Analysis (Lack of Economic Effect): The court found the transactions lacked objective economic substance. The stated business purpose was to separate the brothers' interests, but the court found the "exceedingly complex and contrived" restructuring was inconsistent with the straightforward dissolution ordered by the arbitrator. The court deemed the flow of funds to be "circular" and found the separation of the income rights (the notes receivable) from the associated construction obligations to be "unnatural, from a business standpoint." It was not persuaded that the transactions meaningfully changed the parties' economic positions or business risks.
  • Subjective Analysis (Lack of Business Purpose): The court also found no compelling non-tax business purpose for the transactions. It concluded that the entire series of steps was "predetermined and engineered principally to create a substantial inside-outside basis disparity" to achieve "indefinite tax deferral." The court found the testimony of the IRS's financial economics expert, who concluded there was no meaningful non-tax economic benefit to the restructuring, compelling evidence of the tax-avoidance motive.

In sum, the court concluded that the transactions were a tax-driven sham and disregarded them for tax purposes.

Significance for taxpayers

As discussed, the transactions in Otay occurred before the 2010 codification of the economic substance doctrine in section 7701(o). However, the court's analysis under the common law doctrine is highly instructive for how it would approach cases under the statute. Section 7701(o) requires a transaction to have economic substance only if it (a) changes in a meaningful way (apart from Federal income tax effects) the taxpayer's economic position and (b) the taxpayer has a substantial purpose (apart from Federal income tax effects) for entering into such transaction. The Otay court's objective and subjective analysis aligns closely with these two prongs. This suggests that a similar transaction undertaken today would almost certainly be invalidated under the codified rule.

Importantly, the application of the codified doctrine is still developing. In Patel v. Commissioner, the Tax Court held in a reviewed opinion that section 7701(o) requires a threshold determination that the economic substance doctrine is "relevant" to a transaction prior to any application of the two-part test. This interpretation contrasts with a district court's finding in Liberty Global, which held that the relevancy test was coextensive with the two-part test itself. The Otay decision, while not explicitly addressing the "relevancy" test, shows that even under common law, courts engage in a similar threshold inquiry by asking whether the doctrine can be applied to override a specific statutory provision. Here, the court answered in the affirmative. This suggests that courts see the doctrine as a vital tool to police abuse, regardless of the specific statutory language at issue.

Finally, the Otay decision’s approach to the issue of penalties is worthy of note. The court ultimately found that the partnership had reasonable cause for its position based on its reliance on extensive and detailed tax opinions from multiple reputable firms. As a result, it was not liable for penalties. However, taxpayers engaging in similar transactions subject to the current codified economic substance doctrine face a much harsher penalty regime. Section 6662(b)(6) imposes a 20% penalty for underpayments attributable to a transaction lacking economic substance. This penalty is increased to 40% if the transaction was not adequately disclosed, and the reasonable cause defense is not available for this penalty.

Concluding thoughts

The Tax Court sustained the IRS’s disallowance of the $714 million basis deduction on the basis of the common law economic substance doctrine. The court’s application of an objective and subjective analysis algins with the two-prong test contained in the codified economic substance doctrine of section 7701(o). This suggests that if the court applied the codified doctrine to a similar set of facts, it would reach a similar outcome, potentially subjecting the taxpayer to more severe penalties under section 6662(b)(6).

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