The IRS has ruled that a multinational company may retroactively replace a broad revenue-based cost allocation formula with a more granular, division-level methodology—and use the resulting adjustment to claim setoff relief under federal transfer pricing rules—provided the revised approach more precisely traces shared service costs to the specific benefits received by each controlled affiliate.

In a Chief Counsel Advice memorandum dated 27 January 2026 and released publicly on 1 May 2026, the US Internal Revenue Service (IRS) ruled that a multinational corporation could retroactively adopt a more detailed cost allocation approach for intercompany services—and use the adjustment to claim setoff relief under federal transfer pricing regulations.

According to the Chief Counsel, this new approach is more reliable because it creates a direct factual connection between incurred costs and the specific benefits received by affiliates. The document highlights that using the same data for internal management purposes serves as a strong indicator of the new method’s reliability.

The case centres on how a taxpayer priced controlled services transactions across two tax years under examination. Initially, the company allocated shared service costs to regional operating companies based on each entity’s proportion of total worldwide gross revenue—a simple, single-step formula. During the IRS review, however, the taxpayer proposed replacing this broad method with a more targeted two-step framework.

The two-step allocation framework

Under the revised approach, costs are first mapped to specific business divisions by identifying the relevant cost centres and general ledger accounts associated with each division and business function. These divisional costs are then distributed to regional entities based on each affiliate’s share of that particular division’s revenue. Costs that cannot be clearly tied to a specific division remain in an “other” category and continue to be allocated using the original worldwide revenue metric.

The taxpayer had already implemented this two-step method for a subsequent tax year, which the IRS examination team accepted without objection.

Why the new method qualifies as more reliable

The legal issue turned on whether this methodology satisfied the requirements for setoff relief under Treasury Regulation § 1.482-1(g)(4)(i). Setoff allows a taxpayer to reduce a transfer pricing adjustment by demonstrating that another related transaction was also not conducted at arm’s length—and by establishing what the proper arm’s length amount should have been.

Under § 1.482-9(k), cost allocations for controlled services must reasonably trace expenses to the specific benefits received by each party. The regulation explicitly discourages allocations based on generalised or non-specific benefit assumptions.

The Chief Counsel determined that the two-step method creates a stronger factual link between incurred costs and the benefits enjoyed by each regional affiliate. Significantly, the taxpayer already used this divisional cost mapping internally for budgeting, expense management, and workflow approvals—a factor the regulations identify as an indicator of reliability under § 1.482-9(k)(2)(ii).

Setoff relief granted

Because the revised method more accurately reflects economic substance and better traces costs to benefits, the IRS concluded that the original transactions were not priced at arm’s length. This finding satisfied the criteria for setoff relief, allowing the taxpayer to apply the adjustments retrospectively.

The memorandum, authored by Robert Z. Kelley, Branch Chief of Branch 6 (International), affirms that multinational corporations may refine their transfer pricing approaches retroactively if the new method provides a more precise connection between costs and the corresponding benefits received by controlled parties. The guidance carries the standard limitation that it cannot be cited as legal precedent.