The main point of dispute over the tax deductibility of goodwill paid in the acquisition of investments is not limited to the corporate structuring of transactions, but lies primarily in the legal nature assigned to that goodwill under tax law. When the debate remains tied to instrumental elements—such as the use of special-purpose vehicles, sequences of mergers, or an alleged “business purpose”—the controversy tends to persist, because the same facts take on different meanings depending on the legal lens used to frame goodwill. This brings back the distinction between interpretive tax planning, centered on interpreting the law without changing the factual substance, and factual-concrete tax planning, in which facts are reorganized to achieve a more favorable tax regime. In the goodwill context, however, this boundary becomes porous, since the chosen legal qualification shapes both the reading of the facts and the perception of whether the planning is lawful or unlawful.
Based on an empirical review of hundreds of CARF decisions, four approaches to this legal nature can be mapped. The first treats goodwill as a tax benefit, an exception to the general rule of non-deductibility; this leads to a restrictive interpretation and greater suspicion toward reorganizations designed to artificially create conditions for deduction. The second views goodwill as an extrafiscal incentive, historically linked to fostering privatizations and vertical reorganizations; under this view, companies gain broader freedom to structure acquisitions for deductibility, including through the use of holding vehicles. The third assigns goodwill the role of a specific anti-avoidance rule: deduction is allowed, but with the purpose of containing abusive planning, requiring stricter substantive conditions, such as the presence of the “real” buyer of the investment; in this framework, deduction is legitimate only in narrowly defined situations. The fourth considers goodwill rules as shaping the IRPJ and CSLL tax base, functioning as a deferral technique or cost recognition mechanism; here, the focus shifts to economic coherence, neutrality, and accounting matching, opening space for less punitive readings of the reorganization itself.
A simple conclusion follows: there is no single answer about the validity of goodwill tax deductibility without first choosing the appropriate legal interpretive key. If goodwill is read as a tax benefit, strict limits apply; if read as an incentive, greater deference is given to corporate freedom of organization; if read as an anti-avoidance rule, deduction becomes a controlled exception subject to material requirements; and if read as part of the tax-base structure, the debate revolves around economic and accounting consistency. For that reason, the analysis of goodwill cases should begin with an explicit definition of its legal-tax nature, because that choice guides the proper interpretation of the facts and allows legitimate planning to be distinguished from simulation.
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