The approval of perpetual futures contracts in the US may expose traders to unforeseen tax and regulatory ambiguity, as the distinction between swaps and futures remains unresolved, warns CME Group Chairman and CEO Terry Duffy. In an interview, Duffy emphasized the potential tax implications for US participants, citing the ambiguity surrounding the products. The core issue lies in whether perpetual futures should be legally categorized as swaps or futures, with Duffy arguing that they should be considered swaps due to periodic funding payments between long and short positions. Unlike traditional futures, perpetual contracts do not expire and involve recurring funding payments to maintain the derivative's price close to the underlying asset's price.

Duffy believes this mechanism aligns with the statutory definition of a swap under US law. The misclassification of perpetual contracts as futures could result in institutional traders receiving a blended tax treatment, with gains and losses treated as 60% long-term and 40% short-term capital gains. However, if these contracts are deemed swaps, they would be subject to ordinary taxation. The IRS has not issued specific guidance on the tax treatment of perpetual futures, leaving market participants uncertain about how to report their positions.

Legal experts, including Rustin Diehl and Jason Gottlieb, agree that the issue is complex, with the definition of swaps being broad and open to interpretation. The outcome of the court battle between CME and the CFTC will significantly influence the tax treatment of perpetual futures, and the Supreme Court's decision to eliminate the Chevron doctrine may lead to federal courts playing a larger role in interpreting derivatives laws.

The process is expected to be lengthy, with potential litigation and the need for separate guidance from the IRS. Until regulators, tax authorities, or courts provide clarity, large institutions may face uncertainty in reporting trades involving perpetual futures, potentially leading to tax implications and reputational risks.