The approval of perpetual futures contracts in the US may lead to unforeseen tax and regulatory uncertainty for traders if these products are ultimately deemed to be swaps rather than futures, a concern voiced by CME Group Chairman and CEO Terry Duffy. In an interview with CoinDesk, Duffy emphasized the ambiguity surrounding the tax implications for US participants.

This ambiguity stems from an ongoing legal challenge by CME against the Commodity Futures Trading Commission (CFTC) regarding the regulator's approval of perpetual futures contracts. The core issue revolves around whether perpetual futures should be legally categorized as swaps or futures, with Duffy arguing they should be considered swaps due to the periodic funding payments exchanged between long and short positions, which aligns with the statutory definition of a swap under US law. If perpetual contracts are classified as futures, institutional traders might receive a blended tax treatment, but if they are deemed swaps, they would be subject to ordinary taxation, potentially leading to tax reporting uncertainty for market participants. Legal experts, such as Rustin Diehl and Jason Gottlieb, note that the issue is complex, with the definition of swaps being broad and the economic function of perpetual futures resembling that of traditional futures.

The resolution of this issue may depend on court interpretation, following the Supreme Court's decision to eliminate the Chevron doctrine, which could lead to a lengthy litigation process. Ultimately, the tax treatment of perpetual futures may require separate guidance from the IRS, and until there is clarity, large institutions may face uncertainty in reporting trades involving these contracts.