US IRS treats planned ETF portfolio conversions as taxable exchanges

Section 351 of the Internal Revenue Code normally defers gain when property is transferred to a controlled corporation for its shares. The investment-company rules in section 351(e) and Treasury Regulation 1.351-1(c) restrict that treatment where a transfer diversifies the investor’s interests. Separately, section 852(b)(6) generally prevents a regulated investment company recognising gain when it distributes appreciated property in a shareholder-demanded redemption.^[1][2][4]

The integrated plan controls the result

The ruling examines an investor contributing appreciated, diversified securities to a newly formed ETF. Under the same plan, an authorised participant contributes cash or securities matching the fund’s investment strategy; shortly afterwards, the ETF redeems that participant’s shares using securities contributed by the investor. The fund ends up holding a materially different portfolio.^[1]

Applying substance-over-form and step-transaction principles, the IRS treats the fund as a conduit. The contributing investor makes a taxable exchange under section 1001 with the authorised participant for the contributed securities used in the redemption. The result also applies where several investors participate. The ruling amplifies Revenue Ruling 71-336 and distinguishes Revenue Rulings75-447 and 88-32.^[1]

Further action remains under consideration

Notice 2026-62 considers other strategies, including partnership variations of ETF conversions, box-spread funds and arrangements producing capital gains with offsetting ordinary losses. Treasury and the IRS may issue further guidance or challenge arrangements under existing law. Written comments are requested by 28October2026; the notice is not itself a blanket statutory amendment.^[2]

The notice expressly leaves outside its discussion genuine ETF seeding with assets intended to be retained consistently with the fund’s investment strategy, absent a substantial change in circumstances. For investment managers and corporate investors, the distinction is whether the contribution and subsequent redemption form an integrated plan to replace the original portfolio without recognising its built-in gains.^[1][2]