In our blog post IRS Tax Relief for U.S. Taxpayers with Certain Foreign Pensions I wrote: Before anyone goes rushing into investing in a Pillar 3 or other individual foreign pensions, though, one final comment about PFICs. Swiss ETFs or mutual funds, and other foreign investment funds that are the typical investment vehicles used in foreign individual retirement accounts, are generally classified as PFICs for US tax purposes. PFICs are