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Topic · Switzerland

PFICs & Swiss Investments for U.S. Persons

Why Swiss and European funds are often PFICs, what Form 8621 means, and how to check your holdings before filing.

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One of the biggest surprises for Americans investing in Switzerland is the PFIC regime. A PFIC (passive foreign investment company) is, in practice, most non-U.S. pooled funds — and U.S. tax treats them unfavorably.

Why a Swiss or European ETF is usually a PFIC

PFIC status turns on the fund's structure and non-U.S. domicile, not on what it invests in. A Switzerland- or Ireland-domiciled ETF — even one tracking U.S. stocks — is generally a PFIC for a U.S. person who holds it.

Individual stocks are generally not PFICs. The issue is funds and ETFs organized outside the U.S.

What a PFIC means at filing time

  • Each PFIC generally needs its own Form 8621.
  • Without an election, the default rules can be punitive.
  • Elections (QEF, mark-to-market) change the treatment but have requirements.

What to check

List every fund/ETF you hold, including inside an invested pillar 3a. The free Tax Risk Check flags whether a PFIC review is likely worthwhile for you.

Atamatax provides tax preparation support and educational resources. This website does not constitute legal or tax advice.

Frequently asked questions

Is an S&P 500 ETF I bought in Switzerland a PFIC?
If it's a non-U.S.-domiciled fund (e.g. Irish or Swiss UCITS), then for a U.S. person it's generally treated as a PFIC even though it holds U.S. stocks. A U.S.-domiciled ETF is not a PFIC.
Do I really have to file a Form 8621 for each fund?
Generally each PFIC requires its own Form 8621, with a per-fund election decision. This is exactly the work Atamatax is built to handle.
Is my pillar 3a a PFIC?
A cash 3a isn't, but an invested 3a (e.g. via VIAC, finpension, Frankly) typically holds non-U.S. funds that are PFICs. See our pillar 3a guide.

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