UBS, Swisscanto funds & PFICs for U.S. citizens

How UBS handles U.S. persons, and why UBS and Swisscanto fund-based products can be PFICs that need Form 8621.

By Danilson Ramos · Founder, Atamatax

Updated July 2026

Tax review partner: onboarding in progress. This article has not yet been independently reviewed by a credentialed professional — every figure cites its IRS source so you can verify it directly.

Part of the Switzerland hub — every Swiss-US tax topic in one place.

Takes ~2 minutes — then continues into your full free diagnostic.

UBS serves U.S. persons differently from ordinary retail clients, and the fund-based products U.S. persons do end up holding raise PFIC questions.

How UBS treats U.S. persons

UBS generally serves U.S. persons through a specialised, FATCA-registered U.S. division rather than standard Swiss retail brokerage. (This is the widely described arrangement — confirm your own relationship and what you're permitted to hold with UBS.)

Why Swisscanto and advisory funds can be PFICs

UBS advisory and mandate products are often built on collective investment funds. A non-U.S.-domiciled fund — including Swiss-domiciled Swisscanto funds — is a PFIC for a U.S. person, and each one generally needs its own Form 8621 each year under the default §1291 rules.

U.S.-domiciled funds are not PFICs; Swiss- or EU-domiciled funds (including Swisscanto) generally are. Domicile decides it — check each holding.

Holding at UBS	PFIC?	Typical filing
Swisscanto / Swiss-domiciled fund	Likely	Form 8621 each year
UCITS / EU fund in a mandate	Likely	Form 8621 each year
U.S.-domiciled ETF	No	FBAR / Form 8938 if over threshold
Individual shares / cash	No	Report the account

Check your UBS or Swisscanto holdings

See which of your funds are PFICs that need Form 8621. Atamatax is tax-preparation software, not a CPA firm, and this is not individualised tax advice.

Check my holdings

Bank policies and product line-ups change — confirm with UBS. Atamatax provides preparation software and educational estimates, not individualised tax, legal, or investment advice.

Authorities cited

IRC §1297 — IRC §1297 — Definition of a passive foreign investment company
IRS Form 8621 — About Form 8621 — Information Return by a Shareholder of a PFIC or QEF
IRC §1291 — IRC §1291 — Interest on tax deferral (excess-distribution regime)
IRS Form 8938 — About Form 8938 — Statement of Specified Foreign Financial Assets
FinCEN Form 114 (FBAR) — Report of Foreign Bank and Financial Accounts (FBAR)

Primary sources (Cornell Legal Information Institute for the US Code and CFR; IRS.gov for forms, procedures, and treaty documents). This page is general information, not individualized tax or legal advice.

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

Frequently asked questions

Can U.S. citizens invest with UBS?

U.S. persons are generally served through a specialised, FATCA-registered U.S. channel rather than standard Swiss retail brokerage. What you can hold depends on that relationship — confirm directly with UBS.

Are Swisscanto funds PFICs?

Swisscanto funds are Swiss-domiciled collective investment funds, so for a U.S. person they are PFICs that need Form 8621. U.S.-domiciled funds are not — it turns on the fund's domicile, so check each holding.

Do I report UBS accounts on the FBAR?

Yes, if your combined non-U.S. financial accounts exceeded $10,000 at any point in the year — separate from whether any fund is a PFIC.