Interactive Brokers (IBKR) & PFICs in Switzerland

Interactive Brokers (IBKR) & PFICs for U.S. citizens in Switzerland

Why IBKR is the go-to broker for Americans in Switzerland — and the one PFIC trap that remains even there.

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.

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Among Americans in Switzerland, Interactive Brokers is the most commonly recommended broker — and the reasons are directly about U.S. tax.

Why U.S. persons in Switzerland use IBKR

It's a U.S. company; Swiss residents are typically serviced via the UK branch.
It issues U.S. tax statements (1099-style), which makes filing far easier.
It lets you hold U.S.-domiciled ETFs — and those are not PFICs.

(This reflects widely reported community practice among U.S. persons in Switzerland — confirm the account entity and tax reporting for your situation with IBKR.)

The big win: at IBKR you can hold U.S.-domiciled ETFs, so you can build a portfolio with no PFICs at all.

The trap that remains: UCITS funds at IBKR are still PFICs

IBKR doesn't make a fund non-PFIC. If you hold a UCITS / EU or Swiss-domiciled fund at IBKR, it is still a PFIC that needs Form 8621. The broker helps you file; the fund's domicile is what decides PFIC status.

PFIC status follows the fund's domicile, not the broker. U.S.-domiciled at IBKR = fine. UCITS at IBKR = still a PFIC.

How to check you're PFIC-clean

Paste your IBKR holdings' ISINs into the checker: anything starting US… is not a PFIC; anything else is likely one and needs Form 8621.

Confirm none of your IBKR funds are PFICs

Paste your ISINs into the free Swiss PFIC checker. Atamatax is tax-preparation software, not a CPA firm, and this is not individualised tax advice.

Check my holdings

Broker policies and account entities change — confirm with IBKR. 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)

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

Does using IBKR make me PFIC-free?

Only if you hold U.S.-domiciled ETFs. IBKR lets you hold them, which is the point — but a UCITS or Swiss-domiciled fund held at IBKR is still a PFIC that needs Form 8621. PFIC status depends on the fund's domicile, not the broker.

Does IBKR provide U.S. tax forms?

IBKR issues U.S. tax statements, which U.S. persons in Switzerland widely report and which is a large part of why it's recommended. Confirm the exact reporting for your account entity with IBKR.

Which IBKR entity serves a U.S. citizen in Switzerland?

Swiss residents are commonly serviced via the UK branch, per consistent community reports. The right entity depends on your residency and citizenship — confirm with IBKR directly.