U.S. Tax Filing for Americans in Lausanne

Fixed-fee support for Americans in Lausanne — researchers, founders and multinational staff, with Swiss salary, accounts, FBAR and investments.

By Danilson Ramos · Founder, Atamatax

Published June 2026 · Updated July 2026

Part of the Switzerland desk — every US tax topic for Switzerland in one place.

Check the common Switzerland products

Which of these do you hold?

Pick every one that applies. Each gets its own read — what the US sees inside the wrapper, and which form it points at.

Free, no account, nothing you answer leaves this page. Open the full portfolio scanner

Local accounts and wrappers

Fund-based Pillar 3a (VIAC / finpension / Frankly)Interest-only (bank) Pillar 3a — no fundsNone of these

A screen from the product type. Whether a specific fund is a PFIC turns on its own annual facts; whether a wrapper is a trust or a pension for US purposes turns on its documents.

Lausanne draws Americans through EPFL and the university world, a growing startup scene, sports bodies, and nearby multinational headquarters around Lake Geneva. Academic stipends, founder equity and Swiss investing each have U.S. tax implications.

Typical situations we see in Lausanne

Researchers and academics with stipends and fellowships.
Founders and startup employees with equity and possibly a Swiss company.
New investors holding Swiss/European ETFs that may be PFICs.
Households with a non-U.S. spouse weighing filing-status options.

If you control a Swiss company or hold non-U.S. funds, a U.S. tax review before filing is worthwhile.

Authorities cited

IRC §1291 — IRC §1291 — Interest on tax deferral (excess-distribution regime)
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
31 CFR §1010.350 — 31 CFR §1010.350 — FBAR (FinCEN Form 114) filing requirement and $10,000 threshold
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

I'm a founder in Lausanne with a Sàrl — does that complicate U.S. taxes?#

Yes — owning or controlling a foreign entity adds U.S. reporting layers and is one of the more complex profiles, so it's worth specialized handling before filing. Atamatax can help you prepare and understand what may apply.

Do Americans in Lausanne still need to file U.S. taxes?#

In most cases yes — the U.S. taxes citizens and Green Card holders on worldwide income regardless of residence. Credits and exclusions often reduce the U.S. tax owed, but reporting (including the FBAR) can still be required.

Does Atamatax work with people based in Lausanne?#

Yes. Atamatax provides fixed-fee U.S. tax filing support for U.S. persons across Switzerland, including Lausanne. The final quote depends on your documents and tax situation.