Moving From Switzerland to the US for Work: A Pre-Arrival Financial Checklist for Swiss Professionals

What Changes When You Move

For a Swiss professional accepting a role in Boston, New Jersey or San Francisco, the three-pillar pension system that works beautifully inside Switzerland becomes one of the most complicated pieces of a US tax return. Pillar 2 is a workplace pension that can, in certain cases, pay out a large lump sum on departure. Pillar 3a is a tax-favoured private retirement vehicle the US does not automatically recognize. Swiss-domiciled funds can trigger the same PFIC regime that catches UCITS investors elsewhere in Europe. And the 35 per cent anticipatory withholding tax interacts with US foreign tax credits in ways many first-year US returns miss.

This article explains what a Swiss professional should understand about their finances before arriving in the United States. It is written for a corporate relocatee or specialist hire with a Pillar 2 occupational pension, a Pillar 3a, a Swiss bank or securities account, possibly a vested-benefits account from a former employer, and possibly a Swiss home. The aim is to help you walk into a pre-arrival conversation with a qualified US tax preparer and a cross-border adviser already knowing the questions that matter most.

The Swiss Accounts That Need Pre-arrival Attention

Most Swiss professionals arrive in the United States carrying a characteristic mix of accounts. A Pillar 2occupational pension with a current employer, with the option of a vested-benefits (Freizügigkeit) account if employment ends before retirement. A Pillar 3a account, often with a Swiss bank or insurer. Direct Swiss equities and Swiss-domiciled mutual funds in a securities account at UBS, Credit Suisse's successor entities, Post Finance, a cantonal bank or an independent asset manager. A Swiss bank account or three. A Swiss life insurance policy structured for the Swiss tax system. And, for many, a Swiss principal residence kept rather than sold.

Each behaves very differently once the holder becomes a US tax resident. Some continue with a treaty-based position that the US return has to document. Some lose their Swiss-side advantage the moment US residency begins. A handful fall into US categories that are punitive and reporting-heavy. The sections below work through the ones that come up most often.

{{INSET-CTA-1}}

Retirement: Pillar 2, Pillar 3a and the Treaty

For most Swiss professionals, the Pillar 2is the largest account of any kind they own. The US-Switzerland income tax treaty recognizes Swiss pension schemes and permits a treaty-based deferral of US tax on growth inside the scheme. In plain English: interest, dividends and capital gains inside Pillar 2 and Pillar 3a can continue to compound without US tax on accrual, provided the treaty position is taken on the US return.

The Pillar 2 departure decision

Leaving Switzerland triggers a pension decision. The balance can stay inside the employer's scheme, move to a vested-benefits account, or in some circumstances be taken as a lump sum at departure. Each path has different US consequences. A pre-US-residency lump summary fall outside the US tax net entirely. A lump sum after US residency begins is a US-taxable event, with Swiss withholding creditable through the Foreign Tax Credit. The calendar day of the payment matters as much as the amount.

Contributions from the US

New Pillar 2 and Pillar 3a contributions generally require Swiss earnings or Swiss residency. Once a corporate transferee moves to US payroll and Swiss residency ends, contributions typically stop. The existing balances do not disappear, they just stop growing through new money.

Growth, disclosure and the Form 8833 position

Without a treaty position, the US default is to look through many foreign pensions and tax the growth as it accrues, year by year. The treaty's pension article is what prevents that outcome. Form 8833is used to disclose the treaty-based return position. In my work with Swiss arrivals, the combination of Pillar 2, Pillar 3a and a vested-benefits account typically produces three separate disclosure decisions in the first US filing year.

Investments: Swiss Funds, Life Policies and the PFIC Overlay

Swiss-domiciled mutual funds

Swiss-domiciled mutual funds are typically classified as Passive Foreign Investment Companies, or PFICs, under US rules, regardless of how conservatively or well they have been managed inside Switzerland. The PFIC regime taxes gains as ordinary income, applies an interest charge on deferred gains and requires an annual Form 8621 for each holding. A diversified Swiss portfolio can contain ten or more separate PFICs. This is the largest pre-arrival cleanup conversation for Swiss-origin arrivals, and it is much better addressed before US residency begins than after.

Direct Swiss equities and bonds

Direct holdings of Swiss shares and bonds sit outside the PFIC regime. Dividends and coupons become US-taxable from the residency start date. Swiss 35 per cent anticipatory tax on dividends and interest generally flows through the Foreign Tax Credit rather than being ignored, the US return reports the gross income, with an offset for the Swiss tax actually paid.

Swiss life insurance and structured wrappers

Swiss life insurance policies and bank-owned investment wrappers that function as life policies in the Swiss system may not meet the US definition of life insurance under §7702. When they do not, the growth inside the policy can be taxable on the US return in ways the Swiss-side paper work never hints at. The underlying fund holdings inside a wrapper can themselves be PFICs.

Property, Cost Basis and the Calendar Day You Land

Cost basis on appreciated Swiss assets

Cost basis on appreciated Swiss holdings does not reset on the day US residency begins. A share bought at CHF 10,000 and worth CHF 25,000 on arrival has a US cost basis of CHF 10,000, not CHF 25,000.A sale after US residency begins is a US-taxable gain measured from the original purchase price. Many arrivals meet this point only after they have already sold something.

A Swiss primary residence, sell, rent or hold

A Swiss home raises several separate questions. Sold before US residency begins, the transaction does not touch the US return. Kept and rented, the rental income becomes US-taxable with Swiss tax credited through the Foreign Tax Credit, covered in the foreign rental piece in this series. Kept vacant, the property generates no US tax event until sold or let. Currency matters too: a Swiss franc mortgage paid off during US residency can generate a US-taxable foreign currency gain under §988.

FBAR, Form 8938 and Form 8833

Three reporting forms commonly apply, and all three routinely apply to Swiss arrivals. FBAR, FinCEN Form 114, applies when aggregate foreign financial accounts exceed the FinCEN-published threshold at any point in the year. Swiss multi-account structures make the threshold easy to cross. Form 8938 applies at higher FATCA thresholds and is filed with the US return. Form 8833 discloses treaty-based positions, including the Pillar2 and Pillar 3a growth deferrals.

The US tax residency start date

Under the substantial presence test, the default start date is the first day of physical US presence in the calendar year of arrival. Election options, the first-year choice and dual-status filing, can move that date. A pre-arrival Pillar 2 lump sum, stock sale or Swiss fund disposal can land on either side of the residency line depending on the day of the move.

{{INSET-CTA-2}}

Swiss Assets at a Glance: What Changes on US Day One

Illustrative summary of common Swiss-origin accounts and their US treatment for a new US tax resident. The IRS publications and the US-Switzerland treaty text are the authoritative sources for the rules in force at any point in time.

Source: Skybound 2026

Questions To Raise With A Qualified Adviser

For a Swiss professional thinking through apre-arrival checklist, questions worth raising with a qualified US tax preparer and a cross-border adviser include:

• What is my full inventory of Swiss accounts, and what is each one's US treatment as a resident?
• What are the US consequences of the Pillar 2 lump-sum, transfer or leave-in-scheme options at my departure date?
• Which of my Swiss fund andinsurance holdings are PFICs or failed §7702 policies, and is restructuringavailable before US residency begins?
• How should Pillar 2, Pillar 3a and any vested-benefits account be disclosed on my first US return, and who handles each Form 8833 position?
• What FBAR and Form 8938 filings will apply to my Swiss multi-bank account structure, including joint filings with a non-US spouse?
• What residency start-date options apply given my planned arrival date, and what does each one imply for pension timing?