Swiss Bank Account for US Citizens: 4 Options (2026)
For US persons living in Switzerland, PostFinance and UBS are the most straightforward everyday accounts in 2026: both charge no US-person surcharge, have established FATCA processes, and offer fully English apps. ZKB also accepts US persons but tacks on CHF 360 per year. Migros Bank opens accounts in branch according to user reports, although it doesn’t say so officially.
Overview: Which Swiss Banks Accept US Persons
| Bank | Best for | Monthly fee | US-person surcharge | Account opening | English support |
|---|---|---|---|---|---|
| PostFinance | Simplest everyday banking | CHF 5 (free from CHF 25k) | None | In-person only | App + e-banking |
| UBS | Hands-on advisor support | CHF 0 (Key4 Pure) | None | In-person only | App + e-banking |
| ZKB | English legal documentation | CHF 0 | CHF 360/year* | Only at Zurich headquarters | App + documents |
| Migros Bank | Existing Migros relationship | CHF 0 | None (reported) | In-person only | Limited |
*Exceptions possible, e.g. if you hold a mortgage with ZKB.
What is a US Person?
According to US tax law, US persons include not only US citizens but also individuals with a Green Card. Interestingly, Swiss citizens who were born and raised in Switzerland can also be considered US persons—specifically if they also hold a US passport. This can happen through birth in the USA or through American parents.
This article focuses exclusively on US persons who live in Switzerland and want to open a bank account here. Many Swiss banks are hesitant to maintain accounts for US persons, and for good reason.
FATCA and Worldwide US Taxation
The reason for many Swiss banks’ reluctance lies in the Foreign Account Tax Compliance Act (FATCA). This US law, introduced in 2010, requires foreign financial institutions to report account data of US persons directly to the IRS. For Swiss banks, that means considerable administrative effort.
The USA is one of the few countries worldwide that taxes its citizens even when they live abroad and already pay taxes there. This worldwide tax obligation applies regardless of where the income is earned. US persons must therefore file a US tax return every year, even if they haven’t lived in the USA for decades. Many smaller banks and financial service providers simply opt out of taking US persons as customers.
Important: As soon as you’re a US citizen, you must disclose this when opening an account, regardless of whether you also hold another citizenship. The bank is required to report your data to the US tax authority.
What Documents Do US Persons Need to Open an Account?
All four banks typically ask for:
- Passport or Swiss ID
- Swiss residence permit or proof of address
- US tax identification number (SSN or TIN)
- The bank’s FATCA self-certification
- Form W-9 for US persons
For larger deposits or planned investments, banks also ask about the source of funds. Plan about an hour for the branch appointment and bring originals of every document.
PostFinance
PostFinance is open to all US persons with residency in Switzerland and doesn’t charge any additional fees. This makes it the most attractive option for everyday banking.
The relevant account models are:
- Smart Banking for CHF 5 per month: personal account, savings account, and debit card
- SmartPlus for CHF 10 per month: additionally includes a credit card
Anyone who deposits CHF 25,000 or more with PostFinance gets a CHF 5 per month discount on account fees, which makes the Smart Banking package effectively free.
Online account opening is not possible — you must visit a branch in person. The PostFinance app and e-banking are fully available in English.
UBS
UBS also accepts US persons with Swiss residency without additional fees. As the only major Swiss bank, it has a direct presence in the USA. That is rarely relevant in daily life, but it’s practical if you manage assets on both sides and want one bank with a footprint in both countries.
The basic offering is the free Key4 Pure package with a personal account, savings account, and debit card. Credit cards and additional services are bundled into paid packages.
Account opening must be done in person at a branch. English-language support is excellent. Both the mobile app and e-banking are fully available in English.
Zürcher Kantonalbank (ZKB)
ZKB is generally open to US persons with Swiss residency. However, there’s a hefty surcharge of CHF 90 per quarter, or CHF 360 per year.
This is particularly annoying because the regular ZKB Banking Package is otherwise free: up to 3 personal accounts, a savings account, and up to 2 Visa debit cards with no fees. As a US person, you’re paying CHF 360 a year for an account that everyone else gets for free.
There are exceptions: customers with an existing mortgage at ZKB are exempt. So if you’re planning to finance a property through ZKB, this becomes a viable option. Another catch: account opening is only available at ZKB’s headquarters in Zurich at Bahnhofstrasse 9, not at regular branches.
Where ZKB does excel is in English-language documentation. It offers the most comprehensive set of legal documents in English, including the General Terms and Conditions and the Conditions for Payment Services as downloadable PDFs. If full legal clarity in English matters to you, ZKB is the best choice.
Migros Bank
Migros Bank makes no official statement about accepting US persons. According to multiple user reports, US persons with Swiss residency have been able to open accounts there, and no additional fees have been reported.
The account offering is solid: free account management, an optional savings account, and a free Visa debit card.
Account opening must also be done in person here. The biggest disadvantage of Migros Bank is the limited English-language support. The e-banking app supports English for basic functions, but legal documents have historically not been available in English.
For US persons who speak German fluently and are already Migros customers, Migros Bank can be a viable solution. For everyone else, there are better options.
What Changes with FATCA in 2027?
Switzerland and the USA signed a new FATCA agreement on June 27, 2024. From around 2027, Switzerland is expected to switch from Model 2 to Model 1: Swiss banks will no longer report US-person data directly to the IRS. Instead, they’ll send it to the Swiss Federal Tax Administration (FTA), which forwards it — and Swiss authorities will receive reciprocal data on Swiss taxpayers in the US.
For you as an account holder, the reporting obligation itself doesn’t change. You still sign W-9, and the data still ends up at the IRS. What could change is the willingness of smaller banks: with a clearer reporting path through the FTA, more Swiss institutions may start onboarding US persons from 2027. Details at Swiss Banking.
Conclusion
As a US person in Switzerland, you definitely have options for a bank account, even if the selection is more limited than for other residents. My recommendation:
PostFinance is the best choice for most US persons. No additional fees, solid account models, and good English support make it the most straightforward option.
UBS is a good alternative, especially if you manage assets in both the USA and Switzerland or are already a customer.
ZKB is only worthwhile if you’re exempt from the fee (e.g., through a mortgage) or if English-language documentation is particularly important to you.
Migros Bank is an option for German-speaking US persons, but the limited English support makes it less attractive.
Frequently Asked Questions
Can a US citizen open a bank account in Switzerland?
Yes. PostFinance, UBS, and ZKB accept US persons with Swiss residency. Opening is always done in branch; you’ll need a passport, residence permit, US tax ID (SSN/TIN), and a signed Form W-9.
Which Swiss banks accept US persons?
Confirmed: PostFinance, UBS, and ZKB. Migros Bank also lets US persons open accounts based on user reports, but doesn’t say so officially. Many other cantonal banks and neo-banks either decline US persons or review them only on a case-by-case basis.
Do I have to disclose US citizenship if I’m also Swiss?
Yes. FATCA doesn’t care about your country of residence or your primary citizenship — it tracks US status. Dual citizens with a US passport must declare it when opening an account. The bank then reports the data to the IRS, regardless of how long you’ve lived in Switzerland.
Can a US person open a Swiss account online?
Not at any of the four banks compared here. All require in-person identification at a branch, because FATCA forms must additionally be signed and certified.
What happens if I don’t submit FATCA forms?
Without a signed W-9, the account is treated as “non-consenting”. The bank may report aggregate information to the IRS, hand over full details later via the formal administrative assistance procedure, and restrict or close the relationship. In practice, most Swiss banks simply refuse to open the account if FATCA documents are missing.
Which bank is cheapest for US persons in Switzerland?
With a balance of CHF 25,000 or more, PostFinance Smart Banking is effectively free. Below that threshold, UBS Key4 Pure with CHF 0 base fee is the cheapest option. ZKB is only worth it with the CHF 360 surcharge if you hold a ZKB mortgage.
Have you had experiences with Swiss banks as a US person? Share them in the comments, whether with one of the banks presented here or another. Your experience reports help other readers in the same situation.