Is Swiss Banking Secrecy Still Real? What Applies in 2026
The idea of a secret Swiss bank account that hides money from the tax office at home is out of date. A criminal secrecy rule for bank staff still exists, and a Swiss bank does not hand client data to anyone who asks. But since 2018, Swiss banks have reported account information to the Federal Tax Administration (FTA), which forwards it to the tax authorities of partner states.
This guide separates what ended from what still applies, with the Swiss source for each point, as of 19 October 2026.
· 7 min read
The short version
- Swiss law still punishes bank staff who reveal client secrets: up to three years in prison or a fine, and up to five years if they gain a financial advantage (Art. 47 Banking Act).
- That rule reserves federal and cantonal duties to testify and to give information to authorities (Art. 47, paragraph 5).
- Switzerland has exchanged financial account information automatically with partner states since 2018. The legal basis entered into force on 1 January 2017.
- The FTA says the data includes all types of investment income and the account balance, and that it forwards the data to the foreign tax authorities concerned.
- The State Secretariat for International Finance (SIF) keeps the list of partner states. More than 100 states and territories have adopted the standard.
- So the secret account is a myth in 2026, while professional secrecy at the bank is real.
In this guide
1. What Swiss law still says: Article 47 of the Banking Act
Article 47 of the Banking Act (BankG) is the rule people mean when they talk about Swiss banking secrecy. It is a criminal-law provision. It covers members of a bank's governing bodies, employees, agents and liquidators, and the governing bodies and employees of an audit firm (Fedlex, Art. 47 BankG).
| Provision | What it says |
|---|---|
| Paragraph 1(a) | Anyone who deliberately reveals a secret that was entrusted to them, or that they noticed, in that role commits an offence. |
| Paragraph 1(b) and (c) | Trying to induce a breach is covered, and so is passing on or using a secret that was disclosed in this way. Letter (c) has applied since 1 July 2015. |
| Paragraph 1 | Penalty: imprisonment of up to three years or a fine. |
| Paragraph 1bis | Up to five years' imprisonment or a fine if the person gains a financial advantage for themselves or someone else. |
| Paragraph 2 | Acting negligently: a fine of up to CHF 250,000. |
| Paragraph 4 | The offence still applies after the person has left the job or profession. |
| Paragraph 5 | Federal and cantonal rules on the duty to testify and to give information to an authority remain reserved. |
| Paragraph 6 | The cantons prosecute and judge these offences. |
In plain terms, this is a professional secrecy duty for the people who work for or audit a bank. Paragraph 5 matters most for this article. The secrecy rule does not override a duty to testify or to inform an authority where federal or cantonal law sets one.
2. What ended: automatic exchange of account information
The turning point is the automatic exchange of information (AEOI) in tax matters. The Federal Act on the International Automatic Exchange of Information in Tax Matters (AEOIA, in German AIAG) regulates how Switzerland carries it out with partner states. Article 1 names the Multilateral Competent Authority Agreement of 29 October 2014 on financial accounts as the main basis. Since 1 January 2026 the act also covers crypto-assets under the agreement of 8 June 2023 (Fedlex, Art. 1 AEOIA).
SIF says the legal basis entered into force on 1 January 2017 (SIF). The Federal Tax Administration says the first data exchange took place in 2018. Banks, collective investment vehicles and insurance companies collect the information, and the FTA forwards it to the relevant foreign tax authorities. The FTA states that the information includes all types of investment income and the account balance (FTA).
Which countries take part?
SIF publishes the list of partner states, keeps it up to date, and says it has priority over the OECD list. Apart from Switzerland, more than 100 states and territories have adopted the standard (SIF page, status 8 October 2026). The list has footnotes for jurisdictions that supply data but do not receive it, either permanently or temporarily until they meet confidentiality and data safeguard requirements. We give no count of partner states here, because the page does not state one. Check the list for the country you care about.
A second channel: exchange on request
For individual cases there is another route. The Federal Department of Finance (EFD) says the rules on exchange upon request are set out in bilateral double taxation agreements, and that the corresponding OECD standard is decisive (EFD).
The latest update
On 24 June 2026 the Federal Council adopted a dispatch on a protocol that amends the Switzerland-EU agreement on the automatic exchange of information, to align it with the revised OECD standard (EFD).
3. Myths and facts
| The claim | What the sources say |
|---|---|
| Swiss banks never share client data with foreign authorities. | Account information is reported through the FTA to partner states' tax authorities, and the first exchange took place in 2018 (FTA, SIF). |
| A Swiss account is invisible to the tax office of the country where you live. | The FTA forwards the data to the foreign tax authorities concerned. Whether your country is a partner is shown on the SIF list. |
| Swiss law no longer protects bank client secrets. | Revealing them is still a crime for bank staff, with up to three years in prison or a fine (Art. 47 BankG). |
| Banking secrecy protects a client against every authority. | Paragraph 5 reserves federal and cantonal duties to testify and to give information to an authority (Art. 47 BankG). |
| Swiss banks open accounts without checking who you are. | A financial intermediary must identify the contracting party with a document that has evidentiary value when it starts a business relationship (Art. 3 GwG). |
| Switzerland stopped being a wealth management centre when secrecy changed. | Assets managed by banks in Switzerland reached a record CHF 9,729.1 bn in 2025, up 4.8%, and the assets of foreign-domiciled customers grew by CHF 241.7 bn (SBA Banking Barometer 2026). |
4. What it means if you live in Switzerland or are moving here
Three points follow from the sources.
- Expect identification. A Swiss bank has to identify you with a document when you open an account (Art. 3 GwG). Our bank account guide lists the documents.
- Expect reporting. Banks report under the standard. The exchange runs between Switzerland and a partner state (Art. 1 AEOIA), so on our reading information about accounts held abroad can also reach Swiss authorities, depending on the partner state. The sources we read do not describe that direction in detail, so ask a tax adviser about your case.
- Do not rely on secrecy for tax. Your tax residence decides what you declare and to whom. That is a question for your cantonal tax office or an adviser, not for the bank. See our Swiss tax guide for expats.
5. What the numbers say about Swiss wealth management
The sources do not explain why customers stay, so we do not guess. They show the outcome. Assets under management at banks in Switzerland rose 4.8% to a record CHF 9,729.1 bn in 2025, and both domestic and foreign-domiciled customers saw their assets grow. The Swiss Bankers Association (SBA) says this shows the continued appeal of the Swiss banking centre in cross-border wealth management (SBA Banking Barometer 2026). How the banks themselves are organised is in our guide to how Swiss banks work.
FAQ
Is Swiss banking secrecy still law?
Yes, in one form. Article 47 of the Banking Act makes it a crime for bank staff and auditors to reveal client secrets, with up to three years in prison or a fine. It does not stop the automatic exchange of account information with partner states, and paragraph 5 keeps federal and cantonal duties to testify and to inform authorities.
Does Switzerland share bank account information with other countries?
Yes. Switzerland has exchanged financial account information automatically with partner states since 2018. The Federal Tax Administration forwards the data collected by banks, collective investment vehicles and insurance companies to the relevant foreign tax authorities. The partner list is on the SIF website.
What information is exchanged?
The Federal Tax Administration says it includes all types of investment income and the account balance. The sources we read do not list every data field, so check the standard or ask a tax adviser about your case.
Can a Swiss bank tell my home tax office about my account?
If your country is a partner state, account information is forwarded to its tax authorities under the automatic exchange. The SIF list shows whether your country is a partner. Exchange on request is a separate channel, set out in double taxation agreements.
Is it illegal for a bank employee to leak client data?
Yes, in general. Article 47 of the Banking Act punishes deliberate disclosure with up to three years in prison or a fine, and up to five years if the person gains a financial advantage. Negligent disclosure can lead to a fine of up to CHF 250,000. The offence still applies after the person leaves the job.
Does a Swiss bank check my identity?
Yes. Under Article 3 of the Money Laundering Act, a financial intermediary must identify the contracting party with a document that has evidentiary value when it starts a business relationship.
Related guides
- Fedlex: Banking Act, Art. 47 (professional secrecy)
- Fedlex: AEOIA (AIAG), Art. 1
- Fedlex: Money Laundering Act, Art. 3 (identification)
- SIF: automatic exchange of information on financial accounts
- Federal Tax Administration: automatic exchange of information
- EFD: exchange of tax-related information
- SBA: Banking Barometer 2026