Swiss Bank Inheritance: What Foreign Heirs Actually Face

Swiss bank inheritance doesn’t begin with a meeting or a letter. It begins with a freeze. The moment a Swiss bank learns that an account holder has died — usually when a family member submits an official death certificate — every account, every custody position, every standing order, and every safe deposit box is immediately locked. Nothing moves until all heirs are identified, authenticated, and have agreed in writing. That is where most families discover how different the Swiss system is from what they expected.

What surprises people isn’t that the freeze happens — it’s how long it lasts, how much documentation it demands, and how many things can bring the entire process to a halt. Foreign heirs specifically face layers the original account holder never had to think about: documents from two or three legal systems, authentication requirements that can take months, and tax deadlines running in the background that don’t pause for disputed estates. This guide covers the complete picture — including the things most inheritance guides don’t reach.

What the Bank Does From the Moment It Learns of the Death

The sequence is standard across Swiss private banks and is not negotiable. On receiving formal notification — typically an official death certificate submitted in writing — the bank freezes all accounts in the deceased’s name. Cards and e-banking access are blocked. Standing orders and direct debits are suspended. Any safe deposit box is sealed and physically inaccessible until heirs attend in person or provide documented authorization from all other heirs.

Powers of attorney held by third parties do not automatically expire under Swiss law upon a client’s death — that’s a common misconception. However, once the bank is notified, it restricts any POA use and typically declines to execute instructions from an attorney-in-fact pending full heir legitimization. Any single legal heir can also revoke an existing POA unilaterally, which triggers an immediate additional freeze even if the bank was otherwise prepared to proceed. Relying on a pre-existing POA as a route to quick post-death access almost never works the way people expect.

One element of the bank’s response that surprises most heirs: if the deceased held a discretionary portfolio management mandate, the bank technically retains management authority under the mandate agreement — but most Swiss private banks suspend active trading and hold positions unchanged while awaiting heir instructions. The portfolio sits exposed to market movements during what can be a six-to-eighteen-month process. If the mandate terms allow the bank to rebalance to protect client interests, some banks exercise limited defensive measures. Most don’t. This is worth raising explicitly in the first communication with the relationship manager.

Which Law Governs a Swiss Bank Inheritance — and How 2025 Changed the Answer

Switzerland’s answer to “which country’s inheritance law applies?” runs through the Private International Law Act (PILA). The central rule is straightforward: the law and authorities of the deceased’s last domicile govern the estate. If the deceased was last domiciled in Switzerland, Swiss law and Swiss authorities apply. If the deceased was domiciled abroad, the foreign country’s authorities and its conflict-of-law rules typically govern — with the Swiss bank then taking instructions from whatever authority that system produces.

The revised PILA, which entered force on January 1, 2025, introduced several changes that matter for international estates. Under the previous rules, a Swiss national living abroad who chose Swiss law as applicable to their estate automatically brought Swiss jurisdiction along with it — meaning Swiss authorities would handle the probate. The 2025 revision separates those two things. A Swiss national abroad can now choose Swiss law to govern their succession while simultaneously designating the authorities of their country of residence to administer it. This reduces jurisdictional conflict, particularly for Swiss nationals resident in EU countries where the EU Succession Regulation applies.

Swiss dual nationals gain similar flexibility: they can elect the inheritance law of any country whose nationality they hold. The catch — and it matters — is that Swiss forced heirship rules (the compulsory portion system) cannot be set aside. Even if a dual national chooses German or French law to govern their estate, the Swiss compulsory portions still apply. This is not a gap in the 2025 revision; it’s a deliberate preservation of a core Swiss inheritance principle that the Swiss Federal Parliament has consistently maintained.

The 2025 revision also updated the renvoi rule — what happens when a foreign country’s private international law refers back to Swiss law. Previously, this created circular complexity. Now, where a foreign country refers back to Switzerland, the revised PILA declares the substantive inheritance law of the foreign country of domicile to be applicable. This eliminates one of the most common sources of jurisdictional gridlock in cross-border Swiss estates.

One boundary condition the revised PILA preserves: Swiss authorities can and will intervene to protect Swiss-located assets even when a foreign country is the primary jurisdiction, if the foreign authorities fail to deal with those Swiss assets. The Swiss bank is not passive in this. If a foreign probate order doesn’t address the Swiss account, the bank awaits resolution through Swiss channels.

The 2023 Domestic Reform — Compulsory Portions, Patchwork Families, and Pillar 3a

If Swiss domestic law governs the estate — because the deceased was last domiciled in Switzerland — the revised Swiss inheritance law in force since January 1, 2023 applies to all deaths occurring on or after that date, even if the will was drafted before 2023. The changes are significant enough that existing wills may distribute more or less than the testator intended under the old rules.

The two most consequential changes: first, the compulsory portion for children was reduced from three-quarters to one-half of their statutory inheritance share. A testator with a surviving spouse and two children can now leave up to half the estate entirely freely — to the other spouse, a cohabiting partner, a charity, or anyone else. Before 2023, the freely disposable portion in that same constellation was only three-eighths. Second, the compulsory portion for parents was abolished entirely. Before 2023, parents of a childless deceased were entitled to a guaranteed portion. Now, a childless person can leave their entire estate to whoever they choose — their cohabiting partner, a sibling, a foundation — without parents having any legal claim.

The compulsory portion for a surviving spouse or registered partner remains unchanged at one-half of their statutory inheritance share. And cohabiting partners — regardless of how long the relationship lasted — still have no automatic inheritance rights under Swiss law. Without a will or an inheritance contract specifically providing for them, a cohabiting partner inherits nothing. This remains one of the most common and preventable surprises in Swiss estate planning.

Pillar 3a assets — Swiss restricted pension savings held in a bank foundation or through an insurance product — sit entirely outside the estate. They pass directly to designated beneficiaries according to the statutory beneficiary order under Swiss law: (1) surviving spouse or registered partner, (2) direct descendants, (3) then parents, siblings, and other legal heirs. The 2023 reform clarified that this applies equally to bank-held pillar 3a assets, not just insurance-held ones. Critically, pillar 3a assets are not subject to the unanimity rule. The bank releases them directly to the designated beneficiary without needing instructions from the entire heir community. However — and this is often missed — the pillar 3a capital does count toward the compulsory portion calculation when determining whether other heirs’ forced shares have been satisfied. The structure is outside the estate; the value is not invisible to it.

Step by Step: From Death Notification to Asset Release

Document Requirements — Where Most Foreign Claims Break Down

Swiss banks approach heir documentation with more scrutiny than most families expect. The compliance environment — driven by FINMA oversight, AEOI reporting obligations, and AML requirements — means banks carry regulatory risk if they release assets to the wrong person. That makes them conservative, sometimes to a fault. Understanding exactly what they need, and in what form, is the single most effective way to shorten the process.

A note on the European Certificate of Succession: since the 2025 PILA revision aligned Swiss private international law more closely with the EU Succession Regulation, a European Certificate of Succession issued by an EU member state authority carries stronger weight in Switzerland than it did before. In straightforward cases where the deceased was last domiciled in an EU country and the ECS clearly identifies all heirs, Swiss banks are increasingly treating it as sufficient without requiring a separate Swiss Erbenschein. This is a meaningful practical improvement for EU-based heirs — though individual banks retain discretion, and complex estates may still require supplementary Swiss documentation.

One category of foreign documents that Swiss banks and courts actively reject: inheritance distributions based on foreign law that conflicts with Swiss public policy. Distributions that discriminate between heirs on the basis of gender or religion are incompatible with Swiss constitutional principles. Swiss courts have held that inheritance documents assigning unequal shares based on gender alone cannot be enforced in Switzerland. For heirs from jurisdictions where customary or religious inheritance law applies, this can be a significant complication — and a reason to address it through legal advice before submitting documentation.

Five Things Most Swiss Bank Inheritance Guides Don’t Tell You

The standard information about Swiss bank inheritance is correct. It’s also incomplete. Here are five specifics that almost never appear in general guides but matter significantly in practice.

The Three-Year Withholding Tax Deadline Is Absolute

Switzerland’s 35% withholding tax (Verrechnungssteuer) is deducted at source on Swiss-source dividends and interest. Foreign heirs entitled to a partial refund under a Double Taxation Agreement (DTA) between Switzerland and their country of residence must file a refund claim with the Swiss Federal Tax Administration (SFTA) within three years from the end of the calendar year in which the income became due. Income that became due in 2023 must be reclaimed by December 31, 2026. There is no extension for estates still in probate. There is no exception for contested inheritances. The deadline is statutory and the SFTA enforces it without discretion.

In practice, this means heirs in disputed estates who are focused on the inheritance conflict itself often miss the withholding tax window entirely. Each heir must file individually for their share of the refund using SFTA forms specific to their country of residence. The applicable treaty rate (often 15%, 10%, or 0% depending on the treaty) determines how much of the 35% is reclaimable. If the country of residence has no DTA with Switzerland, no refund is available. The practical step: check the three-year deadline early, regardless of the estate’s legal status.

Safe Deposit Boxes Are Handled Entirely Separately

A safe deposit box is not an account and is not subject to the same process. The bank seals it immediately on death notification — access requires all heirs to attend in person, or for one heir to present duly authorized documentation from all others. The contents are inventoried in the presence of the attending heir(s). Banks are not responsible for the contents prior to that inventory — they don’t know what’s inside, and neither does the tax authority. There is no mechanism for heirs to claim specific items they “believe” were there but are not found; the inventory at opening creates the legal record. Given this, heirs should bring any knowledge of expected contents to the attention of their Swiss legal adviser before the inventory takes place, not after.

Undeclared Assets Create Legal Exposure for the Heir, Not Just the Estate

Undeclared assets held in Swiss accounts — capital that was never reported to the home country’s tax authority — create a specific risk when inherited. Under the Automatic Exchange of Information (AEOI) framework, which Switzerland has implemented with over 100 jurisdictions, Swiss banks already report account information to foreign tax authorities annually. An heir who accepts an inheritance from an account that the home country’s tax authority already has data on — and hasn’t previously disclosed — is accepting tax liability along with the capital.

The practical path, if undeclared assets are suspected: voluntary disclosure in the heir’s home country before accepting the inheritance. Most jurisdictions with AEOI agreements have reduced-penalty voluntary disclosure programs. Acting before the tax authority makes contact is consistently better — materially better in terms of penalties and sometimes legally different in terms of criminal exposure — than waiting. Swiss banks are themselves required to flag compliance concerns and may decline to transfer assets to foreign accounts where the tax status of those assets is unresolved. Getting ahead of this with specialist advice, before submitting inheritance documentation to the bank, is the correct sequence.

The Unanimity Rule Has a Workaround — But It Requires Planning in Advance

Swiss banks require unanimous instructions from all legally recognized heirs before distributing assets. A single heir who disagrees, can’t be located, or simply doesn’t respond can freeze the entire estate. The workaround isn’t quick: it requires either a Swiss court order appointing an estate administrator with binding authority, or — far better — a Willensvollstrecker (executor) named in the will. An executor appointed under Swiss law has the authority to instruct the bank without requiring all heirs to sign jointly. This is one of the most valuable estate planning tools available to Swiss account holders with multiple heirs across different jurisdictions, and one of the least used. If the account holder is still alive and reading this, the most effective protection they can give their heirs is a clearly drafted will with a named Swiss executor.

Pillar 3a Is Separate — But Still Counts for Compulsory Portion Purposes

Swiss pillar 3a (restricted pension savings) passes directly to designated beneficiaries outside the estate — it’s not subject to the bank’s heir unanimity requirement and is released separately. But here’s the nuance most guides skip: the value of pillar 3a assets does count when calculating whether other heirs’ compulsory portions have been satisfied. If a deceased left CHF 200,000 in pillar 3a to their spouse and CHF 300,000 in investment assets to the estate, the children’s compulsory portion calculation includes both. The pillar 3a is outside the estate structurally; it is not invisible to the compulsory portion math. Heirs who believe they’ve been shortchanged on their compulsory share should factor this in when reviewing the estate composition.

Swiss Inheritance Tax — What Foreign Heirs Usually Don’t Owe

Switzerland levies no federal inheritance tax. Tax on inheritances is exclusively cantonal — and the landscape is more favourable than most foreign heirs expect, particularly for movable assets like bank accounts and securities.

The key principle for foreign heirs: if the deceased was not domiciled in Switzerland, Swiss cantonal inheritance tax generally does not apply to movable assets. Bank account balances, securities portfolios, and cash holdings of a foreign-domiciled deceased are typically taxed — if at all — by the authorities of the deceased’s country of last domicile or the heir’s country of residence, not by Swiss cantons. The deceased’s Swiss bank account does not create a Swiss cantonal inheritance tax liability for a foreign heir when the account holder lived abroad.

Swiss real estate is different. If the deceased owned property in Switzerland, that specific asset is subject to cantonal inheritance tax in the canton where the property is located — regardless of the deceased’s domicile. This applies even to foreign-domiciled deceased. The movable/immovable distinction matters.

Where Swiss cantonal inheritance tax does apply — for Swiss-domiciled deceased, or for Swiss real estate — the practical situation is better than headlines suggest. Spouses and registered partners are exempt from inheritance tax in all Swiss cantons. Direct descendants (children, grandchildren) are exempt in almost all cantons — only Appenzell Innerrhoden, Neuchâtel, and Vaud levy inheritance tax on direct descendants, and even there rates are low. The cantons of Obwalden and Schwyz impose no cantonal inheritance tax at all. For more distant relatives or unrelated heirs, rates vary considerably — up to 50% in some cantons for unrelated persons inheriting from Swiss-domiciled deceased.

Double Taxation Agreements between Switzerland and the heir’s home country can further reduce tax liability. Several DTAs covering inheritance taxes exist — but they’re a distinct category from income or capital gains DTAs, and fewer countries have them with Switzerland. The Swiss Federal Tax Administration publishes the current list of Swiss inheritance tax DTAs. Verifying whether one applies should be an early step in any international estate.

Dormant Accounts and the dormantaccounts.ch System

If you believe a deceased relative held a Swiss bank account but can’t identify the institution — or aren’t even certain the account exists — Switzerland has a structured system for this. The Swiss Banking Ombudsman maintains a centralized database of all assets classified as “without contact” — accounts where the bank has had no customer-initiated contact for ten or more years. This database covers assets across all Swiss banks, including those not yet at the 60-year publication threshold.

Submitting a search request to the Banking Ombudsman requires documented proof of your potential entitlement — a death certificate and proof of your relationship to the deceased at minimum. The Ombudsman does not simply take your word for it, but the evidentiary bar is lower than the full bank documentation process. The service is free for claimants. If the search identifies a match, the Ombudsman contacts the relevant bank, which then conducts its own final verification before engaging with you directly.

Assets that have been without customer contact for 60 years must by law be published publicly on dormantaccounts.ch — provided they exceed CHF 500 in value. The publication lists the account holder’s name, date of birth, nationality, and last known address where available. Once published, a one-year claim window opens (or five years for accounts dormant since before 1955). If no legitimate claim is made within that window, the bank transfers the assets to the Swiss federal government and all claim rights expire permanently.

One important detail: the dormantaccounts.ch publication timeline is separate from the Banking Ombudsman search. You don’t need to wait 60 years to search. The Ombudsman’s database is accessible from day one of suspecting an account may exist. The 60-year threshold is only when the bank is legally required to publish publicly — not when heirs can begin searching.

What Swiss Account Holders Can Do Now to Protect Their Heirs Later

Most content on Swiss bank inheritance is written for people in the middle of a process they can’t change. This section is for account holders who still have time to structure things differently. The choices made before death determine whether the inheritance takes four months or four years.

Draft a Swiss will or inheritance contract with a named executor. An executor (Willensvollstrecker) can instruct the bank independently without requiring all heirs to sign in unison. For estates with multiple heirs across different countries, this is the single most effective intervention available. The executor should ideally be a Swiss-based lawyer or trusted Swiss professional who can act locally without needing international coordination on every step.

Exercise choice of law under the revised PILA. If you’re a foreign national domiciled in Switzerland, you can designate your home country’s inheritance law to apply — simplifying the legal framework for heirs in that jurisdiction. If you’re a Swiss national domiciled abroad, you can choose Swiss law or the law of any nationality you hold, and now separately designate whether Swiss or foreign authorities administer it. These choices belong in the will.

Designate pillar 3a beneficiaries explicitly. The statutory beneficiary order applies by default, but an explicit designation on file with the bank foundation or insurance provider removes ambiguity and avoids disputes. This is a two-page form that takes fifteen minutes and can save months of confusion.

Tell your heirs where to find the accounts. This sounds obvious but is genuinely the most common reason estates spend months searching for Swiss assets: the account holder didn’t leave a record. A brief document listing the bank name, account number, and the name of the relationship manager — held with a trusted family member or adviser — eliminates this entirely.

Ensure your Swiss assets are declared in your home country. If you’re a non-resident account holder, your heirs will deal with both the Swiss bank and your home country’s tax authority. Under AEOI, the Swiss bank already reports your account balance annually. An undisclosed account is an inheritance risk, not a private arrangement. Addressing compliance now is a kindness to the people who will inherit — who will otherwise face that problem in the worst possible circumstances.

How Long Does a Swiss Bank Inheritance Actually Take?

The range is wide enough that “it depends” isn’t just a hedge — it’s the honest answer. A single heir, documents from one jurisdiction, no tax compliance issues, and an uncontested estate can be resolved in three to six months. A contested estate with heirs in six countries, documents requiring dual apostilles, and undeclared assets requiring voluntary disclosure in two jurisdictions has taken four years in cases we’ve seen. Here’s a realistic picture of what drives the timeline.

The single most time-variable element isn’t legal complexity — it’s heir coordination. Estates with heirs who communicate, agree on a representative, and move together through document collection consistently land at the lower end of each range. Estates where heirs are in communication conflict, or where heirs in different jurisdictions are waiting for each other to act, consistently land at the upper end or beyond it. Designating a lead contact person — ideally backed by a durable power of attorney from the other heirs — and deciding on a Swiss legal adviser as a single point of contact both compress the timeline significantly.

For the tax side, remember that the Swiss withholding tax refund deadline runs on its own calendar regardless of where the estate itself stands. Start the withholding tax refund process as soon as possible after the estate’s document requirements are understood — don’t wait for full asset distribution before filing. The Swiss Federal Tax Administration processes refund claims independently from the bank’s estate administration. You can file for withheld tax while the broader estate is still in process, using documentation of your heirship share and your treaty-country residency.

For those considering establishing or maintaining a Swiss banking relationship, the inheritance process is worth factoring into account structure from the start. How accounts are titled, what instructions are on file, and whether an executor is named all matter — and addressing them takes far less effort before a death than after one.