How to Merge or Split a Swiss Foundation (2026): Step‑by‑step Process, Supervisory Approvals & Tax Consequences

Foundation merger Switzerland projects are rising sharply in 2026 as boards, family offices and advisers respond to succession pressures, cross‑border simplification and heightened supervisory and tax scrutiny. Whether you are consolidating two charitable foundations, spinning off a distinct programme into a new entity, or restructuring to improve governance, the legal process is governed principally by the Swiss Civil Code and, where a merger or transfer of assets and liabilities is involved, by the Federal Merger Act, with oversight by cantonal or federal supervisory authorities. This guide delivers a practical, step‑by‑step roadmap, eligibility tests, numbered procedural stages, required documents, realistic timelines, costs in CHF, and the tax consequences that most often derail a restructuring.

It is written for decision‑makers who need operational clarity rather than abstract doctrine.

Overview, when and why to merge or split a foundation

A foundation merger in Switzerland, sometimes called an amalgamation, combines two or more foundations into a single continuing entity, pooling assets, governance and purpose. A split (division or spin‑off) does the reverse: it separates a foundation into two or more entities, allocating assets, activities and beneficiaries between them. The merger of foundations is regulated by the Federal Act on Merger, Demerger, Conversion and Transfer of Assets and Liabilities (the Merger Act / Fusionsgesetz, FusG), read together with the foundation provisions of the Swiss Civil Code (Articles 80–89a) and supervised by the competent cantonal or federal authority.

It is important to note at the outset that the Merger Act permits foundations to merge, but it does not provide a general statutory mechanism for the demerger (split) of foundations in the way it does for companies. In practice, a foundation “split” is therefore usually achieved through a transfer of assets and liabilities to a newly established or existing foundation, combined with a purpose or organisational amendment of the original foundation under the Civil Code, all subject to supervisory approval. This distinction matters for structuring and should be clarified with counsel before you begin.

Boards pursue these transactions for several recurring reasons:

• Succession and simplification. Family and legacy structures accumulate over decades. A merger reduces duplicated boards, audits and administration.
• Governance efficiency. Consolidating overlapping purposes under one board clarifies accountability and reduces conflicts.
• Asset centralisation. Pooling endowments can lower investment costs and improve grant‑making scale.
• Activity spin‑off. A separation lets a foundation isolate a distinct programme, risk profile or jurisdiction into its own vehicle.
• Tax efficiency. Rationalising structures can preserve tax‑exempt status while cutting compliance overhead, though tax continuity must be verified in advance.

The central decision is directional. If your goal is to consolidate, a foundation merger Switzerland route under the Merger Act applies. If your goal is to separate functions, assets or beneficiary classes, a transfer‑of‑assets or new‑entity route combined with a Civil Code amendment is appropriate. In both cases, the original foundation purpose remains the decisive legal constraint: supervisory authorities will not approve a restructuring that defeats or materially alters the founder’s intent without clear statutory authority. That purpose‑preservation principle, anchored in the Civil Code, shapes every subsequent step.

Eligibility, legal prerequisites for a foundation merger Switzerland transaction

Under the Swiss Civil Code (Articles 80 and following), a foundation is an endowment of assets dedicated to a specific purpose, administered by a board and overseen by a supervisory authority. The Merger Act additionally provides that foundations may merge only where this is objectively justified and, in particular, serves the maintenance and safeguarding of the pursuit of their purposes. Before committing resources, the board should test eligibility against the following requirements.

• Purpose compatibility. The merging foundations must have purposes that can lawfully be combined without defeating the original dedication of assets. Under the Merger Act, a merger must be objectively justified and preserve the pursuit of purposes. Charitable foundations generally merge most cleanly where purposes are closely aligned.
• Statutory authority. The foundation’s own statutes (charter) must not prohibit restructuring. Where the deed is silent, the Civil Code, the Merger Act and supervisory practice govern; where it restricts amendments, additional steps or consents may be required.
• Asset dedication and earmarking. Assets given for a specific sub‑purpose may be “earmarked” and cannot be freely reallocated. A separation in particular must respect any ring‑fencing imposed by the founder or by conditional gifts.
• Beneficiary and creditor protection. The Merger Act contains specific creditor‑protection provisions. Where identifiable beneficiaries hold enforceable expectations, or where creditors could be prejudiced, their rights must be protected and, in some cases, their consent obtained.

When statutes prohibit or restrict restructurings

Not every foundation can be merged or separated simply because the board wishes it. Several situations constrain the transaction:

• Express prohibitions. Some charters forbid merger, dissolution or amendment outright. In those cases, the board cannot proceed on resolution alone and may need to apply to the supervisory authority, or, exceptionally, a court, for a purpose or organisational amendment under the Civil Code provisions governing changes to foundations (Articles 85 to 86b).
• Earmarked endowments. Where a donor gave assets on condition they serve a named programme, those assets cannot be redirected through a merger that dilutes the condition. A separation may be the only lawful route to honour the restriction.
• Reserved founder rights. Under Article 86a of the Civil Code, a founder may reserve the right to apply for a change of purpose, subject to statutory conditions; those rights, and any limitations on them, must be respected.
• Contested beneficiary expectations. Where beneficiaries dispute a restructuring, supervisory review intensifies and judicial involvement becomes more likely.

The practical takeaway: read the charter first. A foundation merger Switzerland project built on an unexamined deed risks rejection at the supervisory stage after significant cost. Treat the eligibility review as a gating exercise before any external spend.

Step‑by‑step process for a foundation merger or split

The following eight steps map the full lifecycle of a merger or separation. Steps 1 to 6 answer the common question of how two foundations are legally merged; Steps 7 and 8 complete the financial and registration work. Each step identifies the accountable owner and a realistic duration. Treat the ranges as planning guidance; cantonal practice and transaction complexity drive the actual timetable.

1. Initial board resolution and mandate. The board (or trustees) formally resolves to explore the merger or separation, appoints a project lead, and mandates legal counsel and a tax adviser. The resolution should record the strategic rationale and confirm that the charter permits the restructuring, or identify the amendment route required.
2. Due diligence and valuation. Counsel, the tax adviser and an external valuer or auditor review each foundation’s assets, liabilities, contracts, purposes, beneficiary obligations and tax status. Significant assets, real estate, holdings, art, participations, are valued with a disclosed methodology. This stage surfaces earmarked funds, creditor exposure and any cross‑border complications.
3. Draft the merger agreement, merger report and new statutes. Counsel prepares the merger agreement (or, for a separation, the transfer agreement and division plan), setting out asset allocation, beneficiary treatment, the governance of the continuing or successor foundation, and the effective date. Under the Merger Act a merger agreement in writing and, where required, a merger report are prepared; draft statutes for the surviving or new entity are prepared in parallel. The Merger Act also requires an audit of the merger by a licensed audit expert in most cases.
4. Beneficiary and third‑party notices and consents. Where statutes, creditor positions or beneficiary rights require it, the board issues notices and obtains consents or waivers. In a separation, this step is especially sensitive because beneficiaries must be able to see how their rights are preserved across the resulting entities.
5. Supervisory authority application and review. The board submits the agreement, new statutes, financials, valuations and supporting evidence to the competent cantonal or federal foundation supervisory authority. Under the Merger Act, a foundation merger requires approval by the supervisory authority, which reviews whether the restructuring respects the original purpose, protects beneficiaries and creditors, and complies with the law. It may request amendments before approving.
6. Notarial formalities and registration. On approval, required notarial deeds are executed and any entries in the commercial register are made or amended. Foundations entered in the register must reflect the merger, the new statutes, and governance changes. For foundations entered in the commercial register, the merger takes legal effect upon registration.
7. Asset transfers, accounting and tax filings. The finance team and tax adviser effect the asset transfers, update the accounts, and make any necessary tax filings. Transfers should track the approved allocation precisely to avoid mismatches between the legal plan and the accounting reality.
8. Post‑merger registration and governance changes. Final registry updates, board appointments, signatory changes and supervisory notifications are completed. The continuing or successor foundation begins operating under its new statutes.

Step / Who / Duration timeline

Sample merger clause checklist

A well‑drafted merger or transfer agreement should address, at minimum:

• Effective date and conditions precedent, including supervisory approval.
• Asset and liability allocation, itemised, with treatment of earmarked funds.
• Beneficiary provisions, how rights and expectations transfer or are preserved.
• Purpose statement, confirming continuity of the original dedication.
• Governance, board composition, signatory powers and transitional arrangements.
• Tax representations, confirming the intended treatment and any ruling obtained.
• Termination and fallback, what happens if approval is refused.

Merger vs separation, quick comparison

Required documents for a foundation merger or split

Supervisory authorities expect a complete, well‑organised file. Missing or inconsistent documents are the most common cause of delay. The table below lists the core documents and who issues them. Notarisation is required for certain deeds; translations into the supervisory authority’s official language must usually be certified; and financial statements typically require external audit.

Document checklist for tax‑exempt foundations

Charitable, tax‑exempt foundations face an additional evidentiary burden. In addition to the documents above, assemble: the existing tax‑exemption decision; evidence that the exempt purpose continues unchanged after the merger or separation; confirmation that no impermissible private benefit arises from the reallocation; and, where available, an advance ruling from the competent cantonal tax authority confirming that exempt status survives the transaction. Supervisory and tax authorities review these together, so align the legal file and the tax file before filing.

Timeline and deadlines

A domestic foundation merger Switzerland transaction typically completes in three to nine months. Simpler consolidations of closely aligned charitable foundations, with clean deeds and no beneficiary disputes, sit at the lower end. Complex or cross‑border restructurings, those requiring beneficiary consents, extensive valuations, or a transfer of seat, commonly run nine to eighteen months.

The supervisory review (Step 5) is usually the critical‑path item, taking roughly eight to twenty weeks depending on the canton and the quality of the submission. Authorities set their own processing times and may pause the clock while they request further documents. Two practical rules shorten the timetable: file a complete, internally consistent application the first time, and engage the supervisory authority informally before formal submission where cantonal practice permits, so that likely objections surface early.

Fast‑track situations, a straightforward merger of two small, purpose‑aligned foundations, can move within the three‑to‑six‑month band. Complex cases involving earmarked assets, contested beneficiary rights, real‑estate transfers or a change of seat under private international law should be planned on a nine‑to‑eighteen‑month horizon, with contingency for a second supervisory review round.

Costs and fees

Budgeting should capture professional fees, authority charges and incidental costs. The ranges below are indicative of typical Swiss market levels and vary considerably; complex or cross‑border matters push toward the upper end. In almost all cases the foundation bears the cost from its assets, subject to the board’s fiduciary duty to incur only expenses that serve the foundation’s purpose. Confirm current fee schedules with the relevant canton and service providers, as these change over time.

Cantonal variability is significant. Supervisory fees and notary tariffs differ across cantons, and a transaction touching more than one canton may attract multiple filings. Build a contingency of around 15–20% for second review rounds and unforeseen valuation or translation work.

Tax consequences of a foundation merger or split, domestic and cross‑border

Tax is where otherwise sound restructurings most often come unstuck. The tax consequences of a foundation merger in Switzerland turn on whether the transaction preserves the elements that justified the original tax treatment, chiefly the exempt purpose and the absence of impermissible private benefit. Tax‑exemption for charitable foundations is granted by the competent cantonal tax authority (covering both cantonal/communal and federal direct tax), so engage that authority, and, where relevant, the Federal Tax Administration (FTA), early, and obtain an advance ruling wherever available.

• Continuity of tax‑exempt status. A charitable foundation’s exemption depends on an exclusive and irrevocable dedication of assets to a public‑benefit purpose. A merger that keeps the purpose intact usually preserves exemption; one that broadens, dilutes or commercialises the purpose can jeopardise it. A separation that reallocates assets must demonstrate that each successor entity still meets the exemption criteria.
• Taxable disposals. Transferring assets between entities can, in principle, be treated as a realisation event. Where both entities are tax‑exempt and the transfer serves the shared purpose, relief or neutrality is often available, but this should be confirmed by ruling rather than assumed.
• Transfer and real‑estate taxes. Certain transfers, notably real estate, may attract cantonal real‑estate transfer or gains taxes. Exemptions or reductions sometimes apply to restructurings between charitable entities, but they are canton‑specific.
• VAT. Where a foundation carries on taxable activities, transfers of assets or of a going concern can raise VAT questions, including the availability of the notification (reporting) procedure. Review registration status and any input‑tax adjustment on transfer.
• Income and capital treatment. For non‑exempt or partially taxable foundations, reallocating assets can trigger income or capital consequences that must be modelled in advance.
• Donor consequences. Restructuring can affect the deductibility of past or planned donations if the recipient’s status changes. Communicate clearly with significant donors.

Cross‑border restructurings add a further layer. Where assets move to or from a foreign foundation, or where the seat is transferred, the Federal Act on Private International Law (PILA) governs applicable law and recognition, and applicable double‑tax treaties, generally following the OECD Model framework, determine how any cross‑border transfer is taxed. Transfer‑pricing concerns can arise where value moves between related entities in different jurisdictions. The practical mitigation is consistent across scenarios: obtain an advance tax ruling that confirms continuity of exempt status and the tax treatment of the transfers before executing the merger or separation.

What changes in 2026, supervisory and tax updates

Three trends shape foundation restructuring in 2026. First, supervisory authorities continue to apply rigorous purpose review, scrutinising whether a merger or separation genuinely preserves the founder’s dedication rather than repurposing assets. Second, beneficiary and transparency expectations have tightened, with authorities expecting clear, documented treatment of beneficiary rights and governance in any restructuring. Third, scrutiny of tax‑exempt status remains high, so the margin for assuming automatic tax continuity has narrowed.

The practical effect is longer, more evidence‑intensive supervisory reviews and a stronger premium on advance tax clearance. For boards planning a foundation merger Switzerland transaction in 2026, the actionable to‑dos are: commission a documented purpose‑continuity analysis before filing; prepare a beneficiary‑ and creditor‑protection memorandum for any separation; refresh beneficial‑ownership and anti‑money‑laundering documentation; and secure an advance tax ruling rather than relying on historic exemption decisions.

Common pitfalls and how to avoid them

• Unexamined charter. Proceeding without confirming the deed permits restructuring. Read the statutes first and identify any amendment route required.
• Purpose drift. Allowing the combined or divided purpose to deviate from the founder’s intent. Document continuity explicitly.
• Missing consents. Overlooking beneficiary or creditor consents. Map all rights holders during due diligence.
• Poor valuation. Using unsupported asset values. Use an external valuer with a disclosed methodology.
• Incomplete filings. Submitting an inconsistent file that triggers multiple review rounds. Reconcile the legal, financial and tax documents before filing.
• Assumed tax continuity. Relying on an old exemption decision. Obtain an advance ruling for the specific transaction.
• Earmarked assets. Reallocating conditional gifts through a merger. Honour ring‑fencing or use a separation instead.
• Cross‑border seat issues. Treating a seat transfer as a formality. Address PILA, foreign approvals and treaty consequences early.
• Accounting mismatch. Transfers that diverge from the approved allocation plan. Reconcile the ledger to the agreement.
• Underbudgeting. Ignoring cantonal fee variation and contingency. Build in a 15–20% buffer.

Next steps and board checklist

Before your next board meeting, use this short checklist to prepare a foundation merger Switzerland decision:

• Read the charter. Confirm whether the statutes permit merger or separation, or identify the amendment route.
• Adopt a mandate resolution. Appoint a project lead and authorise counsel and a tax adviser.
• Commission due diligence and valuation. Identify earmarked assets, beneficiary rights and creditor exposure.
• Engage the supervisory authority and tax authority early. Flag the transaction and seek informal feedback and, where available, an advance tax ruling.
• Assemble the document file. Use the required‑documents table to build a complete, consistent submission.
• Budget and timeline. Plan on three to nine months domestically, longer for cross‑border, with a cost contingency.

For deeper procedural detail, see our forthcoming guides: How to Separate a Swiss Foundation: Procedure & Checklist; Tax Checklist for Swiss Foundation Restructurings; and Cross‑border transfer of a foundation’s seat, steps & risks. To scope a specific foundation merger Switzerland transaction, consult a qualified Swiss foundations lawyer via the GLE directory for Switzerland and Foundations.

Sources

1. Swiss Civil Code, Foundations (Art. 80 ff.)
2. Federal Act on Merger, Demerger, Conversion and Transfer of Assets and Liabilities (Merger Act / FusG)
3. Federal Act on Private International Law (PILA)
4. Federal Tax Administration (FTA / Eidgenössische Steuerverwaltung)
5. Swiss Federal Supreme Court (Bundesgericht), case law portal
6. Federal Office of Justice (FOJ)
7. Federal Supervisory Authority for Foundations (ESA)
8. OECD, Model Tax Convention on Income and on Capital