Is it possible to change my will in Switzerland? How do I proceed?

You wrote your will a few years ago, but your circumstances have changed: a new child has been born, you've remarried, or you simply wish to review the distribution of your assets. A legitimate question then arises: can you modify your will? The answer is yes, and it's even a fundamental right in Switzerland. The Swiss Civil Code guarantees every testator the freedom to modify or revoke their testamentary dispositions at any time, as long as they retain their capacity to make decisions. Let's explore together how to proceed with complete legal certainty.

1. The principle of the revocability of a will in Swiss law

1.1. A fundamental right of the testator

Under theart. 509 CCAny person of sound mind may revoke or amend their will at any time. This fundamental principle of Swiss inheritance law ensures that your last wishes always reflect your current situation and desires. It is a personal and inalienable right: you cannot waive this right to modify your will in advance.

This rule applies regardless of the form of your initial will, whether it is holographic (entirely handwritten) or notarized. You therefore retain complete freedom to revise your will until your death, which is reassuring in a world where family and financial situations are constantly evolving.

Note that This freedom to modify is limited by only two elements: your capacity for discernment and respect for the reserved portions of your legal heirs (art. 470 ff CC). You therefore cannot completely disinherit your descendants, your spouse or your parents in certain situations.

1.2. Conditions for validity in modifying a will

To make a valid change, you must meet the same conditions as when you initially drafted it. According to theart. 467 CCYou must be at least 18 years old and possess the capacity for discernment. This last condition means that you must be able to understand the consequences of your actions and form your will freely and with full knowledge.

It should be emphasized that a person under general guardianship cannot change their will without the agreement of their guardian and the adult protection authority (art. 468 CCThis protection aims to ensure that the changes accurately reflect the true wishes of the testator.

2. The different methods for changing your will

2.1. Total revocation and drafting of a new will

The simplest and safest method is to write a completely new will that replaces the previous one. In accordance with theart. 511 Article 1 of the Swiss Civil Code states that a new will automatically revokes any prior incompatible provisions. It is strongly advised to explicitly state in your new will that you are revoking all prior provisions to avoid any ambiguity.

Practical example: Mr. Dupont wrote a will in 2015 bequeathing his cottage to his brother. In 2024, he wrote a new will bequeathing the same cottage to his daughter. The new will automatically revokes the previous provision concerning the cottage.

2.2. Revocation by physical destruction

Article 510, paragraph 1 of the Swiss Civil Code (CC) stipulates that a holographic will can be revoked by its intentional destruction by the testator. Therefore, tearing, burning, or rendering your handwritten will illegible constitutes a valid form of revocation. However, this method applies only to holographic wills, not to public wills held by a notary.

Important: Accidental destruction or destruction by a third party does not invalidate a will. Only intentional destruction by the testator themselves has this legal effect. If you keep copies of your will, remember to destroy them as well to avoid any future confusion.

2.3. The codicil: to modify partially without rewriting everything

If you simply wish to make minor changes to your existing will, you can write a codicil. This is a supplementary document that modifies, supplements, or revokes specific provisions of your original will without invalidating it entirely.

The codicil must comply with the same formalities as the will itself (art. 498 ff CCIf your original will is handwritten, your codicil must also be entirely handwritten, dated, and signed. This method is convenient for one-off adjustments, such as changing a specific bequest or adding a beneficiary.

Concrete example : Ms. Martin wrote a detailed will in 2018. In 2024, she simply wishes to add a bequest of 10,000 francs to a charitable organization. Rather than rewriting her entire will, she writes a handwritten codicil specifying this additional bequest.

2.4. The formal declaration of revocation

For a public will held by a notary or cantonal authorities, you can formally revoke it by declaring your wishes before a public official (art. 510 al. 2 CCThis procedure guarantees optimal traceability and avoids any subsequent dispute about your intention to revoke your previous arrangements.

3. Essential precautions during modification

3.1. Strictly adhere to legal formalities

This is undoubtedly the most crucial aspect: any modification must comply with the formal requirements of the Swiss Civil Code. A holographic amending will must be entirely handwritten, precisely dated (day, month, year) and signed by you (art. 505 CCThe absence of any one of these elements may render your modification invalid.

Trap to avoid: Never use a computer to write or change a handwritten will, even partially. Nor can you ask someone else to write it for you. These mistakes are surprisingly common and invariably result in the document being invalidated.

3.2. Avoid ambiguities and contradictions

When you amend your will, ensure that your new provisions are perfectly clear and do not contradict any clauses you wish to keep. If there are inconsistencies between multiple wills or between a will and a codicil, the courts will have to interpret your intentions, which could lead to outcomes different from what you intended.

It is strongly advised to review all your provisions after any changes to ensure their overall consistency. If your assets or family situation have changed significantly, it is often preferable to draft a completely new will rather than making a series of partial amendments.

3.3. Always date your changes

The date is of paramount importance when amending a will. According to Article 505, paragraph 2 of the Swiss Civil Code, the absence of a date renders the will invalid, unless the date can be established in another way. The date is particularly important for determining the chronological order of the provisions in the case of multiple wills.

Specific situation: If you write several successive wills or codicils, only a precise date will allow your heirs and the authorities to understand which was your most recent wish, and therefore the one that should apply.

4. What should be done with the Old Testament?

4.1. Holographic will destruction or preservation

If you have written a new will that completely replaces the old one, you can physically destroy the old document. This physical destruction reinforces the clarity of your decision and prevents the old will from being found after your death, thus avoiding confusion.

However, if you prefer to keep the old will for your personal records, it should be clearly marked as revoked and the date of the new will should be specified. This precaution will help avoid any future disputes.

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4.2. Public will: inform the notary

For a public will, you must contact the notary or cantonal authority holding your will to inform them of your revocation. Although the new will automatically revokes any incompatible provisions, this administrative step ensures that the old document will not be taken into account when settling your estate.

Some cantons maintain a central register of wills. It is recommended that you check with your canton of residence regarding the specific procedures to follow to register your new will and cancel the registration of the old one.

5. Special situations requiring increased attention

5.1. Changes after a divorce or remarriage

Your marital status has a significant impact on your estate. Under Article 120, paragraph 2 of the Swiss Civil Code, divorce automatically revokes any testamentary provisions in favor of your former spouse, unless you expressly state otherwise. However, it is strongly advised to draft a new will after a divorce to clarify your intentions.

In the event of remarriage, check that your will accurately reflects your new family situation, particularly with regard to the protection of your new spouse and, where applicable, your stepchildren or children born of this new union.

5.2. Modification in the presence of a succession agreement

Warning: if you have entered into a succession agreement (art. 494 ff CCYou cannot unilaterally modify the provisions covered by the agreement. A succession agreement is a contract that binds the parties, and its modification requires the consent of all contracting parties. Only testamentary provisions that are not covered by the agreement can be freely modified.

Important: A succession agreement is a complex legal instrument that limits your freedom to modify your estate planning. If you have signed such an agreement, it is essential to consult a professional before making any changes to your death benefits.

Conclusion: Secure your will amendments

Changing your will is not only possible in Switzerland, but it is also recommended whenever your personal, family, or financial circumstances change. Swiss law offers considerable flexibility with several methods: total revocation, codicil, physical destruction, or formal declaration.

However, this flexibility comes with strict formal requirements and legal subtleties that should not be overlooked. A formal error, an ambiguity in the wording, or a lack of understanding of the rules concerning forced heirship can compromise the validity of your amendments and create conflicts among your heirs.

Given these challenges, it is strongly advised not to proceed alone, especially if your situation is complex. Legal Testa assists you in amending your will with complete legal security, ensuring strict compliance with the provisions of the Swiss Civil Code. Our platform guides you step by step so that your last wishes are clearly and validly expressed, offering you the peace of mind that such an important process deserves.

Don't wait until it's too late: if your will no longer reflects your current situation, take the time to amend it today.