The Difference between ‘Joint Wills’ and ‘Mutual Wills’
| SUBJECT: The Difference between ‘Joint Wills’ and ‘Mutual Wills’ |
I. Introduction
This memorandum provides an exhaustive analysis of the distinction between joint wills and mutual wills under Philippine civil law. The conflation of these terms is common, yet they represent distinct testamentary instruments with different legal natures, formal requirements, and consequences. The primary focus is on the provisions of the Civil Code of the Philippines, specifically Articles 783 to 838 on testamentary succession, and relevant jurisprudence. A clear understanding of the difference is crucial for legal practitioners in advising clients on estate planning, as the choice between these instruments carries significant implications for the revocability of the will and the rights of the surviving testator and the beneficiaries.
II. Definition and Nature of a Joint Will
A joint will is a single testamentary instrument executed by two or more persons, containing the dispositions of their respective properties in one document. It is expressly prohibited under Article 818 of the Civil Code, which states: “Two or more persons cannot make a will jointly, or in the same instrument, either for their reciprocal benefit or for the benefit of a third person.” The prohibition is absolute, regardless of the relationship between the testators (e.g., spouses, siblings). The rationale behind this prohibition is to preserve the individuality, secrecy, and revocability inherent in the act of making a will. A joint will is considered a single act of two or more persons, which contravenes the personal and unilateral character of a testament.
III. Definition and Nature of Mutual Wills
Mutual wills, on the other hand, are separate and distinct wills executed by two or more persons, usually spouses, which contain reciprocal provisions in favor of each other. They are typically mirror images or substantially similar in content. Crucially, mutual wills are made pursuant to an agreement or compact between the testators that the wills shall be irrevocable after the death of the first testator. They are perfectly valid under Philippine law, provided each will complies with all the formal requisites of a notarial will or holographic will as prescribed by law (Articles 804 and 810, Civil Code). The essence of mutual wills lies not in their physical form but in the underlying contractual obligation not to revoke.
IV. The Prohibition of Joint Wills: Legal Basis and Effects
As stated, Article 818 of the Civil Code prohibits joint wills. The Supreme Court has consistently upheld this prohibition. In Ajero v. Court of Appeals (G.R. No. 106720, September 15, 1994), the Court reiterated that a joint will is void. If a single instrument is executed by two persons disposing of their properties, it is considered one will and is null and void in its entirety. The nullity is absolute. Consequently, the probate of such an instrument should be denied. The properties of the deceased testators will then be distributed according to the rules of legal or intestate succession.
V. The Validity and Binding Force of Mutual Wills
Mutual wills are valid as separate wills. The critical legal issue arises from the agreement not to revoke. Philippine jurisprudence recognizes that while a will is inherently revocable during the testator’s lifetime (Article 828, Civil Code), a contract imposing upon a testator the obligation not to revoke his will may be valid under certain conditions. For such a contract to be binding, it must be supported by a causa or consideration, not merely a promise based on love and affection. The agreement itself is a contract, distinct from the wills, and is governed by the law on contracts. Upon the death of the first testator who performed their part of the agreement, the surviving testator becomes contractually obligated not to revoke or alter their mutual will in a manner inconsistent with the agreement. If they do so, the beneficiaries named in the original mutual will may have a cause of action for specific performance or damages based on the contract, not on the revoked will itself.
VI. Key Points of Distinction
The fundamental distinctions are as follows: A joint will is one document for two testators and is void. Mutual wills are two or more documents with reciprocal provisions and are valid. The physical instrument differentiates them primarily. Furthermore, mutual wills involve an element of contract (agreement not to revoke), which imposes an in personam obligation on the surviving testator, whereas a joint will, being void, creates no such obligations.
VII. Comparative Analysis Table
| Aspect of Comparison | Joint Will | Mutual Wills |
|---|---|---|
| Governing Law & Validity | Expressly prohibited under Article 818 of the Civil Code; absolutely void. | Permissible; each will must independently satisfy the formalities of Articles 804-806 or 810 of the Civil Code. |
| Physical Form | A single testamentary instrument executed by two or more persons. | Two or more separate and distinct testamentary instruments. |
| Legal Nature | A single, unified testamentary act (which is illegal). | Separate testamentary acts, coupled with an underlying contract (agreement not to revoke). |
| Revocability | The concept is inapplicable due to absolute nullity. | Inherently revocable inter vivos, but revocation may constitute a breach of the separate contract after the first testator’s death. |
| Underlying Agreement | None required; the prohibition attaches to the form itself. | An agreement not to revoke is essential to its character as mutual wills; this contract is enforceable. |
| Effect of Death of First Testator | The entire instrument is void; no disposition takes effect. | The will of the first decedent is probated. The surviving testator is contractually bound not to defeat the agreement. |
| Remedy for Breach | Not applicable. The “will” is void ab initio. | Beneficiaries may file an action for specific performance or damages based on the contract, not on the law of wills. |
| Common Use | None, as it is illegal. Attempts are often made by spouses unaware of the prohibition. | Typically between spouses in second marriages, or where there is a desire to provide for the survivor and ultimately for children from a previous union. |
VIII. Practical Implications and Ethical Considerations
For legal practitioners, it is imperative to advise clients that a joint will cannot be prepared. Any request for a “will for both of us” must be correctly channeled into the preparation of two separate mutual wills. The attorney must also thoroughly explain the serious contractual implications of an agreement not to revoke accompanying mutual wills. The client must understand that while they can physically revoke their will, doing so after the first testator’s death may lead to a lawsuit for breach of contract. Documentation of the client’s instructions and the explanation provided is crucial to avoid future allegations of negligence or misunderstanding.
IX. Relevant Jurisprudence
Ajero v. Court of Appeals: Reinforced the absolute prohibition against joint wills*.
Reyes v. Reyes (G.R. No. L-46892, June 15, 1990): While not exclusively about mutual wills, it discusses the revocability of wills and the possibility of contractual limitations on such revocation, supporting the principle that the agreement in mutual wills* is enforceable as a contract.
Baluyut v. Panio (G.R. No. L-42088, July 20, 1983): The Court distinguished between the will itself (which is revocable) and a contract concerning inheritance (which may be binding), aligning with the doctrinal foundation for enforcing agreements underlying mutual wills*.
X. Conclusion
In summary, under Philippine civil law, a joint will and mutual wills are fundamentally different. A joint will is a single, prohibited instrument that is void ab initio. Mutual wills are separate, valid wills executed pursuant to a binding contract not to revoke. The former is a nullity based on form; the latter’s enforceability hinges on contract law. For effective estate planning, attorneys must ensure strict compliance with the formal requisites for individual wills and provide comprehensive advice on the contractual obligations inherent in establishing mutual wills. The distinction protects the testator’s statutory right to revoke their will while honoring the legitimate contractual expectations of parties to a mutual testamentary agreement.