Types of Wills you should be cautious about

Last Updated on September 8, 2026 at 9:13 am

Although the Indian Succession Act, 1925 does not prescribe a standard form or specific terminology for drafting Wills, careful drafting is essential to avoid ambiguity and potential disputes. Word choice can have significant legal consequences. For the importance of clear communication while drafting a Will, please read our previous article, “Why clear communication is extremely important when writing a Will”.

About the author: Manmohan Sethumadhavan is a freelancer, investor, and personal finance enthusiast “in search of the absolute truth.” You can follow Manu on Twitter @ManuTsr. He is the author of the popular Revised Capital Gains Taxation Rules Ready Reckoner for FY 2025-2026.

JOINT WILL

A single Will jointly executed, usually by a husband and wife. It commonly provides that their respective properties, whether individually or jointly owned, pass first to the surviving spouse and, thereafter, to their children.

MUTUAL / RECIPROCAL WILLS

Two separate Wills made by two persons, usually husband and wife, based on an agreement to distribute their property in a particular manner, commonly first to the surviving spouse and thereafter to the children, with an undertaking not to revoke or change the arrangement after the first death. The key element is an agreement between the testators.

JOINT & MUTUAL WILL

A single Will made by two persons, usually husband and wife, providing for the disposition of their assets, whether held independently or jointly, and incorporating an undertaking not to revoke or alter the arrangement after the death of either. The key element is an agreement between the testators.

MIRROR WILLS

Two separate Wills, usually made by spouses, containing substantially corresponding or reciprocal provisions. Typically, each spouse leaves their assets to the other, with provision for the assets to pass to the children or other beneficiaries after the survivor’s death, where no agreement or undertaking restricts either spouse from later changing or revoking their Will.

The Indian Succession Act, 1925 does not expressly define either “joint Wills” or “mutual Wills”. These concepts have developed largely through judicial decisions, drawing upon principles of contract and equity. Normally, a Will remains revocable during the testator’s lifetime; however, where there is a clear and binding agreement between the testators regarding the disposition of their assets, the survivor may be legally bound by that agreement after the death of the first testator.

Courts may treat the property received by the survivor under such an arrangement as subject to a constructive trust in favour of the agreed beneficiaries. Importantly, merely making identical or similar Wills, or even a joint Will, does not by itself establish such an agreement; the existence and terms of the binding arrangement must be established from the Wills and surrounding circumstances.

Cancellation of joint wills can be confusing. A Joint Will is generally regarded as the Will of each testator separately. Therefore, after one testator dies, the dispositions relating to the deceased person’s property may take effect, while the surviving testator can ordinarily revoke their own testamentary dispositions. This becomes complicated where the Will deals with jointly owned property or provides for the survivor to inherit first and for another beneficiary to inherit later. The effect depends on how the property was owned and how the Will was drafted; revoking the Will does not necessarily mean that all dispositions made by the deceased testator disappear.

The greatest difficulty with Mutual Wills or a Joint & Mutual Will arises after the death of the first spouse. The survivor’s circumstances may change significantly, but the survivor may be unable to alter the agreed testamentary arrangement. Remarriage, estrangement from a child, the death or change in circumstances of a beneficiary, or a child failing to provide the expected care can make the original arrangement unsuitable. Disputes over the arrangement’s interpretation or enforceability can also tie up the estate for many years, particularly where substantial property is involved.

Cancellation of a registered Joint Will by a subsequent Will of the surviving spouse can create practical complications. A subsequent Will may revoke the survivor’s dispositions, but the earlier Joint Will also contains the testamentary dispositions of the spouse who has already died. Since there is only one registered document, treating the entire Joint Will as “cancelled” in the Sub-Registrar’s records can create difficulties when beneficiaries under the deceased spouse’s Will later need to establish and transfer the property bequeathed to them. This can lead to disputes over which provisions remain operative and, in some cases, prolong the transfer of the property.

I would generally recommend that spouses execute separate Wills, each clearly stating how their own property is to be distributed. They may, of course, make the Wills substantially identical and call them Mirror Wills for convenience. Separate Wills provide greater clarity and preserve each person’s freedom to change their Will as circumstances change, without creating uncertainty about the other person’s testamentary dispositions. They also avoid many of the practical complications that can arise when a single Joint Will is later revoked or otherwise dealt with after the death of one spouse. I would avoid Mutual Wills, whether separate or joint, unless there is a compelling reason to adopt such an arrangement and both parties fully understand its legal and practical consequences. Simplicity, clarity and flexibility are usually preferable in estate planning.