
When it comes to planning your estate in Singapore, understanding the different types of wills can save your loved ones from confusion later on. You might have heard of terms like joint will, mirror will, and mutual will, but what exactly do they mean?
In this blog, we’ll explore these concepts in a simple, approachable way, so you’ll know what suits your needs best.
What Is A Mutual Will?

A joint will is a single document made by two people, usually a married couple, who agree to leave their assets in a certain way. It acts as a “combined” will for both parties and typically includes instructions that come into effect after the first and then the second person passes away.
In a joint will, the terms are fixed. So, after the first person dies, the surviving person is usually not allowed to change the will’s terms, even if their circumstances or relationships change. This can be quite limiting, especially over time.
Joint wills are uncommon in Singapore, mainly because of how rigid they are. Most people prefer alternatives that allow more personal control and flexibility.
Pros Of A Joint Will
- Single Document: Easy to create as there’s only one will to manage.
- Shared Intentions: Helps couples express their joint wishes clearly.
- Avoids Disputes: Reduces the risk of either party changing the plan after the first death.
Cons Of A Joint Will
- Lack of Flexibility: Can’t be changed after the first death.
- Not Suitable For Changing Situations: May not account for future relationships, new children, or unexpected life events.
- Rarely Used In Singapore: May be considered outdated or unsuitable under current estate planning practices.
What Is A Mirror Will?
Mirror wills are a popular choice for couples in Singapore. They involve two separate wills, one for each person, with very similar or identical terms. Typically, each partner leaves everything to the other, and then to their children or shared beneficiaries if both pass away.
Unlike joint wills, mirror wills offer much more flexibility. Each person can change their will independently without needing the other’s consent. This is especially useful in cases of Divorce, remarriage, or if relationships with beneficiaries evolve over time.
Mirror wills are simple, efficient, and offer the right balance between shared planning and personal freedom.
Pros Of Mirror Wills
- Individual Control: Each person can update their will when they want to.
- Commonly Used In Singapore: A practical and widely accepted approach.
- Straightforward Setup: Easy for couples who want similar outcomes.
- Future-Proof: Easier to update as life circumstances change.
Cons Of Mirror Wills
- Not Legally Binding on Survivor: The surviving partner can change their will later on.
- May Not Guarantee Same Beneficiaries: If not reviewed regularly, the ultimate beneficiaries could be changed unintentionally.
- Assumes Trust: Requires trust that the surviving partner won’t change the plan drastically.
What Is A Joint Will?

Mutual wills go a step further than mirror wills. These are two separate wills, like mirror wills, but with one key difference: they’re based on a binding agreement between the two people not to change the terms without each other’s consent.
Once one person passes away, the other is legally prevented from changing their will. This provides peace of mind, especially in families where there are concerns about remarriage, step-children, or changes in loyalty over time. In Singapore, the enforceability of mutual wills depends on proof of the agreement, so clear documentation is crucial.
Mutual wills can be helpful in complex family structures or when both parties want absolute certainty that their wishes will be honoured after death.
Pros Of Mutual Wills
- Legally Binding Promise: The agreement cannot be changed after the first death.
- Protects Children From Previous Marriages: Ensures inheritance goes to intended beneficiaries.
- Offers Long-Term Security: Prevents the surviving partner from altering plans unexpectedly.
Cons Of Mutual Wills
- Legally Complex: Requires solid proof of agreement to be enforceable in Court.
- Inflexible After First Death: Cannot be amended even if personal circumstances change.
- Risk of Disputes: If the agreement is not clearly documented, it could lead to Court battles.
Conclusion About The Differences Of Mutual Will, Mirror Will And Joint Will
Choosing between a joint will, mirror will, or mutual will is an important step in protecting your family’s future under Singapore law. Each type offers different levels of flexibility and certainty, so it’s vital to make an informed choice that suits your unique situation.
If you need guidance tailored to your needs, Tembusu Law is here for you with the best criminal lawyers and family lawyers in Singapore to support your estate planning journey.
Get in touch today to secure your peace of mind.
Frequently Asked Questions About The Differences Of Mutual Will, Mirror Will And Joint Will
Can A Mutual Will Be Changed After One Person Dies?
No, mutual wills include an agreement that the surviving party cannot change the will’s terms after the first person dies, making it legally binding.
Are Joint Wills Common In Singapore?
No, joint wills are less common due to their inflexibility. Most couples prefer mirror wills or individual wills.
What Happens If A Divorce Occurs After Making A Mirror Will?
In Singapore, Divorce usually revokes any will made in favour of the former spouse unless otherwise stated, so updating the will is important after Divorce.
Can Mutual Wills Lead To Disputes In Court?
Yes, if the intentions or agreements behind mutual wills are unclear, disputes can arise, requiring the Court to interpret the wills.
Which Type Of Will Offers The Most Flexibility?
Mirror wills offer more flexibility since each party can amend or revoke their will independently at any time.