What Are Mirror Wills and Are They Right for Us?
4 minute read
Mirror wills can be effective, but only when they fit your situation properly.
If you and your partner are thinking about writing your wills, there is a good chance someone has mentioned mirror wills to you. They are one of the most common will arrangements for couples in England and Wales, and for many people, they are a perfectly sensible and straightforward option. But they are not right for everyone, and it is worth taking a moment to understand exactly what mirror wills involve, where they can fall short, and what your alternatives might be.
This guide walks you through everything you need to know, in plain English.
Table of Contents
What Are Mirror Wills?
Mirror wills are two separate legal wills that a couple prepares at the same time, with each Will reflecting — or “mirroring” — the other’s key provisions. They are most commonly used by married couples or long-term partners who want to ensure their estates are handled in a coordinated way.
The term “mirror” refers to the fact that the wills are designed to be complementary. Each person leaves their estate on the same or similar terms, so that whichever partner dies first, the surviving partner and the agreed beneficiaries are provided for in a consistent and predictable way.
Although mirror wills work together in practice, it is important to understand that they remain two entirely separate legal documents. There is no single binding contract between the two, which has some important practical consequences that we will come back to later.
How Mirror Wills Typically Work
The most common arrangement is straightforward: upon the first partner’s death, everything passes to the surviving partner. When the second partner dies, the combined estate passes to the same agreed beneficiaries — most often the couple’s children. Each Will says essentially the same thing, just from the other person’s perspective.
A slightly more complex version might look like this: when the first partner dies, the family home is either transferred outright to the surviving partner, or held in a life-interest trust so that the survivor can live there for the rest of their life. The remaining assets may pass directly to other beneficiaries at that point. When the survivor later dies, the house (or the trust proceeds) passes to the same beneficiaries as agreed, typically the children of the relationship.
In both cases, the two wills are aligned in their goals and their outcomes, even though each document is legally independent.
The Advantages of Mirror Wills
For many couples, mirror wills are genuinely the most appropriate and cost-effective choice. Here is why.
They Are Simple and Cost-Effective
Because both wills follow the same basic structure and are drafted at the same time, they tend to cost less than two completely independent wills. The drafting process is efficient, the instructions are clear, and the legal work involved is comparatively straightforward. If your situation is uncomplicated, there is no reason to pay for complexity you do not need.
They Work Well When Your Intentions Are Aligned
Mirror wills are ideal when both partners have identical or very similar wishes for their estate. If you both want everything to go to the surviving partner first, and then on to the same children or beneficiaries afterwards, mirror wills reflect those intentions cleanly and without ambiguity.
They Are Appropriate for Couples with the Same Beneficiaries
Where both partners want to leave their estate to the same secondary beneficiaries — for example, the children of their relationship — mirror wills are a natural fit. There is no tension between competing priorities, and the wills simply confirm and formalise what the couple has already agreed between themselves.
If you have children from a previous relationship, you may want to read our post on wills and blended families
The Potential Disadvantages of Mirror Wills
Mirror wills have some real limitations that are worth thinking through carefully, particularly when it comes to what happens after the first partner dies.
The Survivor Is Free to Change Their Will
This is the most significant issue with mirror wills. Once the first partner dies and the surviving partner inherits the estate, there is nothing in a standard mirror will arrangement that prevents the survivor from updating or replacing their own will. They are under no legal obligation to stick to what was originally agreed.
In practice, this means that the secondary beneficiaries — perhaps the couple’s children — could find themselves cut out of an inheritance they had every reason to expect. The survivor may, with complete legal freedom, change their will to reflect new circumstances or new relationships.
Remarriage and New Relationships
The risk of the survivor changing their mind is most acute where a new relationship develops. If the surviving partner remarries, their new spouse may encourage or expect changes to the will. In England and Wales, getting married automatically revokes an existing will unless that Will was made specifically in contemplation of the marriage. This means that if the survivor remarries without making a new will, their estate could pass under the intestacy rules rather than under the mirror will at all.
Even if the survivor does not remarry, a new long-term relationship could influence their estate decisions in ways difficult to predict.
Children from Previous Relationships
Where either partner has children from a previous relationship — a blended family situation — mirror wills may not provide adequate protection. A child from a first marriage, for example, may have a reasonable expectation of an inheritance, but a mirror will does nothing to guarantee that. If the survivor later changes their will, or the estate passes in an unexpected way, those children could be left with no provision at all.
Business Interests and Complex Estates
Where one or both partners own a business, hold significant assets in their own name, or have financial obligations to third parties, completely independent wills are often more appropriate. Mirror wills work best where the financial picture is relatively simple and shared. Where it is not, the mirrored structure can create gaps or ambiguities that later cause problems.
Not sure whether mirror wills are right for your situation?
Our specialist will-drafting team is here to help. We can walk you through your options and recommend the most suitable approach for you and your partner — with no obligation.
How to Protect Against the Risks — Alternatives and Additions
If the limitations of mirror wills give you pause, there are several ways to address the risks without abandoning the mirror will approach entirely.
Life Interest Trusts
One of the most effective ways to protect the interests of secondary beneficiaries is to include a life interest trust in the will. Under this arrangement, when the first partner dies, the major asset — usually the family home — is not transferred to the surviving partner outright. Instead, it is held in a trust. The survivor has the right to live in the property (or receive income from other trust assets) for the rest of their life, but they do not own those assets absolutely. When the survivor dies, the trust assets pass to the agreed beneficiaries — the children, for example — regardless of what the survivor may have done with their own will in the meantime.
A life-interest trust does not prevent the survivor from changing their personal will, but it does protect the specific assets held in the trust. It is a practical and widely used solution in England and Wales.
Mutual Wills
A more binding option is to make mutual wills rather than simple mirror wills. Mutual wills go a step further than mirror wills by creating a binding agreement between the two partners not to change the will after the first partner dies. If the survivor changes their will in breach of that agreement, equity may impose a constructive trust over the estate to protect the original beneficiaries.
Mutual wills are a powerful tool, but they need to be approached with care. They are irrevocable once the first partner has died, which means the survivor loses the flexibility to update their will even in response to genuinely changed circumstances. For this reason, they are not always the most appropriate solution. A specialist will-drafter can advise you on whether mutual wills make sense in your particular case.
Completely Independent Wills
In some situations, the right answer is simply to move away from the mirrored structure entirely. If each partner has significantly different assets, obligations, or beneficiaries in mind, two wholly independent wills may provide more clarity and more effective protection than a mirrored arrangement ever could. Independent wills allow each person to make provision for their own family members, business interests, and personal wishes without being constrained by the need to mirror the other partner’s position.
What About a Joint Will?
You may occasionally come across the concept of a “joint will” — a single document that purports to be the will of two people simultaneously. While this might sound appealingly simple, solicitors and professional will drafters in England and Wales almost universally advise against joint wills, and for good reason.
A joint will creates significant legal complexity. It is unclear whether it operates as a mutual will (with the binding obligations that entails), and the practical difficulties of administering a single document that must serve as both parties’ Will can be considerable. There are uncertainties about what happens when the first person dies, whether the Will can be changed after that point, and how probate is handled.
Two separate wills — whether mirror wills, mutual wills, or independent wills — are always a more flexible, more certain, and more practical solution than trying to combine everything into a single document. Joint wills are a legal curiosity rather than a recommended option, and we would always advise clients to avoid them.
Are Mirror Wills the Right Choice for You?
Mirror wills are an excellent solution for many couples, but they are not right for everyone. Here is a simple way to think about it.
Mirror wills are likely to be a good fit if you and your partner have shared goals, intend to provide for the same beneficiaries, and want a simple, cost-effective solution. If you trust each other to keep things consistent over time, and your financial and family circumstances are not especially complex, mirror wills offer everything you need without unnecessary expense or complication.
Mirror wills may not be the best option if you already have a blended family with children from previous relationships, if one or both of you want to guarantee a specific inheritance for particular individuals, or if there is a realistic prospect that circumstances could change significantly after the first partner dies. In those situations, it is worth exploring alternatives — whether a life interest trust, mutual wills, or independent wills — before committing to a mirrored structure.
The good news is that whichever approach is most appropriate for you, we can help. Our experienced will-drafting team works with couples across England and Wales every day, and we will always take the time to understand your situation before recommending a solution.
Ready to get started, or still have questions?
Making a will is one of the most important things you can do for the people you love. Whether mirror wills are right for you or you need something more tailored, we are here to help.
Frequently Asked Questions
What is a mirror will?
A mirror will is one of a pair of wills made by a couple — usually married or in a long-term partnership — in which each person’s will reflects, or “mirrors”, the other’s key provisions. Typically, each Will says that on the first death, the estate passes to the surviving partner, and on the second death, the estate passes to the same agreed beneficiaries, such as the couple’s children. Although the two wills are complementary, they remain two separate legal documents.
Are mirror wills legally binding?
Yes, each mirror will is a legally valid and binding document in England and Wales, provided it meets the formal requirements for a valid will — namely, that it is in writing, signed by the testator, and witnessed by two independent adult witnesses who are present at the same time. What mirror wills do not do, by default, is bind the surviving partner to keep their will unchanged after the first partner dies.
Can a surviving partner change their mirror will?
Yes. In a standard mirror will arrangement, the surviving partner is free to change or revoke their will at any time after the first partner’s death. There is no legal obligation to keep the original terms. If you want to prevent this, the alternatives include drafting the wills as mutual wills or creating a life-interest trust to protect specific assets.
What is the difference between mirror wills and mutual wills?
Mirror wills are two separate wills that reflect each other’s provisions, but they do not prevent either partner from changing their will in the future. Mutual wills go further by creating a binding agreement between the two partners not to change their will after the first death. This makes mutual wills more restrictive but also more protective for secondary beneficiaries such as children.
Are mirror wills suitable for couples with children from previous relationships?
Mirror wills can be used by couples with children from previous relationships, but they may not provide sufficient protection in such situations. Because the surviving partner is free to change their will after the first death, children from a previous relationship could potentially find themselves without an inheritance. A life-interest trust or a mutual will arrangement may offer better protection in blended family situations.
Do mirror wills have to be made at the same time?
It is usual — and practical — for mirror wills to be made at the same time, since their value comes from the fact that they are complementary and coordinated. However, there is no strict legal requirement to do so. That said, if the wills are made at different times, there is a greater risk of inconsistency, so it is always advisable for both partners to go through the process together.
What happens to mirror wills if a couple divorces?
In England and Wales, divorce revokes any gifts to a former spouse in a will, and also revokes any appointment of a former spouse as executor. However, divorce does not revoke the will itself. This means that if you divorce and do not update your will, it continues to operate, but without the provisions for your former spouse, which can produce unintended results. You should always make a new will after a significant change in your relationship status..
How much do mirror wills cost?
The cost of mirror wills varies depending on the complexity of your circumstances and the service provider you use. Basic mirror wills for a couple tend to be more affordable than two completely independent wills, because much of the drafting work is shared. Contact our team for a clear, transparent quote based on your specific situation.
Disclaimer
This article is intended as general information only and does not constitute legal advice. The information refers to the law of England and Wales. Tax thresholds and legal rules are correct at the time of writing but are subject to change. We recommend that you seek professional advice regarding your own circumstances.
Bio
This article was written by Stephen Rhodes. Stephen was called to the Bar of England and Wales in 1999 and brings over 25 years of in-house experience working with solicitor firms across the Manchester area, with a specialism in Wills and Probate. He now focuses exclusively on will drafting, helping his clients ensure their loved ones are taken care of exactly as they would wish.