Mirror wills explained: what they are, how they work and whether you need one - My Local Will Writer

If you and your partner have been meaning to sort your wills, there is a good chance the phrase “mirror wills” has come up. They are by far the most popular choice for couples in England and Wales, and once you understand how they work, it is easy to see why. This article is a mirror will explained in plain terms: what mirror wills are, how they compare to a joint will, and the question that catches most couples off guard – what happens to your mirror will after your partner dies?

What is a mirror will?

A mirror will is one of a pair. You and your partner each have your own separate legal document, but the two wills reflect each other in their main wishes. Typically, each of you leaves everything to the other, with the same secondary beneficiaries, usually your children, named to inherit if the first partner has already died.

The word “mirror” describes the structure, not a legal category. There is no statute in England and Wales that defines a mirror will as such. In practice, it means two independent documents that happen to say broadly the same thing, one belonging to you and one belonging to your partner.

This independence matters. Each of you signs your own will in front of a witness, and each of you owns your own document. If one will is challenged or revoked, the other is entirely unaffected.

Mirror wills are not the same as mutual wills, which are a separate and more complicated arrangement. A mutual will includes a legally binding agreement not to change your wishes after one partner dies. Mirror wills carry no such restriction, which is part of why they suit most couples so well. More on that below.

How does a mirror will work in practice?

Take a couple who want to leave everything to each other and then, equally, to their two children. A will writer prepares two documents that reflect those wishes. Each partner reads and signs their own will in front of an independent witness, and both wills are then stored however the couple chooses.

Each will names the other partner as the primary beneficiary and the same secondary beneficiaries. Executors are usually each other, with a backup named in case both have died before the estate is wound up.

Getting mirror wills written is essentially the same process as getting a single will. It just happens twice, for two people, often in a single conversation. At My Local Will Writer, both partners give their instructions during one phone call, and each will is then checked by a solicitor before it is finalised. The cost starts from £99 for the pair, which is worth knowing when you are comparing options and thinking about how much a will costs in the UK. One of the most common questions we get at this stage is whether both partners need to be on the same call: they do not, though it often saves time.

Mirror wills vs joint wills: what is the difference?

A joint will is a single document signed by both partners. It binds both estates together, which creates legal complications for the surviving partner if they later want to change anything. Joint wills are rarely used in England and Wales and are widely considered an outdated approach.

Mirror wills are the standard modern alternative for wills for couples, and solicitors in England and Wales almost universally recommend them over joint wills. Two separate documents give each of you a clear, clean legal instrument without tying the survivor’s hands. The distinction comes down to one document versus two.

A common misconception here is that “joint will” and “mirror will” are interchangeable terms for the same thing. They are not. A joint will is a single legally binding document that can cause significant problems for a surviving partner who wants to update their arrangements, whereas mirror wills are two entirely separate documents that happen to reflect each other. Most solicitors stopped recommending joint wills decades ago for exactly this reason.

Can you change a mirror will after your partner dies?

Yes, and this is the point that surprises some people. Because mirror wills are two legally independent documents, the surviving partner is entirely free to make a new will at any point. English law places no restriction on changing a mirror will after the death of a spouse or partner.

This is precisely where mirror wills and mutual wills part company. Mutual wills are built around a binding agreement not to change the terms after one partner dies. The survivor’s freedom to update their will is a feature of mirror wills, not an oversight.

For most couples this flexibility is exactly what they want. Circumstances change. A surviving partner might remarry, have new dependants or simply want to revisit decisions made years earlier. In our experience, the majority of surviving partners do update their wills within a few years of bereavement, and the ability to do so without legal challenge makes that process considerably less stressful.

Some couples do feel uneasy about this, particularly where children from a previous relationship are involved and there is a concern that the surviving partner might later redirect assets away from those children. That is a legitimate thing to think about, and a good will writer will raise it with you. If a binding arrangement feels right for your situation, a mutual will may be worth exploring. For the majority of couples, though, the flexibility of mirror wills is more of a benefit than a concern.

Who should consider mirror wills?

Mirror wills suit most couples with shared assets and broadly shared wishes about what should happen to those assets. That includes married couples, civil partners and people who are cohabiting. If you are looking at wills for couples in the UK, mirror wills are almost always where the conversation starts.

For cohabiting couples in particular, getting wills in place is especially important. Under the intestacy rules that apply in England and Wales, cohabiting partners have no automatic inheritance rights if their partner dies without a will. It does not matter how long you have been together or what you own jointly. Without a valid will, your partner has no legal claim on your estate, and vice versa, and this applies even after decades of living together and raising children. Mirror wills close that gap entirely.

Mirror wills do not have to be identical in every detail either. You and your partner might agree on the main shape of your estates but want individual flexibility in some clauses. The mirroring is about the overall structure, not a requirement that every line matches.

Couples with more involved arrangements, such as blended families, business assets or property held in trust, may find they need additional guidance. A will writer can work that out with you during the call and tell you if anything in your situation calls for a different approach. It is also worth reading about how to update your will after divorce if your circumstances have changed significantly since you last made a will.

Mirror wills are the standard, practical choice for most couples in England and Wales, and getting them in place is simpler than most people expect. If the questions raised in this article sound familiar, you are probably in the right place. A short call is all it takes to get started. Get a free quote and find out what the right option looks like for you and your partner.

Frequently asked questions

What is a mirror will in the UK?

A mirror will in the UK is one of a pair of wills written for two people, usually a couple, whose main wishes reflect each other. Each will is a legally independent document. The most common arrangement is for each partner to leave everything to the other, with children or other named beneficiaries inheriting if both partners have died.

Are mirror wills legally binding?

Each mirror will is a valid, legally binding document in its own right. However, mirror wills do not bind either partner to those wishes permanently. Either person can change or revoke their will at any time, including after their partner has died. If you want a binding commitment that neither partner will change their will after the first death, that is a mutual will, which is a different and more complex arrangement.

Can you change a mirror will after your partner dies?

Yes. Because mirror wills are two separate documents, the surviving partner is free to make a new will at any point. There is nothing in English law that prevents this. If you want the survivor to be legally bound to the original terms, a mutual will is the arrangement to look at instead.

What is the difference between a mirror will and a joint will?

A joint will is a single document signed by both partners, binding both estates together. A mirror will is one of two separate documents that reflect each other. Joint wills are rarely used today and are generally considered inflexible. Mirror wills are the recommended option for couples in England and Wales.

How much do mirror wills cost in the UK?

Prices vary by provider. At My Local Will Writer, mirror wills start from £99 for the pair. Each will is checked by a solicitor before it is finalised. For a broader look at will writing costs, see how much a will costs in the UK.