A will can contain every wish you have carefully considered for your family, your home and your savings – but it may fail if it is signed incorrectly. That is why this will signing requirements guide focuses on the final stage: turning a completed document into a legally valid will.
For most people, the process is straightforward. The key is not to rush it. Arrange the right witnesses, get everyone together in the same room, and follow the signing order carefully. A few minutes of care now can prevent uncertainty, delay and expense for the people you want to protect.
What makes a will legally valid?
In England and Wales, a will must meet formal signing rules. In simple terms, it must be in writing, signed by the person making the will, and witnessed correctly by two people.
The person making the will is sometimes called the testator. They must be at least 18 and have the mental capacity to understand what they are doing. They must also know broadly what is in their estate, understand who may have a claim on it, and make the will freely rather than under pressure from somebody else.
The legal rules are strict because a will takes effect only after death, when the person who made it cannot clarify their intentions. Proper witnessing helps show that the will was genuinely signed by the right person and that they meant it to take effect.
Will signing requirements: the essential rules
A standard will should be signed only when two suitable witnesses are physically present at the same time. The person making the will must sign it, or acknowledge a signature already made, in front of both witnesses.
Each witness must then sign the will in the presence of the person making it. The witnesses do not have to sign in front of one another, although having everyone remain together until the document is complete is the safest and simplest approach.
Remote witnessing by video call is not a normal option. Temporary arrangements introduced during the pandemic have ended, so you should plan for an in-person signing. Do not assume a FaceTime, Zoom or WhatsApp call will make the will valid.
It is also sensible for everyone to use the same document, at the same sitting. Passing a will between homes for separate signatures creates room for mistakes and questions later on.
A simple signing order
Set out the will on a flat surface and make sure every page is present. The person making the will should sign in the designated signature area while both witnesses watch. They should say clearly that this is their signature and that the document is their will.
The first witness should then add their signature, full name, address and occupation in the witness section while the will-maker is present. The second witness should do the same. Although addresses and occupations are not the core legal requirement, recording them makes it much easier to find a witness if the will is questioned in the future.
Use the date the will is actually signed. If a will is dated incorrectly, it may still be valid, but an accurate date helps establish which will is the latest one.
Who can witness a will?
Choose two independent adults who are likely to be available, reliable and able to confirm what happened if ever asked. Friends, neighbours or work colleagues can often be good choices. They do not need to read the will or know what it says.
The most important rule is that a witness should not be a beneficiary. A gift to a witness may fail, even where the rest of the will remains valid. The same problem applies if the witness is married to, or in a civil partnership with, a beneficiary.
For example, if you leave £5,000 to your sister and ask her husband to witness your will, the gift to your sister could be lost. Your will may still work in other respects, but it is an avoidable risk and can lead to family upset.
Do not use an executor as a witness if they are also receiving a gift under the will. An executor who receives nothing can usually witness, but independent witnesses are generally the cleaner choice. If there is any doubt, choose someone else.
A witness should be able to understand the act of witnessing. For practical reasons, use adults aged 18 or over who are not closely involved in the gifts your will makes. This gives your family the clearest evidence that the process was properly handled.
Common mistakes that can cause problems
The most damaging errors tend to happen when people treat signing as an afterthought. Signing before the witnesses arrive, asking one witness to sign later, or using a beneficiary as a witness can all create serious difficulties.
Another common problem is adding handwritten changes after the will has been signed. A change made later may not take effect unless it is signed and witnessed with the same care as the original will. Crossing out a name, changing a figure or adding a note in the margin can leave your executors uncertain about what you intended.
If your circumstances have changed significantly, a new will is often clearer than trying to alter an old one. Marriage, divorce, a new child, a house move, a major inheritance or a change in your chosen executors are all good reasons to review your arrangements.
Take care with copies too. Only the original signed will is normally used to deal with the estate. Keep it safe, tell your executors where it is stored, and do not staple extra papers to it after signing. A missing original can lead to assumptions that it was destroyed deliberately.
What if you cannot sign your own name?
A physical disability or illness does not automatically stop somebody making a valid will. If the person making the will cannot sign, another person may sign on their behalf, but this must be done in their presence and at their direction. The signing and witnessing steps still need to be followed carefully.
Where illness, reduced mobility or mental capacity could later be questioned, it is wise to take extra precautions. A medical professional’s view may be helpful where capacity is uncertain, and detailed notes about the signing circumstances can protect against later allegations of pressure or misunderstanding.
This is one of the occasions when tailored legal advice may be appropriate. A straightforward online will is a practical option for many households, but complicated family arrangements, disputed capacity or substantial business interests can need specialist support.
Signing mirror wills as a couple
Mirror wills are two separate wills, usually made by partners with similar instructions. They are not one joint document. Each person must sign their own will correctly in front of two witnesses.
Couples sometimes assume they can witness each other’s will. They should not do this where either partner benefits, which is usually the case. Arrange two independent witnesses and complete both documents one after the other. It is fine to use the same witnesses for both wills, provided the witnesses are eligible and each signing is properly carried out.
If your will includes a Protective Property Trust or Flexible Life Interest Trust, the execution rules are still the same. The trust wording may be more detailed, but the will must still be signed and witnessed correctly to take effect.
Before you put the will away
Read the final document once more before signing. Check names, addresses, gifts, executors and funeral wishes. Then make sure the witness details are complete and legible after everyone has signed.
Store the original somewhere secure and dry, but not somewhere so private that nobody can locate it. Let your executors know where it is held. A will that cannot be found may be almost as unhelpful as one that was never made.
Making a will is an act of care, and signing it correctly is what gives that care legal force. Set aside the time, choose your witnesses wisely, and give the people you love the certainty of knowing your wishes can be followed.