A Bargain Will Can Be a Costly Inheritance: Where Home-Made Wills Go Wrong

There is a particular kind of heartache we see regularly in practice: a grieving family opening a drawer, finding a will, and slowly realising it does not do what their parent intended. The document exists. It looks official. And yet it fails — not through bad luck, but through a wording choice or a missing formality that a solicitor would have spotted in minutes.

Home-made wills are not illegal, and some are perfectly valid. The trouble is that the people who write them rarely know which mistakes matter until it is too late to fix them.

The Witnessing Trap

The most common fatal flaw is also the simplest. Under the Wills Act 1837, a will must be signed by the testator in the presence of two witnesses, who then sign in the testator's presence. Crucially, neither witness — nor their spouses — may benefit under the will. If they do, the gift to them fails.

We have seen a will witnessed by the very beneficiary it favoured, wiping out a legacy of tens of thousands of pounds. The will itself remained valid; the gift simply vanished. A DIY template downloaded from the internet rarely explains this with sufficient force, and the person making the will is no longer around to explain what they meant.

When Ambiguity Becomes Litigation

Poor wording is subtler but often more expensive. Consider the executor clause: a home-made will might appoint 'my solicitor' without naming them, or appoint two executors who have since fallen out, or omit a substitute entirely. If the named executor has died, the family must apply for letters of administration with will annexed — a slower, more cumbersome route through the probate registry.

Worse still are vague gifts. Phrases like 'my holiday home to be shared fairly' or 'my savings to whoever needs them most' invite challenge. Ambiguity in a will is not resolved by the person who wrote it; it is resolved by construction rules, statutory provisions, or — all too often — a contested probate claim under the Inheritance (Provision for Family and Dependants) Act 1975. Each of those routes costs money that comes, ultimately, out of the estate.

The Residuary Clause Nobody Wrote

Many DIY wills deal with specific items — the house, the car, a ring — and say nothing else. Without a properly drafted residuary clause, the remainder of the estate passes under the intestacy rules, potentially to relatives the deceased had not spoken to in decades. A partial intestacy is one of the most frequent and most avoidable outcomes of a template will.

Situations Where Professional Advice Is Essential

Some circumstances carry risks that no £30 template can manage:

• Blended families. Balancing a surviving spouse's position against children from a previous marriage is a classic trigger for Inheritance Act claims. Trust-based provisions may be needed.
• Property held abroad. Foreign assets may require a separate will in the local jurisdiction, and forced heirship rules in countries such as France and Spain can override English wishes entirely.
• Business or agricultural assets. Reliefs from inheritance tax, partnership share transfers and succession planning demand specialist drafting.
• Care home fee planning and means-tested benefits. Careless lifetime gifts or trust clauses can be treated as deliberate deprivation of assets.
• Vulnerable or dependent beneficiaries. Leaving a share outright to someone on means-tested benefits, or lacking capacity, may require a trust rather than a simple gift.

A Modest Investment Against a Heavy Price

A professionally drafted will typically costs a fraction of what a single contested probate claim costs — and contested claims routinely run to five figures. The £30 saved on a template is, in the worst cases, dwarfed by £30,000 in legal fees, delay and family breakdown.

If your circumstances are straightforward and you are confident in the formalities, a DIY document may serve you. But if any of the situations above apply, or if you simply want the certainty of knowing your wishes will be carried out without argument, we would be glad to help. A short conversation now can spare your family a great deal later.