DIY Will for England and Wales — 2026 Complete Guide

A will is the cheapest, most powerful legal document in the system. Drafted correctly, it saves your family months of probate complexity, thousands in professional fees, and the emotional weight of guessing what you would have wanted. Left undrafted, intestacy rules decide for you — and they rarely match a typical modern family’s wishes.

This guide covers DIY wills in England and Wales to the Litigant Standard™ — what must be in, what should be in, and the traps that quietly invalidate otherwise careful documents.

The statutory test — s.9 Wills Act 1837

A will is only valid if:

• It is in writing
• Signed by the testator (or by someone in their presence and at their direction)
• The testator intends the signature to give effect to the will
• Signed in the presence of two or more witnesses present at the same time
• Each witness attests and signs in the presence of the testator

Any of those missing — invalid. Nothing else legal required.

The beneficiary-witness trap (s.15)

Under s.15 Wills Act 1837, a witness who is a beneficiary loses their gift — the will remains valid but their inheritance is void. Same applies to the witness’s spouse or civil partner. Never use a beneficiary as a witness. Neighbours, colleagues, or friends work perfectly.

Testamentary capacity — the Banks v Goodfellow test

At the time of signing, the testator must:

• Understand the nature of making a will and its effects
• Understand the extent of their property
• Be able to comprehend and appreciate the claims to which they ought to give effect
• Not be suffering from any disorder of the mind that distorts those claims

For testators with a diagnosis affecting cognition, a GP capacity letter signed on the day of execution is strong protective evidence.

Structure — the Litigant Standard

1. Opening — revocation + identity

“I, [full name], of [address], declare this to be my last will and testament and revoke all previous wills and codicils.”

2. Appointment of executors

Name at least one primary and one substitute. Two primary executors is safer. “I appoint [name] of [address] and [name] of [address] to be the executors and trustees of my will.”

3. Appointment of guardians (if minor children)

Under s.5 Children Act 1989. “If my children are under 18 at my death, I appoint [name] as guardian.”

4. Funeral wishes

Not legally binding but guides executors. Burial or cremation, any specific instructions.

5. Specific gifts (legacies)

Gift-by-gift. “I give to [name] my [specific item / sum of £X] absolutely.” Include a default if the beneficiary predeceases — “or if [name] dies before me, to [alternative].”

6. Pecuniary legacies

Cash gifts of specified amounts. “I give the sum of £10,000 to [name].”

7. Charitable gifts (consider the 10% rule)

If you leave 10%+ of your net estate to charity, the IHT rate on the rest drops from 40% to 36%. Significant saving for larger estates.

8. Residuary estate — the catch-all

“I give all the rest of my estate (my residuary estate) to [name(s)] in equal shares absolutely.” Always name residuary beneficiaries; without them, partial intestacy applies.

9. Survivorship clause

“No beneficiary shall take under this will unless they survive me by 30 days.” Prevents assets bouncing through two estates in quick succession.

10. Debts, expenses, inheritance tax

“I direct my executors to pay my debts, funeral expenses, and testamentary expenses from my residuary estate.” IHT on non-exempt legacies — specify whether paid from the gift itself or from residue.

11. Attestation clause

Above the signatures: “Signed by the above-named [testator] in our joint presence and then by us in theirs.” Both witnesses sign with name, address, occupation.

Common mistakes that void wills

• Only one witness present at signing
• Witnesses signing on different occasions
• Beneficiary or their spouse as witness (gift void)
• Will signed in pencil (not void, but evidentially weak — use black ink)
• Staple / paperclip marks suggesting missing pages
• Handwritten alterations not separately witnessed (void as to the alteration)
• Later will that doesn’t clearly revoke the earlier — partial effect only
• Marriage after signing (automatically revokes unless made in contemplation)

IHT planning inside the will

• Spouse exemption — unlimited to a UK domiciled spouse
• Charity exemption — unlimited
• Nil Rate Band (£325,000) — the untaxed band; can be fully used before rate kicks in
• Residence Nil Rate Band (£175,000) — where residence passes to direct descendants; see the IHT435 guide
• Transferable NRB — unused portion of first spouse’s NRB transferred on second death; see the IHT402 guide

Storing the will

• Original kept safely — with solicitor (usually free if they drafted), with the Principal Probate Registry (fee), at home in a fire-safe box
• Tell executors where it is — they cannot probate a missing will
• Voluntary registration via Certainty (National Will Register) if you expect contest
• Copies in digital and physical form — but executors present the ORIGINAL to probate

When to update

• Marriage (unless will states “in contemplation of marriage to [name]”) — marriage revokes
• Divorce — former spouse treated as predeceasing (under s.18A Wills Act)
• Birth or adoption of children — add them or confirm class gift covers
• Death of a named beneficiary or executor
• Major asset change (house purchase, inheritance received)
• Move jurisdiction (Scotland, Northern Ireland have different laws)
• Every 5 years as a health check

Inheritance Act claims — the 6-month window

Under the Inheritance (Provision for Family and Dependants) Act 1975, spouses, former spouses, civil partners, children, and certain dependents can claim reasonable financial provision. A well-drafted will explains reasoning for any seemingly unequal provision — reduces successful challenges materially.

Can Chris draft my will?

Yes. Tell Chris:

• Your full name and address
• Your executors (primary and substitute)
• Your specific gifts (item by item, amount by amount)
• Your residuary beneficiaries and percentages
• Any guardianship provisions for minor children
• Funeral wishes (optional)
• Any charitable gifts

Chris drafts the will with s.9 compliant attestation clause, survivorship provision, residuary catch-all, and IHT planning where appropriate. You print on good paper, sign in front of two adult non-beneficiary witnesses, they sign, you store. £30. A High Street solicitor typically charges £150–£500 for the same document.

Prepare to win. Plan not to fail.

Dying without a will leaves intestacy rules to decide. Intestacy rarely matches modern family wishes. Chris drafts the alternative in an afternoon.