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Can Someone Contest My Will After I Die?

How to make your wishes stick

Sarah Mitchell, Senior Estate Planner 11 min readUpdated 31 March 2024
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Yes, someone can try to contest your will — but you can take steps now to make it very difficult for them to succeed.

This is a worry we hear constantly: "I know what I want, but will my wishes actually be followed?" The fear of family disputes overriding your decisions is real. Let's look at who can challenge, how to protect your wishes, and what makes a will truly bulletproof.

Who Can Actually Contest a Will?

Not just anyone can challenge your will. Only certain people have legal standing:

Under the Inheritance Act 1975

These people can claim they weren't left "reasonable financial provision":

  • Spouse or civil partner
  • Former spouse who hasn't remarried
  • Cohabitant of 2+ years
  • Children (including adult children)
  • Anyone treated as a child of the family
  • Anyone financially dependent on you

Challenging Validity

Anyone who would benefit if the will failed (previous beneficiaries, intestacy heirs) can challenge on grounds of:

  • Lack of mental capacity
  • Undue influence or coercion
  • Fraud or forgery
  • Improper execution

The Most Common Grounds for Challenge

1. Lack of Testamentary Capacity

The argument: "They didn't understand what they were doing."

To have capacity, you must understand:

  • That you're making a will
  • What assets you have (roughly)
  • Who might expect to benefit
  • The effect of your decisions

How to protect against this:

  • Get a medical capacity assessment, especially if over 70 or with any health conditions
  • Use a solicitor who keeps detailed attendance notes
  • Make the will while clearly healthy, not during a crisis

2. Undue Influence

The argument: "Someone pressured them into it."

This is claimed when a beneficiary (often a carer or new partner) allegedly coerced the will-maker. It's difficult to prove but also difficult to defend against.

How to protect against this:

  • See a solicitor alone, without the beneficiary present
  • Explain your reasoning in a side letter
  • Consider a video recording of the signing (with consent)
  • Use an independent witness who doesn't benefit

3. Lack of Knowledge and Approval

The argument: "They didn't know what was in it."

Relevant when the will was prepared by someone who benefits, or the will-maker couldn't read it.

How to protect against this:

  • Read the will aloud to the will-maker
  • Have the will-maker initial every page
  • Document that they understood each provision

4. Inheritance Act Claims

The argument: "They didn't leave me reasonable provision."

This isn't about capacity or influence — it's about adequacy. Even a valid will can be varied if a court decides someone was unfairly left out.

How to protect against this:

  • Document your reasons for any exclusions
  • Consider leaving something (even small) to reduce claim strength
  • Show you considered their needs and made a deliberate choice

Making Your Will Bulletproof

Step 1: Use a Solicitor

A professionally drafted will is much harder to challenge than DIY. Solicitors:

  • Assess capacity properly
  • Keep detailed notes (crucial evidence)
  • Know the technical requirements
  • Can spot and address vulnerabilities

Step 2: Get a Medical Assessment

If there's ANY doubt about capacity — age, illness, medication — get a doctor's letter confirming you have capacity to make a will. This is gold-standard protection.

Step 3: Write a Letter of Explanation

A letter stored with your will explaining your reasons is powerful evidence. For example:

"I have chosen to leave my estate unequally between my children. This is because [child A] has already received significant help from me during my lifetime, including [details], while [child B] has not. I have considered this carefully and believe this achieves fairness."

This shows you understood your decision and made it freely.

Step 4: Execute Properly

Technical failures can invalidate a will entirely:

  • Sign in front of two witnesses present at the same time
  • Witnesses must also sign in your presence
  • Witnesses cannot be beneficiaries (or married to beneficiaries)
  • You must be signing your own will, not by proxy

Step 5: Review Regularly

An old, outdated will is more vulnerable to challenge. Review and update:

  • Every 3-5 years
  • After any major life change
  • After any change in family relationships

Protecting Against Specific Challenges

Excluding a Child

If you're excluding a child entirely:

  • Document your reasons extensively
  • Consider leaving them a nominal amount (shows deliberate choice)
  • Include a "no contest" clause if desired
  • Consider their financial position — a wealthy child has less basis to claim

Leaving Unequal Amounts

If treating children differently:

  • Explain lifetime gifts that justify the difference
  • Document different circumstances (disability, income levels)
  • Consider a family meeting to explain (optional, but can reduce disputes)

New Partner After Divorce

If leaving estate to a new partner:

  • Address children's concerns explicitly
  • Consider life interest trusts that benefit partner then children
  • Ensure the will was made without the new partner present

Do "No Contest" Clauses Work?

You can include a clause that says anyone who challenges the will loses their inheritance. These are sometimes called "in terrorem" clauses.

The reality:

  • UK courts have discretion to override them
  • They don't prevent Inheritance Act claims
  • They may discourage weak challenges
  • They're more psychological deterrent than legal protection

Include one if you want, but don't rely on it as your only protection.

What Happens If Your Will Is Challenged?

If someone contests after your death:

  1. Executors must defend the will using estate funds
  2. Court proceedings can take 1-3 years
  3. Legal costs are typically £20,000-100,000+ each side
  4. Most cases settle before trial
  5. The estate remains frozen during proceedings

This is why prevention is so much better than cure.

Your Specific Situation

Every family is different. Your vulnerability to challenge depends on:

  • Who you're leaving out or treating unequally
  • Your health and age
  • Family dynamics and relationships
  • The size of your estate
  • Whether you've made lifetime gifts

Want to Make Your Will Bulletproof?

Our estate planners can look at your specific situation and tell you exactly what steps to take to protect your wishes. It's free to ask.

Ask Your Question — It's Free

The Old Way vs Our Way

The Old Way Our Way
Write a will and hope for the best Build in protections from the start
Leave family to fight it out Document your reasoning clearly
Expensive lawyers if challenged Prevent challenges with proper planning
Generic templates Will tailored to your risk factors

Frequently asked questions

Can my children contest my will if I leave everything to charity?
Yes, children can make an Inheritance Act claim if they believe they weren't left "reasonable financial provision." However, adult children with their own income have a weaker claim. Documenting your reasons and their circumstances helps defend your wishes.
How long does someone have to contest a will?
Inheritance Act claims must be brought within 6 months of the grant of probate. Claims based on invalidity (lack of capacity, undue influence) have no fixed time limit but should be brought promptly. Courts may extend time limits in exceptional circumstances.
Will a "no contest" clause prevent challenges?
Not entirely. UK courts have discretion to override them, and they don't prevent Inheritance Act claims. They may discourage weak challenges as a psychological deterrent, but don't rely on them as your only protection.
Can someone contest a will because they weren't left enough?
Yes, under the Inheritance Act 1975, certain people (spouses, children, dependants, cohabitants) can claim they weren't left "reasonable financial provision." Courts consider their needs, the estate size, and your relationship.
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Sarah Mitchell

Senior Estate Planner

Sarah has over 15 years of experience helping families protect their assets and plan for the future. She specialises in will writing and trust planning for families with complex needs.

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