Will for Single Parent UK: Guardianship, Trusts & Estate Planning (2026)

As a single parent, your will does something no other legal document can: it names the person who will raise your children if you die, creates a financial trust to protect their inheritance until they are old enough to manage it, and ensures your estate reaches them without the courts having to decide.

Without a will, there is no guardian appointment, no trust, and no control over who gets what or when. This guide covers everything a single parent needs to address in a will under the law of England and Wales.

Key facts for single parents

A will is the only reliable way to appoint a guardian for your children under s.5 Children Act 1989.
Without a will, your children inherit at 18 under the intestacy rules — a will lets you set 21 or 25.
Your will controls the financial trust; it does not override a surviving parent's parental responsibility.
Life insurance written in trust is the financial foundation that makes the trust in your will meaningful.
Making a will takes around 90 minutes with a good template. It is not a reserved legal activity.

1. Appointing a guardian in your will

Section 5 of the Children Act 1989 gives any parent with parental responsibility the power to appoint a guardian in their will. The appointment must be in writing, signed, and dated — a properly executed will satisfies all three.

When does the guardian actually take over?Only when the last surviving parent with parental responsibility dies. If the other parent is alive and has parental responsibility (because you were married, or they are on the birth certificate), they retain full sole care of the children. Your will's guardian appointment does not override a living parent.

Who has parental responsibility? A mother always has it automatically. A father has it if he was married to the mother at birth, or (for births since 1 December 2003) if named on the birth certificate. Otherwise a father must have a parental responsibility agreement or court order.

Name a primary guardian and a substitute in case the first choice cannot act. Both should be people you have spoken to about the role — guardianship is a significant, long-term commitment. For detailed guidance on choosing a guardian, see our guardianship in a will UK guide.

2. Creating a trust for your children

Without a will, your children's inheritance is held on the statutory trusts under the Administration of Estates Act 1925 and distributed in full at 18. Most parents feel 18 is too young to receive a significant lump sum.

A will lets you create a discretionary trust (or a bereaved minor's trust under s.71A IHTA 1984) that:

Holds the capital until your chosen age (21 or 25 are most common).
Allows trustees to pay income to the guardian for the children's maintenance, education, and housing before that age.
Permits trustees to advance capital early for specific purposes (university fees, a first home deposit).
Gives you the ability to include phased vesting (e.g. half at 21, half at 25).

Your trustees and guardian can be different people — separating them ensures that no single person controls both your children's upbringing and their money. A Letter of Wishes alongside your will gives trustees non-binding guidance on how you want funds used.

3. Life insurance and pension nominations

A trust in your will is only as useful as the assets that flow into it. For most single parents, the primary source of wealth for the children will not be savings or property — it will be a life insurance payout.

Life insurance written in trust: A term policy with the payout paid into a trust (not your estate) means it bypasses probate, arrives quickly, and is not counted for inheritance tax purposes. It goes directly to your trustees for your children. Cover enough to replace your income until the youngest child finishes education.
Pension death benefit nominations: Pension death benefits pass outside your will, direct to whoever you nominated with the scheme. Update your nominations with every pension provider after any major life change. An out-of-date nomination can mean the money goes to an ex-partner rather than your children. See our pension nomination UK guide.

4. Lasting Powers of Attorney

As a single parent, if you lose mental capacity there is no co-parent to manage the household, pay the bills, or make medical decisions. A Lasting Power of Attorney for property and financial affairs keeps your home, bank accounts, and finances managed. A health and welfare LPA ensures your named attorney (not a hospital committee) makes decisions about your care and where you live. Making LPAs now, while you have capacity, protects your children from a court-appointed deputy deciding your affairs. See our LPA guide for the full process.

How to write your will as a single parent

1
Choose your executor
Appoint one or two executors to administer your estate — collecting assets, paying debts, and distributing inheritances. Your executor can also serve as a trustee. Choose someone organised and trustworthy; many single parents appoint a sibling or close friend alongside a professional executor.
2
Name a guardian for your children
State the full name and address of the person you want to raise your children. Name a substitute in case your first choice cannot act. Discuss the role with them before including their name.
3
Set up a trust for your children's inheritance
Specify the capital vesting age (commonly 21 or 25), name your trustees, and give them discretion to pay income to the guardian for maintenance, education, and housing before that age. Write a separate Letter of Wishes to guide trustees on how you want funds used.
4
Sign and witness your will correctly
Print your completed will. Sign it at the end in the simultaneous presence of two independent adult witnesses who are not beneficiaries, guardians, or trustees. Both witnesses sign immediately after you, in each other's presence (s.9 Wills Act 1837).
5
Store safely and tell the right people
Store the original in a fireproof location or with a solicitor. Keep a copy at home. Tell your executor and guardian exactly where the original is. Review after every major life event.

Make your will today

WillSafe UK's Single Will Kit (£39.99) includes a plain-English template with guardian and trust clauses for England and Wales, plus a step-by-step signing and witnessing guide. Download, complete, sign, and store — in under 90 minutes.

Single Will Kit — £39.99 Guardianship Workbook

Frequently asked questions

What happens to my children if I die as a single parent with no will?

Without a will there is no guardian appointment. If the other parent has parental responsibility (was married to you, or is named on the birth certificate), they automatically become sole carer. If no parent with parental responsibility survives, local authority Social Services may become involved and a relative must apply to the family court for a child arrangements order — a potentially contested, lengthy process. Financially, your estate passes under the intestacy rules (Administration of Estates Act 1925): your children's shares are held on statutory trusts until they turn 18, when they receive the full capital. Many parents consider 18 too young to inherit a significant sum. A will lets you set a higher vesting age (21, 25) and appoint the trustees you trust.

How do I appoint a guardian for my children in my will?

Under section 5 of the Children Act 1989, any parent with parental responsibility can appoint a guardian in their will. The appointment must be in writing, signed, and dated — a will satisfies all three requirements automatically. Your guardian takes effect only when the last surviving parent with parental responsibility dies. If the other parent has parental responsibility and is still alive, they retain sole care of the children regardless of what your will says. Name a substitute guardian in case your first choice cannot act. Always discuss the role with the person before naming them.

Should the guardian and trustee be the same person in my will?

Not necessarily — and separating them provides a useful check and balance. The guardian cares for your children day-to-day; the trustee manages the financial trust holding their inheritance. If they are different people, the trustee assesses every payment request from the guardian, preventing any single person from having unchecked control over both your children and their money. Many parents appoint the guardian as one of two trustees so they have input into financial decisions without sole control. Whoever you appoint, choose people who will communicate well with each other.

At what age should my children receive their inheritance?

There is no legal minimum age — it is entirely your choice. The default under the intestacy rules is 18. Many parents consider this too young and set a higher age in their will: 21 is common; 25 is widely used for larger estates. You can also build in phased distributions (half at 21, half at 25) or give trustees discretion to pay out earlier for specific purposes such as university fees or a first home. The trustees can make income distributions for maintenance and education before the capital vesting age. A Letter of Wishes alongside the will tells trustees how you want income used without legally binding them.

Does the other parent automatically get custody and control of my children's money?

Custody (parental responsibility) is separate from financial control. If the other parent has parental responsibility, they retain care of the children — your will cannot override this. However, the financial trust in your will is controlled by your appointed trustees, not by the other parent. The other parent does not automatically gain access to the children's inherited money; your trustees decide how and when trust funds are distributed. If you have concerns about the other parent's ability to care for the children — due to addiction, abuse, or instability — a will cannot resolve that; you need specialist family law advice and potentially a court order.

What else should a single parent do alongside making a will?

Five essential steps: (1) Life insurance in trust — a term policy that pays out into a trust on death, so the money bypasses probate and goes directly to your trustees for the children. Cover should replace your income until the youngest child finishes education. (2) Pension death benefit nominations — update your workplace pension and any personal pension nominations with each provider; these pass outside your will. (3) Lasting Power of Attorney (health and welfare) — appoints someone to make medical decisions if you lose capacity; critical when there is no co-parent to rely on. (4) Lasting Power of Attorney (property and financial affairs) — someone to manage your finances and home if you are temporarily incapacitated. (5) Letter of Wishes — a detailed guide to your trustees and guardian about your values, your children's schools, financial habits you want instilled, and any special circumstances.

Your executor carries out your wishes. For a detailed checklist of what your executor will need to do, see our executor duties UK guide. If you want to reduce the burden on a family-member executor, a professional executor service can be included in your will alongside a trusted individual.

Related guides

Last reviewed: 28 June 2026. This guide covers the law of England and Wales only. It is information, not legal advice. If your estate involves trusts, significant business assets, foreign property, or contested family circumstances, consult a specialist solicitor.