Taking ownership of savings when a child becomes an adult depends on who legally owns the account. In England, a Junior ISA belongs to the child from opening and becomes accessible at 18, while money in a parent’s own savings account may remain under the parent’s control. Knowing the distinction helps you take the right next step with confidence.
Who owns savings at age 18?
The account name provides the first answer. A Junior ISA belongs to the child from the day it opens, even where a parent is the registered contact, meaning the adult who receives letters and gives instructions before adulthood.
Junior ISAs become adult ISAs
At 18, a Junior Cash ISA or Junior Stocks and Shares ISA matures into an adult ISA. The young adult can withdraw it, leave it where it is, or transfer it to another ISA provider after identity checks.
A labelled savings pot may stay yours
Money held in Mum’s, Dad’s or a grandparent’s personal savings account remains controlled by that named adult. Calling it “Sam’s university money” does not by itself make Sam the legal owner at 18.
A Junior ISA is the child’s money, not the registered contact’s money. A savings account in an adult’s sole name is usually the adult’s money unless a completed gift or trust arrangement shows otherwise.
The name on an account is important, but it is not always the whole story of savings ownership. The legal owner of a savings account may be a parent or grandparent, while the facts may show that money was put aside as gifted money for children. Clear records matter: a note saying the money was an unconditional gift, transfers labelled with the child’s name, statements and correspondence can help establish the intention. A parent savings account used simply as a convenient holding place does not automatically create a bare trust, but an adult should not assume they can keep money that was genuinely given to the child.
Where the amounts are substantial or family members disagree, legal advice may be needed before funds are moved.
Account type decides what changes at 18
Compare the main savings arrangements
| Savings arrangement | Legal owner | What changes at 18 | Who can act before 18 |
|---|
| Junior ISA | Child | Matures to adult ISA | Registered contact |
| Child Trust Fund | Child | Young adult takes control | Registered contact |
| Child bank account | Usually child | Provider terms apply | Varies by account |
| Parent’s own savings account | Named adult | Nothing automatic | Named adult |
| Bare trust | Beneficiary child | Right to funds at 18 in England | Trustees |
| Premium Bonds in child’s name | Child | Young adult manages NS&I account | Parent or guardian |
Gifts can have different tax rules
What happens as the 18th birthday arrives
Before 18
Registered contact usually deals with provider
At 18
ID checks and access update
After 18
Young adult chooses to keep, transfer or withdraw
Getting access after the 18th birthday
Start with paperwork, not a withdrawal request. Most providers need the young adult to pass identity checks before they will release, transfer or reinvest funds.
Find account numbers, old statements, emails, passbooks and any NS&I number. The young adult should prepare a passport or driving licence, proof of address, date of birth and a UK bank account in their own name.
If savings access at 18 does not work immediately, avoid making repeated withdrawal requests and deal with the provider’s checks first. An account can be restricted where the date of birth, address or name does not match its records, particularly after a house move, a deed poll or a change in the young adult’s surname. Ask the provider what identity checks it needs and whether it can trace an account using an old address, National Insurance number or previous account reference.
For a lost Child Trust Fund or an old NS&I account, retain any statements and use the provider’s official tracing process. If a Junior ISA maturity payment appears delayed, the young adult should contact the provider directly, as the registered contact cannot normally give instructions after the 18th birthday.
Choose what the money should do next
There is no automatic best choice. The right home for the money depends mainly on when it will be needed and whether the young adult can accept changes in value.
Keep cash needed soon in cash
A transfer preserves the ISA wrapper, whereas withdrawing ends that protection for the withdrawn amount. Check whether the receiving provider accepts ISA transfers before moving anything.
Invest only for a longer horizon
A Stocks and Shares ISA can suit money not needed for at least five years. Its value can fall, sometimes sharply, so it is not a safe place for next term’s rent.
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Useful for this topic
A plain-English personal finance book can help a new adult compare saving, investing and borrowing before committing their matured ISA money.
- Explains how ISA tax wrappers differ from ordinary savings accounts
- Helps set aside an emergency cash buffer before taking investment risk
- Supports a joint family conversation without deciding who owns the money
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Taking control of savings is also a chance to agree practical financial boundaries. Before withdrawing a matured Junior ISA, a young adult can list the money needed for rent, travel, tuition, a driving test or an emergency buffer over the next 12 months. Cash required soon is generally better kept accessible, while money for a longer-term goal may be transferred within an ISA or invested only after the risks are understood.
Parents can offer guidance without treating the balance as theirs to direct, and the young adult can explain their plan rather than feeling pressured to spend or hand over the money. This approach supports financial independence while keeping family expectations clear.
Frequently asked questions
Does my child get all savings at 18?
A child gets control at 18 of savings they legally own, such as a Junior ISA or Child Trust Fund. Money in a parent’s sole account does not automatically transfer, even if it was intended for them.
Can a parent withdraw a junior ISA after 18?
No, a parent cannot withdraw a Junior ISA after the account holder turns 18. The young adult must complete the provider’s identity checks and give the instruction themselves.
How long does junior ISA access take at 18?
Straightforward identity checks often take between 3 and 10 working days. Delays are more likely where the provider has an old address, a different name spelling or incomplete documents.
Should I cash in a matured junior ISA?
Cash in a matured Junior ISA only if the money is needed or a better home has been checked. An ISA transfer can retain its tax-free status, while a withdrawal usually removes that protection.
Can grandparents give money without the £100 rule?
Gifts from grandparents are generally outside the parental £100 income rule. The rule can apply to income from a parent’s gift while the child is under 18 and unmarried.
This guidance is less suitable where money sits in a formal discretionary trust, a bare trust with disputed records, a child’s court settlement, or an active family, probate or safeguarding dispute. Specialist legal advice may be needed before anyone transfers or withdraws money.
Check ownership, then choose calmly
The best first move is a short account-by-account list. Record the provider, account holder, balance, account number and whether the money may be needed within one, three or five years.
- Junior ISAs and Child Trust Funds belong to the child and pass into their control at 18.
- A parent-held savings pot needs evidence of a gift or trust before ownership can be assumed.
- Identity checks, correct address details and account references come before any transfer or withdrawal.
- Compare cash needs and investment time frames before giving up ISA tax protection.
Further reading
If you want to learn more about this topic, these sources may interest you:
