Can money be taken out of a Junior ISA before 18?

No. Money cannot be taken out of a Junior ISA before the child turns 18, and that applies to the parent or guardian who opened it just as much as to anyone else. The government's own guidance is blunt about it: "You cannot take money out of a Junior ISA until your child turns 18."¹

The reason is ownership. Everything paid into a Junior ISA belongs to the child, not to the adult who set it up or pays into it. One building society puts it plainly: "All money paid into the account belongs to the child and is unlocked on their 18th birthday."² A parent who needs the cash back for school costs, a deposit or an emergency has no route to it, because the money was never theirs.

There are exactly two exceptions, and both are serious: a terminal illness claim agreed on the child's behalf, and the death of the child. Everything else waits until the 18th birthday, when the account becomes an adult ISA and the child can take out any money in it.¹

The money belongs to the child, not the parent

A Junior ISA is not a savings account in the parent's name that happens to be earmarked for a child. The child is the account holder from the start, and the adult who opens it is the registered contact, a role closer to administrator than owner. That distinction is what makes early withdrawal impossible rather than merely discouraged.

The rule holds across the market. One independent guide notes that "Any money put into a junior Isa belongs to the child and can only be accessed by them when they turn 18."⁶ An investment platform states the same in its terms: "Withdrawals cannot be made until your child turns 18 and anything paid into a Junior ISA belongs to them."⁷ A wealth manager adds that once money is invested, "you can't take it out again, except in exceptional circumstances."⁸

At 18 the position changes completely. The account becomes an adult ISA, and the young adult decides what happens to the money, with no reference to the parent who funded it.⁹ That is worth knowing years in advance, because a Junior ISA built up over 18 years becomes the child's outright at the end, whatever they choose to spend it on.

From 16: the child can run the account but not withdraw

Turning 16 changes who controls the account, not who can spend it. The child can take over the running of the Junior ISA at 16, which means dealing with the provider, choosing investments and seeing the balance, but the money stays locked for another two years. The Scottish Government's guidance for young people sets out both halves of the rule in one line: "You can control your account from 16, but you'll only be able to take out the money after you're 18."³

This catches people out, because 16 is the age at which a young person can open an adult cash ISA in their own name. A Junior ISA is different: control arrives at 16, access at 18.¹⁰ Between those two birthdays the account is effectively run by the child under the same withdrawal restrictions that applied before.

In practice, the registered contact, usually a parent, hands over the login and stops making decisions, while the provider continues to refuse any withdrawal request. Providers describe the same sequence in their own words: money "cannot be withdrawn until the child is 18 and in control of the account."¹¹

Exceptions: terminal illness and death

The two exceptions are set in the Junior ISA rules themselves rather than left to providers, and they are narrow. The first is terminal illness. Where a claim is made on the child's behalf and accepted, withdrawals of any amount can be made by the registered contact at any time.⁴ The legislation describes acceptance as turning on the child being accepted by the Department for Work and Pensions as falling within section 72(5) of the Social Security Contributions and Benefits Act 1992, or evidence of terminal illness being supplied to the satisfaction of the tax authority.⁴

Providers repeat the same condition. One states that withdrawals before 18 "can only be made where a terminal illness claim made on behalf of the child has been agreed."¹² Another says no withdrawals are permitted before 18 "except in the event of terminal illness (when authority may be granted by HMRC) or death."¹³ A third confirms that withdrawals are not permitted before maturity at 18 "unless the child is diagnosed with a terminal illness and permission is given by HMRC to make withdrawals."¹⁴

The second exception is the death of the child, in which case the money is paid to whoever inherits the child's estate.¹⁵ The tax-free ISA inheritance rules that apply when an adult ISA holder dies do not apply here. There is one qualification: if the child was over 16 and married, which is possible in Scotland and Northern Ireland, the money goes to their spouse and the ISA inheritance rules do stand.¹⁵

Cash and stocks and shares Junior ISAs follow the same rule

The withdrawal age does not depend on what the Junior ISA holds. A cash Junior ISA and a stocks and shares Junior ISA both lock the money until 18, and both release it on the same terms. One building society states that "Withdrawals from a Cash Junior ISA are not allowed until the child becomes 18 years old."¹⁷ An investment platform describes the investment version identically: "The cash and investments in a Junior ISA remain locked away until the child turns 18. At that point your child's ISA becomes an adult ISA and funds can be withdrawn."¹⁸

What differs between the two is what happens at 18, not whether access is possible before it. Some providers move the money into an adult cash ISA on maturity, as one building society describes when it says the money "then transfers to an Easy Access Cash ISA for adults."¹⁹ Others leave the investments in place as an adult stocks and shares ISA.⁵ Either way, the child can withdraw from that point.

Is the withdrawal age the same at every Junior ISA provider?

Yes. The age 18 rule comes from the Junior ISA rules rather than from individual providers, so it does not vary between banks, building societies and investment platforms. One provider's guidance states simply that "withdrawals from a Junior ISA are not possible until the child reaches age 18."²⁰ Another says it is "normally only possible to make withdrawals from a Junior ISA once the child turns 18. The only exception is if the child becomes terminally ill or dies."²¹

Providers word their terms differently, and a few mention a right to cancel shortly after opening, which is a cooling-off right rather than a withdrawal route. One bank's support pages note that "apart from the right to cancel, money cannot be taken out of the account until the child turns 18."²² That right applies in the days after the account is opened, not years later when the money is wanted.

The practical consequence is that shopping around for a Junior ISA on the basis of early access is pointless. The choice between providers is about charges, investment options and service, not about when the money can be touched.²³ If a child has both a Junior ISA and a Child Trust Fund, the same access age applies to both, and the rules on holding both are worth checking before moving money between them.

What happens at 18

On the child's 18th birthday the Junior ISA becomes an adult ISA automatically, and the child can take out any money in it.¹ No parent or guardian permission is involved, and the registered contact's role ends. The account is simply the young adult's, and what they do with it is their decision.⁹

That makes the years before 18 a planning period rather than a waiting game. Money paid in cannot come back out, so the amount committed should be money the household can genuinely leave alone. For anyone weighing up how much to put in, the Junior ISA allowance sets the annual limit, and the rules on who can open one cover who can act as registered contact. Where a child is in local authority care, separate arrangements apply, and the guidance for children in care explains how those accounts work.

If a provider refuses a withdrawal that should be allowed, or handles a terminal illness claim badly, the complaints route for ISA providers sets out how to escalate the matter, including to the Financial Ombudsman Service.