ISAs UK: Types, the Allowance, Transfers and Which ISA to Use

Child Trust Funds: Finding One and What Happens at 18

Child Trust Funds explained: who has one, how to find a lost account through HMRC's free tool, what happens when it matures at 18, the choices then (take the money or move it to an adult ISA), and moving a Child Trust Fund into a Junior ISA before then.

Savings and investment information is for educational purposes only. The value of investments can go down as well as up. Cash savings up to £85,000 per person per institution are protected by the FSCS.

Child Trust Funds were the government’s long-term savings accounts for children before Junior ISAs. The scheme closed in 2011, but the accounts still exist, and many are maturing as their owners turn 18.

The rules

Child Trust Funds are tax-free accounts for children born between 1 September 2002 and 2 January 2011; the scheme closed in 2011, but up to £9,000 a year can still be added. The money belongs to the child, who can take control at 16 and take it out at 18.
  • Children born between 1 September 2002 and 2 January 2011 have one.
  • You can still add up to £9,000 a year.
  • The money belongs to the child; they can take control at 16 and take the money out at 18.
  • There's no tax on its income or gains, and it doesn't affect your benefits.
  • A child can't have both a Child Trust Fund and a Junior ISA; a Child Trust Fund can be transferred into a Junior ISA.

Finding a Child Trust Fund

If you know the provider, contact it directly. If you don’t, you can ask a parent or guardian, or use HMRC’s free online tool to find out where the account was opened. You can use it if you’re 16 or over and looking for your own, or a parent or guardian of a child under 18. You’ll need a National Insurance number, and a parent or guardian needs the child’s full name, address and date of birth and any previous names.

HMRC usually replies by letter within 3 weeks of an online request (postal requests take longer); if you’ve heard nothing after 6 weeks, you can write to HMRC. The tool tells you the provider, not how much is in the account.

At 18

On the 18th birthday the Child Trust Fund matures. The owner automatically takes over the account and no more money can be paid in. They can then:

  • take the money out, or
  • transfer it to an adult ISA, where it stays tax-free: see the ISAs guide.

The Child Trust Fund then closes. Until the owner decides, the money stays in an account that nobody else can access. If they won’t be able to manage their money at 18, a parent or relative needs to apply to the Court of Protection (in Scotland, the Office of the Public Guardian; in Northern Ireland, the Office of Care and Protection).

Before 18: moving to a Junior ISA

A Child Trust Fund can be transferred into a Junior ISA at any time, and a child can’t have both. The Junior ISA provider arranges the transfer. The yearly limit for new payments is the same for both, £9,000, so the reason to move is usually a better rate, lower charges or a wider choice of investments.

Sources

  1. GOV.UK: Child Trust Fund
  2. GOV.UK: Find a Child Trust Fund
  3. GOV.UK: What happens when your child is 18

Figures and rules on this page also come from these sources, last checked on 29 September 2026. How we check facts.