Child Trust Fund Maturity Guide 2026: What to Do at 18

Young people born between September 2002 and January 2011 are turning 18 and finding their Child Trust Fund -- a government savings account opened in their name at birth -- has matured and is now theirs to control. Many have no idea the account exists, and billions of pounds sit unclaimed in matured CTFs. Whether the balance is £500 or £10,000, knowing your options and the tax rules can make a meaningful difference to how you manage the money.

What is a Child Trust Fund?

The CTF was introduced in 2005 under the Labour government as a universal savings account for children. Every child born in the UK from 1 September 2002 was entitled to a government voucher:

• Initial voucher: £250 for most children, £500 for those in lower-income families.
• Top-up vouchers at age 7 (until the scheme changed).
• Parents, grandparents and others could contribute additional amounts up to the annual limit.
• The account was locked until the child turned 18 -- no withdrawals possible before maturity.

The scheme was closed to new applicants in January 2011 when the Junior ISA replaced it. However, existing CTF accounts continued to run, and by 2026 the later cohort of CTF holders are reaching maturity.

Three main types of CTF existed:

• Cash CTF: a savings account, earning interest. Lower growth potential but no investment risk.
• Stakeholder CTF: a default equity fund, required to diversify and cap charges at 1.5%. The majority of government-opened accounts defaulted into stakeholder funds.
• Self-select CTF: a stocks and shares account where the account holder (parent) chose the investments.

Finding a lost account

Surveys suggest a significant proportion of maturing CTF holders do not know who their provider is, particularly if the account was one the government opened on their behalf (where no parental contact was made).

HMRC maintains a tracing service. To use it:

1. Go to gov.uk and search 'Find a Child Trust Fund'.
2. You will need either the child's National Insurance number (issued automatically at age 16) or their date of birth and details of their address history.
3. HMRC responds by post or online with the provider's name and contact details.
4. Contact the provider to claim the account.

If you are 16 or 17, your parent or guardian can assist with the trace. Once you are 18, the account is yours to manage directly.

Option 1: Transfer to an adult ISA

The most tax-efficient step for most 18-year-olds is to transfer the CTF balance into an adult ISA. This transfer comes with a crucial benefit: it does not count against your £20,000 annual ISA allowance.

Normally, you can put up to £20,000 into ISAs in a tax year. A CTF-to-ISA transfer uses a specific additional permitted mechanism, and the CTF balance goes into the ISA on top of the standard allowance.

Time limit: You must make this transfer within 1 year of your 18th birthday. After that, you can still move the money into an ISA, but it will count against your standard £20,000 allowance for that tax year.

The practical steps:

1. Turn 18 and identify your CTF provider.
2. Open an adult Cash ISA or Stocks and Shares ISA with the provider of your choice.
3. Complete the ISA provider's CTF transfer form (your new ISA provider typically handles this).
4. The transfer completes in 15-30 days.

You do not have to use the same provider -- you can transfer from your existing CTF provider to whichever ISA provider offers the best rate or investment platform.

Option 2: Cash it out

Taking the money as cash is simple -- contact your CTF provider, confirm your identity, and request a withdrawal. The process typically takes 5-10 working days.

Tax on withdrawal: none. Withdrawals from a mature CTF are not subject to income tax or capital gains tax. The returns -- interest, dividends and investment growth -- accumulated inside the CTF tax-free, and that tax-free status applies to the withdrawal too.

Once you have the cash, be aware that if you reinvest it (in a bank account, investment account or property), future returns on that money will be taxable in the normal way. This is why the ISA transfer is more tax-efficient: keeping it within the ISA wrapper preserves the tax-free treatment going forward.

Option 3: Leave it where it is

After your 18th birthday, the CTF account does not automatically close. The money stays with the provider and continues to earn returns. However:

• The account is no longer a CTF and loses the CTF label.
• It transitions to a type of savings or investment account with the provider.
• Tax treatment going forward depends on the account type it converts to -- if it stays within an ISA wrapper (many providers do this automatically), returns remain tax-free.
• Some providers charge higher fees on post-18 legacy accounts than on standard ISA products.

Check with your provider what happens at maturity and what fees apply. If the account converts to a higher-fee product, it is usually worth transferring away.

Option 4: Invest it for the long term

For an 18-year-old, the CTF balance -- whether £500 or £5,000 -- represents a potential long-term investment opportunity. The most obvious vehicle is a Stocks and Shares ISA, which can hold the transferred balance plus future contributions.

Time horizon: if a young person invests their CTF balance in a globally diversified index fund at 18 and does not touch it until retirement at 67, they have a 49-year investment horizon. At a hypothetical 6% real return, £2,000 becomes approximately £33,000 in real terms. At 7%, it becomes £56,000. The power of compound growth over nearly five decades is substantial.

For young people not ready to invest, a Cash ISA with a competitive rate is a straightforward starting point. As financial literacy grows, moving some or all of the cash into a Stocks and Shares ISA becomes an option.

What if the balance is very small?

Some CTFs received only the initial government voucher (£250) and no additional contributions. After charges and potentially poor investment performance over 18 years, the balance might be surprisingly modest.

Even a small balance is worth claiming and transferring to an ISA -- it starts an ISA that can receive contributions in future years. And the habit of checking and managing a savings account is itself valuable for financial development at 18.

The tax treatment in more detail

During the CTF's life, all returns inside the account were free from:

• Income tax on interest.
• Income tax on dividends.
• Capital gains tax on investment growth.

When the account matures at 18, no tax event occurs simply from maturity. The 18-year-old does not receive a tax bill for 18 years of accumulated returns. The money is simply now accessible.

If the young person then deposits the cash into a bank account and earns interest, that interest is taxable (subject to the Personal Savings Allowance of £1,000 for basic-rate taxpayers). If they invest outside an ISA and make capital gains above the £3,000 CGT annual exempt amount, those gains are taxable. The CTF tax-free status applied to the pot while it was in the CTF -- it does not carry forward to wherever the money goes next, which is why the ISA transfer is so valuable.

The broader picture: Junior ISA holders

Children born after January 2011 had Junior ISAs (JISAs) rather than CTFs. JISAs also mature at age 18, converting to adult ISAs automatically (no separate transfer step required). If you are comparing notes with someone a few years younger who had a JISA rather than a CTF, their maturity process is slightly simpler -- the account rolls into an adult ISA without any action required.

For CTF holders, the extra step is worthwhile to ensure you choose the right ISA provider rather than defaulting to wherever your CTF happened to sit.

Sources

• HMRC: Child Trust Fund statistics and tracing service
• gov.uk: Child Trust Fund -- what happens at 18
• UK Finance: Junior savings and CTF maturity data
• HMRC: ISA additional permitted subscription guidance