Somewhere between packing for university and queuing for a provisional driving licence, most 18-year-olds in the UK are sitting on money they don't know exists. If you were born between 1 September 2002 and 2 January 2011, the government opened a savings account in your name before you could walk, dropped at least £250 into it, and then left it to sit — often forgotten by the parents who set it up, let alone the child who's now old enough to spend it. That account is a Child Trust Fund, and in 2026 a fresh wave of them is maturing as another birth-year cohort turns 18.
What a Child Trust Fund actually is
Child Trust Funds, or CTFs, were a Labour government scheme that ran from 2005 to 2011, automatically opened for every child born in the qualifying window whether or not their parents did anything about it. HMRC deposited an initial voucher — £250 for most families, £500 for those on lower incomes or with a disabled child — directly into a CTF, and children born before August 2010 also received a second top-up around their seventh birthday. Family and friends could add up to £9,000 a year on top, tax-free, the same annual allowance that now applies to Junior ISAs. The scheme was scrapped for new births from January 2011 onward, replaced by the Junior ISA, but every CTF opened before that cut-off kept running under its own rules. Parents got a choice of three account types when they set one up: a cash CTF that worked like an ordinary savings account, a stakeholder CTF that invested in a default low-cost fund with some built-in protection against market swings near maturity, or a full stocks and shares CTF with a wider range of investment options. Most families who never actively chose ended up in a stakeholder account by default, which mattered enormously for how the balance performed over the following eighteen years. A cash CTF opened in 2008 has spent most of its life earning next to nothing, while a stakeholder or shares-based account rode out the 2008 crash early and then caught most of the market recovery that followed.
Who has one, and when it matures
If your date of birth falls inside that September 2002 to January 2011 window, you almost certainly have — or had — a CTF, even if nobody in your family remembers opening it. Roughly six million of these accounts were set up across the scheme's life, and a large share were never actively managed: HMRC opened a default account with a provider it assigned automatically whenever parents didn't choose one themselves within a year. A CTF matures on the child's 18th birthday, at which point it stops being a Child Trust Fund and the money becomes fully accessible to its owner — not the parent, not whoever opened it, the young adult whose name is on the account. Anyone turning 18 in 2026 was born in 2008, which puts their account roughly two-thirds of the way through the scheme's active years, meaning the balance has usually had over a decade of investment growth or interest behind it.
How to find yours
Start with HMRC's own tracing tool rather than guessing which bank your parents might have used. The "Find a Child Trust Fund" service on GOV.UK asks for your National Insurance number and date of birth, and within a few working days it tells you which provider is holding your account — no need to remember anything about how it was set up in 2005. If you already know the provider, contact them directly instead; OneFamily and Forester Financial between them hold a large share of the accounts opened by parents who chose their own provider, while many of the default accounts opened automatically by HMRC ended up with OneFamily as well, after several of the original providers, including some High Street banks, stopped offering CTFs and transferred their books elsewhere. You'll need to prove your identity — a passport or driving licence plus proof of address usually covers it — and if your parents moved house since 2005, chase up any old paperwork before you start, because providers sometimes ask for the original CTF reference number even though HMRC's tracing tool doesn't require it. It's worth applying even if you're fairly sure your parents cashed in a CTF-adjacent scheme years ago, because the two are easy to confuse from memory. Some parents also opened a separate Junior ISA once those launched in November 2011, and it's entirely possible for a family to have started a CTF for an older sibling and a Junior ISA for a younger one without ever quite tracking which account belongs to which child. If HMRC's tool comes back empty and you're certain you qualify, phone their CTF helpline directly rather than assuming the account never existed — a surprising number of "no result" searches turn out to be a data-matching issue rather than a genuinely missing account.
Don't assume a small initial deposit means a small final balance.
A £250 voucher invested in a stocks and shares CTF back in 2008 has now had eighteen years to compound, and depending on which provider and fund it landed in, that alone can be worth several times the original deposit before anyone in the family added a penny. Cash CTFs grew far more modestly, particularly through the years of near-zero interest rates between 2009 and 2021, so the type of account matters as much as how long it's been open.
What happens if you don't claim it
Nothing dramatic, and nothing that puts the money at risk — but nothing helpful either. An unclaimed CTF doesn't get swept back to the Treasury or lost after some deadline; it simply keeps sitting with the provider under the same tax-free wrapper, usually rolled automatically into what providers call a "protected" or "matured" CTF account once the child turns 18. The catch is that these matured accounts are rarely the best available option. Interest rates and investment terms on legacy matured CTF products tend to be uncompetitive compared with what the same provider, or a rival one, offers on an ordinary adult ISA, precisely because there's no commercial pressure to make the default option attractive when the money is already sitting there. Consumer groups including MoneySavingExpert have flagged this repeatedly: providers have little incentive to chase you with better rates once your money is already parked, tax-free, on their books.
Cashing it in versus moving it into an ISA
Once you turn 18 you can withdraw the full balance as cash, transfer it into a standard adult cash ISA, or move it into a stocks and shares ISA — and which of those makes sense depends entirely on what you actually need the money for. If you're heading into a house deposit within the next two or three years, moving a stocks-and-shares CTF into cash removes the risk of a market dip wiping out your deposit right when you need it. If you're not planning to touch the money for five-plus years, staying invested rather than converting to cash is usually the better call, since historically equities have outpaced cash savings over that kind of horizon even accounting for the occasional bad year. Either way, transfer the balance into a proper adult ISA rather than leaving it in the matured CTF product — the tax-free status carries over automatically, so there's no reason to accept a mediocre legacy rate out of inertia.
The part parents don't always mention
Some families never tell their children the account exists at all, and it's worth being honest about why. A handful of parents contributed heavily to a CTF assuming they'd have some say over how the money got spent once their child turned 18 — school of thought, driving lessons, a deposit toward something sensible — only to discover the law makes no such allowance. The account belongs entirely to the child from their 18th birthday, with zero legal claim retained by whoever paid into it, and that mismatch between expectation and reality causes more family arguments than the Child Trust Fund scheme's architects probably anticipated. If you're a parent reading this with a CTF still open for a child approaching 18, that's a conversation worth having well before the birthday, not after.
What to check before you touch the money
Before transferring or withdrawing anything, get a clear statement from the provider showing the current balance, whether the underlying fund is cash or stocks and shares, and what the matured account's interest rate or charges actually are. Compare that rate against at least two other providers' adult cash ISA rates before deciding to leave the money where it is — a five-minute comparison can be worth hundreds of pounds over a couple of years if the legacy rate turns out to be well below the market. And if you can't find any record of a CTF despite being certain you were born in the qualifying window, don't give up after one search: HMRC's tool occasionally returns no result for accounts opened through certain now-defunct providers, and a follow-up call to their CTF helpline usually resolves it within a week or two.