Answers · UK 2025/26
What is the difference between a Junior ISA and a Child Trust Fund?
Child Trust Funds were the predecessor to Junior ISAs, opened automatically for children born within a specific historic date window, and are no longer available to open new -- if your child has an existing Child Trust Fund, you can either continue it or transfer the full balance into a Junior ISA, which usually offers a wider choice of providers and often better rates or investment options.
Full answer
Child Trust Funds (CTFs) and Junior ISAs (JISAs) serve the same basic purpose -- tax-free saving for a child, locked until age 18 -- but CTFs are now a closed, legacy product, while JISAs are the current standard product for new savings. **Child Trust Funds are closed to new accounts** CTFs were available for children born within a specific historic date window (broadly, children born in the UK between very early September 2002 and early January 2011), often with an initial government contribution paid into the account -- no new Child Trust Funds can be opened today; if your child was born outside that window, they were never eligible for a CTF and would use a Junior ISA instead. **Junior ISAs are the current product** Junior ISAs became available for children not eligible for (or without) a Child Trust Fund, and since CTFs closed to new entrants, JISAs are now the only new tax-free children's savings/investment wrapper available -- like CTFs, JISA funds are locked until the child turns 18, at which point the account (and full control of it) passes to the child. **Should you transfer an existing CTF to a JISA** Many CTF providers offer poorer rates, fewer investment choices, or higher charges than the current, more competitive JISA market -- transferring a Child Trust Fund's full balance into a Junior ISA is generally allowed and often improves the rate, investment choice, or fee structure available, though the FULL balance must transfer (you cannot split a CTF between a continuing CTF and a new JISA) and once transferred, it cannot be moved back to a CTF. **The combined annual allowance** A child can only have EITHER a Child Trust Fund OR Junior ISAs (a cash JISA and/or a stocks and shares JISA) at any one time, not both simultaneously -- the total amount that can be paid in across whichever account(s) the child holds is subject to a single combined annual Junior ISA allowance limit each tax year, shared across cash and stocks and shares JISA if both are held (or with a CTF, if that has not been transferred). **Worked example** A child born in 2005 has an existing Child Trust Fund with a relatively low interest rate and limited investment options, receiving contributions from family members each year. The parents research current market rates and find several competitive Junior ISA providers offering better rates or investment choice. They initiate a full CTF-to-JISA transfer, moving the entire existing balance across, after which future contributions go into the new JISA instead, subject to the same combined annual allowance that would have applied to the CTF. **Practical tip** If your child has a dormant or forgotten Child Trust Fund (common where the account was opened long ago and rarely reviewed since), check the current rate or investment performance against competitive Junior ISA options, and consider transferring if the JISA offers meaningfully better terms, since many CTF providers have not kept pace with the more competitive JISA market.
Try the calculator
This answer is informational only and does not constitute financial, tax or legal advice. Figures are for the 2025/26 UK tax year. See our methodology and sources.