A quick recap of the Junior ISA

A Junior ISA (JISA) is the most widely used tax-efficient way to save or invest for a child in the UK. Anyone can contribute, up to a combined annual allowance across cash and stocks and shares JISAs, and all growth and income within the account is free of UK income tax and capital gains tax. The money belongs to the child from the moment it is paid in, and it becomes automatically accessible to them at age 18, when the JISA typically converts into an adult ISA in their own name. This last feature is central to thinking about whether a JISA alone is the right vehicle for everything you want to save.

Junior SIPPs

A Junior SIPP allows a parent, grandparent or other contributor to save into a pension in a child's name. Contributions receive basic rate tax relief added automatically, even though the child has no earnings of their own, which can make it a surprisingly efficient long-term wrapper. The trade-off is total inaccessibility for decades: the money is locked away until the child reaches normal minimum pension age, likely to be significantly higher than today's by the time a young child retires. A Junior SIPP suits families who see this purely as a very long-term head start on retirement saving, rather than money that could ever help with a house deposit or university costs.

Saving in the parent's own name

One straightforward alternative, or complement, to saving directly for a child is to save or invest within your own ISA. This keeps the money under your legal control indefinitely; you decide when, and if, to pass it on, and there is no automatic handover at age 18. The trade-off is that the money is legally yours, not the child's, so it does not build the child's own asset base directly and could be considered as part of your own estate for inheritance tax purposes, unless later gifted.

Premium Bonds for children

Premium Bonds can be bought for a child by a parent or legal guardian, with any prize winnings tax-free. They offer no guaranteed return, since returns come in the form of a monthly prize draw rather than interest, but they are simple, capital is secure (backed by NS&I, a government-backed institution), and many families find them an appealing, low-effort gift for grandchildren in particular.

Bare trusts

A bare trust is a simple legal structure where assets are held by a trustee (often a parent or grandparent) on behalf of a named child beneficiary. The child becomes entitled to the assets absolutely, usually at age 18, similar in spirit to a JISA, but a bare trust can hold a much wider range of assets and is not subject to the same annual contribution limits. Income and gains are generally treated as the child's own for tax purposes, subject to an important exception described below. Bare trusts are more complex to set up and administer than a JISA, so they tend to suit larger sums or specific family circumstances, and often benefit from professional advice.

The £100 rule on parental gifts

There is a specific anti-avoidance tax rule that anyone saving for their own child should know: if a parent gives money to their own child (outside a JISA or pension) and that money generates more than £100 of income in a tax year, the entire amount of that income is taxed as the parent's own income, not the child's. This rule does not apply to gifts from grandparents, other relatives or friends, only from parents, and it does not apply to money held within a JISA. It is designed to stop parents shifting large amounts of savings into a child's name purely to use the child's own tax-free allowances. Families saving significant sums for children outside a JISA should bear this rule in mind when deciding how to structure gifts.

Weighing up control versus the child's own entitlement

A key theme across all these alternatives is the trade-off between the child having full, guaranteed entitlement to money at 18 (as with a JISA or bare trust) versus a parent retaining ongoing control and flexibility (as with saving in their own name). There is no universally right answer; it depends on your view of the amounts involved, your child's likely maturity at 18, and what you are ultimately saving for, whether that is a house deposit, university costs, or simply a general financial head start.

Key takeaways

  • A Junior ISA is tax-efficient and simple, but the child gains full, unconditional access to the money at age 18.
  • A Junior SIPP offers pension tax relief but locks money away for decades, until the child reaches normal minimum pension age.
  • Saving in a parent's own ISA keeps control with the parent indefinitely, at the cost of it not being the child's own asset.
  • Premium Bonds and bare trusts offer further alternatives, each with their own access and tax characteristics.
  • Income above £100 a year from money a parent (not a grandparent) gives directly to their child is taxed as the parent's own income, outside a JISA.