There are several tax-efficient options: pay into a Junior ISA the parents have opened, start a Junior SIPP, or use a bare trust or designated account. Each has different rules on access, control and tax. Regular gifts can also reduce your estate for inheritance tax, so the right route depends on your goals.
The short answer
- Grandparents can contribute to a Junior ISA, start a Junior SIPP, or use a bare trust.
- A Junior SIPP adds 20% tax relief, turning £2,880 into £3,600 a year for the child.
- A bare trust gives you more control over timing but makes the gift the child’s in law.
Helping a grandchild financially is one of the most rewarding things you can do with your money, and done thoughtfully, it can be remarkably tax-efficient for both of you. The right approach depends on what you want to achieve: a pot for university or a first home, a very long-term head start on a pension, or simply a way to pass on wealth while reducing a future inheritance tax bill. There is no single best answer, but a handful of well-established options cover most situations.
The main ways to invest for a grandchild
Your choices range from accounts the child can spend at 18 to ones they cannot touch for decades. Investing for a child can be as simple as contributing to a Junior ISA the parents have already opened, or as deliberate as starting a pension that will not mature until they are in their late fifties. Because only a parent or guardian can open a Junior ISA, grandparents usually contribute to an existing one rather than opening it themselves: our answer on what a Junior ISA is explains how that works. The table below compares the main routes.
Ways to invest for a grandchild (2026)
| Option | Who controls it | When they can access it | Key point |
|---|---|---|---|
| Junior ISA (contribute to) | Parent, then child at 16 | Age 18 | £9,000 a year limit, fully tax-free |
| Junior SIPP (pension) | Parent, then child | Age 57+ (from 2028) | £2,880 a year plus tax relief |
| Bare trust / designated account | You, as trustee | Age 18, or when agreed | No contribution limit; child’s for tax |
| Premium Bonds | You or the parent | Any time, via the parent | No returns guaranteed; prizes tax-free |
Each route strikes a different balance between control, access and tax. A Junior ISA hands the money over at 18, whether or not you think they are ready; a bare trust gives you more say over timing but makes the gift legally the child’s from the outset; a pension locks the money away for the longest time but buys the most valuable head start of all.
Junior ISAs and Junior pensions
The two tax-sheltered accounts are the workhorses. A Junior ISA lets up to £9,000 a year grow completely free of tax, with the child gaining access at 18, ideal for education costs or a house deposit. A Junior SIPP is a pension for a child: you can pay in up to £2,880 a year, and the government tops it up with 20% tax relief to make £3,600, even though the child pays no tax. Because that money then has half a century to compound before they can draw it, a surprisingly small contribution can grow into a substantial retirement fund. If you are choosing what to hold inside either account, our guide to getting started covers the basics of funds and risk.
- 1
Decide what the money is for
University and first homes point towards a Junior ISA; a lifelong head start points towards a pension.
- 2
Decide how much control you want
A bare trust lets you act as trustee; a Junior ISA passes full control to the child at 18.
- 3
Decide how much you can commit
Regular modest amounts, topped up by other relatives, add up over a child’s long time horizon.
- 4
Consider the effect on your estate
Gifts can reduce a future inheritance tax bill, but weigh that against your own needs first.
The inheritance tax angle
For many grandparents, giving during their lifetime is also a way to pass on wealth efficiently. Money you gift into a grandchild’s account leaves your estate, and provided you survive seven years it normally falls outside inheritance tax altogether. Several allowances make this easier: you can give away £3,000 a year under the annual exemption, make small gifts of up to £250 to any number of people, and importantly, give away regular sums from surplus income without limit, as long as the gifts come from income rather than capital and do not affect your standard of living. With unused pensions due to be drawn into the inheritance tax net from April 2027, lifetime gifting is likely to become a more prominent part of planning. Our guide to reducing inheritance tax legally sets out the rules, and the inheritance tax planning pillar goes deeper.
Gifts from surplus income
One of the most under-used exemptions lets you make regular gifts straight out of your income, funding a grandchild’s Junior ISA each month, say, with no inheritance tax and no seven-year wait, provided the gifts are habitual and you can still comfortably meet your own outgoings.
Whichever route you choose, remember the money is a genuine gift: once it is in the child’s Junior ISA or a bare trust, you cannot get it back. Balance your generosity against your own retirement needs first. Investments can fall as well as rise, and this is information, not personal advice. If you would like help weaving gifts to grandchildren into a wider plan, Vetted Wealth’s free service matches you with independently vetted, FCA-regulated advisers through our investment management network.
In summary
- Grandparents can contribute to a Junior ISA, start a Junior SIPP, or use a bare trust.
- A Junior SIPP adds 20% tax relief, turning £2,880 into £3,600 a year for the child.
- A bare trust gives you more control over timing but makes the gift the child’s in law.
- Lifetime gifts can reduce your estate, the £3,000 exemption and gifts from income both help.
- The money is an outright gift, so provide for your own needs before giving it away.
Sources and further reading
- Investing basics MoneyHelper
- Check the Financial Services Register Financial Conduct Authority
- Individual Savings Accounts GOV.UK
Read the full guide
For the complete picture, see our in-depth guide: Investing for Children.
Speak to a vetted investment management specialist
This is free information, not personal advice. When you’re ready, we’ll match you with an independently vetted, FCA-regulated specialist, free, and with no obligation.
