When we teach children aged 7–11 about saving, one question comes up again and again from their parents: “Should we open a Junior ISA?”
It is a good question, and the honest answer is “it depends”. A Junior ISA is a brilliant long-term pot for some families and the wrong tool for others. This guide explains how it works in plain English, what the limit is for 2026/27, and, because this is what we do all day, how to help your child actually understand it.
What is a Junior ISA?
A Junior ISA (often shortened to JISA) is a tax-free savings account for a child under 18 who lives in the UK. A parent or guardian opens and manages it, but the money belongs to the child. Interest and investment growth are tax-free, and the money is locked away until the child turns 18.
For a child, that is a powerful idea: money that is set aside for the future and cannot be spent on a whim.
Why open a Junior ISA?
- Time is on your side. A child has up to 18 years before they can touch the money. Even small regular amounts add up: £50 a month for 18 years is £10,800 paid in, before any interest or investment growth.
- Growth is tax-free. Interest and investment returns inside the account are not taxed.
- The whole family can contribute. Grandparents, aunts, uncles and friends can all pay into the same pot, so birthday and Christmas money has somewhere useful to go.
- It protects the money from impulse spending. Because it is locked, it is there for the future, not the toy shop.
- It is a ready-made money lesson. Few things teach patience like a pot that is deliberately left alone to grow, which is why we like it as a teaching tool.
It is not right for everyone. If you may need the money before your child is 18, a flexible children’s savings account may suit you better.
How much can you put in? (2026/27)
You can pay in up to £9,000 per child between 6 April 2026 and 5 April 2027. Which? reports this is expected to stay the same until April 2031.
- The limit is shared between cash and stocks and shares Junior ISAs.
- Unused allowance does not carry over to next year.
- You can pay in as little as you like. £10 a month is fine.
- Anyone can contribute, including grandparents, aunts, uncles and friends.
- If someone pays in too much, the excess goes into a savings account in trust for the child and cannot be given back.
That last point is worth sharing with relatives before birthdays and Christmas.
Cash or stocks and shares?
Your child can have one of each, and you can split the yearly allowance between them however you like.
Cash Junior ISA
Works like a savings account. It earns interest and the balance does not fall. Which? lists the best rate at 4.15% AER (with eligibility conditions) and the best open-to-all online rate at 3.73%, as of 30 October 2026.
Stocks and shares Junior ISA
Invests in funds, shares or bonds. Over many years, investments have the potential to grow more than cash, but their value can go down as well as up, so your child could get back less than was paid in. Platform and fund charges apply.
A rough rule many families use: cash for money your child might need in a few years, investing for money that can sit for 10 years or more. Because Junior ISA money is locked until 18, a lot of families choose a mix. This is general information, not financial advice.
Who owns the money, and when can your child access it?
This is the part that surprises parents most.
| Age | What happens |
|---|---|
| Under 16 | You manage the account. The money is your child’s, but you cannot take it out. |
| From 16 | Your child can take over managing the account, but still cannot withdraw anything. |
| At 18 | The account becomes an adult ISA and your child can spend all of it, however they like. |
Source: GOV.UK, Junior Individual Savings Accounts.
At 18 your child can spend every penny, and you cannot legally stop them. The most valuable thing you can do is make sure they understand what the money is for long before then.
What to check before you open one
- The interest rate (AER) and whether it is fixed or variable.
- Eligibility conditions, such as postcode or membership.
- Minimum deposits.
- Short-term bonus rates that fall after a year.
- Charges on stocks and shares accounts.
- Transfer rules: moving provider means moving the whole pot, not just this year’s money.
Also check for a Child Trust Fund. If your child was born between 1 September 2002 and 2 January 2011, they may already have one. It can be moved into a Junior ISA for free, and the transfer does not use up this year’s allowance. If you cannot find it, HMRC offers a free tracing service on GOV.UK. Never pay a company to do it.
How to explain a Junior ISA to a child aged 7 to 11
Children this age are ready for the big ideas if you use pictures, not jargon. Here is how we would do it.
1. Use the “three jars” idea
One jar for spending (treats this week), one for saving (something they want in a few months), one for the far future. The Junior ISA is the far-future jar, the one with the lid screwed on tight until they are 18.
2. Explain “locked” with a tree
“If you plant a tree, you do not dig it up every week to see if the roots are growing. You leave it alone and it gets bigger.” That is what leaving money alone does.
3. Show them the number once a year
Sit down together when the statement arrives. “Last year it was this. Now it is this. Why do you think it grew?” This is where interest, or the ups and downs of investing, start to make sense.
4. Let them put something in
A slice of birthday money, or a pound of their pocket money going in each month. Money they have chosen to save feels different from money that just appears.
5. Talk about 18 early. Ask: “When you are 18, what would you like this money to do for you?” There are no wrong answers, but it plants the idea that it is a head start to be used wisely.
For more ideas, see how much pocket money children should get in the UK, how to talk to your child about money and our Early Bird Saver activity, which shows why starting young beats saving more.
Frequently asked questions
Can grandparents open a Junior ISA?
No. Only a parent or guardian can open one for a child under 16. Grandparents can pay into an existing account.
Can my child have more than one Junior ISA?
One cash and one stocks and shares, so two in total.
Can I take the money out early?
No. It is locked until 18, apart from cases of terminal illness or death.
Can my child have a Junior ISA and a normal savings account?
Yes. One does not stop the other.
Can my child open an adult ISA at 16?
Yes. From 16 they can hold an adult cash ISA as well as a Junior ISA.
A Junior ISA only works if your child understands why it exists. Saving, spending and investing are all part of the Smartmonies course: ten lessons for ages 7–11, taught one-to-one by qualified teachers or as an interactive digital course. The first digital lesson is free. For more ideas to try at home, browse our free money activities.
Figures and rules checked on 10 November 2026. This article is general information, not financial advice. Stocks and shares Junior ISAs put capital at risk. Always check with the provider before opening an account.
Sources: GOV.UK: Junior ISAs. MoneyHelper: Junior ISAs. GOV.UK: Child Trust Fund. Which?: Junior ISAs.