Junior Investment ISAs explained

Helping Your Child Build Their Future

A Junior Investment ISA (also called a Junior Stocks & Shares ISA) is one of the most effective ways to give children a strong financial start. It allows parents and guardians to invest for the long term, free from income tax and capital gains tax, with contributions locked away until the child’s 18th birthday.

Quick Links for Parents & Guardians

• What is a Junior Investment ISA?
• Key Benefits
• Why Choose a Junior Investment ISA?
• Points to Consider
• How to get started
• Common Questions
  

What Is a Junior Investment ISA?

• A Junior ISA is a tax-efficient investment account for children under 18.
  
• Can only be opened by a parent or legal guardian.
  
• Once opened, anyone – grandparents, relatives, or friends – can contribute.
  
• The money is locked until the child turns 18, when the account converts into an adult ISA in their name.

Key Benefits

• £9,000 annual allowance (2025/26) – total across any Junior ISAs held.
  
• Flexible contributions – set up regular payments or make larger, one-off contributions.
  
• Investment choice – choose your investment profile based on your and your family’s attitude to risk.
  
• Tax-efficient growth – no tax on income, dividends or capital gains.
  
• Hands-off investing – once set up, the account grows until the child takes control.

Why Choose a Junior Investment ISA?

• Long-term growth potential – investing over many years can help smooth out market fluctuations.
  
• Teach financial responsibility – the child gains control at 18, helping them understand the value of saving and investing.
  
• Contributions from family – grandparents and others can gift money directly into the ISA.

• Over the long term, investments tend to outpace cash, as the invested funds compound in growth.

Points to Consider

• The money is locked until 18 – there’s no access beforehand except in rare cases.
  
• If your child has a Child Trust Fund, it must be transferred to a Junior ISA.
  
• A child can only hold one Cash JISA and one Investment JISA at any given time.
  
• Like all investments, returns are not guaranteed.

How to Get Started

1. Apply for a Junior ISA here if you are a parent or guardian.
   
2. Provide your details and the child’s.
   
3. Choose your contribution method – regular or lump sum.
   
4. Pick your investment approach.
   
5. Watch the pot grow until the child reaches 18.

Common Questions

Q: Can grandparents contribute?

A: Yes. Once opened, anyone can add funds up to the annual limit.

Q: What happens at 18?

A: The Junior ISA becomes an adult ISA, and the child takes full control.

Q: Is the allowance per person or per child?

A: Per child. If you have two children, each can receive up to £9,000 in the same tax year.

Follow the journey of a Junior ISA here..