Best Junior ISA for young people. Find the best rates today
Banking Savings

Best Junior ISA: 4.5% Coventry BS

Finding the best Junior ISA can make all the difference when securing your child’s financial future. Whether you’re looking to build a nest egg for university, a first car, or give them a strong financial start in adulthood, Junior ISAs offer a tax-free way to save or invest on their behalf. But with so many options available, how do you choose the right one? This guide will walk you through everything you need, from understanding a Junior ISA to the key factors to consider before opening an account.

Best Junior ISA Rates

  • Coventry Building Society – Junior Cash ISA – 4.5%
  • Nottingham Building Society – Junior Cash ISA – 4.5%
  • Skipton Building Society – Junior Cash ISA – 4.25%
  • NS & I – Junior Cash ISA – 4.00%
  • Tesco Bank – Junior Cash ISA – 4.00%

What is a Junior ISA?

A Junior Individual Savings Account (Junior ISA or JISA) is a tax-free savings or investment account designed for children under 18 living in the UK. Introduced in 2011 to replace the Child Trust Fund, a Junior ISA helps parents, guardians, and family members save or invest money on behalf of a child, with the added benefit that any interest, dividends, or capital gains earned are entirely tax-free.

There are two types of Junior ISAs:

  1. Cash Junior ISA: Works like a traditional savings account where you earn tax-free interest on the money saved.
  2. Stocks and Shares Junior ISA: This allows you to invest in the stock market, with the potential for higher returns. However, it carries a greater risk than a cash ISA.

Children can have one of each type, but the combined contributions cannot exceed the annual limit, which for the 2024/25 tax year is £9,000. The money belongs to the child, but they cannot access it until they turn 18, at which point the Junior ISA automatically converts into an adult ISA.

10 Most Important Things to Know When Choosing the best Junior ISA

  1. Type of Junior ISA: Decide between a cash ISA for stability or a stock and shares ISA for potential growth. Consider your risk tolerance and the child’s time horizon.
  2. Interest Rates & Investment Performance: Compare interest rates for cash ISAs to ensure competitive returns. Review historical performance and fund options for stocks and shares ISAs.
  3. Costs and Charges: Stocks and shares ISAs often come with management fees, platform charges, or fund fees. Understand how these can affect long-term returns.
  4. Contribution Limits: The annual contribution limit is currently £9,000. Anyone can make contributions, but the total must not exceed this cap.
  5. Transferability: You can transfer a Junior ISA from one provider to another to secure better rates or investment options without losing tax-free status.
  6. Access Restrictions: The money is locked in until the child turns 18. Ensure you’re comfortable with this lack of flexibility.
  7. Provider Reputation: To ensure reliability over the years, choose a provider with strong customer service, solid financial stability, and positive reviews.
  8. Parental Responsibility: Only a parent or legal guardian can open a Junior ISA, but anyone can contribute.
  9. Impact of Inflation: Consider how inflation may erode the value of cash savings over time. A stocks and shares ISA might help combat this over the long term.
  10. Ethical Investment Options: If investing, some providers offer ethical or socially responsible funds, which might align with your values.

Best Junior ISA Interest Rates

ProviderMore Information
Coventry Building Society – Junior Cash ISA – 4.5%– 4.50% Tax-free p.a./AER (Variable)
– Min £1 – Max £9,000 operating balance
– Interest is paid annually
– Open by post or in-brach
Nottingham Building Society – Junior Cash ISA – 4.5%– 4.50% Interest rate gross/tax-free p.a./AER
– Open account with £1
– Open account in branch only
Skipton Building Society – Junior Cash ISA – 4.25%– 4.25% tax-free pa/AER variable
– Open from £1
– Interest paid annually
NS & I – Junior Cash ISA – 4.00%– 4.00% tax-free/AER, variable
– Min £1 – Max £9,000 operating balance
– Interest is paid annually
– Apply online
Tesco Bank – Junior Cash ISA – 4.00%– 4.00% Interest rate gross/tax-free p.a./AER
– Open account with £1
– Manage your account online

Savings Interest Calculator

Want to know how much your savings could grow over time? Use our Savings Interest Calculator to estimate your potential returns based on your deposit amount, interest rate, and investment duration.

How It Works:

  1. Enter your initial deposit – This is the amount you plan to save.
  2. Select an interest rate – Choose the rate from one of the accounts listed above or enter your own.
  3. Choose your savings duration – Enter the number of months or years you plan to keep your money invested.
  4. See your results instantly! – The calculator will show you how much interest you’ll earn and your total balance at the end of the term.
  5. Get your results to your email – enter your name and email address and we’ll send you a copy of your results.

This tool makes it easy to compare different accounts and find the best option for growing you

Please enable JavaScript in your browser to complete this form.
Selected Value: 4 %
Selected Value: 10 years
Enter your name and email address to receive your calculations.

Frequently Asked Questions

A parent or legal guardian can open a Junior ISA for a child under 18 in the UK. Once opened, anyone (family, friends) can contribute.
The annual contribution limit for the 2024/25 tax year is £9,000 across both cash and stocks and shares ISAs combined.
No. However, you can transfer a Child Trust Fund into a Junior ISA if you prefer the flexibility or rates offered by Junior ISAs.
The Junior ISA automatically converts into an adult ISA. The child gains complete control and can continue saving, investing, or withdrawing money.
Cash Junior ISAs are protected by the Financial Services Compensation Scheme (FSCS) up to £85,000 per provider. Stocks and shares ISAs carry investment risks but are also covered by the FSCS for provider failure (not investment losses).
Yes, you can transfer a Junior ISA between providers anytime without losing the tax-free status. Always check if there are exit fees.
No. All interest, dividends, and capital gains within a Junior ISA are tax-free.
HMRC will contact you to withdraw the excess funds, and any interest or gains on the excess may be subject to tax.
The parent or guardian manages the account until the child turns 16. From 16, they can manage it but can’t withdraw funds until 18.
You can keep the Junior ISA open, but you can only make new contributions if you are still a UK resident.

About the author

Sean

I'm Sean, a Senior Client Service Manager with over a decade in finance. When not at work, I'm passionate about helping people achieve financial independence through my writing at Budget Dynamo. Outdoors, you'll find me cycling and running, connecting with nature and life's balance. Join me on the path to financial empowerment and a fulfilled life.

Add Comment

Click here to post a comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.