What's the best way to invest for a child in the UK?

For most families, a Junior ISA (Stocks & Shares) is the best option because growth and dividends are tax-free. If your child doesn't have a Junior ISA yet, open one now. If they have a Child Trust Fund, consider whether transferring to a Junior ISA (if eligible) makes sense based on fund performance.

How much can I invest for my child?

For a Junior ISA, you can contribute up to £9,000 per tax year (£20,000 combined across all children's accounts if you have multiple). Child Trust Fund contributions are no longer accepted, but existing CTF accounts can continue to grow.

Junior ISA or Child Trust Fund — which is better?

If your child has only a CTF, a Junior ISA is likely better now because you can contribute up to £9,000/year (vs CTF's £3,600/year cap). If your child has a CTF worth more than £1,000, it may be worth keeping it and continuing contributions. See our Junior ISA vs CTF comparison for details.

Can my child invest at 15?

Yes, but only if they use a platform designed for teens. Most investment platforms require you to be 18+. However, some platforms like Trading 212 allow 15–17 year-olds to open their own account with parental consent. Alternatively, parents can open a Junior ISA for them.

📚 Guide | Last updated: March 2026 | 10 min read

Investing for Children UK 2026

If you want to invest for a child in the UK, the key decision is whether you need a Junior ISA, an existing Child Trust Fund review, or a simpler savings route for shorter-term goals. This guide shows which route fits which family.

Written by IMZA Invest. Last updated March 2026. Reviewed for UK parents building long-term savings and investing plans for children. Educational only — not financial advice.

⚠️ Not financial advice. IMZA Invest is not FCA regulated. Educational content only. Capital at risk. Full disclaimer

Quick Answer

If you have a child and haven't started investing, open a Junior Stocks & Shares ISA today. You can invest up to £9,000 per tax year, all growth and dividends are tax-free, and your child gets access at age 18. Most platforms charge £0–£24/year in fees.

Why Invest for Your Child?

Time is your child's biggest advantage. A lump sum invested at age 5 has 13 years to compound by the time they turn 18. With compound interest, £9,000 invested today could grow to £15,000–£20,000+ (depending on returns and fees) by age 18. Waiting until they're older costs you that compounding benefit.

Your Options: Junior ISA vs Child Trust Fund vs Regular Savings

1. Junior Stocks & Shares ISA (Recommended)

Best for: Families comfortable with stock market investment and wanting tax-free growth.

Annual limit: £9,000/year
Tax on growth: Zero (tax-free)
Tax on dividends: Zero
Access: Child gets money at 18
Fees: £0–£24/year depending on platform
Platforms: compare Trading 212, Vanguard, AJ Bell and Hargreaves Lansdown

Example: Invest £9,000/year in a balanced index fund for 13 years (ages 5–18). With 7% average annual returns, you'd have ~£180,000. With a regular savings account earning 4%, you'd have ~£127,000. The tax-free ISA wrapper saves you on tax and helps compounding work harder.

2. Child Trust Fund (For Existing Accounts)

Best for: Children who already have a CTF (opened before Jan 2011).

Annual limit: No new contributions (legacy only)
Tax on growth: Zero
Access: Child gets money at 18
Fees: Varies by provider

Note: CTF accounts are no longer opened. If your child has one, you can keep it and it grows tax-free until age 18.

3. Regular Savings Account

Best for: Emergency funds or short-term goals (age 16+).

Interest: 4–5% (varies by bank and account type)
Tax on interest: 20% (if interest exceeds your child's tax allowance)
Access: Usually age 16+
Risk: Low (bank-guaranteed)

Not ideal for long-term investing because interest rates don't match inflation or stock market returns. Use savings for an emergency fund, then invest the bulk in a Junior ISA.

How to Get Started

Choose a platform — Compare Junior ISA providers (fees, fund ranges, user experience)
Open an account — Takes 5–10 minutes online. You'll need your child's birth certificate and National Insurance number.
Choose investments — For most families, a low-cost balanced fund (60/40 stocks/bonds) or all-world index fund is a good starting point.
Set up monthly contributions — Even £200/month (£2,400/year) compounds significantly over 13 years.
Automate and check annually — Most platforms allow automatic contributions. Check once a year to rebalance or adjust.

Tax Benefits Explained

Why a Junior ISA saves money:

A regular Stocks & Shares investment (no ISA) would incur capital gains tax and dividend tax when you withdraw at 18.
A Junior ISA eliminates both, so more money compounds and stays in the account.
Example: £9,000 growing to £15,000 in a regular account = £6,000 gain. Capital gains tax at 20% = £1,200 tax bill. In a Junior ISA, you pay £0 tax.

Child Trust Fund transfer rules

If your child has a Child Trust Fund, do not assume it is the best place to leave the money forever. Review the provider, investment options and fees. In many cases you can transfer from a Child Trust Fund into a Junior ISA using the receiving provider's transfer process. The tax shelter stays intact if you transfer properly; it does not if you withdraw cash and improvise.

Risks and limitations parents should understand

Market risk: a stocks-based Junior ISA can fall in value before it rises
Access risk: the child controls the money at 18, not the parent
Behaviour risk: chasing performance usually hurts returns
Platform risk: higher fees quietly reduce long-term compounding

For Teens: Can My Child Invest Themselves?

Most investment platforms require you to be 18+. However:

Parents can open a Junior ISA for them (simplest option)
Some platforms accept 15–17 year-olds with parental consent — Trading 212 is one example
Your child can advise — Even if you control the account, your teenager can help choose investments, learn about markets, and be involved in decisions

See our guide on investing £100/month for practical tips on getting kids involved.

Internal Guides & Resources

Junior ISA Guide UK — Detailed rules, limits, and how to open one
Best Junior ISA Platforms 2026 — Compare fees, fund ranges, and user reviews
ISA Allowance 2026 — Understand annual limits across all ISA types
Stocks and Shares ISA Guide — How ISAs work (applies to Junior ISAs too)
How to Start Investing UK — General beginner guide

FAQs

Can I contribute more than £9,000/year to a Junior ISA?

No. The limit is a use-it-or-lose-it annual allowance. Unused allowance doesn't roll over.

What happens when my child turns 18?

The Junior ISA converts to a regular Stocks & Shares ISA. Your child can access the money whenever they want, but they can keep it invested if they wish. They can continue adding to it (up to £20,000/year as an adult).

Is a Junior ISA safe?

Yes. The funds are held separately from the platform's assets and are covered by FSCS protection (up to £85,000 per platform). However, stock market investments can go down as well as up. For a long-term horizon (13+ years), this risk is manageable, but real.

Can I open multiple Junior ISAs for one child?

No. Your child can have only one Junior ISA per tax year. You can switch providers, but only one account is active at a time.

Key Takeaways

Start now. Time is your child's biggest advantage. £9,000 invested today compounds significantly over 13 years.
Junior ISA is usually best. Tax-free growth, high annual limit (£9,000), and zero fees on most platforms.
Low barrier to entry. You don't need £10,000 upfront. Even £50–£100/month works. Automation makes it effortless.
Involve your child. Even if you control the account, let them learn. At 15+, they can help choose investments and understand markets.
Stick with index funds. For most families, a simple balanced fund or all-world index fund beats active trading and high fees.

Disclaimer: This content is for educational purposes only and does not constitute financial or investment advice. Always do your own research and consider consulting a qualified financial adviser before making investment decisions. Past performance does not guarantee future returns.