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CMC Invest Junior Cash ISA Review3.56% AER (Sep 2026)

Junior ISA from CMC Invest

Protection

FSCS

Up to £120,000

Min balance

£1

Max balance

£9,000

Access

Locked until 18

Interest paid

Monthly

Transfers in

Accepted

  • Savers happy with a £9,000 cap

Additional Info

The only top-rate Junior Cash ISA that can be opened and managed entirely via app. Deposits held with JPMorgan. FSCS protection up to £120,000.

Please verify all details with the provider – for more info read our Disclaimer

Estimated returns with CMC Invest's Junior ISA

Want to know how much interest you will receive with CMC Invest's Junior Cash ISA?

Estimated interest

£1,000 saved

£35.60

At 3.56% AER

£5,000 saved

£178

At 3.56% AER

£9,000 saved

£320

At 3.56% AER

Estimated over one year, assuming the rate stays the same and interest stays in the account. Amounts outside this account's minimum or maximum balance are left out.

Our Expert Opinion on CMC Invest Junior Cash ISA

This account suits parents or guardians who want a straightforward, tax-free home for a child's savings with a low entry point of just £1 and a reasonable 3.56% rate paid monthly. The annual deposit cap is £9,000, which is the standard Junior ISA allowance, so there is no flexibility beyond that. The big catch is the one baked into every Junior ISA: the money is completely locked away until the child turns 18, with the only exceptions being terminal illness or death. If you want a slightly higher rate, NS&I and Family Building Society both currently offer 3.70% on their Junior ISAs.

Compare Junior ISAs

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