Junior ISA

OakNorth Bank Junior Cash ISA Review

A competitive Junior ISA from OakNorth Bank. It ranks 11th of 24 Junior ISAs we track.

Variable rate

3.50%AER

Rate checked Oct 2026Got this account? Leave a review

Protection

FSCS£120,000

Min balance

£0

Max balance

£9,000

Access

Locked until 18

Interest paid

On maturity

Transfers in

Accepted

How It Stacks Up

Ranks 11th of 24

Junior ISAs we track

Above average
This account 3.50%
UK CPI (Aug 2026)
3.10%
Pays 0.40% more
Average Junior ISA
3.23%
Pays 0.27% more
Best Junior ISA
3.85%
Pays 0.35% less

Inflation: ONS. Averages and best rates: accounts on DepositScout.

Compare Junior ISAs

Pros and cons

  • Pro: New and existing savers
  • Con: The money is locked in until the child turns 18

Good to Know

All money paid into the account belongs to the child and can’t be given back. When the child reaches 18, the account will change to an adult Cash ISA Saver. They’ll be able to continue saving tax free and will be able to withdraw money.

Please verify all details with the provider – see our Disclaimer

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Estimated returns with OakNorth Bank's Junior ISA

What you could earn with OakNorth Bank's Junior Cash ISA.

Estimated interest

£1,000 saved

£35.00

At 3.5% AER

£5,000 saved

£175

At 3.5% AER

£9,000 saved

£315

At 3.5% AER

Estimated over one year, if the rate stays the same and interest is left in. Amounts outside the account's minimum or maximum aren't shown.

Our Expert Opinion on OakNorth Bank Junior Cash ISA

Jan WatermannCo-Founder, DepositScout

OakNorth Bank's Junior Cash ISA pays 3.50%, which sits above the Junior ISA market average but 0.35% behind the category leader at 3.85%. With CPI at 3.1% (Aug 2026), the rate does at least beat inflation by 0.40%, which is a reasonable baseline for a long-term children's account. The annual subscription cap of £9,000 applies, and the fundamental catch is that the money is locked until the child turns 18 with no earlier access. If you want to shop around, CMC Invest's Junior Cash ISA is currently at 3.56%.

Compare Junior ISAs

2 alternatives to OakNorth Bank's Junior Cash ISA

Same type of account, closest on rate.

Common questions about the Junior Cash ISA

D

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