Bath Building Society Junior Cash ISA Review

A top-paying Junior ISA from Bath Building Society. None of the other 29 Junior ISAs we track pays more.

Variable rate

4.15%AER

Protection

FSCS£120,000

Min balance

£1

Max balance

£9,000

Access

Locked until 18

Interest paid

Annually

Transfers in

Accepted

How It Stacks Up

Ranks 1st of 30

Junior ISAs we track

Top rate
This account 4.15%
UK CPI (Aug 2026)
3.10%
Pays 1.05% more
Average Junior ISA
3.29%
Pays 0.86% more
Best Junior ISA
4.15%
About the same

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

Restricted to children who live, work or study in Bath (BA1/BA2), or whose parent/guardian has been a Bath Building Society customer for at least 12 months. Opened by a parent/guardian for under-16s; 16-17s in Bath can open their own. UK residents only. Becomes an Instant ISA at 18 if no instructions.

Please verify all details with the provider – see our Disclaimer

See all Bath Building Society accounts

Estimated returns with Bath Building Society's Junior ISA

What you could earn with Bath Building Society's Junior Cash ISA.

Estimated interest

£1,000 saved

£41.50

At 4.15% AER

£5,000 saved

£208

At 4.15% AER

£9,000 saved

£374

At 4.15% 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 Bath Building Society Junior Cash ISA

Jonny PeaseCo-Founder, DepositScout

Bath Building Society's Junior Cash ISA is the market-leading Junior ISA right now at 4.15%, which puts it 1.05% above CPI inflation of 3.1% (Aug 2026), so the money is genuinely growing in real terms. It opens from just £1 and accepts transfers in from other Junior ISA providers, which makes it easy to consolidate an existing pot. The obvious catch is that the money is locked until the child turns 18, so this suits parents who are comfortable with that long-term commitment and simply want the best available rate for their child's savings.

Compare Junior ISAs

2 alternatives to Bath Building Society's Junior Cash ISA

Same type of account, closest on rate.

Common questions about the Junior Cash ISA

D

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