Junior ISA

Suffolk Building Society Junior ISA (JISA) Review

A competitive Junior ISA from Suffolk Building Society. It ranks 11th of 22 Junior ISAs we track.

Variable rate

3.50%AER

Rate checked Oct 2026Got this account? Leave a review

Protection

FSCS£120,000

Min balance

£10

Max balance

No limit

Access

Locked until 18

Interest paid

Annually

Transfers in

Accepted

How It Stacks Up

Ranks 11th of 22

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.

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Worth Weighing Up

  • Con: The money is locked in until the child turns 18

Good to Know

For savers aged 0-17.

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Estimated returns with Suffolk Building Society's Junior ISA

What you could earn with Suffolk Building Society's Junior ISA (JISA).

Estimated interest

£1,000 saved

£35.00

At 3.5% AER

£5,000 saved

£175

At 3.5% AER

£10,000 saved

£350

At 3.5% AER

£50,000 saved

£1,750

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 Suffolk Building Society Junior ISA (JISA)

Jonny PeaseCo-Founder, DepositScout

Suffolk Building Society's Junior ISA pays 3.50%, which sits above the Junior ISA market average but 0.35% behind the category leader at 3.85%. It just clears inflation, coming in 0.40% above CPI of 3.1% as of Aug 2026, so the real return is modest. The account opens from just £10 and accepts transfers in from existing Junior ISAs, which is handy if you want to consolidate. The main catch is the one baked into every JISA: the money is locked until the child turns 18, so this suits parents thinking long-term rather than those wanting any flexibility.

Compare Junior ISAs

2 alternatives to Suffolk Building Society's Junior ISA (JISA)

Same type of account, closest on rate.

Common questions about the Junior ISA (JISA)

D

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