Cash ISA

Suffolk Building Society Stepping Stone ISA (18-24 year olds) Review

A cash ISA from Suffolk Building Society. It ranks 87th of 137 cash ISAs we track.

Variable rate

2.60%AER

Rate checked Oct 2026Got this account? Leave a review

Protection

FSCS£120,000

Min balance

£10

Max balance

£150,000

Access

Instant

Interest paid

Annually

Transfers in

Accepted

How It Stacks Up

Ranks 87th of 137

Cash ISAs we track

Below average
This account 2.60%
UK CPI (Aug 2026)
3.10%
Pays 0.50% less
Average cash ISA
2.98%
Pays 0.38% less
Best cash ISA
4.87%
Pays 2.27% less

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

A better-paying alternative

Trading 212 bank logo

Trading 212

Cash ISA

4.60%

AER

  • Pays 2.00% more than this Suffolk Building Society account
  • Includes a 1.00% bonus for 12 months, then 3.60%
Compare Cash ISAs

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Pros and cons

  • Pro: Savers who want instant access
  • Con: The rate is variable, so it can go down

Good to Know

To open this account you must be a permanent UK resident aged 18-24.

Please verify all details with the provider – see our Disclaimer

See all Suffolk Building Society accounts

Estimated returns with Suffolk Building Society's Cash ISA

What you could earn with Suffolk Building Society's Stepping Stone ISA (18-24 year olds).

Estimated interest

£1,000 saved

£26.00

At 2.6% AER

£5,000 saved

£130

At 2.6% AER

£10,000 saved

£260

At 2.6% AER

£150,000 saved

£3,900

At 2.6% 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 Stepping Stone ISA (18-24 year olds)

Jan WatermannCo-Founder, DepositScout

This account is aimed squarely at 18 to 24 year olds looking to start saving into an ISA, with a minimum of just £10 to open, which is a genuinely low barrier. The 2.60% rate is below the cash ISA market average and sits 2.52% behind the category leader at 5.12%, so it is hard to justify on rate alone. At 2.60% it also falls 0.50% below August 2026 CPI of 3.1%, meaning your money is losing purchasing power in real terms. If you want instant access within the same ISA wrapper, Moneybox's Open Access Cash ISA pays 3.80% and is worth a look first.

Compare Cash ISAs

2 alternatives to Suffolk Building Society's Stepping Stone ISA (18-24 year olds)

Same type of account, closest on rate.

Common questions about the Stepping Stone ISA (18-24 year olds)

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