What interest rate does the FirstSave 18 Month Fixed Rate Bond pay?

The FirstSave 18 Month Fixed Rate Bond pays 5.05% AER, fixed for 18 months.

How much interest could I earn?

Saving £10,000 for 18 months would earn about £767 at 5.05% AER. This assumes the rate stays the same and interest stays in the account.

How much can I pay in?

You can deposit at least £1,000 and up to £2,000,000.

Can I withdraw my money?

No. Your money is locked in until the fixed term ends, so only put in what you won't need before then.

When is interest paid?

You can choose to have interest paid monthly or annually.

Who can open this account?

New and existing FirstSave customers can open it. You can open it online.

Is my money protected?

Yes. Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per person, per banking licence.

How does it compare with other 18-month fixed rate bonds?

At 5.05% AER it ranks 2nd of 14 18-month fixed rate bonds we track. The best pays 5.12% and the average is 4.69%.

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Fixed Rate Compare 18 Month Fixed Rate Bonds

FirstSave 18 Month Fixed Rate Bond Review

One of the best-paying 18-month fixed rate bonds, from FirstSave, with a £1,000 minimum deposit. It ranks 2nd of 14 18-month fixed rate bonds we track.

Rate checked Oct 2026Got this account? Leave a review

Fixed rate · 18 months

5.05%AER

Rate checked Oct 2026Got this account? Leave a review

Protection

FSCS£120,000

Min balance

£1,000

Max balance

£2,000,000

Access

At maturity only

Interest paid

Monthly/Annually

How It Stacks Up

Ranks 2nd of 14

18-month fixed bonds we track

Among the best

This account 5.05%

UK CPI (Aug 2026): 3.10%; Pays 1.95% more
Average 18-month fixed: 4.69%; Pays 0.36% more
Best 18-month fixed: 5.12%; Pays 0.07% less

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

Compare fixed bonds

A Good Fit For

Pro: New and existing savers
Pro: Savers who want a monthly income

Worth Weighing Up

Con: Your money is locked in for 18 months
Con: You need at least £1,000 to open it

Good to Know

You must fully fund your fixed-rate bond within 10 working days of opening. You can make several payments over 10 calendar days.

Please verify all details with the provider – see our Disclaimer

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Estimated returns with FirstSave's Fixed Rate

What you could earn with FirstSave's 18 Month Fixed Rate Bond.

Estimated interest

£1,000 saved

£76.70

At 5.05% AER

£5,000 saved

£383

At 5.05% AER

£10,000 saved

£767

At 5.05% AER

£2,000,000 saved

£153,397

At 5.05% AER

Estimated over the 18-month term, if the rate stays the same and interest is left in. Amounts outside the account's minimum or maximum aren't shown.

Work out the tax on your interestSee how much of this interest could be taxed.

Our Expert Opinion on FirstSave 18 Month Fixed Rate Bond

Jonny PeaseCo-Founder, DepositScout

FirstSave's 18 Month Fixed Rate Bond pays 5.05%, which is above the market average for fixed-rate bonds, though 0.32% behind the category leader at 5.37%. At 1.95% above August 2026 CPI of 3.1%, your money does grow in real terms. The main catch is that no withdrawals are permitted before maturity, so this suits savers who can lock away between £1,000 and £2,000,000 for the full 18 months. If you want a slightly better rate for the same term, Union Bank of India (UK) Ltd's 18 Month Union Premier Bond offers 5.12%.

Compare Fixed Rate Bonds