Fixed Rate

OakNorth Bank Fixed Term 18 Months Review

An 18-month fixed rate bond from OakNorth Bank. It ranks 10th of 15 18-month fixed rate bonds we track.

Fixed rate · 18 months

4.50%AER

Rate checked Oct 2026Got this account? Leave a review

Protection

FSCS£120,000

Min balance

£1

Max balance

No limit

Access

At maturity only

How It Stacks Up

Ranks 10th of 15

18-month fixed bonds we track

Below average
This account 4.50%
UK CPI (Aug 2026)
3.10%
Pays 1.40% more
Average 18-month fixed
4.62%
Pays 0.12% less
Best 18-month fixed
5.12%
Pays 0.62% less

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

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Worth Weighing Up

  • Con: Your money is locked in for 18 months

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Estimated returns with OakNorth Bank's Fixed Rate

What you could earn with OakNorth Bank's Fixed Term 18 Months.

Estimated interest

£1,000 saved

£68.25

At 4.5% AER

£5,000 saved

£341

At 4.5% AER

£10,000 saved

£683

At 4.5% AER

£50,000 saved

£3,413

At 4.5% 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 OakNorth Bank Fixed Term 18 Months

Jonny PeaseCo-Founder, DepositScout

OakNorth Bank's 18-month fixed rate comes in at 4.50%, which sits below the market average for fixed-rate accounts and 0.85% behind the current market leader at 5.35%. It does beat August 2026 CPI of 3.1% by 1.40%, so your money grows in real terms, but savers who shop around can do better for the same term: Chetwood Bank's 18 Month Fixed Rate Savings pays 4.90%, for instance. The main catch is the usual one for fixed bonds: no access until maturity, so only commit money you can genuinely lock away for 18 months.

Compare Fixed Rate Bonds

2 alternatives to OakNorth Bank's Fixed Term 18 Months

Same type of account, closest on rate.

Common questions about the Fixed Term 18 Months

D

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