Cash ISA
Grow and protect your hard-earned savings
Earn tax-free interest at a competitive rate and increased
protection, while still fully accessible for you.
How we stack up against other Cash ISAs
Rates correct as of June 2026
 |  |  |  | |
|---|---|---|---|---|
| Rate (variable) | 3.44% AER | 2.50% (2.10% after 12 months)* | 0.75% (on balances up to £24,999) | 3.6% (variable, base rate linked)** |
| ISA wrapper |  |  | | |
| Flexible ISA | |  |  | |
| FSCS protection | Up to £360k | Up to £120k | Up to £120k | Up to £120k |
| Teaser rate mechanics | | | | |
*If no further deposits are made.
**(currently set at Bank of England base rate minus 0.15%, but can be changed with 14 day notice; 4.51% for new customers in their first 12 months, on current-year subscriptions only — transfers from prior tax years get the 3.6% standard rate
Ready to open your Cash ISA?
It takes a few minutes to open online. Your ISA is provided and managed by Bondsmith, who we’ve partnered with to make available their modern Cash ISA, which offers a competitive interest rate, and simple account opening. They are fully regulated by the FCA, and work with HSBC, Santander and Lloyds to unlock £360k of FSCS cover.
Why open a Cash ISA
A rate you can count on
A genuinely competitive 3.44% AER rate which isn’t time-bound, or a welcome bonus.
Enhanced protection
FSCS protection up to £360,000, that is three times the standard £120,000 limit.
Full flexibility without monthly costs
We will pay your interest monthly, you can withdraw whenever you like, and wont charge you any fees.
The Octopus Money Cash ISA is provided by Bondsmith. ISA limits apply, deposit up to £20k this tax year. Terms apply.
Open your flexible Cash ISA today
Register and open your account online in a few simple steps. Pay in by bank transfer or transfer an existing Cash ISA.
To open this Cash ISA you need to be:
- 18 or over
- A UK tax resident
- The holder of a UK bank account
- Opening the account in your own name (no joint accounts)
Important information
- Things to keep in mind: the value of money held in cash can be reduced over time by inflation, which may lower what your savings can buy in future.
- ISA rules and tax treatment depend on your individual circumstances and may change. You have a 14-day right to cancel after opening your account.
- Your ISA is provided and managed by Bondsmith, a UK savings platform authorised and regulated by the Financial Conduct Authority. Bondsmith acts as the ISA manager and handles HMRC reporting.