0% hassle. The fully flexible cash ISA.
Top-up or withdraw whenever you need, with no penalties, and without affecting your £20,000 allowance.
Start saving tax-free today.
*From 21st August 2025 the rate will be 3.80% AER / 3.74% Gross (variable)
Save up to £20,000 per year, and pay zero tax on the 4.05%* AER / 3.98%* Gross variable interest you earn.
*From 21st August 2025 the rate will be 3.80% AER / 3.74% Gross (variable)
No disappearing bonus rates, no penalties to withdraw, just simple tax-free savings.
Save £20,000 today, or build your savings over time. Add and withdraw your money when you need, without affecting your allowance.
Get FSCS deposit protection on your money held with Kroo, up to £85,000.
Our Cash ISA is free to open and has no monthly fees.
View your current account and Cash ISA all in one simple, easy to use app.
Our incredible in-house, UK based support is here to help.
1 Provide details
2 Sign & declare
3 Add money
You’ll need a Kroo Personal Current Account to open a Kroo Cash ISA, subject to eligibility.
You can view our ISA terms and conditions, key features, and FAQs.