Our Featured Cash ISAs

We update our Cash ISAs daily, so you always see the latest rates available from a range of top providers.
Filter & Sort

What is a Cash ISA?

A Cash ISA (Individual Savings Account) is a type of savings account that allows you to earn interest without paying tax on the interest earned. All UK residents aged over 18 receive an annual Cash ISA allowance, which allows you to save up to £20,000 across ISAs each tax year. (As of June 2026, subject to change).

How Do Cash ISAs Work?

Cash ISAs work in a similar way to standard savings accounts, but with the added benefit of tax-free interest. There are different types available, including easy access, fixed-rate, and flexible Cash ISAs.

What is the Cash ISA Allowance?

The Cash ISA allowance is the amount you can pay into ISAs each tax year, which runs from the 6th of April to the 5th of April. If you do not use your Cash ISA limit by the end of the tax year, it doesn’t roll over.
Total ISA allowance: £20,000 per year.
You can put the full allowance into a Cash ISA, or split it across other ISA types, such as a Stocks and Shares ISA or a Lifetime ISA. (As of June 2026, subject to change).

Cash ISA Comparison: How Does It Stack Up?

A Cash ISA is often the simplest place to start if you want to save without taking investment risk. Features vary by provider, but broadly speaking, the main ISA options compare like this:

ISA Types Comparison
ISA Type What it’s for Risk Key benefit Access
Cash ISA Everyday saving Low Tax-free interest Usually flexible
Stocks & Shares ISA Longer-term growth Medium to high Potential for higher returns Flexible, but investments can rise and fall
Lifetime ISA First home or later life Low to medium 25% government bonus Withdrawal rules apply
Junior ISA Saving for a child Low to high Tax-free savings for children Locked until age 18

Cash ISA vs Stocks and Shares ISA

A Cash ISA keeps your money in savings and pays tax-free interest, while a Stocks and Shares ISA invests your money for potential long-term growth. A Cash ISA is usually lower risk and easier to predict, while a Stocks and Shares ISA can offer higher returns, but there is typically more risk involved.

If you want stability and easier access, a Cash ISA may suit you better. If you are saving for the longer term and are comfortable with more ups and downs, a Stocks and Shares ISA may be worth considering. You can also open one of each type, but keep in mind that both will sit within your annual ISA allowance.
Some scammers use well-known brands to trick people into giving money or financial details, often by offering fake ISA and savings products with attractive interest rates. The most effective way to protect yourself is to report these scams.
  • If you suspect a fraudster has contacted you, stop all communication immediately and report it to Action Fraud.
  • If someone is pretending to be CreditKnowledge, get in touch with our customer services team.
  • Be cautious if you are asked to pay an upfront fee for a loan — this is almost always a scam.

For advice, you can also call Action Fraud on 0300 123 20240.

^Rates up to 4.67%. Rates may change. Eligibility criteria and terms apply.

The content on this page is for general information only and is not financial advice. Investments can fall as well as rise, and you may get back less than you invest. ISA tax benefits depend on your circumstances and may change. Consider seeking independent financial advice before investing.