Cash ISA
Give your savings a Plum boost

A phone screen showing the Plum Cash ISA in the Plum app

Earn up to 5.05% AER (variable)* and don't pay a penny of tax on any of it up to £20,000 a year.

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*Rate shown includes a Plum bonus of 1.51% AER (variable) if kept for 12 consecutive months and is for new customers only.

The interest rate for ISA transfers is 3.54% AER (variable) because they aren't eligible for the Plum bonus.

Interest on our Cash ISA varies - this is the rate from 17/02/25. ISA rules and Ts & Cs apply.

Plum is not a bank.

Eligible deposits are protected under the Financial Services Compensation Scheme up to £85,000.

Rate breakdown

There’s no subscription fee for the Plum Cash ISA.

Rate for first 12 months
Includes your Plum Bonus of 1.51% AER (variable) if kept for 12 months.
5.05% AER
(variable)
Rate when you transfer in your existing ISA
3.54% AER
(variable)
Rate for each 12-month period after your first 12 months
3.54% AER
(variable)
Rate when balance drops below £100 or after your fourth withdrawal
2.50% AER
(variable)

Tax-free earnings

With the Plum Cash ISA, any returns you make on your savings are tax-free. Add up to £20,000 per tax year and protect your money from income and capital gains tax.

An illustration of some bank notes, two piles, one stacked higher than the other.

Grow for the long term

Start saving with just £1.

An illustrated flower with a coin as the head.

Earn interest on your extra interest

Because you won’t pay tax up to your £20,000 each year, you’ll earn interest on the interest you've earned.

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Safety and security

We use bank-grade protection for your personal information and your money is held with authorised banks, Lloyds and Citibank.

Grow for the long term

Start saving with just £1.

Earn interest on your extra interest

Because you won’t pay tax up to your £20,000 each year, you’ll earn interest on the interest you've earned.

Safety and security

We use bank-grade protection for your personal information and your money is held with authorised banks, Lloyds and Citibank.

Start today or switch

You can open your Cash ISA in your Plum app right now with as little as £1. And if you’ve already opened one with another provider, you can transfer it over in minutes.

All you need to get started is the Plum app and your National Insurance number.

Transfer in from anywhere

Transferring in an existing ISA to Plum is easy in our app. We’ll ask you for a few details and take care of the rest with your current provider.

When you transfer in your ISA, you’ll keep all the tax benefits and it won’t affect your annual ISA allowance.

Transfers aren't eligible for the Plum bonus. You'll still get a high-street busting 3.54% AER (variable), though.

All you need is:

National Insurance Number

QQ123456B

Name of your ISA provider

Choose your past ISA provider

Type of ISA account

Cash ISA, Stocks and Shares ISA etc

Account Numbers

Cash ISA value (roughly)

Protected  by FSCS

Click here to learn more about how your money is protected.

The FSCS protects up to £85,000 that you have saved, per bank, building society or credit union (or up to £170,000 for joint accounts), subject to eligibility.

If you've got existing savings with Citibank or Lloyds, the FSCS protects up to £85,000 per person, per financial institution, so you may want to check whether any additional savings with them would mean you exceed the protection limit.

Ts&Cs & ISA rules apply. Tax rules for ISAs can change and their benefits depend on your personal circumstances. Plum does not offer financial advice and individuals should conduct their own research or seek independent advice. Read more about your allowance here.