Give your savings a long-term Plum boost
and don’t pay a penny of tax on any of it up to £20,000 a year.
Our Cash ISA is flexible, meaning you can withdraw and pay it back without affecting your annual ISA allowance.
*Rate includes a Plum bonus of 2.28% AER (variable) if kept for 12 consecutive months and other conditions are met. After 12 months, the rate will be 2.54% AER (variable). The transfer-in rate is 4.00% AER (variable) which includes a bonus rate of 1.46% AER (variable). Interest on our Cash ISA varies. This is the rate from 13/11/26. ISA rules and T&Cs apply. Plum is not a bank.




Eligible deposits are protected by the Financial Services Compensation Scheme up to £120,000.

Withdraw your money and pay it back without affecting your annual ISA allowance.

Save smarter with tax-free interest and the flexibility to use your money when life calls.
Compound your savings tax-free. Your interest earns its own interest when left untouched.
We use bank-grade protection for your personal information and your money is held with authorised banks.

You can open your Cash ISA in your Plum app with as little as £1. It only takes a few minutes. All you need to get started is:
Plum app
National Insurance Number

Put your ISA on autopilot. Got an ISA somewhere else? Transfer it to Plum to keep your savings growing steadily with a top rate. It’s the smart way to manage your money and your future without the fuss.
Account number
National Insurance Number
ISA provider
ISA type
4.82% AER
(VARIABLE)
4.00% AER
(VARIABLE)
2.54% AER
(VARIABLE)
The FSCS protects eligible deposits (up to £120,000) that you have saved, per bank, building society or credit union (or up to £240,000 for joint accounts).
If you've got existing savings with Citibank, QNB or Lloyds, the FSCS protects up to £120,000 per person, per financial institution, so you may want to check whether any additional savings with them would mean you exceed the protection limit.
Click here to learn more about how your money is protected.
Lifetime ISA

Learn more
Lifetime ISAs help you save for your first home, or for retirement:
Your deposits count towards your yearly ISA limit. If you withdraw for any other reason, you’ll pay a 25% charge - except in special circumstances, for example if you’re very ill.
Stocks and Shares ISA

Learn more
Tax treatment depends on your individual circumstances and may change in the future.
OPEN CASH ISA FOR FREE
DOWNLOADThe total rate for the Plum Cash ISA to new customers is 4.82% AER (variable). This includes:
Basic interest accrues daily and is paid monthly on the first day of each month.
Where a Plum Bonus applies, it accrues daily and is paid at the end of your 12-month bonus term, provided the bonus conditions are met.
If you transfer in an ISA from another provider, the funds will earn a bonus rate of 1.46% AER (variable) in addition to the basic rate. This bonus applies for 12 months from the date your account is opened.
The Annual Equivalent Rate (AER) shows the rate of return if interest were paid and compounded once each year.
The interest you earn is tax-free, as long as your account complies with the HMRC’s ISA rules. Tax treatment and regulations may change, and the benefit of the tax exemption depends on your individual circumstances.
If you close or transfer your Plum Cash ISA during the 12-month bonus period (where applicable), you will lose the bonus rate and forfeit any unpaid bonus interest.
If you close your account during a calendar month, you will receive any basic interest accrued up to the day of closure, but you will lose all bonus interest already accrued.
Yes. The Plum Cash ISA has a variable interest rate that may go up or down in line with market conditions (for example, changes in the Bank of England base rate) and changes made by the third-party banks where your funds are held. If we lower the rate, we’ll notify you as soon as possible. If the rate increases, we’ll apply the new rate immediately and display it in the Plum App.
A bonus interest rate applies for the first 12 months after opening your Cash ISA. Bonus interest is calculated daily and paid at the end of the 12th month, along with the monthly accrued interest. If you close or transfer your account before the end of the bonus term, you’ll lose any bonus interest and forfeit the interest accrued for that month.
If you were to save £1,000 in your new Plum Cash ISA (and assuming you don't withdraw) with a total AER of 4.82% for 12 months, after 1 year you would have accrued £48.20, giving a total of £1,048.20.
The rate you see on this page (4.82% including a Plum bonus) is an AER (Annual Equivalent Rate), rather than a gross rate, which means it accounts for compounding. Compounding is the concept of earning a return on the principal amount saved, as well as any previous earnings.
You can open a Plum Cash ISA through the Plum App if you:
To open your Cash ISA, you’ll need to follow the steps in the Plum App and agree to the Plum Cash ISA Terms and Conditions and Plum General Terms. We may use third-party providers to verify your identity during the application process.
You can add funds to your Cash ISA from your Plum Wallet or directly from your linked bank account.
You can manage your account entirely through the Plum App, where you can:
You can hold only one Plum Cash ISA at any time but may hold other types of ISAs with different providers, as long as your total annual subscriptions stay within the HMRC ISA allowance.
Your Plum Cash ISA is a flexible ISA. This means you can withdraw money and replace it within the same tax year without the replaced funds counting towards your annual ISA allowance.
Yes, it’s quick and easy to withdraw from your Plum Cash ISA, with withdrawals paid within 1 working day. Because this is a flexible ISA, you can withdraw money and put it back in during the same tax year without affecting its tax-free status or using up more of your annual ISA allowance.
Important to know
If you close or transfer your Plum Cash ISA during the 12-month bonus period (where applicable), you will lose the bonus rate and forfeit any unpaid bonus interest.
If you close your account during a calendar month, you will receive any basic interest accrued up to the day of closure, but you will lose all bonus interest already accrued.
Firstly, you must move the money into your Plum Primary Pocket. From here, you can then withdraw to your linked bank account.
To do this, tap the ‘Pockets’ menu button, then the ‘Cash ISA’ tab and finally ‘Move’. We’ll show an estimated settlement date in the app when you request a movement but please note this is just an estimate. Movements are typically processed within 1 working day.
Once your movement has been processed, the money will be credited to your Primary Pocket balance. You can then withdraw to your bank on the same day.
There are no limits, fees or restrictions on withdrawing your money as it's a flexible ISA.
The process can take up to 30 calendar days, but our average completion time is within 20 calendar days. To help the Plum team process your transfer as quickly as possible, make sure your:
We provide email updates from isa-transfer-updates@withplum.com at key stages in the transfer process. We’ll let you know when we start, when we make contact with your current provider, if there are any issues with your transfer that need your attention and most importantly, when your money has arrived safely.
If you want to transfer your Cash ISA, we offer both full and partial transfers. This means you can choose to move your entire balance or select a specific amount of your current Cash ISA to transfer over to Plum.
Plum uses a range of banks for its Cash ISA. The proportion of money held with each bank can vary over time. The banks we currently use are:
Citibank NA London Branch
Lloyds Bank Plc
Qatar National Bank (Q.P.S.C.)
Banco Bilbao Vizcaya Argentaria SA (BBVA)
Nationwide Building Society TA Virgin Money
You can find out more about how your money is protected here.
Plum uses a range of banks for its Cash ISA. The proportion of money held with each bank can vary over time.
Bonus interest rates for existing Cash ISA customers vary depending on when you opened this product.
This content should not be read as legal, tax, investment, financial, or any other kind of advice. Tax treatment depends on your individual circumstances and may change in the future. Always do your own research.
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.