Where applicable, Plum offers you a bonus interest rate that is credited for the stated period after the opening of your Cash ISA account.
This payment is subject to these conditions:
You must have at least £100 deposited in your Cash ISA. If your balance falls below £100, you will receive a reduced interest rate until your balance is topped back up to the minimum amount.
You make fewer than 4 withdrawals
The bonus rate is calculated in the background on a daily basis, and it will be credited to your account after the bonus period ends.
For example, when the bonus period is 1 year, it will be credited at the beginning of the thirteenth month after the opening of your Cash ISA account. If the bonus period is 3 months, your account will be credited at the beginning of the fourth month after your Cash ISA account is opened.
Before 1 September 2025: Bonus was credited at the end of the thirteenth month after opening the Cash ISA. If the bonus period were 3 months, your account would be credited at the end of the fourth month after your Cash ISA account was opened.
When the bonus period ends, the interest rate will revert to the basic rate plus any new bonus rate we decide to offer at that time. You can read more details about the current Cash ISA interest rates we offer here.
The bonus rate is not applicable for transfers in from other providers.
It's applicable only for the money you deposit via our app.