Where applicable, Plum offers you a bonus interest rate that is credited for the stated period after the opening of your Cash ISA account. 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.
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.
Transfer Ins
For Cash ISA accounts that were activated before October 30, 2025, the bonus rate for transfers from other providers is not applicable.
For Cash ISA accounts that were activated on/after October 30, 2025, the bonus rate for transfers from other providers is applicable and depends on the date of activation. For more details, you can check here.