Plum Interest has only an annual fee of 0.25% of your total amount of investment. In detail:
Blackrock Fee: 0.10% of the fee is going to Blackrock, the manager of the investments behind Plum Interest. This fee is automatically deducted from your investment.
Plum Fee: 0.15% of the fee is going to Plum for service management. It is deducted from your Primary Pocket on the first day of each month, according to the total amount of your Plum Interest. The 0.15% is divided by 12 for the calculation of each month.
Premium users are excluded from the Plum fee (0.15%) and only pay the Blackrock fee (0.10%) for the management of the investment.