Your 3% interest will be added directly to your Freetrade account/s on the 11th working day of each month. We prioritise paying interest to your ISA over your GIA if you have a cash balance in both.
For example, if you have £1,500 uninvested cash in your ISA and £1,500 in your GIA, we will first apply the interest against the £1,500 in the ISA, and then interest earned on the remaining £500 of the maximum £2,000 threshold against your GIA.
Any interest paid to your ISA does not impact your annual allowance as this is considered as a return on your investment and not a contribution.