Quote from Nasdaq5048:
U wont get 4.5% if u factor in there is no interest on 1st 10K. So, 0.8 * 4.5% is the correct anwser
Quote from jimrockford:
Wrong. IB customers will receive the equivalent of high interest rates for the entire account balance, IF they use IB EFPs. The lack of interest on the first $10K applies only when customers choose to earn their interest by holding cash instead of EFPs.