I chose Manulife Bank at random.
The figures listed on the link you provided list 2.250 percent “monthly interest.”
So I went to Manulife Bank and looked up the current rates, as well as the explanation of rates.
It pays to read and understand the fine print
"The Manulife One base rate* is a variable rate that is not guaranteed and may fluctuate. Variable interest rates are calculated on the daily closing balances and charged monthly. These accounts may be paid off at any time without penalty.
Our Fixed rates are set from time to time and are guaranteed for the term selected. Interest is calculated monthly, not in advance. The early termination of a fixed rate account will be subject to an interest penalty.
The Credited rate is a current variable interest rate that fluctuates and is not guaranteed. It is applied to any funds in the Main account when the Main account is in a positive position. This interest is calculated on the daily closing balance and paid monthly.
*The Manulife One Base Rate is a variable rate of interest that is:
determined by Manulife Bank of Canada from time to time;
expressed as a percentage per year: and,
calculated monthly, not in advance
It is the reference rate for loans made for Canadian dollars in Canada under Manulife One."
Your are earning interest at an annual rate!
Besides, the US Fed Funds rate is only 1.85 percent. There is no way any legitimate financial institution in the US or Canada with pay you 24 percent annual interest right now and still remain in business.
Best you do some homework about saving accounts, interest rates, and read the financial pages for a while.