I have a bank account with checking and savings bundled together; if I make enough purchases with my debit card, I earn a higher interest rate on the savings. Today I decided to look at other types of savings account my bank offers to see if I can get a better rate if I move, say, the money I'm saving for a new car into a higher yield account.
Much to my surprise, my normal savings offers .45% APY after I use my debit card 5 times, but their regular savings only at most .14% (if I have $500,000 or more in the account)! Even money market accounts only go up to .18%. Why are these dedicated savings accounts all worse than the basic one that came with my checking account?