answer:Normally, when you have a savings account, interest causes your balance to increase over time. Negative interest means your balance decreases. So, negative interest applied to normal people means that YOU are paying the bank to store your money. (there have actually been economic “experts” suggesting that, to “discourage” normal people from saving, and instead “encourage” them to spend it.) Applied to banks taking loans from central banks, it means that the amount of money they would have to pay back, decreases nominally over time. So basically, the central banks pay banks to borrow money. Of course, that would never be applied to normal people taking loans.