I'm really confused about those overdraft fees (or rather overdraft interests). My bank has also charges overdraft interests, they are currently 6.99% p.a. So i

I'm really confused about those overdraft fees (or rather overdraft interests). My bank has also charges overdraft interests, they are currently 6.99% p.a. So if I get into overdraft due to one payment but money comes in on the very same day it shouldn't be that much interest I have to pay to the bank. For an overdraft of 100 euros it should be like 2 cents for a day.