Back to the source of my question. Why isn't it immediate? No human beings are needed to post a pending notice on an account. That data can't be sent around the world in a few seconds. It's not immediate because it's not immediate really isn't an answer.
It isn't immediate because they have a bunch of checks and balances in place to keep your money safe and in the proper hands. Some of those checks and balances are bank policy, some are the result of federal and state regulatory requirements.
As for why, it's been explained. If you don't like the answer, stop asking the question. Until you accept the fact that that
electronic does not equal [/immediate] the whole discussion is a useless waste of time no matter what your preconceived notion of the process might be.
if they did that they wouldn't get to collect 20 to 100 bucks for the overdrafts.
And if people would stop trying to beat their check to the bank and actually leave a reasonable amount of lag time for transaction processing, they wouldn't have to worry about those overdrafts.
Basic money handling isn't hard, but it does take some realistic expections and a little bit of forethought.
Brad