Overdraft refers to the amount that the bank gives you when you apply for a credit card, such as your work certificate, income certificate, real estate certificate, etc. To put it bluntly, the bank sets a number on your card, such as 5, yuan.

Then you can spend this 5, yuan without saving a penny after receiving the card.

Then the bank will set a date before which you must return the money you spent.

this is repeated.

this overdraft limit is given by the bank, so the bank certainly knows it. Depending on the information you submitted, the overdraft amount is different. Some people can overdraw 5W, while others can only overdraw 1,.