In order to prove your work and income, you need a copy of your work permit. The income certificate can be issued by the unit or the individual's tax payment certificate. As for how to get a high overdraft:

First of all, you need to ensure that there is no problem with your credit.

You have a very high income, a house and a car, and no loan. Anyway, the higher the qualifications, the better.

Which banks do you know? Of course. . .

1, go to the bank counter with the necessary documents.

You must bring your ID card. Of course, other documents, such as social security card, income certificate, real estate license, etc., can also be carried with you. After all, handling a credit card is not as simple as handling a savings card. Only when you explain your purpose will the staff ask you to fill out the credit card application form immediately. After carefully filling it out, the staff will ask you to take out the relevant documents, and they will copy the relevant documents as the basis for review and send you a credit card. Remember, if you don't know how much to fill in the credit line, you can ask the staff and they will give you a detailed answer.

If you have a lot of personal assets and no bad credit record, the bank is eager for you to apply for a card as soon as possible.

2. Wait for the bank call or express delivery.

The general bank will give you an answer within half a month. If the application is unsuccessful, some bank officials will send you a message telling you the result.

Of course, there are also bank staff who call you to tell you whether the application is successful or not. If the application is successful, they will tell you to get a credit card, but the bank will usually express it to you.

Some banks haven't heard from you for a week or two, and you didn't realize your credit card application was successful until you received the courier. Remember, when you express your credit card, the courier will verify your ID card.

3. Apply for a credit card online.