Take a copy of the tax registration certificate to the tax office where you are in charge and get an online deduction agreement in triplicate (the seal of the tax office needs to be changed), fill it out and go to the bank. After the bank seals, leave a copy. You take the remaining two copies, go back to the office to find a special administrator, register in the computer, and then leave one copy at the tax office. You can take one yourself. Remember: the bank information you filed at the tax office must be consistent with the bank information you handled online deduction, otherwise it cannot be handled.