Let me answer you with my understanding.
Process:
1. Fill in the tax return according to your financial statements.
Give it to the counter and write you a tax bill.
When to declare the problem:
General tax shall be paid within 3, 5, 7, 15 days in the month following the tax obligation. You can easily inquire about the specific taxes by calling 12366.
When to pay taxes: Generally, you should prepare enough money when you declare, and then issue a tax bill after you pay it.