Generally speaking (on a small scale), self-employed individuals are levied according to the quota in the national tax. As for the quota standard, it may vary from place to place. That is to say, let you take an invoice and then set a sales amount for you. When the invoice is used up, see if your invoice amount is enough to set a standard for you. If not, you don't have to hand it in. According to friends, most of them are not enough to pay taxes (invoices are relatively few, hehe), so I answered them together on the 23rd, hehe.
According to your question, I mainly want to ask whether it can be tax-free. I can tell you that it is best to apply for an employment permit or something before tax registration. There must be a tax reduction or exemption policy. Of course, you already have something better.
4. Our monthly quota is 2000,300,4000 (sales), and the tax rate is 4%. How to determine the details is up to your national tax, but I have no right to speak, hehe.
All the above are personal opinions and are for reference only.
Supplementary answer: Hehe, my answer is professional enough.
The first question is completely a law enforcement measure. No one can tell you except the person who helped you with the tax registration certificate.
The fourth question, which belongs to the specific provisions of your local tax law enforcement, is not necessarily the same everywhere, so I can't answer it. I don't know if I don't do it.
Today, I specially consulted a friend who has applied for a tax registration certificate. According to the provisions of the Tax Administration Law, if it is not handled in time (that is, it is not handled within 30 days), the fine limit will be less than 2,000 yuan, and 50 yuan will be fined or 100 yuan.
As for the quota, it should be approved according to your business scope, address, income and other specific circumstances.