Having a business license and five certificates in one is equivalent to having a tax registration certificate.

If you have a tax registration certificate, you have to pay stamp duty.

Whether you have a business or not, you have to copy taxes and file tax returns.

If there is business, that is, turnover (even if it is at a loss or at a loss), tax should also be paid;

If there is no business, that is, no turnover, you don't have to pay taxes.