Self-employed persons selling mutton can issue invoices in the following ways: The first way is that self-employed persons can receive quota invoice, and those with relatively low amount can issue invoices themselves. If the amount of the second invoice is relatively large, you can apply to the tax department and issue the invoice in the lobby, but you must have the certificate of the relevant department.

Catering has a business license, no tax registration, and cannot issue invoices. However, as a natural person, you can go to the tax bureau to apply for suggestions for tax filing as soon as possible, receive invoices according to law, and declare tax payment.