1. First of all, you have to pay back the undeclared taxes (value-added tax or business tax, corporate income tax, personal income tax, etc. ), but also to pay a fine (general taxpayers delay a month to pay a fine in 400 yuan, the small scale is not clear, you can consult the local taxation bureau).

2. Then return the useless invoices to the tax bureau.

3. Write an application for cancellation, and then provide the information required by the tax authorities.