1. The company will not be able to issue invoices, because the tax bureau will ask to change the tax number when it needs to buy again, and it is necessary to re-carve the special invoice seal and get a new invoice;

2. The company itself usually submits a tax return and already has a digital certificate of the tax return. It is possible that the password cannot be logged in because of the integration of the three certificates, and it needs to be reset at the front desk.

Changing tax registration refers to a tax registration management system in which taxpayers apply to the tax authorities to adjust the tax registration content to make it consistent with the actual situation because the tax registration content has changed after the establishment of tax registration.

Where a taxpayer or withholding agent changes one of the contents of the tax registration, it shall, within 30 days from the date when the administrative department for industry and commerce handles the change registration or the relevant government departments approve or actually change it, apply to the original tax registration authority with relevant documents.