1. Taxpayers shall apply to the tax authorities for tax registration within 30 days from the date of obtaining the business license. When handling tax registration, the following documents should be provided: business license, organization code certificate, legal representative's ID card, bank account opening permit (basic household), house property right certificate or house lease contract, and the originals and copies of the above must be provided; A copy of the articles of association. 2 taxpayers should go to the tax registration window (tax hall) of the tax collection branch to receive the Tax Registration Form and the Taxpayer Data Collection Form. The original and photocopies of the completed Taxpayer Data Collection Form and related materials shall be assigned to the subordinate tax bureaus by the tax administrators, who shall conduct on-the-spot verification and handle the verification, audit and tax-related appraisal of the information filled in for taxpayers. 3. If the tax bureau examines the taxpayer's data collection form, and the content is complete, the information is accurate, and the signature and seal of the director and the tax collector are complete, the staff of the tax bureau accepts and prints the tax registration certificate, and completes the entry of the taxpayer's data collection form, and the taxpayer completes the tax declaration and payment in this process.

After the opening of Gong Hu, you need to go to the tax bureau to sign a tripartite tax deduction agreement. Newly established companies can sign online, and tripartite agreements can be signed later. There is no time limit, that is, you can't deduct tax without signing an agreement.