Legal analysis: Go to the tax service office for tax registration within 30 days after obtaining the business license, and prepare relevant documents and materials: business license, relevant contracts, articles of association, agreement, bank account, account number certificate, organization, unified code certificate and its copy, list of legal representatives and board members or owner's resident identity card (passport) and other documents and materials required by local competent tax authorities.

Legal basis: Article 17 of the Law of People's Republic of China (PRC) on Tax Collection and Management shall, in accordance with the relevant provisions of the state, open basic account and other deposit accounts in banks or other financial institutions with tax registration certificates, and declare all their account numbers to the tax authorities. Banks and other financial institutions shall register the tax registration certificate number on the account of taxpayers engaged in production and operation, and register the account number of taxpayers engaged in production and operation on the tax registration certificate. When the tax authorities inquire about the account opening of taxpayers engaged in production and business operations according to law, the relevant banks and other financial institutions shall provide assistance.