Legal analysis: issue down payment invoice when down payment; The full invoice will be issued after the full payment is made or the bank issues the loan. Developers who fail to issue invoices according to regulations can complain directly to the tax bureau.

Legal basis: Article 509 of General Principles of Civil Law of People's Republic of China (PRC), the parties shall fully perform their obligations as agreed. The parties shall abide by the principle of good faith and fulfill the obligations of notification, assistance and confidentiality according to the nature, purpose and trading habits of the contract. During the performance of the contract, the parties shall avoid wasting resources, polluting the environment and destroying the ecology.