If you buy a house with a loan, ask the developer for the full invoice. Usually after paying the down payment, the home buyer can get a down payment receipt or a down payment invoice, but what is more important than the down payment invoice is the invoice for the full purchase price. Generally, after paying the down payment and completing the online signing and filing procedures, you can take the online signing contract to the bank to apply for the loan. When the bank actually releases the loan, the bank will transfer all the remaining house payment to the developer, which is equivalent to The buyer pays the full price of the house to the developer. If you buy an existing house, you can get an invoice for the full purchase price immediately. If you buy a house off-plan, the developer will not issue a purchase invoice until the house surveying and mapping department conducts on-site measurements and knows the precise area of ??the house when the house is handed over. The full payment invoice is an important tool for applying for a real estate certificate, so it must not be lost.