See the value-added tax stamp for provident fund loans. Generally speaking, a house purchase invoice, also known as a real estate invoice, is an invoice from the local tax department. It is specially used for the business of selling houses and buildings, and is issued by developers, which are real estate invoices. On May 1, 2016, the business tax to value-added tax reform was fully promoted. Real estate invoices were officially discontinued and value-added tax invoices were issued instead. The news comes from Tax Network. Therefore, the provident fund loan depends on the value-added tax stamp.