One year. Deed tax refers to a one-time tax levied on the new owner (property bearer) based on a certain proportion of the property price based on the contract signed by the parties when the property rights of real estate (land, house) are transferred or changed. Provident fund interest discount can be applied for after one year of deed tax payment. The provident fund interest discount is once a year, on July 1 of each year. The Provident Fund Center provides interest discounts to applicants for interest discounts on a one-year cycle. After the one-year discount period expires, employees can reapply to the Provident Fund Center for interest discounts or provident fund loans.