The Buyer’s Stamp Duty, or BSD, is a tax that every home buyer has to pay when they purchase a property. The amount you have to pay depends on the property price. The more expensive the property, the higher the tax. For residential properties, you will be charged 1% for the first $180,000, 2% for the next $180,000, 3% for the next $640,000, and 4% for the remaining amount. The amount you have to pay is rounded down to the nearest dollar.