Is selling stamp duty based on the selling price or the seller's purchase price if the property is sold only 3 years after purchase

The Seller's Stamp Duty (SSD) is based on the actual price or market value of the property at the time of sale. If the property is sold within three years of purchase, SSD is payable as follows:
- Sell within one year of purchase – 12% SSD
- Sell within two years of purchase – 8% SSD
- Sell within three years of purchase – 4% SSD
- Sell after three years of purchase – 0% SSD

You can calculate your SSD with EdgeProp’s calculator.