Why do I have to pay business tax over the selling price of my condo. I'm selling my own privately owned condo, owned in my own name, not a business, no inestment purposes. I do not make a profit on the sale. Still the agent handling the sale says I must deduct 3,3 % business tax from the sale proceeds and pay this to the land office. Is this correct? Are there no exemptions for foreigners who are just in Thailand for holidays?