A lawmaker has questioned the rosy picture painted by new government figures, which shows the number of confirmor deals on flats have more than halved thanks to the special stamp duty.
Confirmors are investors who buy a property and resell it before the transaction is completed.
The monthly average number of such deals was 145 in the first three months of this year, compared to 310 per month last year, said Inland Revenue chief Chu Yam-yuen.
He said the figures showed the extra stamp duty had been useful in fighting speculation.
But encouraging as the figures may be, they do not include high-volume transactions made in the names of companies, often registered in offshore financial centres such as the British Virgin Islands, said legislator Lee Wing-tat of the Democratic Party.
In an attempt to curb speculation, the government in November announced an additional stamp duty of between 5 per cent and 15 per cent on residential apartments resold within two years.