stamp tax就是“印花税”的英文表达,“证券交易印花税”则是stamp tax on stock trading或者stamp tax on securities trading,证券交易印花税是从普通印花税中发展而来的,根据一笔股票交易成交金额来计征。具体说来,stamp tax on buying shares是“股票买入印花税”,而stamp tax on share sales则是“股票售出印花税”,在该政策出台之前,这两项税是都要计征的,所以说是“双边征税”,即tax on trading;政策调整之后,就只征收stamp tax on share sales(股票售出印花税)这一种了,对买入方不再征税。