銷項(xiàng)稅額是指增值稅銷項(xiàng)稅額,即納稅人發(fā)生應(yīng)稅銷售行為時(shí),按照銷售額與規(guī)定稅率計(jì)算并向購(gòu)買方收取的增值稅稅額。具體計(jì)算公式為:增值稅銷項(xiàng)稅額=銷售額×稅率。我國(guó)采用間接計(jì)算法作為一般計(jì)稅方法,即是先按當(dāng)期銷售額和適用稅率計(jì)算出銷項(xiàng)稅額,再將當(dāng)期準(zhǔn)予抵扣的進(jìn)項(xiàng)稅額進(jìn)行抵扣,從而間接計(jì)算出當(dāng)期增值額部分的應(yīng)納稅額。因此,當(dāng)期銷項(xiàng)稅額和當(dāng)期進(jìn)項(xiàng)稅額這兩個(gè)因素決定了一般納稅人當(dāng)期的應(yīng)納稅額。計(jì)算公式為:當(dāng)期應(yīng)納稅額=當(dāng)期銷項(xiàng)稅額-當(dāng)期進(jìn)項(xiàng)稅額增值稅。