20000/1.17-15500/1.17-1200=2646.16元应交增值税的附加税(地方不同,税率不同,这里先按12%计算):(20000-15500)/1.17*0.17=653.85*12%=78.46元所得税:(2646.16-78.46)*25%=641.93元净利:2646.16-78.46-641.93=1925.77元。