excel怎么用if函数计算应交个人所得税答:例如:m列为应发工资项,在n列输入公式 =IF(M5-5000>80000,(M5-5000)*0.45-15160,IF(M5-5000>55000,(M5-5000)*0.35-7160,IF(M5-5000>35000,(M5-5000)*0.3-4410,IF(M5-5000>25000,(M5-5000)*0.25-2660,IF(M5-5000>12000,(M5-5000)*0.2-1410,IF(M5-5000>3000,(M5-5000)*0...