是
否
2.偶然所得
判断收入类型
F(x) = (x*(1-20%)-50000)*40%+30000*30%+20000*20%
(x-5000)*10%+(5000-3500)*3%
38500x=58500
12500x=38500
(x-12500)*25%+(12500-8000)*20%+(8000-5000)*10%+(5000-3500)*3%
4.劳务报酬所得
(x-8000)*20%+(8000-5000)*10%+(5000-3500)*3%
不用缴税
20000f(x)=50000
3500x=5000
(x-38500)*30%+(38500-12500)*25%+(12500-8000)*20%+(8000-5000)*10%+(5000-3500)*3%
x*20%
税前收入x
f(x)=x*(1-20)%
f(x)=20000
800x=4000
1.工资薪金
(x-58500)*35%+(58500-38500)*30%+(38500-12500)*25%+(12500-8000)*20%+(8000-5000)*10%+(5000-3500)*3%
选择收入类型
0x=3500
(x-83500)*45%+(83500-58500)*35%+(58500-38500)*30%+(38500-12500)*25%+(12500-8000)*20%+(8000-5000)*10%+(5000-3500)*3%
5000X=8000
f(x)50000
x*(1-20%)*20%
4000x
8000x=12500
x83500
F(x) = (x*(1-20%-)-20000)*30%+20000*20%
58500x=83500
（x-800)*20%
x=800
（x-3500）*3%
