python个人所得税实验报告＋操作界面
实验语言：Python
实验界面搭建：利用tkinter搭建图形化界面
实验目的：搭建方便使用的计算个人所得税的计算器
参考：https://m.taxspirit.com（个税精灵：计算个人所得税在线计算器）
计算器应用到的计算公式如下：
所使用的的税率表如下：
搭建的计算器截图如下：
进入界面：
计算结果界面如下：
使用说明：用户选择当前月份，并输入本月税前工资、本月五险一金以及专项附加扣除费用。点击计算即可得到相应的结果。
代码如下：
from tkinter import *
from tkinter import ttk
import tkinter.messagebox
def click():
if not salary.get():
tkinter.messagebox.showwarning('警告','请输入本月税前工资！')
elif not safe.get():
tkinter.messagebox.showwarning('警告','请输入五险一金！')
elif not cost.get():
tkinter.messagebox.showwarning('警告','请输入专项附加扣除！')
else:
la.destroy()
tree.destroy()
reason = Label(root, text="计算结果",width=20, height=2)
reason.grid(row=5, columnspan=4)
month_get = float(fruit.get())
salary_get = float(salary.get())
safe_get = float(safe.get())
cost_get = float(cost.get())
salary_sum = month_get * salary_get
Label(root, text="累计收入：",width=20, height=2).grid(row=7, column=0)
Label(root, text="{}".format(salary_sum),width=20, height=2).grid(row=7, column=1)
safe_sum = month_get * safe_get
Label(root, text="累计五险一金：",width=20, height=2).grid(row=7, column=2)
Label(root, text="{}".format(safe_sum),width=20, height=2).grid(row=7, column=3)
cost_sum = month_get * cost_get
Label(root, text="累计专项附加扣除：",width=20, height=2).grid(row=8, column=0)
Label(root, text="{}".format(cost_sum),width=20, height=2).grid(row=8, column=1)
sum_fee = 5000
Label(root, text="累计减除费用：",width=20, height=2).grid(row=8, column=2)
Label(root, text="{}".format(sum_fee),width=20, height=2).grid(row=8, column=3)
tax_should_pay = salary_sum - safe_sum - cost_sum - 5000
if tax_should_pay < 0:
tax_should_pay = 0
Label(root, text="应纳税所得额：",width=20, height=2).grid(row=9, column=0)
Label(root, text="{}".format(tax_should_pay),width=20, height=2).grid(row=9, column=1)
if tax_should_pay <= 36000:
tax_rate = 0.03
quicknum = 0
elif 36000 < tax_should_pay <= 144000:
tax_rate = 0.1
quicknum = 2520
elif 144000 < tax_should_pay <= 300000:
tax_rate = 0.2
quicknum = 16920
elif 300000 < tax_should_pay <= 420000:
tax_rate = 0.25
quicknum = 31920
elif 420000 < tax_should_pay <= 660000:
tax_rate = 0.3
quicknum = 52920
elif 660000 < tax_should_pay <= 960000:
tax_rate = 0.35
quicknum = 85920
else:
tax_rate = 0.45
quicknum = 181920
Label(root, text="税率：",width=20, height=2).grid(row=9, column=2)
Label(root, text="{}".format(tax_rate),width=20, height=2).grid(row=9, column=3)
Label(root, text="速算扣除数：",width=20, height=2).grid(row=10, column=0)
Label(root, text="{}".format(quicknum),width=20, height=2).grid(row=10, column=1)
last_month_salary_sum = salary_sum - salary_get
last_month_safe_sum = safe_sum - safe_get
last_month_cost_sum = cost_sum - cost_get
last_month_tax_should_pay = last_month_salary_sum - last_month_safe_sum - last_month_cost_sum
if last_month_tax_should_pay <= 36000:
last_tax_rate = 0.03
last_quicknum = 0
elif 36000 < last_month_tax_should_pay <= 144000:
last_tax_rate = 0.1
last_quicknum = 2520
elif 144000 < last_month_tax_should_pay <= 300000:
last_tax_rate = 0.2
last_quicknum = 16920
elif 300000 < last_month_tax_should_pay <= 420000:
last_tax_rate = 0.25
last_quicknum = 31920
elif 420000 < last_month_tax_should_pay <= 660000:
last_tax_rate = 0.3
last_quicknum = 52920
elif 660000 < last_month_tax_should_pay <= 960000:
last_tax_rate = 0.35
last_quicknum = 85920
else:
last_tax_rate = 0.45
last_quicknum = 181920
sum_tax_should_pay = tax_should_pay * tax_rate - quicknum
Label(root, text="累计应纳税额：",width=20, height=2).grid(row=10, column=2)
Label(root, text="{}".format(sum_tax_should_pay),width=20, height=2).grid(row=10, column=3)
sum_tax_payed = last_month_tax_should_pay * last_tax_rate - last_quicknum
Label(root, text="累计已缴税额：",width=20, height=2).grid(row=11, column=0)
Label(root, text="{}".format(sum_tax_payed),width=20, height=2).grid(row=11, column=1)
this_month_pay = sum_tax_should_pay - sum_tax_payed
Label(root, text="当月应纳税额：",width=20, height=2).grid(row=11, column=2)
Label(root, text="{}".format(this_month_pay),width=20, height=2).grid(row=11, column=3)
really_salary = salary_get - safe_get - this_month_pay
Label(root, text="本月税后工资：",width=20, height=2).grid(row=12, column=0)
Label(root, text="{}".format(really_salary),width=20, height=2).grid(row=12, column=1)
root = Tk()
root.title('个人所得税计算器')
root.geometry('%dx%d' % (600, 600))
Label(root, text="工资累计预缴个税计算器",width=20, height=2).grid(row=0, columnspan=4)
items = [1,2,3,4,5,6,7,8,10,11,12]
Label(root, text="当前月份：",width=20, height=2).grid(row=1, column=0)
fruit = StringVar()
fruit.set(items[6])
menu = OptionMenu(root, fruit, *items)
menu.grid(row=1, column=1)
Label(root, text="本月税前工资：",width=20, height=2).grid(row=1, column=2)
salary = Entry(root)
salary.grid(row=1, column=3)
Label(root, text="五险一金：",width=20, height=2).grid(row=2, column=0)
safe = Entry(root)
safe.grid(row=2, column=1)
Label(root, text="专项附加扣除：",width=20, height=2).grid(row=2, column=2)
cost = Entry(root)
cost.grid(row=2, column=3)
Label(root, text="五险一金由个人缴纳部分与公司缴纳部分组成，具体数值请移至五险一金计算窗口计算").grid(row=3, columnspan=4)
Label(root, text="减除费用（起征点）：",width=20, height=2).grid(row=4, column=0)
Label(root, text="5000元",width=20, height=2).grid(row=4, column=1)
Button(root, text="计算",command=click ,width=50, height=2).grid(row=5, columnspan=4)
la = Label(root, text="工收入个税资薪金",width=20, height=2)
la.grid(row=6, columnspan=4)
tree = ttk.Treeview(root)
tree["columns"] = ('累计预扣预缴应纳税所得额','预扣税率','速算扣除数')
tree.column("累计预扣预缴应纳税所得额", width=250)
tree.column("预扣税率", width=60)
tree.column("速算扣除数", width=60)
tree.heading("累计预扣预缴应纳税所得额", text="累计预扣预缴应纳税所得额")
tree.heading("预扣税率", text="预扣税率")
tree.heading("速算扣除数", text="速算扣除数")
tree.insert("", 0, text="line1", values=("不超过36000元部分", "3%", "0"))
tree.insert("", 1, text="line2", values=( "超过36000元至144000元的部分", "10%", "2520"))
tree.insert("", 2, text="line3", values=( "超过144000元至300000元的部分", "20%", "16920"))
tree.insert("", 3, text="line4", values=( "超过300000元至420000元的部分", "25%", "31920"))
tree.insert("", 4, text="line5", values=( "超过420000元至660000元的部分", "30%", "52920"))
tree.insert("", 5, text="line6", values=( "超过660000元至960000元的部分", "35%", "85920"))
tree.insert("", 6, text="line6", values=( "超过960000元的部分", "45%", "181920"))
tree.grid(row=7,columnspan=4 )
#root.mainloop()