Android 新版个税计算小demo程序
16lz
2021-01-23
去年10月份开始个人所得税支持专项扣除和上调了个税起征点，针对该项改变写了一个小demo，在新政策下计算个人所得税扣除，工资所得，然后将每个月的扣除额度和实际所得额度展示。
截图如下：
直接上源码：
package com.chuck.taxcalculatorimport android.app.Activityimport android.os.Bundleimport android.view.Viewimport android.widget.Buttonimport android.widget.EditTextimport android.widget.TextViewimport android.widget.Toastimport java.text.DecimalFormatclass MainActivity : Activity() { private lateinit var salary: EditText private lateinit var specialDesc: EditText private lateinit var gongJiJin: EditText private lateinit var gongjiJinBase: EditText private lateinit var shebao: EditText private lateinit var startCalc: Button private lateinit var result: TextView /*级数 累计预扣预缴应纳税所得额 预扣税率（%） 速算扣除数 1 不超过36000元的部分 3 0 2 超过36000元至144000元的部分 10 2520 3 超过144000元至300000元的部分 20 16920 4 超过300000元至420000元的部分 25 31920 5 超过420000元至660000元的部分 30 52920 6 超过660000元至960000元的部分 35 85920 7 超过960000元的部分 45 181920 */ val TOTAL_MONTH = 12 override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val df = DecimalFormat("0.00") salary = findViewById(R.id.salary) specialDesc = findViewById(R.id.special_desc) gongJiJin = findViewById(R.id.gongjijin) shebao = findViewById(R.id.shebao) startCalc = findViewById(R.id.start_calc) result = findViewById(R.id.result) gongjiJinBase = findViewById(R.id.gongjijin_base) result.visibility = View.INVISIBLE startCalc.setOnClickListener { val salaryStr: String = salary.text.toString() val specialDescStr: String = specialDesc.text.toString() val gongJiJinStr: String = gongJiJin.text.toString() val shebaoStr: String = shebao.text.toString() val gongjijinBase: String = gongjiJinBase.text.toString() if (salaryStr.isEmpty() || specialDescStr.isEmpty() || gongJiJinStr.isEmpty() || shebaoStr.isEmpty() ) { Toast.makeText(this, "请完善相关信息", Toast.LENGTH_LONG).show() return@setOnClickListener } result.visibility = View.VISIBLE val salaryNum = salaryStr.toFloat() val specialDescNum = specialDescStr.toFloat() val gongJiJingNum = gongjijinBase.toInt() * (gongJiJinStr.toFloat() / 100) val shebaoNum = salaryNum * (shebaoStr.toFloat() / 100) if (salaryNum <= 5000 || specialDescNum <= 0 || gongJiJingNum <= 0 || shebaoNum <= 0 ) { Toast.makeText(this, "相关信息不合法", Toast.LENGTH_LONG).show() return@setOnClickListener } var totalSalaryNum = 0F var totalTaxNum = 0F var instantDesc = 0F val totalBuilder = StringBuilder() for (index in 1..TOTAL_MONTH) { val total = salaryNum * index - 5000 * index - specialDescNum * index - gongJiJingNum * index - shebaoNum * index var taxNum = 0F var taxRate = 0F when (total) { in 0..36000 -> { taxNum = total * 0.03F instantDesc = 0F taxRate = 0.03F } in 36000..144000 -> { taxNum = total * 0.1F instantDesc = 2520F taxRate = 0.1F } in 144000..300000 -> { taxNum = total * 0.2F instantDesc = 16920F taxRate = 0.2F } in 300000..420000 -> { taxNum = total * 0.25F instantDesc = 31920F taxRate = 0.25F } in 420000..660000 -> { taxNum = total * 0.3F instantDesc = 52920F taxRate = 0.3F } in 660000..960000 -> { taxNum = total * 0.35F instantDesc = 85920F taxRate = 0.35F } else -> { taxNum = total * 0.45F instantDesc = 181920F taxRate = 0.45F } } val actualNum = taxNum - totalTaxNum - instantDesc totalTaxNum += actualNum val actualSalary = salaryNum - actualNum - shebaoNum - gongJiJingNum totalSalaryNum += actualSalary totalBuilder.append(index) .append("月份，税额：") .append(df.format(actualNum)) .append(",当月工资：") .append(df.format(actualSalary)) .append("，需要纳税的额度：").append(df.format(total)) .append("，适用的税率：").append(taxRate) .append("\n\n") } totalBuilder.append("你的总工资：").append(df.format(totalSalaryNum)).append("\n缴纳的总税额：") .append(df.format(totalTaxNum)).append("\n公积金年总额（个人&公司）：").append(df.format(gongJiJingNum * 2 * 12)) .append("\n\n") result.text = totalBuilder.toString() } }}xml视图部分：
<?xml version="1.0" encoding="utf-8"?><ScrollView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@null" tools:context=".MainActivity"> <LinearLayout android:background="@null" android:layout_marginTop="24dp" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="48dp" android:orientation="horizontal"> <TextView android:text="月工资额：" android:gravity="center|start" android:textSize="18sp" android:layout_width="wrap_content" android:layout_height="match_parent"/> <EditText android:id="@+id/salary" android:layout_width="wrap_content" android:layout_height="match_parent" android:textSize="18sp" android:gravity="center|start" android:textCursorDrawable="@drawable/edit_cursor_color" android:layout_marginStart="8dp" android:inputType="number" android:background="@drawable/input_background" android:hint="月工资额"/> LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="48dp" android:layout_marginTop="16dp" android:orientation="horizontal"> <TextView android:text="专项扣除额度：" android:gravity="center|start" android:textSize="18sp" android:layout_width="wrap_content" android:layout_height="match_parent"/> <EditText android:id="@+id/special_desc" android:layout_width="wrap_content" android:layout_height="match_parent" android:textSize="18sp" android:gravity="center|start" android:layout_marginStart="8dp" android:inputType="number" android:textCursorDrawable="@drawable/edit_cursor_color" android:background="@drawable/input_background" android:hint="专项扣除额度"/> LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="48dp" android:layout_marginTop="16dp" android:orientation="horizontal"> <TextView android:text="公积金缴费基数：" android:gravity="center|start" android:textSize="18sp" android:layout_width="wrap_content" android:layout_height="match_parent"/> <EditText android:id="@+id/gongjijin_base" android:layout_width="wrap_content" android:layout_height="match_parent" android:textSize="18sp" android:gravity="center|start" android:layout_marginStart="8dp" android:inputType="number" android:textCursorDrawable="@drawable/edit_cursor_color" android:background="@drawable/input_background" android:hint="基数在支付宝城市服务中可查"/> LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="48dp" android:layout_marginTop="16dp" android:orientation="horizontal"> <TextView android:text="公积金缴费比例：" android:gravity="center|start" android:textSize="18sp" android:layout_width="wrap_content" android:layout_height="match_parent"/> <EditText android:id="@+id/gongjijin" android:layout_width="wrap_content" android:layout_height="match_parent" android:textSize="18sp" android:gravity="center|start" android:layout_marginStart="8dp" android:inputType="number" android:textCursorDrawable="@drawable/edit_cursor_color" android:background="@drawable/input_background" android:hint="比例12%，则填12"/> LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="48dp" android:layout_marginTop="16dp" android:orientation="horizontal"> <TextView android:text="社保缴费比例：" android:gravity="center|start" android:textSize="18sp" android:layout_width="wrap_content" android:layout_height="match_parent"/> <EditText android:id="@+id/shebao" android:layout_width="wrap_content" android:layout_height="match_parent" android:textSize="18sp" android:background="@drawable/input_background" android:gravity="center|start" android:textCursorDrawable="@drawable/edit_cursor_color" android:layout_marginStart="8dp" android:inputType="number" android:hint="比例12%，则填12"/> LinearLayout> <Button android:id="@+id/start_calc" android:layout_width="match_parent" android:layout_height="wrap_content" android:textSize="18sp" android:background="@drawable/input_background" android:layout_margin="16dp" android:text="开始计算"/> <TextView android:id="@+id/result" android:layout_margin="8dp" android:textSize="18sp" android:background="@android:color/darker_gray" android:layout_width="match_parent" android:layout_height="wrap_content"/> LinearLayout>ScrollView>微信公众号：Android部落格
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