How to calculate personal income tax? Can refer to the 11 standard wage calculation step, inadequacies please add ...

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I hope we can bring help, only for reference, mainly the 11 steps of computing see explanatory notes.

 . 1   /// <Summary>  2 ///  wage calculation algorithm  . 3 /// </ Summary>  . 4 /// <param name = "DepartmentID"> sector primary key </ param>  . 5 /// <param name = "targetYearMonth "> the target date </ param>  . 6 /// <Returns> number of rows affected </ Returns>  . 7 public int  the Calculate (DepartmentID String, String targetYearMonth)  . 8         {  . 9 int  the returnValue  = 0 ;10            BaseParameterDao parameterDao =new BaseParameterDao(           
          
            
            
            
            
            
 
                
    this .DbHelper,  this .UserInfo);
11              String qiZhengE  =  parameterDao.GetParameter( " System " ,  " SalaryPersonalIncomeTax " ,  " QiZhengE " );
12              String year  =  targetYearMonth.Substring( 0 ,  4 );
13              String month  =  targetYearMonth.Substring( 5 );
14              DataTable dataTable  =   this .SearchByDepartment(departmentID, year, month,  false );
15   //  01 checks whether the amount of personal income tax would impose the empty? 16 the this .CheckPersonalIncomeTax (dataTable, qiZhengE); 17 //  02 total pre-tax items should be added to 18 the this .GetSum (dataTable,  " before tax should be added to the project " , BaseSalaryTable.FieldShuiQianYingJiaXiang); 19 //  03 Subtotal before tax should be withheld 20 the this .GetSum (dataTable,  " tax should be withheld project " , BaseSalaryTable.FieldShuiQianYingKouXiang); 21 //  04 total insurance fund subsidies, for example, three gold 22 the this .GetSum (dataTable,  " fund insurance subsidies class "             
              
              
              
              
              
              
               , BaseSalaryTable.FieldJiJinBaoXianBuTieLei);
23   //  05 tax items in total [remember tax wages, whether the project to calculate the tax] 24- the this .GetSalaryTax (dataTable);                      25 //  06 calculation of personal income tax-related data 26 the this .GetPersonalIncomeTax (dataTable); 27 //  07 calculate wages should be 28 the this .GetSalary (dataTable); 29 //  08 to calculate the after-tax should be withheld project 30 the this .GetSum (dataTable,  " tax increase on behalf of the project " , BaseSalaryTable.FieldShuiHouDaiJiaXiang); 31 //  09 tax calculation after the project should be added to 32 the this .GetSum (dataTable,  " after-tax withholding project             
              
              
              
              
              
              
              
              
               " , BaseSalaryTable.FieldShuiHouDaiKouXiang);
33 is   //  10 calculates real wages 34 is the this .GetRealSalary (the dataTable); 35 //  . 11 The calculated result is stored in the database 36             BaseSalaryEntity salaryEntity  = null ; 37 [             BaseSalaryDao salaryDao  = new new  BaseSalaryDao ( the this .DbHelper,  the this .UserInfo); 38 is the foreach  (DataRow the DataRow  in  DataTable.Rows) 39             { 40 IF  (dataRow.RowState  ==  DataRowState.Modified) 41 is             
              
              
   
   
              
 
                  
                  {
42                      salaryEntity  =   new  BaseSalaryEntity(dataRow);
43                      returnValue  +=  salaryDao.UpdateEntity(salaryEntity);
44                  }
45              }
46               return  returnValue;
47          }
48 

Reproduced in: https: //my.oschina.net/iwenr/blog/227689