public static decimal CalculateTaxMonthly(
decimal taxYearly,
decimal sumTaxPrev,
decimal sumTaxPrevbonus,
int periodStart,
int periodEnd,
int periodCurrent,
decimal begSalaryPPh21,
PajakTypeData.TaxCalculationMethod taxCalculationMethod,
PajakTypeData.EmployeeCondition employeeCondition)
{
decimal hasil = 0;
int lengthCalculationPeriod = periodEnd - periodStart + 1;
int lengthCurrentPeriod = periodCurrent - periodStart + 1;
int lengthForecastPeriod = periodEnd - periodCurrent + 1;
if (periodCurrent == periodEnd)
{
if (employeeCondition == PajakTypeData.EmployeeCondition.Transfer)
{
hasil = taxYearly * lengthCalculationPeriod / 12;
hasil = hasil - sumTaxPrev - sumTaxPrevbonus - begSalaryPPh21;
}
else
{
hasil = taxYearly - sumTaxPrev - sumTaxPrevbonus - begSalaryPPh21;
}
}
else if (taxCalculationMethod == PajakTypeData.TaxCalculationMethod.WeightedAverage)
{
hasil = taxYearly - sumTaxPrevbonus - begSalaryPPh21;
hasil = hasil * lengthCurrentPeriod / lengthCalculationPeriod;
hasil = hasil - sumTaxPrev;
}
else if (taxCalculationMethod == PajakTypeData.TaxCalculationMethod.Forecast)
{
hasil = taxYearly - sumTaxPrevbonus - sumTaxPrev - begSalaryPPh21;
hasil = hasil / lengthForecastPeriod;
}
else if (taxCalculationMethod == PajakTypeData.TaxCalculationMethod.Annually)
{
hasil = taxYearly / lengthCalculationPeriod;
}
hasil = Round(hasil, 0);
return(hasil);
}
public static decimal CalculateBrutoYearly(
PajakTypeData.TaxCalculationMethod taxCalculationMethod,
decimal brutoCurrent,
decimal brutoPrev,
decimal brutoPrevBonus,
int periodStart,
int periodEnd,
int periodCurrent,
PajakTypeData.EmployeeCondition employeeCondition)
{
decimal hasil = 0;
int lengthCalculationPeriod = periodEnd - periodStart + 1;
int lengthCurrentPeriod = periodCurrent - periodStart + 1;
int lengthForecastPeriod = periodEnd - periodCurrent + 1;
if (periodCurrent == periodEnd)
{
if (employeeCondition == PajakTypeData.EmployeeCondition.Transfer)
{
hasil = (brutoCurrent + brutoPrev) * 12 / lengthCalculationPeriod + brutoPrevBonus;
}
else
{
hasil = brutoPrev + brutoPrevBonus + brutoCurrent;
}
}
else if (taxCalculationMethod == PajakTypeData.TaxCalculationMethod.WeightedAverage)
{
decimal brutoAvg = (brutoPrev + brutoCurrent) / lengthCurrentPeriod;
hasil = brutoAvg * lengthCalculationPeriod;
hasil = hasil + brutoPrevBonus;
}
else if (taxCalculationMethod == PajakTypeData.TaxCalculationMethod.Forecast)
{
hasil = brutoPrev + brutoPrevBonus + brutoCurrent * lengthForecastPeriod;
}
else if (taxCalculationMethod == PajakTypeData.TaxCalculationMethod.Annually)
{
hasil = brutoCurrent * lengthCalculationPeriod;
}
return(hasil);
}
