public override decimal CalIncomeTax(decimal annualSalary)
        {
            var taxService = TaxServiceFactory.GetTaxService(annualSalary);

            if (taxService == null)
            {
                return(-1);
            }

            return(Math.Round(taxService.CalIncomeTax(annualSalary) / 12, 2));
        }
 public PayslipServiceBase(IDataContextService contextService, ILogService logService)
 {
     ContextService    = contextService;
     LogService        = logService;
     TaxServiceFactory = new TaxServiceFactory();
 }