/// <summary>
/// This is a straight port from gpCFL windows application
/// </summary>
public decimal CalculateGstOnAdminFee()
{
decimal gstOnOverdueFeeAdmin = 0;
if (fee > 0)
{
// decimal overdueFeeGstExclusive = charges / (1 + (adminFee / fee * (decimal)0.125)); old implementation
decimal overdueFeeGstExclusive;
if (gstRate > 0)
{
overdueFeeGstExclusive = charges / (1 + (adminFee / fee * gstRate));
}
else
{
overdueFeeGstExclusive = charges;
}
decimal overdueFeeAdminGstExclusive = overdueFeeGstExclusive * adminFee / fee;
gstOnOverdueFeeAdmin = GstHelper.CalculateChargeableGst(overdueFeeAdminGstExclusive, gstRate);
}
return(gstOnOverdueFeeAdmin);
}
public decimal CalculateGst()
{
return(GstHelper.CalculateGstCharged(PostAmount, gstRate) + GstHelper.CalculateGstCharged(Tolls, gstRate) + GstHelper.CalculateGstCharged(LettersSent, gstRate));
}