//Get tax rate from tax
public JsonResult GetTaxRate(string fields)
{
decimal taxRate = 0;
Ctx ctx = Session["ctx"] as Ctx;
MCashBookModel objCashBookModel = new MCashBookModel();
taxRate = objCashBookModel.GetTaxRate(ctx, Util.GetValueOfInt(fields));
return(Json(JsonConvert.SerializeObject(taxRate), JsonRequestBehavior.AllowGet));
}