Tax Calculator

mfyt_tax_calculator.js

(function(window, document, $){
  'use strict';

  var CalculatorTax = function($container) {
    this.$container = $container;
  };

  CalculatorTax.prototype = {
    init: function(){
      this.InitAutoNumeric();
      this.InitCalculateButton();
      this.InitResetButton();
      this.initBackButton();
    },
    InitAutoNumeric: function(){
      this.$container.find('#OfferTotal').autoNumeric('init', {
        vMin: '0.00',
        vMax: '999999999999999999999999'
      });
    },
    InitCalculateButton: function() {
      var self = this;
      this.$container.find('form#tax_calculator').on('submit', function(e) {
        e.preventDefault();
        self.Calculate();
        self.$container.find("#tbTaxCalc").addClass('fade');
        setTimeout(function(){
          self.$container.find("#tbTaxCalc").addClass('hide');
          self.$container.find("#tbResult").removeClass('hide').removeClass('fade');
        }, 500);
      });
    },
    InitResetButton: function() {
      var self = this;
      this.$container.find('.tax_reset').on('click', function(e) {
        e.preventDefault();
        self.Reset();
      });
    },
    initBackButton: function() {
      var self = this;
      this.$container.find('#tbResult .tax_back').on('click', function(e) {
        e.preventDefault();
        $(this).parents('#tbResult').addClass('fade');
        setTimeout(function(){
          self.$container.find("#tbResult").addClass('hide');
          self.$container.find('#tbTaxCalc').removeClass('hide').removeClass('fade');
        }, 500);
      });
    },
    formatCurrency: function(s, hasCurrencySymbol) {
      if (/[^0-9\.]/.test(s)) {
        return "N/A";
      }
      s = s.replace(/^(\d*)$/, "$1.");
      s = (s + "00").replace(/(\d*\.\d\d)\d*/, "$1");
      s = s.replace(".", ",");
      var re = /(\d)(\d{3},)/;
      while (re.test(s)) {
        s = s.replace(re, "$1,$2");
      }
      s = s.replace(/,(\d\d)$/, ".$1");
      return hasCurrencySymbol ? "￥" + s.replace(/^\./, "0.") : s.replace(/^\./, "0.");
    },
    Reset: function() {
      $("#BuyerPreOwnProperty").val("").trigger("chosen:updated");
      $("#BuyerChinese").val("").trigger("chosen:updated");
      $("#Mortgage").val("").trigger("chosen:updated");
      $("#OfferTotal").val("").trigger("chosen:updated");
      $("#Escrow").val("").trigger("chosen:updated");
    },
    Calculate: function() {
      var self = this;
      var Size = document.getElementById("Size").value;
      var CertificateYear = document.getElementById("CertificateYear").value;
      var OwnerChinese = document.getElementById("OwnerChinese").value;
      var OwnerOtherProperty = document.getElementById("OwnerOtherProperty").value;
      var OriginalPuchaseTotal = document.getElementById("OriginalPuchaseTotal").value;
      var ExpectedSellingTotal = document.getElementById("ExpectedSellingTotal").value;
      var EvaluationTotal = document.getElementById("EvaluationTotal").value;
      var BuyerPreOwnProperty = document.getElementById("BuyerPreOwnProperty").value;
      var BuyerChinese = document.getElementById("BuyerChinese").value;
      var Mortgage = document.getElementById("Mortgage").value;
      var Escrow = document.getElementById("Escrow").value;
      // var OfferTotal = document.getElementById("OfferTotal").value;
      var OfferTotal = this.$container.find('#OfferTotal').autoNumeric('get');
      //S&P Total (Escrow)
      var totalescrow= this.Gettotalescrow(Escrow, EvaluationTotal, OfferTotal);
      //Tax and Fees Base
      var taxbase = this.Gettaxbase(Mortgage,Escrow, EvaluationTotal, OfferTotal);
      //Deed Tax
      var DeedTax = this.GetDeedTax(Size, taxbase, BuyerPreOwnProperty);
      //Business Tax (Total)
      var BusinessTaxTotal = this.GetBusinessTaxTotal(CertificateYear, Size, taxbase);
      //Business Tax (Difference)
      var BusinessTaxDifference = this.GetBusinessTaxDifference(CertificateYear, Size, taxbase, OriginalPuchaseTotal);
      //Income Tax (Total)
      var IncomeTaxTotal = this.GetIncomeTaxTotal(CertificateYear, OwnerOtherProperty, taxbase);
      //Income Tax (Difference)
      var IncomeTaxDifference = this.GetIncomeTaxDifference(CertificateYear, OwnerOtherProperty, taxbase, OriginalPuchaseTotal, Size);
      //Minimum Business Tax+Income Tax
      var MinimumBusinessTaxAndIncomeTax = this.GetMinimumBusinessTaxAndIncomeTax(Size, CertificateYear, BusinessTaxTotal, IncomeTaxTotal, BusinessTaxDifference, IncomeTaxDifference);
      //Transaction Adminstration Fee
      var TransactionAdminstrationFee = this.GetTransactionAdminstrationFee(Size);
      //Equity Registration Fee
      var EquityRegistrationFee = this.GetEquityRegistrationFee();
      //Encumbrance Mortgage Registration Fee
      var EncumbranceMortgageRegistrationFee = this.GetEncumbranceMortgageRegistrationFee();
      //Evaluation Service Charge
      var EvaluationServiceCharge = this.GetEvaluationServiceCharge(totalescrow);
      //Contract Notarial Fee
      var ContractNotarialFee = this.GetContractNotarialFee(OwnerChinese, totalescrow, BuyerChinese);
      //Agency Service Charge
      var AgencyServiceCharge = this.GetAgencyServiceCharge(OfferTotal);
      //Most Mortgage
      var MostMortgage = this.GetMostMortgage(Mortgage, BuyerPreOwnProperty);
      //Most Mortgage Total
      var MostMortgageTotal = parseFloat(MostMortgage)*parseFloat(totalescrow);
      //Rest Cash pay to Owner above Evaluation
      var RestCashpayToOwneraboveEvaluation = this.GetRestCashpayToOwneraboveEvaluation(OfferTotal, totalescrow);
      //Mortgage Down Payment
      var MortgageDownPayment = this.GetMortgageDownPayment(totalescrow, MostMortgage);
      //TaxAndFeesTotal
      var TaxAndFeesTotal = this.GetTaxAndFeesTotal(MinimumBusinessTaxAndIncomeTax, DeedTax, TransactionAdminstrationFee, EquityRegistrationFee, EncumbranceMortgageRegistrationFee, EvaluationServiceCharge, ContractNotarialFee, AgencyServiceCharge);
      //Cash Needed Total
      var CashNeededTotal = this.GetCashNeededTotal(TaxAndFeesTotal, RestCashpayToOwneraboveEvaluation, MortgageDownPayment);

      var result = "";
      document.getElementById("totalescrow").innerText = totalescrow;
      document.getElementById("taxbase").innerText = taxbase;
      document.getElementById("DeedTax").innerText = DeedTax;
      document.getElementById("BusinessTaxTotal").innerText = BusinessTaxTotal;
      document.getElementById("BusinessTaxDifference").innerText = this.GetBusinessTaxDifference1(CertificateYear, Size, taxbase, OriginalPuchaseTotal);
      document.getElementById("IncomeTaxTotal").innerText = IncomeTaxTotal;
      document.getElementById("IncomeTaxDifference").innerText = this.GetIncomeTaxDifference1(CertificateYear, OwnerOtherProperty, taxbase, OriginalPuchaseTotal, Size);
      document.getElementById("MinimumBusinessTaxAndIncomeTax").innerText = MinimumBusinessTaxAndIncomeTax;
      document.getElementById("TransactionAdminstrationFee").innerText = TransactionAdminstrationFee;
      document.getElementById("EquityRegistrationFee").innerText = EquityRegistrationFee;
      document.getElementById("EncumbranceMortgageRegistrationFee").innerText = EncumbranceMortgageRegistrationFee;
      document.getElementById("EvaluationServiceCharge").innerText = EvaluationServiceCharge;
      document.getElementById("ContractNotarialFee").innerText = ContractNotarialFee;
      document.getElementById("AgencyServiceCharge").innerText = AgencyServiceCharge;
      document.getElementById("MostMortgage").innerText = MostMortgage*100;
      document.getElementById("MostMortgageTotal").innerText = MostMortgageTotal;//CertificateYear
      document.getElementById("RestCashpayToOwneraboveEvaluation").innerText = RestCashpayToOwneraboveEvaluation;
      document.getElementById("MortgageDownPayment").innerText = MortgageDownPayment;
      document.getElementById("TaxAndFeesTotal").innerText = TaxAndFeesTotal;
      document.getElementById("CashNeededTotal").innerText = CashNeededTotal;
      // alert("result: \n" + result);
      this.$container.find("#tbResult span").each(function (i) {
          $(this).text(self.formatCurrency($(this).text(), false));
      });
    },
    GetDeedTax: function(Size, EvaluationTotal, BuyerPreOwnProperty) {
        //=if("Size">=144, "Evaluation Total"*3%, if("Buyer Pre-own Property">0, "Evaluation Total"*3%, if("Size">=90, "Evaluation Total"*1.5%, "Evaluation Total"*1%)))
        if (parseFloat(Size) >= 144) {
            return parseFloat(EvaluationTotal) * 0.03;
        }
        //else if (parseFloat(Size) >= 90 && parseFloat(Size) < 144) {
        else {
            if (BuyerPreOwnProperty > 0) {
                return parseFloat(EvaluationTotal) * 0.03;
            }
            else {
                if (parseFloat(Size) >= 90) {
                    return parseFloat(EvaluationTotal) * 0.015;
                }
                else {
                    return parseFloat(EvaluationTotal) * 0.01;
                }
            }
        }
    },
    Gettotalescrow: function(Escrow, EvaluationTotal, OfferTotal){
        //=if("Size">=144, "Evaluation Total"*3%, if("Buyer Pre-own Property">0, "Evaluation Total"*3%, if("Size">=90, "Evaluation Total"*1.5%, "Evaluation Total"*1%)))
        if (OfferTotal<EvaluationTotal) {
            return OfferTotal;
        }
        //else if (parseFloat(Size) >= 90 && parseFloat(Size) < 144) {
        else {
            if (Escrow>0) {
                return EvaluationTotal;
            }
            else
            {
                return OfferTotal;
            }
        }
    },
    Gettaxbase: function(Mortgage,Escrow, EvaluationTotal, OfferTotal) {
        //=if("Size">=144, "Evaluation Total"*3%, if("Buyer Pre-own Property">0, "Evaluation Total"*3%, if("Size">=90, "Evaluation Total"*1.5%, "Evaluation Total"*1%)))
        if (parseFloat(Mortgage) === 0){
                if (Escrow > 0){
                    return EvaluationTotal;
                }
                else{
                    if (OfferTotal<EvaluationTotal)
                        {
                            return EvaluationTotal;
                        }
                        else
                        {
                            return OfferTotal;
                        }
                }
        }
        //else if (parseFloat(Size) >= 90 && parseFloat(Size) < 144) {
        else {
            if (Escrow > 0) {
                return EvaluationTotal;
            }
            else
            {
                if (OfferTotal<EvaluationTotal)
                        {
                            return EvaluationTotal;
                        }
                        else
                        {
                            return OfferTotal;
                        }
            }
        }
    },
    GetBusinessTaxTotal: function(CertificateYear, Size, EvaluationTotal) {
        //=if("Certificate Year">=5, if("Size"<144, 0, "Evaluation Total"*5.60%), "Evaluation Total"*5.60%)
        if (parseFloat(CertificateYear) > 0) {
            if (parseFloat(Size) < 144) {
                return 0;
            }
            else {
                return parseFloat(EvaluationTotal) * 0.056;
            }
        }
        else {
            return parseFloat(EvaluationTotal) * 0.056;
        }
    },
    GetBusinessTaxDifference: function(CertificateYear, Size, EvaluationTotal, OriginalPuchaseTotal) {
        //=if("Certificate Year">=5, if("Size"<144, 0, ("Evaluation Total"-"Original Purchase Total")*5.60%), if("Size"<144, ("Evaluation Total"-"Original Purchase Total")*5.60%, N/A)
        if (parseFloat(CertificateYear) >0) {
            if (parseFloat(Size) < 144) {
                return 0;
            }
            else {
                //return 0;
                return (parseFloat(EvaluationTotal) - parseFloat(OriginalPuchaseTotal)) * 0.056;
            }
        }
        else {
            if (parseFloat(Size) < 144) {
                return (parseFloat(EvaluationTotal) - parseFloat(OriginalPuchaseTotal)) * 0.056;
            }
            else {
                return "N/A";   //wangyazhe
            }
        }
    },
    GetBusinessTaxDifference1: function(CertificateYear, Size, EvaluationTotal, OriginalPuchaseTotal) {
        //=if("Certificate Year">=5, if("Size"<144, 0, ("Evaluation Total"-"Original Purchase Total")*5.60%), if("Size"<144, ("Evaluation Total"-"Original Purchase Total")*5.60%, N/A)
        if (parseFloat(CertificateYear) >0) {
            if (parseFloat(Size) < 144) {
                return 0;
            }
            else {
                //return 0;
                return (parseFloat(EvaluationTotal) - parseFloat(OriginalPuchaseTotal)) * 0.056;
            }
        }
        else {
            if (parseFloat(Size) < 144) {
                return (parseFloat(EvaluationTotal) - parseFloat(OriginalPuchaseTotal)) * 0.056;
            }
            else {
                return "N/A";  //wangyazhe
            }
        }
    },
    GetIncomeTaxTotal: function(CertificateYear, OwnerOtherProperty, EvaluationTotal) {
        //=if("Certificate Year">=5, if("Owner Other Property"=0, 0, "Evaluation Total"*1.00%), "Evaluation Total"*1.00%)
        if (parseFloat(CertificateYear) >0) {
            if (parseFloat(OwnerOtherProperty) === 0) {
                return 0;
            }
            else {
                return parseFloat(EvaluationTotal) * 0.01;
            }
        }
        else {
            return parseFloat(EvaluationTotal) * 0.01;
        }
    },
    GetIncomeTaxDifference: function(CertificateYear, OwnerOtherProperty, EvaluationTotal, OriginalPuchaseTotal, Size) {
        //=if("Certificate Year">=5, if("Owner Other Property"=0, 0, ("Evaluation Total"-"Original Purchase Total")*20%), if("Size"<144, ("Evaluation Total"-"Original Purchase Total")*20%, N/A))
        if (parseFloat(CertificateYear) >0) {
            if (parseFloat(OwnerOtherProperty) === 0) {
                return 0;
            }
            else {
                return (parseFloat(EvaluationTotal) - parseFloat(OriginalPuchaseTotal)) * 0.2;
            }
        }
        else {
            if (parseFloat(Size) < 144) {
                return (parseFloat(EvaluationTotal) - parseFloat(OriginalPuchaseTotal)) * 0.2;
            }
            else {
                return 0;  //wangyazhe
            }
        }
    },
    GetIncomeTaxDifference1: function(CertificateYear, OwnerOtherProperty, EvaluationTotal, OriginalPuchaseTotal, Size) {
        //=if("Certificate Year">=5, if("Owner Other Property"=0, 0, ("Evaluation Total"-"Original Purchase Total")*20%), if("Size"<144, ("Evaluation Total"-"Original Purchase Total")*20%, N/A))
        if (parseFloat(CertificateYear) >0) {
            if (parseFloat(OwnerOtherProperty) === 0) {
                return 0;
            }
            else {
                return (parseFloat(EvaluationTotal) - parseFloat(OriginalPuchaseTotal)) * 0.2;
            }
        }
        else {
            if (parseFloat(Size) < 144) {
                return (parseFloat(EvaluationTotal) - parseFloat(OriginalPuchaseTotal)) * 0.2;
            }
            else {
                return "N/A";  //wangyazhe
            }
        }
    },
    GetMinimumBusinessTaxAndIncomeTax: function(Size, CertificateYear, BusinessTaxTotal, IncomeTaxTotal, BusinessTaxDifference, IncomeTaxDifference) {
        //=if("Size">=144, //
        //if("Certificate Year"<5,
        //("Business Tax (Total)"+"Income Tax (Total)"),
        //if(("Business Tax (Total)"+"Income Tax (Total)")<("Business Tax (Difference)"+"Income Tax (Difference)"),
        //("Business Tax (Total)"+"Income Tax (Total)"),
        //("Business Tax (Difference)"+"Income Tax (Difference)"))),
        //if(("Business Tax (Total)"+"Income Tax (Total)")<("Business Tax (Difference)"+"Income Tax (Difference)"),
        //("Business Tax (Total)"+"Income Tax (Total)"),
        //("Business Tax (Difference)"+"Income Tax (Difference)")))
        if (parseFloat(Size) >= 144) {
            if (parseFloat(CertificateYear) === 0) {
                return parseFloat(BusinessTaxTotal) + parseFloat(IncomeTaxTotal);
            }
            else {
                if (parseFloat(BusinessTaxTotal) + parseFloat(IncomeTaxTotal) < parseFloat(BusinessTaxDifference) + parseFloat(IncomeTaxDifference)) {
                    return parseFloat(BusinessTaxTotal) + parseFloat(IncomeTaxTotal);
                }
                else {
                    return parseFloat(BusinessTaxDifference) + parseFloat(IncomeTaxDifference);
                }
            }
        }
        else {
            if (parseFloat(BusinessTaxTotal) + parseFloat(IncomeTaxTotal) < parseFloat(BusinessTaxDifference) + parseFloat(IncomeTaxDifference)) {
                return parseFloat(BusinessTaxTotal) + parseFloat(IncomeTaxTotal);
            }
            else {
                return parseFloat(BusinessTaxDifference) + parseFloat(IncomeTaxDifference);
            }
        }
    },
    GetTransactionAdminstrationFee: function(Size) {
        //="Size"*6
        return parseFloat(Size) * 6;
    },
    GetEquityRegistrationFee: function() {
        //Fixed
        return 100;
    },
    GetEncumbranceMortgageRegistrationFee: function() {
        //Fixed
        return 80;
    },
    GetEvaluationServiceCharge: function(EvaluationTotal) {
        //="Evaluation Total"*0.20%
         if (parseFloat(Mortgage) === "0") {
            return 0;
        }
        else {
            return parseFloat(EvaluationTotal) * 0.002;
        }

    },
    GetContractNotarialFee: function(OwnerChinese, EvaluationTotal, BuyerChinese) {
        //=if("Owner Chinese or Not"=0, (("Evaluation Total"-500000)*0.25%+1500), if("Buyer Chinese or Not"=0, (("Evaluation Total"-500000)*0.25%+1500), 0))
        if (parseFloat(OwnerChinese) === 0) {
            return (parseFloat(EvaluationTotal) - 500000) * 0.0025 + 1500;
        }
        else {
            if (parseFloat(BuyerChinese) === 0) {
                return (parseFloat(EvaluationTotal) - 500000) * 0.0025 + 1500;
            }
            else {
                return 0;
            }
        }
    },
    GetAgencyServiceCharge: function(OfferTotal) {
        return parseFloat(OfferTotal) * 0.01;
    },
    GetMostMortgage: function(Mortgage, BuyerPreOwnProperty) {
        //=if("Mortgage or Not"=0, 0, if("Buyer Pre-own Property"=0, 70%, 40%))
        if (parseFloat(Mortgage) === 0) {
            return 0;
        }
        else {
            if (parseFloat(BuyerPreOwnProperty) === 0) {
                return 0.7;
            }
            else {
                return 0.4;
            }
        }
    },
    GetMostMortgageTotal: function(OfferTotal, EvaluationTotal, MostMortgage) {
        //=if("Offer Total"<"Evaluation Total", "Offer Total", "Evaluation Total)*"Mortgage %"
        if (parseFloat(OfferTotal) < parseFloat(EvaluationTotal)) {
            return parseFloat(OfferTotal) * parseFloat(MostMortgage);
        }
        else {
            return parseFloat(EvaluationTotal) * parseFloat(MostMortgage);
        }
    },
    GetRestCashpayToOwneraboveEvaluation: function(OfferTotal, EvaluationTotal) {
        //=if("Offer Total"<"Evaluation Total", 0, ("Offer Total"-"Evaluation Total"))

            return parseFloat(OfferTotal) - parseFloat(EvaluationTotal);

    },
    GetMortgageDownPayment: function(OfferTotal, MostMortgage) {
        //=if("Offer Total"<"Evaluation Total", "Offer Total", "Evaluation Total)*(1-"Mortgage %")

            return parseFloat(OfferTotal) * (1 - parseFloat(MostMortgage));

    },
    GetTaxAndFeesTotal: function(MinimumBusinessTaxAndIncomeTax, DeedTax, TransactionAdminstrationFee, EquityRegistrationFee, EncumbranceMortgageRegistrationFee, EvaluationServiceCharge, ContractNotarialFee, AgencyServiceCharge) {
        //=SUM("Minimum Business Tax+Income Tax" and rest Tax and Fees)
        return parseFloat(MinimumBusinessTaxAndIncomeTax) + parseFloat(DeedTax) + parseFloat(TransactionAdminstrationFee) + parseFloat(EquityRegistrationFee) + parseFloat(EncumbranceMortgageRegistrationFee) + parseFloat(EvaluationServiceCharge) + parseFloat(ContractNotarialFee);
    },
    GetCashNeededTotal: function(TaxAndFeesTotal, RestCashpayToOwneraboveEvaluation, MortgageDownPayment) {
        //="Tax and Fees Total"+"Rest Cash pay to Owner above Evaluation"+"Mortgage Down Payment"
        return parseFloat(TaxAndFeesTotal) + parseFloat(RestCashpayToOwneraboveEvaluation) + parseFloat(MortgageDownPayment);
    }
  };


  $(document).ready(function() {
    var Calculator = new CalculatorTax($('.tax-calculator-wrapper'));
    Calculator.init();
  });

})(window, document, jQuery);