Keep or Break CD Calculator

To add the keep or break cd calculator to your site simply copy and paste the HTML below. Click here to view a working copy of the break cd calculator.

<script language="javascript">
    function daCalcBcd()
    {
        var newApy=1 + document.getElementById('daBcdNewApy').value.replace('%','') / 100;
        var oldApy=1 + document.getElementById('daBcdOldApy').value.replace('%','') / 100;
        var currentBalance=document.getElementById('daBcdBalance').value.replace('$','').replace(',','');
        var remainingYears=document.getElementById('daBcdTime').value / document.getElementById('daBcdPeriod').options[document.getElementById('daBcdPeriod').selectedIndex].value;
        var penaltyYears=document.getElementById('daBcdPenalty').value / document.getElementById('daBcdPenaltyPeriod').options[document.getElementById('daBcdPenaltyPeriod').selectedIndex].value;
        var oldEarnings=currentBalance * Math.pow(oldApy, remainingYears);
        var newEarnings=currentBalance*Math.pow(oldApy,-penaltyYears) * Math.pow(newApy, remainingYears);
        var diff=newEarnings-oldEarnings;
        var result='By breaking your existing CD you will have <b>' + formatCurrency(newEarnings) + '</b> at the end of ' + document.getElementById('daBcdTime').value + ' ' + document.getElementById('daBcdPeriod').options[document.getElementById('daBcdPeriod').selectedIndex].text;
        result += ' vs <b>' + formatCurrency(oldEarnings) + '</b> if you do not break the CD.';
        if (diff>0) 
        {
            result+=' You will <u>gain</u> <b>' + formatCurrency(diff) + '</b> by breaking this CD.  You should break the CD.';
        } else {
            result+=' You will <u>loose</u> <b>' + formatCurrency(diff*-1) + '</b> by breaking this CD.  You should <u>not</u> break the CD.';
        }
        document.getElementById('daBcdResult').innerHTML=result;
    }
    
    function formatCurrency(num) {
        var numStr=parseFloat(num).toFixed(2);
        var parts=numStr.split('.');
        var rgx = /(\d+)(\d{3})/;
        while (rgx.test(parts[0])) {parts[0] = parts[0].replace(rgx, '$1' + ',' + '$2');}
        return '$' + parts[0] + '.' + parts[1];
    }
</script>

<div class="daBcdCalc">
 <table width="100%">
  <tr>
   <td>New CD APY</td><td><input type="text" id="daBcdNewApy" value="5.25%"></td>
   <td>Existing CD APY</td><td><input type="text" id="daBcdOldApy" value="4.25%"></td>
  </tr>
  <tr>
   <td>Current Balance</td><td><input type="text" id="daBcdBalance" value="$10,000"></td>
   <td>Time Remaining</td><td><input type="text" id="daBcdTime" value="12" style="width:50px;"> <select id="daBcdPeriod"><option value="1">years</option><option value="12" selected="selected">months</option><option value="365">days</option></select></td>
  </tr>
  <tr>
   <td>Interest Penalty</td><td><input type="text" id="daBcdPenalty" value="2" style="width:50px;"> <select id="daBcdPenaltyPeriod"><option value="1">years</option><option value="12" selected="selected">months</option><option value="365">days</option></select></td>
   <td></td>
   <td><input type="button" value="Calculate" onclick="daCalcBcd();" /></td>
  </tr>
 </table>
 <div id="daBcdResult"></div>
</div>

<p style="text-align:right;"><a href="http://www.depositaccounts.com/tools/break-cd-calculator.aspx">Break CD Calculator</a> provided by DepositAccounts.com.</p>
</div>