最新个人所得税计算器源码(含新旧税法比较功能)

<p><style type="text/css">
.tContent { background:#fff; border:1px solid #ccc; padding:15px; position:relative; text-align:left;width:520px; overflow:hidden;}
.tContent input{background:#fff; border:1px solid #dfdfdf; }
.tContent .tChange { right:0px; top:131px; width:150px; position:absolute; }
.tContent .tChange input { width:150px; border:0; }
input.cresult, input.moreTax, input.lessTax, input.stTax { font-family:Verdana, Geneva, sans-serif; font-size:30px; width:150px; }
.moreTax { color:#BA2636; }
.lessTax { color:#008000; }
.stTax { color:#C9C9C9; }
input.taxCount { width:110px; color:#000; font-weight:bold;}
input.buttoner{ background:url(http://img3.cache.netease.com/stock/2011/4/21/201104210004022697b.png) no-repeat; width:63px; height:21px; border:0; text-align:center; margin:5px 0; cursor:pointer;}
td{word-break: break-all;}
/*数据表格*/
.data{ width:550px;}
.header em{border-bottom:0; }
/*数据表格*/
.data em{ border-top:1px solid #DFDFDF; padding:4px 0px; display:inline-block; width:80px; margin:0; color:#626262 }
.data em.fr{ width:100px}
.data em.cust{ color:#464646; background:#fafafa;}
.theader td{ padding:5px 0; }</style><SCRIPT language="javascript">
function round(v,e) //四舍五入取小数点后两位
{
var t=1;
for(;e>0;t*=10,e--);
for(;e<0;t/=10,e++);
return Math.round(v*t)/t;
}
function isNumber(s) //是否由数字构成
{
var digits = "0123456789";
var i = 0;
var sLength = s.length;
while ((i < sLength))
{
var c = s.charAt(i);
if (digits.indexOf(c) == -1) return
false;
i++;
}

return true;
}
function CheckNumeric(theField,s) //整数或小数
{
var ret = true;
var i;
var str=theField.value;
var Temp = new Number(str);

if (str.length == 0)
{
return warnInvalid (theField, s);
ret=false;
}

if (ret)
{
if (Temp.valueOf() != Temp.valueOf
())
{
return warnInvalid
(theField, s);
}
}

return ret;
}
function validateFormInfo(form)
{
var str
var SumTo
var srSum
var taxStartSum_9,taxStartSum_7,InsuSum,TSum_9,TSum_7,yzSum,fySum

srSum=document.form1.inCome.value;//读取工薪数额

taxStartSum_9=document.form1.taxSta_9.value;//9级税制下起征点
taxStartSum_7=document.form1.taxSta_7.value;//7级税制下起征点
InsuSum=document.form1.insuContent.value;//读取保险金额
TSum_9=srSum-taxStartSum_9-InsuSum;//9级税制下最终征税主体
TSum_7=srSum-taxStartSum_7-InsuSum;//7级税制下最终征税主体
var finaltaxbody=srSum-InsuSum;

if (form == null) return true;
str = "请正确输入收入金额。";
if (!CheckNumeric(form.elements
["inCome"],str)) return false; //收入金额

if (!CheckNumeric(form.elements
["insuContent"], "请正确输入社会保险费。")) return false; //各项社会保险费

if (!CheckNumeric(form.elements
["taxSta_9"],"请正确输入起征额。")) return false; //起征额

var diff_0=round(Rate_9(TSum_9)-Rate_7_0(TSum_7),2)
var diff_1=round(Rate_9(TSum_9)-Rate_7(TSum_7),2)
if(diff_0>0){diff_0="减少<span class='lessTax'>"+diff_0+"</span>"} else if(diff_0==0){diff_0="<span class='stTax'>无变化</span>"}else if(diff_0<0){diff_0=-diff_0;diff_0="增加<span class='moreTax'>" + diff_0+"</span>"}
if(diff_1>0){diff_1="减少<span class='lessTax'>"+diff_1+"</span>"} else if(diff_1==0){diff_1="<span class='stTax'>无变化</span>"}else if(diff_1<0){diff_1=-diff_1;diff_1="增加<span class='moreTax'>" +diff_1+"</span>"}
var diff=Rate_9(TSum_9)-Rate_7(TSum_7)
var dataTable=document.getElementById("dataTable")
var taxChange=round(Rate_7(TSum_7)-Rate_9(TSum_9),2);
dataTable.innerHTML="<em class='fr cust'>"+finaltaxbody+"</em><em class='cust'>"+round(Rate_9(TSum_9),2)+"</em><em class='cust'>"+round(Rate_7_0(TSum_7),2)+"</em><em class='cust'>"+diff_0+"</em><em class='cust'>"+round(Rate_7(TSum_7),2)+"</em><em class='cust'>"+diff_1+"</em><br>"+dataTable.innerHTML;

}
//--------------------------------算法--------------
function Rate_9(XSum)//工资薪金
{
var Rate;
var Balan;//数算扣除数
var TSum_9;
if (XSum<=500)
{Rate=3;
Balan=0;
}
if ((500<XSum) && (XSum<=2000))
{Rate=10;
Balan=25;
}
if ((2000<XSum) && (XSum<=5000))
{Rate=15;
Balan=125;
}
if ((5000<XSum) && (XSum<=20000))
{Rate=20;
Balan=375;
}
if ((20000<XSum) && (XSum<=40000))
{Rate=25;
Balan=1375;
}
if ((40000<XSum) && (XSum<=60000))
{Rate=30;
Balan=3375;
}
if ((60000<XSum) && (XSum<=80000))
{Rate=35;
Balan=6375;
}
if ((80000<XSum) && (XSum<=100000))
{Rate=40;
Balan=10375;
}
if (XSum>100000)
{Rate=45;
Balan=15375;
}
TSum_9=(XSum*Rate)/100-Balan
if (TSum_9<0)
{
TSum_9=0
}
return TSum_9
}
function Rate_7(XSum)//工资薪金
{
var Rate;
var Balan;
var TSum_7;
if (XSum<=1500)
{Rate=3;
Balan=0;
}
if ((1500<XSum) && (XSum<=4500))
{Rate=10;
Balan=105;
}
if ((4500<XSum) && (XSum<=9000))
{Rate=20;
Balan=555;
}
if ((9000<XSum) && (XSum<=35000))
{Rate=25;
Balan=1005;
}
if ((35000<XSum) && (XSum<=55000))
{Rate=30;
Balan=2755;
}
if ((55000<XSum) && (XSum<=80000))
{Rate=35;
Balan=5505;
}
if (XSum>80000)
{Rate=45;
Balan=13505;
}
TSum_7=(XSum*Rate)/100-Balan
if (TSum_7<0)
{
TSum_7=0
}
return TSum_7
}

function Rate_7_0(XSum)//工资薪金
{
var Rate;
var Balan;
var TSum_7;
if (XSum<=1500)
{Rate=5;
Balan=0;
}
if ((1500<XSum) && (XSum<=4500))
{Rate=10;
Balan=75;
}
if ((4500<XSum) && (XSum<=9000))
{Rate=20;
Balan=525;
}
if ((9000<XSum) && (XSum<=35000))
{Rate=25;
Balan=975;
}
if ((35000<XSum) && (XSum<=55000))
{Rate=30;
Balan=2725;
}
if ((55000<XSum) && (XSum<=80000))
{Rate=35;
Balan=5475;
}
if (XSum>80000)
{Rate=45;
Balan=13475;
}
TSum_7=(XSum*Rate)/100-Balan
if (TSum_7<0)
{
TSum_7=0
}
return TSum_7
}

//-->
</SCRIPT></p>
<div class="tContent">
<form id="form1" name="form1">
<table border="0" cellspacing="0" width="550">
<tbody>
<tr>
<td valign="top">薪金收入金额数：<input id="inCome" style="width: 130px" name="inCome" type="text" /> 元</td>
<td valign="top">各项社会保险费：<input id="insuContent" style="width: 130px; margin-left: 7px" name="insuContent" value="0" type="text" /> 元</td>
</tr>
<tr>
</tr>
<tr>
<td>现行起征额：<input id="taxSta_9" style="width: 130px; margin-left: 24px" name="taxSta_9" value="2000" type="text" /> 元</td>
<td>调整后起征额：<input id="taxSta_7" style="width: 130px; margin-left: 19px" name="taxSta_7" value="3500" type="text" /> 元</td>
</tr>
<tr>
<td colspan="2"><input class="buttoner" type="button" onclick="validateFormInfo(this.form,1)" name="button" value="计算" /></td>
</tr>
</tbody>
</table>
<table border="0" cellspacing="0" cellpadding="0" width="550" style="background: url(http://img001.photo.21cn.com/photos/album/20110630/o/D25EF9F73742F6E14064BCFFAB0F4B21.jpg) no-repeat left center">
<tbody>
<tr class="theader">
<td width="179"> </td>
<td width="160">初审</td>
<td>二审</td>
</tr>
</tbody>
</table>
<table border="0" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td>
<div class="data"><em class="fr">扣保险费后收入</em><em>调整前税额</em><em>调整后税额</em><em>税额变化</em><em>调整后税额</em><em>税额变化</em></div>
<div id="dataTable" class="data"> </div>
</td>
</tr>
</tbody>
</table>
</form>
<p> </p>
</div>