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samuelkordik/paystub.php

Created June 14, 2014 17:41
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Simple Paystub Calculator
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paystub.php
<?php
/**
*
* Simple Paystub Calculator
* Created by Samuel Kordik
* Copyright 2014 Samuel Kordik
* Licensed under MIT license -- feel free to use modify or extend as you wish, just attribute me in the source code.
*
* This single page form calculates paychecks based on a biweekly pay schedule using 2014 rates.
* It stores rate, # of deductions, pretax and posttax withdrawals in a cookie to simplify
* future calculations.
*
*/
$paystub = (isset($_COOKIE['paystub'])) ? json_decode($_COOKIE['paystub'], true) : array('rate'=>false, 'pretax'=>0, 'posttax'=>0, 'deductions'=>2);
if (isset($_POST['rate'])) {
$paystub['deductions'] = filter_input(INPUT_POST, 'deductions', FILTER_SANITIZE_NUMBER_INT);
$withheld = 151.90 * $paystub['deductions'];
$paystub['pretax'] = filter_input(INPUT_POST, 'pretax');
$paystub['posttax'] = filter_input(INPUT_POST, 'posttax');
$week1hours = filter_input(INPUT_POST, 'week1hours', FILTER_SANITIZE_NUMBER_INT);
$week2hours = filter_input(INPUT_POST, 'week2hours', FILTER_SANITIZE_NUMBER_INT);
$paystub['rate'] = filter_input(INPUT_POST, 'rate');
$week1 = ($week1hours > 40) ? ((($week1hours - 40) * 1.5) + 40)*$paystub['rate'] : $week1hours * $paystub['rate'];
$week2 = ($week2hours > 40) ? ((($week2hours - 40) * 1.5) + 40)*$paystub['rate'] : $week2hours * $paystub['rate'];
$total = $week1 + $week2;
$taxable = $total - $withheld - $paystub['pretax'];
if ($taxable < 436) {
$tax = 0.1*($taxable - 87);
} elseif ($taxable < 1506) {
$tax = 34.9 + (0.15*($taxable - 436));
} elseif ($taxable < 3523) {
$tax = 195.4 + (0.25*($taxable - 1506));
} elseif ($taxable < 7254) {
$tax = 699.65 + (0.28*($taxable - 3523));
} elseif ($taxable < 15667) {
$tax = 1744.33 + (0.33*($taxable - 7254));
} elseif ($taxable < 15731) {
$tax = 4520.62 + (0.35*($taxable - 15667));
} else {
$tax = 4543.02 + (0.396*($taxable - 15731));
}
if ($tax < 0) $tax = 0;
$tax = round($tax, 2);
$ss = round(($total - $paystub['pretax']) * 0.062, 2);
$mc = round(($total - $paystub['pretax']) * 0.0145, 2);
$pay = round($total - $tax - $ss - $mc - $paystub['posttax'], 2);
setcookie('paystub', json_encode($paystub));
}
?>
<html>
<head>
<title>Instant Paystub Calculator</title>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
<!-- Optional theme -->
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap-theme.min.css">
<!-- Latest compiled and minified JavaScript -->
<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<form action="#" method="post">
<h3 class="title">Enter Your Hours and Rate Here</h3>
<div class="well">
<div class="form-group">
<label for="week1hours">Week One Hours:<input class="form-control" type="number" id="week1hours" name="week1hours" required="" <?php echo ($week1hours) ? 'value="' . $week1hours .'"' : "";?>/></label>
</div>
<div class="form-group">
<label for="week2hours">Week Two Hours:<input class="form-control" type="number" id="week2hours" name="week2hours" required="" <?php echo ($week2hours) ? 'value="' . $week2hours .'"' : "";?>/></label>
</div>
<div class="form-group">
<label for="rate">Hourly Rate:<input type="text" id="rate" class="form-control" name="rate"
<?php echo ($paystub['rate']) ? 'value="' . $paystub['rate'] .'"' : "";?>/></label>
</div>
<div class="form-group">
<label for="pretax">Pretax withdrawals:<input type="text" id="pretax" name="pretax" class="form-control" value="<?php echo($paystub['pretax']);?>"/></label></div>
<div class="form-group">
<label for="posttax">After Tax withdrawals:<input type="text" id="posttax" name="posttax" class="form-control" value="<?php echo($paystub['posttax']);?>"/></label></div>
<div class="form-group">
<label for="deductions">How many deductions?<select class="form-control" name="deductions" id="deductions">
<?php
for($i=1; $i<=4; $i++) {
echo '<option val="'.$i.'"';
echo ($paystub['deductions']==$i) ? ' selected>' : '>';
echo $i . '</option>';
}
?>
</select>
</label>
</div>
<button type="submit" class="btn btn-primary">Submit</button>
</div>
</form>
<?php
if (isset($_POST['rate'])) {
?>
<h3>Here's Your Results:</h3>
<div class="well">
<strong>Total Pay:&nbsp;</strong>$<?php echo $total;?><br/>
<strong>Pretax withdrawals:&nbsp;</strong>$<?php echo $pretax;?><br/>
<strong>Income Tax Withheld:&nbsp;</strong>$<?php echo $tax;?><br/>
<strong>Social Security Tax:&nbsp;</strong>$<?php echo $ss;?><br/>
<strong>Medicare Tax:&nbsp;</strong>$<?php echo $mc;?><br/>
<strong>After tax withdrawals:&nbsp;</strong>$<?php echo $posttax;?><br/>
<strong>Net Pay:&nbsp;</strong>$<?php echo $pay;?><br/>
</div>
<?php } ?>
</div>
<p class="help-block">This page uses cookies to keep track of the rate you enter. No information is saved on the server.</p>
</body>
</html>
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