--- /dev/null
+<!DOCTYPE html>
+<html>
+<head>
+<script src="tax.js"></script>
+<script src="tax_ui.js"></script>
+<style>
+ td { padding: .5em; vertical-align: top}
+ textarea { height: 12em; }
+ input { width: 7em }
+ .output { padding: 1em; background-color: #eee; border: thin solid #888; width: max-content; }
+ .privacy_policy { margin-top: 5em; }
+</style>
+</head>
+<body onload="calculate()">
+<h1>Inverse income tax tool</h1>
+<p>What gross salary is needed to provide a specified after-tax salary?</p>
+
+<form>
+<table>
+<tr>
+<td>
+Federal deductible<br/><input id="deductible_1" value="24000" onchange="calculate()" oninput="calculate()"/>
+</td>
+<td>
+State deductible<br/><input id="deductible_2" value="8258" onchange="calculate()" oninput="calculate()"/>
+</td>
+</tr>
+<tr>
+<td>
+Federal tax table<br/>
+<textarea id="tax_table_1" onchange="calculate()" oninput="calculate()"> 0 10
+ 18651 15
+ 75901 25
+153101 28
+233351 33
+416701 35
+470001 39.6</textarea>
+</td>
+<td>
+State tax table<br/>
+<textarea id="tax_table_2" onchange="calculate()" oninput="calculate()"> 0 1
+ 16030 2
+ 38002 4
+ 59978 6
+ 83258 8
+ 105224 9.3
+ 537500 10.3
+ 644998 11.3
+1000000 12.3
+1074996 13.3</textarea>
+<br/>(Initial table is California's)
+</td>
+</tr>
+<tr>
+<td colspan="2">
+Desired after-tax salary</br>
+<input id="after_tax" value="100000" onchange="calculate()" oninput="calculate()">
+</td></tr>
+</table>
+</form>
+
+<p class="output">
+ <strong><span id="before_tax"></span> before tax</strong>
+ - <span id="tax_1"></span> federal tax
+ - <span id="tax_2"></span> state tax
+ = <span id="after_tax_verification"></span> after tax.
+</p>
+
+<p class="privacy_policy">Privacy policy: All calculations are client-side; no figures are sent to any server.</p>
+</body>
+</html>
projects / inverse-tax / blobdiff