To view this page, you should have the most recent Java installed
32-bit JRE (Java Runtime Environment) 1.8.0_11.
This Applet will run online in your browser, but it is a hybrid you
can also download, install and run it on your own machine as standalone
application. It will start and run faster if you do that. It will also
work safely even if you have disabled Java in your browser.
American sales taxes are complicated to the point of comedy. One of the odd features
is sometimes the vendor remits the tax and sometimes the buyer is supposed to do it.
However, in practice nearly all buyers forget to. For large
ticket items, like yachts, the vendor always collects and remits the tax. For smaller
items, the vendor only collects the tax if the buyer is in the same district.
If you are a business, you don’t have to collect sales taxes from people in
other states unless you have a business presence in that state. In that case, you must
collect just the state tax, not the local tax.
After 12 years, the program is finally complete. It now
handles sales taxes for all American states, counties and cities. The task now is to
correct errors and keep it up to date. If you see any errors, omissions or out of date
information, please let me know.
American sales taxes are preposterously complicated. Every town can have a different
rate, every county and every state. Visitors to a town have no idea what to expect. The
rates are not posted in standard format anywhere on the Internet in computer-readable
format. Every state provides the information in a different computer-hostile way. In many
cases I had to guess what the tax rate was, making a lawyerly call on some obscure
explanation. Businesses may have to remit sales taxes to three different
I hope someday the feds do an honest taxes
measure where all federal, state and local taxes must be posted in standard
computer-friendly format so that your cell-phone can accurately compute the sales or any
To check the rates, just enter a sale amount of $100.00
and the tax amounts will equal the percentages.
If you notice any errors, please let me know.
The calculator is also available with Java source to download. It is designed to be cannibalised, so that
you can use whatever parts of the calculator source code you want in your own code, e.g.
a shopping cart. There are notes in the source on precisely how the taxes are
Java Requirements and Troubleshooting
If, AmericanTax, the above American Sales Tax Calculator signed Java Applet (that can also be run as an application) does not work…
Often problems can be fixed simply by clicking the reload button on your browser.
This signed Java Applet (that can also be run as an application) needs 32-bit or 64-bit Java 1.7 or later.
For best results use the latest 1.8.0_11.
In the Java Control Panel, configure medium security to allow vanilla unsigned applets to run.
It works under any operating system that supports Java e.g. W2K/XP/W2003/Vista/W2008/W7-32/W7-64/W8-32/W8-64/W2012/Linux/LinuxARM/LinuxX86/LinuxX64/Ubuntu/Solaris/SolarisSPARC/SolarisSPARC64/SolarisX86/SolarisX64/OSX
You should see the Applet hybrid above looking much like this screenshot. If you don’t, the following hints should help you get it working:
For this Applet hybrid to work, you must click grant/accept to give it permission to let you copy/paste.
If you refuse to grant permission, the program may crash with an inscrutable stack dump on the console complaining about AccessController.checkPermission.
If the above Applet hybrid appears to freeze-up, click Alt-Esc repeatedly to check for any buried permission dialog box.
If you have certificate troubles, check the installed certificates and remove or update any obsolete or suspected defective certificates. The only certificate used by this program is mindprodcert2014dsa.cer.
Especially if this Applet hybrid has worked before, try clearing the browser cache and rebooting.
To ensure your Java is up to date, check with Wassup. First, download it and run it as an application independent of your browser, then run it online as an Applet to add the complication of your browser.
If the above Applet hybrid does not work, check the Java console for error messages.
If the above Applet hybrid does not work, you might have better luck with the downloadable version available below.
If you are using Mac OS X and would like an improved Look and Feel, download the QuaQua look & feel from randelshofer.ch/quaqua. UnZip the contained quaqua.jar and install it in ~/Library/Java/Extensions or one of the other ext dirs.
If you are using Microsoft Internet Explorer 7, 8 or 9, try another browser. Seriously. Microsoft has taken great pains, over and over, to screw up Java and every other multi-platform standardisation.
If you are using Microsoft Internet Explorer 7, 8 or 9, you must click to allow blocked content permission for Active X to run. This also gives permission to Java to run. Click the Information bar, and then click Allow blocked content. Unfortunately, this also allows dangerous ActiveX code to run. However, you must do this in order to get access to perfectly-safe Java Applets running in a sandbox. This is part of Microsoft’s war on Java. Don’t put up with it! Use a different browser.
If you are using Microsoft Internet Explorer 9, makes sure the Java Plug-In SSV helper add-in is installed and enabled.
If it is not, try reinstalling the Java JRE.
If you have Windows 7 64-bit
and Internet Explorer 64-bit,
in theory you can use 64-bit Java,
but I never been able to get it to work.
Try upgrading to a more recent version of your browser, or try a different browser e.g. Firefox, SeaMonkey, Safari or Avant.
If you still can’t get the program working click HELP for more detail.
If you can’t get the above Applet hybrid working after trying the advice above and from the HELP button below, have bugs to report or ideas to improve the program or its documentation, please send me an email at.
for the current version of American State Sales Tax Calculator. Note it may require adding tables for the states/counties you need. It comes with complete state and county tax tables for all 50 states.
zip for American State Sales Tax Calculator Java source, compiled class files, jar and documentation to run on your own machine either as an application or an Applet.
Runs on any OS that supports Java e.g. W2K/XP/W2003/Vista/W2008/W7-32/W7-64/W8-32/W8-64/W2012/Linux/LinuxARM/LinuxX86/LinuxX64/Ubuntu/Solaris/SolarisSPARC/SolarisSPARC64/SolarisX86/SolarisX64/OSX.
adjusting as necessary to account for where the jar file is.
download ASP PAD XML program description for the current version of American State Sales Tax Calculator.
American State Sales Tax Calculator is free. Full source included.
You may even include the source code, modified or unmodified
in free/commercial open source/proprietary programs that you write and distribute. Non-military use only.