Ontario HST Calculator


This is simple HST calculator for harmonized sale tax calculation in Ontario province in Canada.

Calculator is very easy customizable: you can change color of background, borders and text to match your web site’s theme and change widget title.


  • Widget settings in appearance panel
  • Widget example on the sidebar


  1. Extract the zip file and just drop the contents in the wp-content/plugins/ directory of your WordPress installation
  2. Activate the plugin through the ‘Plugins’ menu in WordPress
  3. Go to Appearance -> Widgets and add the widget to your website sidebar

Please visit plugin home page for more detailed installation and setup instructions


Can I use this widget on commercial website


Please contact us if you have further questions or suggestions.

Contributors & Developers

“Ontario HST Calculator” is open source software. The following people have contributed to this plugin.



  • Initial release