If you wonder what amount of HST you might owe to the taxman, you can you use our HST calculator to estimate that. Just follow the link http://www.pp-accounting.com/GstHst/index or in the menu go to Calculators, then select HST/GST Calculator. It is very simple to use. Just select your tax year, enter your sales including HST and enter input tax credit amount. Input tax credit typically is the amount of HST one paid for fixed or capital assets (i.e. equipment, computers, furniture, etc.). Next, just click on “Calculate” button. And this is it.