ZenContract caters for the ability to have multiple different tax regions set that you can then assign to various templates for sending out to customers.
To add or edit your tax regions and rates, go to Admin/Settings and choose the Tax tab.
Here you can add the Tax Regions that you have by clicking on the blue Create New Tax Region button. Most countries have a single tax region, like GST or VAT, but some countries have multiple regions which can be applied. Tax Regions can be inactive or active as you choose.
Click the blue Create button when you're ready. You will be taken to the Tax region page.
To edit an existing tax region, simply click on the blue name of the tax region to enter the edit process.
To edit the tax component or rate, click on the Tax Component tab. Click on the blue Create New Tax Component for that tax region. You can set multiple components for a region.
You can also set if the tax component is compound or not. Click the blue Create button to save.
Have a watch of the below video to walk you through this process.