While we charge in US Dollars, we're an international company (Canadian) with no operations in the US, which means that a W-9 form does not apply to ScalePad.
As a result, our software is tax-free for any US customer since we are not subject to the IRS's jurisdiction.
We can provide you with any necessary information, such as a W-8BEN and our Canada Revenue Agency Tax ID by contacting our Partner Success Team at success@scalepad.com.
Our official address can also be found at: http://scalepad.com/contact