OrderForms.com allows you to charge your customers tax on product purchase.
First, under ECommerce on the left hand sidebar, click Tax Rates
Click on Tax Rates.
On the right, click add new tax rate.
Name your tax something that makes sense for your business (VAT, Govt Tax, Surcharge, etc).
Next, set the rate in percentage on the right.
Select the region where you want the tax to be contextually displayed.
The tax kicks in on your order form checkout the moment the prospective customer enters their billing / shipping address.
IMPORTANT: If you don't see the tax show up on your order form, it may be because you haven't toggled the Taxable? switch on your product options. Please configure that using this article as a primer.
For questions, please email email@example.com for help.