The Inspection Support Network supports your needs for this type of inspection pricing.
Navigate in your ISN to Settings -- Office Settings -- Inspection and Fee Settings-- Taxes
Now click on the tab in the upper left side to Add Tax. Name your tax and insert the tax rate percentage. Be sure to click on Add Tax when you are done.
Now you want to associate a tax to a fee. Click on the Edit Fee button:
A list of all your fees will appear, and simply click which fees are to be associated to this tax:
Now with your taxes set up and in place for each of those services the Inspection Support Network calculates and automates these fees for you!