This Ruling has been obsoleted in part by AN 94(4)
The answers to the questions raised in your letter are as follows:
New construction includes services up to the occupancy of the first tenant.
It is still permissible to show the total with the words, "Tax Included" as long as records are maintained to support the various parts of the total amount billed.
The service portion is the total bill (including profit) minus the cost of material (including sales tax). The general contractor should purchase the services of the subcontractor on resale.
The sales tax is payable when the services are rendered. In this instance, sales tax should be applied to the installments.
August 1, 1989