Ask for the things mentioned above. If installation is included on bill then the total price has the sales tax before grand total. You just have to ask and it is good to do this before any work is to be done so, you have a full understanding of what you are paying for!
If through a contractor, of course not. Unless that contractor is giving you an itemized bill. Ask for bill of lading to determine material cost.
- cost of materials
- sales tax
- hours worked
This is my exact question do I pay taxes on labor performed for installing flooring??