i have a clients they want thier interior works to be done like, kitchen, wardrobe, furniture and fall ceiling in thier own house.
at same time i have carpenters friends who can do this job..
my role is i get advance from my clients,buy materials,and hire carpenter and finish the job.. so i have to issue a invoice to my client . with out disclosing my expenses in materials, amount paid to hired carpenter.. so in what category in cum under SAC and how can i register my self in gst