Russell,
When using vinyl or any "product" you put in the customer's hand you have to charge sales tax on the whole amount (years ago you could break down labor & materials & charge only on the materials - not any more!)
Examples: Letter a vehicle w/ vinyl only - charge ST
Letter a vehicle w/ vinyl and do alittle hand striping - charge ST
Letter and or stripe a vehicle by hand w/ paint only - NO ST (apparently the trucking lobby had enough power years ago to get that exception because hand lettering or striping w/ paint was almost all labor and a small amount of "material".
Letter a
sign w/ vinyl (your substrate or thiers - charge ST
Build a
sign, letter w/ paint or vinyl,your substrate or theirs -charge ST
Decals or cut vinyl that the customer will self apply - charge ST
Basically, if you don't hand letter or stripe a "vehicle" you gotta charge ST.
Hope this helps....if you still have questions you can always call me 508-758-9692.
Karen
PS: Ask me how I know all this info !!!!