Learner
1443 Points
Joined December 2008
Form 9 is not mandatory in your case, but you still can file it by showing NIL Sale against statutory forms to make yourself at safe side.
DP1 is mandatory for all dealers.
Check for mismatch time to time.
Currently there is no other provision
For Future :- You need to keep your books of Accounts, Sales / Purchase Invoice , Bank Book / records etc upto 7years, and has to provide to Department as per their demand time to time.