"Yeah, that's what we're working on," Smith said in response to rumours of the sequel.
"It's half a script right now, and we're pulling our loot together. We've got up until the beginning of 2016. By the time we get to May 2016, we're going to be shooting," he added.
Smith, 44, is currently working on a third "Clerks" film, as well as a hockey comedy "Hit Somebody" and a horror film "Moose Jaws".
He recently completed "Yoga Hosers", which stars Johnny Depp and Justin Long.