That's not correct English, unless you're asking it as a question.

If there was something separating now from the rest of the sentence, like 'only' then it would sound like correct english e.g. "only now(,) are we a committee" but it still sounds quite dated.

The verb is (almost) always at the second position, so if you've got something other than the subject pronoun at the first position, it should come after the verb. Time adverbials are commonly put at the beginning, and sometimes even the object if you want to emphasize it.