Publishing game in steam

Hi! Rookie ask few publishing question. I have published my gameprojects in minor places and some bundles. If my game passes someday greenlight. Do I have to be registered to steamworks that can publish game or how that is going. I know that when passes Valve contacts, but I have to tell my personal information and bank account and tax informations? Or do I have to tell them when first game passes??

You’ll need steamworks if you wish to use any of Steam’s features, other than that this seems like something better suited to ask a Valve representative than here in these forums.