I am currently working with an individual to help him figure out what all he needs to register his new sole proprietor business in the state of Missouri. What are the forms needed to legally start his business and optain his tax and business id's? He is the only owner and has no employees under him. Where would he optain and file the forms within the state? He is also, currently setting up his business name and EIN number, but is unaware of what else he needs.

Any help would greatly be appreciated.

Thanks.