From sole propr., MO LLC, MO partneship or MO Corp.: Each requires an entity certificate filing.
All Finance, Insurance, And Real Estate businesses/entities need a business license and an EIN.
Selling/Buying wholesale or retail requires a MO seller's permit.
You can choose to be a(n) :
Saint Charles Business Tax Registration ( Business License) All businesses including home, online or mobile BUSINESS need a BUSINESS license because they are BUSINESSES.