I am a full-time, salaried employee with fairly considerable tax withholdings. I also have an extremely small side business with a federal EIN. The money that I earn through my business is 100% received through a contract with a W9 reported at the end of the year. If I report 100% of that W9 and my EIN in my personal tax filing, do I still need to file a separate business tax report? Also, do I need to file the business tax quarterly, since it’s based on commissions? Or because the business income is so extremely small is it OK to file annually along with my regular income that has already been withheld for the IRS?
