For small business owners,
S corporations can be an extremely useful way to legally incorporate your business, especially if your goal is to have a lot of shareholders but not more than 100. Every legal business entity has specific tax requirements the IRS makes.
Like C Corps, the IRS requires S Corps to file a version of the 1120 tax form called the
1120-S. It helps S corps figure out how to report their income, gains and losses, as well as tax deductions and tax credits. One big advantage of incorporating as an S Corp is limited liability protection for shareholders.