Since January 1, 2018, the nominal federal corporate tax rate in the United States of America is a flat 21% following the passage of the Tax Cuts and Jobs Act of 2017. State and local taxes and rules vary by jurisdiction, though many are based on federal concepts and definitions.
A C corporation is a business structure that allows the owners of a business to become legally separate from the business itself. This allows a company to issue shares and pass on profits while limiting the liability of the shareholders and directors.
Form 1120 is similar to Schedule C, as you calculate your business income the same way. However, this form is often more complicated because it requires more details than Schedule C, and you must file it separately from your personal income tax return.
Use Form 1120-C to report income, gains, losses, deductions, and credits, and to figure the income tax liability of the cooperative.