What does an S Corp need to file?
Ava Robinson
Published Apr 06, 2026
If your business has an S-corp tax classification status, you must file form 1120S, which is essentially the annual tax return for your business. Use this form to report deductions, gains, income and losses from the business during the current tax year.
Are S Corp tax returns public?
Federal corporate tax returns are confidential and protected from public disclosure under Section 6103 of the Internal Revenue Code (IRC), as enacted by the Tax Reform Act of 1976 (P.L. 94-455). Public disclosure of corporate tax returns could increase tax compliance.
An S corp. is required to file an annual federal income tax return, using Form 1120S, no later than March 15. The form must report the S corporation’s income, deductions, and credits.
Can a C corporation file as a S corporation?
To get S corporation tax treatment, register your business as a C corporation or limited liability company (LLC). From there, file IRS Form 2553 to elect S corporation taxation. Not all C corporations and LLCs can take advantage of the S corporation tax status.
Where does a corporation have to file taxes?
The following excerpt is from The Corporation Handbook. A corporation generally has to file returns and pay taxes to the federal government, to its state of incorporation, and to those states and localities in which it transacts business.
How are S corporations reported on federal tax returns?
S corporations are corporations that elect to pass corporate income, losses, deductions, and credits through to their shareholders for federal tax purposes. Shareholders of S corporations report the flow-through of income and losses on their personal tax returns and are assessed tax at their individual income tax rates.
Do you have to pay taxes on S Corp income?
S corps don’t pay corporate income taxes, so there is not really an “S corp tax rate.” Instead, the company’s individual shareholders split up the income (or losses) amongst each other and report it on their own personal tax returns.