S corporations are corporations that elect to pass corporate income, losses, deductions and credit 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. This allows S corporations to avoid double taxation on the corporate income. S corporations are responsible for tax on certain built-in gains and passive income.
To qualify for S corporation status, the corporation must meet the following requirements:
-
Be a domestic corporation
-
Have only allowable shareholders
-
including individuals, certain trust, and estates and
-
may not include partnerships, corporations or non-resident alien shareholders
-
-
Have no more than 100 shareholders
-
Have one class of stock
-
Not be an ineligible corporation i.e. certain financial institutions, insurance companies, and domestic international sales corporations.
In order to become an S corporation, the corporation must submit Form 2553 Election by a Small Business Corporation (PDF) signed by all the shareholders.
Filing Requirements:
If you are an S corporation then you may be liable for… | Use Form… |
---|---|
Income Tax | 1120S (PDF) (Instructions for Form 1120S (PDF)) 1120S Sch. K-1 (PDF) ( Instructions for Form 1120S Sch. K-1 (PDF)) |
Estimated tax | 1120-W (PDF) (corporation only) and 8109 |
Employment taxes:
|
941 (PDF) ( 943 (PDF) for farm employees)940 (PDF) 8109 |
Excise Taxes | Refer to the Excise Tax web page |
Chart 2 – S Corporation Shareholders
If you are an S corporation shareholder then you may be liable for… |
Use Form… |
---|---|
Income Tax | 1040 and Schedule E (PDF) |
Estimated tax | 1040-ES (PDF) |
References/Related Topics
- Compensation and Medical Insurance Issues
- Employees, Shareholders and Corporate Officers
- S Corporation Stock and Debt Basis
- Special Rules for Health Insurance Costs of 2-Percent Shareholder-Employees (IRB 2008-2 Notice 2008-1)
- Other Business Structures