IRS Form 1120A was the short version of Form 1120, the tax return for corporations. The federal form has been discontinued, but some states continue to use a similar form.
Filing Corporate Tax Returns
Unless a domestic corporation is exempt under tax code section 501, it must file an annual income tax return. Being in bankruptcy or having no taxable income does not exempt a corporation from filing. A corporation may file Form 1120 or may be required to file any of a number of special 1120 forms, depending on the corporate structure and business type.
Form 1120A was discontinued after the 2006 tax year; corporations that were eligible to file that form now must file Form 1120.
Only corporations meeting 10 requirements could file Form 1120A. Some of the requirements were regarding gross receipts, total income, and total assets--each had to equal less than $500,000. Dividend income could come only from certain types of dividends and the corporation could not owe the alternative minimum tax.
As with Form 1120, to fill out Form 1120A a corporation needed information about all of its assets, income, expenses, and applicable deductions.
Other 1120A Forms
Many state tax agencies continue to offer smaller corporations the option to file state income tax forms, analogously called 1120A.