Additional Forms Related to Form 1120
Form 720, Quarterly Federal Excise Tax Return
Use this form and attachments to report liability by IRS No. and pay the excise taxes listed on the form.
Form 1120-W, Estimated Tax for Corporations
Corporations use this worksheet to assist in determining their tax liability and required installment payments.
Form 1120X, Amended U.S. Corporation Income Tax Return
Corporations use this form to amend a previously filed Form 1120 or 1120-A or to make certain elections after the prescribed deadline.
Form 1125-A, Cost of Goods Sold
Filers of Form 1120, 1120-C, 1120-F, 1120S, 1065, or 1065-B complete and attach this form if they report a deduction for cost of goods sold.
Form 1125-E, Compensation of Officers
Certain entities with total receipts of $500,000 or more use this form to provide a detailed report of the deduction for compensation of officers.
Form 2220, Underpayment of Estimated Tax by Corporations
Corporations, tax-exempt organizations subject to the unrelated business income tax, and private foundations use this form to determine whether they are subject to the penalty for underpayment of estimated tax and, if so, the amount of the underpayment penalty for the period that applies.
Form 3800, General Business Credit
File this form to claim any of the general business credits.
Form 4136, Credit for Federal Tax Paid on Fuels
Use this form to claim a credit for certain nontaxable uses (or sales) of fuel during your income tax year, the alternative fuel credit, and a credit for blending a diesel-water fuel emulsion.
Form 4466, Corporation Application for Quick Refund of Overpayment of Estimated Tax
Any corporation that overpaid its estimated tax for the tax year may apply for a quick refund if the overpayment is at least 10% of the expected tax liability and at least $500.
Form 4626, Alternative Minimum Tax—Corporations
Corporations use this form to figure their alternative minimum tax (AMT) under section 55.
Form 7004, Application for Automatic Extension of Time To File Certain Business Income Tax, Information, and Other Returns
Use this form to request an automatic extension of time to file certain business income tax, information, and other returns.
Form 8050, Direct Deposit of Corporate Tax Refund
Corporations file this form to request that the IRS deposit a corporate income tax refund directly into an account at any U.S. bank or other financial institution that accepts direct deposits.
Form 8453-C, U.S. Corporation Income Tax Declaration for an IRS e-file Return
This form is used to authenticate an electronic Form 1120, U.S. Corporation Income Tax Return, authorize an electronic return originator (ERO) or an intermediate service provider (ISP) to transmit via a third party, and authorize a corporation's consent to direct deposit any refund or electronic funds withdrawal for payment of federal taxes owed.
Form 8832, Entity Classification Election
An eligible entity uses this form to elect how it will be classified for federal tax purposes, as a corporation, a partnership, or an entity disregarded as separate from its owner.
Form 8916, Reconciliation of Schedule M-3 Taxable Income with Tax Return Taxable Income for Mixed Groups
Use this form to reconcile Schedule M-3 taxable income to tax return taxable income for a mixed group, which is a consolidated tax group which uses two or more of the following tax return forms: Form 1120, 1120-L, or 1120-PC.
Form 8916-A, Supplemental Attachment to Schedule M-3
Use this form to provide a detailed schedule of the amounts reported on the applicable Schedule M-3 for cost of goods sold, interest income, and interest expense.
Form 8879-C, IRS e-file Signature Authorization for Form 1120
A corporate officer and an electronic return originator (ERO) use this form when the corporate officer wants to use a personal identification number (PIN) to electronically sign a corporation’s electronic income tax return and, if applicable, consent to electronic funds withdrawal.
Form 8941, Credit for Small Employer Health Insurance Premiums
Eligible small employers use this form to figure the credit for small employer health insurance premiums for tax years beginning after 2009. For tax years beginning after 2013, the credit is only available for a 2 consecutive tax year credit period.