Form e file 2026

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Form 8879-C is the IRS e-file Signature Authorization for corporations, allowing a corporate officer to electronically sign the corporation's income tax return using a personal identification number (PIN). The form includes sections for tax return information, officer declaration, and responsibilities of both the corporate officer and electronic return originator (ERO). It must be retained by the ERO and not submitted to the IRS unless requested.

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Click ‘Get Form’ to open it in the editor.
Begin by entering the Employer Identification Number (EIN) and the Name of the Corporation at the top of the form.
In Part I, fill in the Tax Return Information. Input whole dollar amounts for Total Income, Taxable Income, Total Tax, Amount Owed, and Overpayment as indicated on Form 1120.
Proceed to Part II where you will declare and authorize your PIN. Ensure you check the appropriate box indicating whether you authorize your ERO to enter your PIN or if you will enter it yourself.
Complete Part III by signing and dating the form. Enter your title as an officer of the corporation.

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Versions	Form popularity	Fillable & printable
2021	4.8 Satisfied (89 Votes)
2020	4.3 Satisfied (228 Votes)
2019	4.3 Satisfied (108 Votes)
2018	4.4 Satisfied (88 Votes)
2017	4.2 Satisfied (34 Votes)
2016	4.4 Satisfied (179 Votes)