Do I need a paid‑preparer to use Form 8879‑Corp?

No. The form can be completed by any authorized corporate officer. If a paid preparer is used, they must also sign the form.

Can I submit Form 8879‑Corp directly to the IRS?

Form 8879‑Corp is attached to the electronic return through your tax software. The IRS does not accept it as a standalone filing.

What if I make a mistake after signing?

Correct the error in the PDF filler, re‑sign, and download a new copy. The previous version should be discarded.

Is an electronic signature legally valid for Form 8879‑Corp?

Yes. The IRS accepts electronic signatures on Form 8879‑Corp when the signature is created using a compliant e‑signature tool such as Formize.

Do I need to print the form after filling it out?

Printing is optional. Keep the signed PDF for your records and attach it to the e‑file. Some corporations retain a printed copy for internal archives.

How long is the Form 8879‑Corp valid?

The form is valid for the tax year shown on the document. A new Form 8879‑Corp is required for each filing year.

Can I use Form 8879‑Corp for an amended return?

Yes, but you must use the version of the form that matches the tax year of the amended return.

What if my corporation has multiple authorized signers?

Only one authorized officer needs to sign the Form 8879‑Corp. Additional signatures are not required.

IRS Form 8879‑Corp – Fillable PDF Signature Authorization

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IRS Form 8879‑Corp – Fillable PDF Signature Authorization

Form 8879‑Corp is the IRS e‑file signature authorization used by corporations, S corporations, and certain other entities to sign their income tax return (Form 1120, 1120‑S, etc.). Instead of printing, signing, and mailing a paper copy, you can now complete the form instantly with Formize’s fillable PDF tool.

What Is Form 8879‑Corp?

This two‑page PDF authorizes the IRS to accept an electronic signature for the corporate tax return. It must be signed by an authorized officer (usually the president, CEO, or a partner) and the paid‑preparer, if applicable.

How to Fill Out Form 8879‑Corp Online

Follow the simple steps below – no PDF editor required. Just click the button on this page and let the Formize PDF Filler load.

Common Mistakes to Avoid

Leaving the "Date Signed" field blank. The IRS rejects unsigned forms.
Using the wrong tax year. Verify the year at the top of the form.
Signing with a handwritten signature image. Use the built‑in electronic signature feature.
Incorrect EIN. Double‑check the employer identification number.

Where to Submit the Completed Form

After you finish, download the signed PDF and attach it to your e‑file submission through your tax software or send it to your paid‑preparer. The IRS does not accept a separate mailed copy unless you are filing a paper return.

Need help? Review the official IRS instructions for Form 8879‑Corp.

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FAQ

Do I need a paid‑preparer to use Form 8879‑Corp?
No. The form can be completed by any authorized corporate officer. If a paid preparer is used, they must also sign the form.
Can I submit Form 8879‑Corp directly to the IRS?
Form 8879‑Corp is attached to the electronic return through your tax software. The IRS does not accept it as a standalone filing.
What if I make a mistake after signing?
Correct the error in the PDF filler, re‑sign, and download a new copy. The previous version should be discarded.
Is an electronic signature legally valid for Form 8879‑Corp?
Yes. The IRS accepts electronic signatures on Form 8879‑Corp when the signature is created using a compliant e‑signature tool such as Formize.
Do I need to print the form after filling it out?
Printing is optional. Keep the signed PDF for your records and attach it to the e‑file. Some corporations retain a printed copy for internal archives.
How long is the Form 8879‑Corp valid?
The form is valid for the tax year shown on the document. A new Form 8879‑Corp is required for each filing year.
Can I use Form 8879‑Corp for an amended return?
Yes, but you must use the version of the form that matches the tax year of the amended return.
What if my corporation has multiple authorized signers?
Only one authorized officer needs to sign the Form 8879‑Corp. Additional signatures are not required.

HOW TO

How to fill out Form 8879-C for free, online in 5 easy steps:

1
Click the Fill‑Out Button
Press the "Fill out this form" button on the page. The Formize PDF Filler app will open in a new tab.
2
Wait for the Filler to Load
A short loading screen appears while the fillable PDF is prepared. No downloads are required.
3
Complete All Required Fields
Enter the corporation’s name, EIN, tax year, and authorized officer’s information. Use the on‑screen signature tool to sign.
4
Review for Accuracy
Double‑check dates, numbers, and signatures. The filler highlights any missing required fields.
5
Save or Export the Signed PDF
When finished, click "Save" to download the signed PDF. Attach it to your e‑file submission or give it to your tax preparer.

ABOUT

Tax forms

Form 8879-C is one of Tax forms that are documents used to report information about an individual's or business's income, deductions, and tax liability to the relevant tax authority. These forms are necessary to comply with tax laws and fulfill tax obligations. Tax forms vary depending on the country and the specific tax requirements in place. Here are some common types of tax forms:

Individual Tax Forms: These forms are used by individual taxpayers to report their personal income and claim deductions, credits, and exemptions. Examples include the 1040 form in the United States or the Self-Assessment Tax Return form in the United Kingdom.

Business Tax Forms: Business tax forms are used by companies, partnerships, or self-employed individuals to report their business income, expenses, and other tax-related information. Examples include the Schedule C form (Profit or Loss from Business) in the United States or the CT600 form (Company Tax Return) in the United Kingdom.

Payroll Tax Forms: These forms are used by employers to report the wages, salaries, and taxes withheld from their employees' paychecks. Examples include the W-2 form in the United States or the P60 form in the United Kingdom.

Sales Tax Forms: Sales tax forms are used by businesses to report and remit sales tax collected on taxable goods or services. The specific sales tax forms vary by jurisdiction.

Value Added Tax (VAT) Forms: VAT forms are used in countries that impose a value-added tax to report and remit VAT collected on sales and claim VAT credits for purchases. Examples include the VAT return forms used in many countries.

Estimated Tax Forms: Estimated tax forms are used to report and pay estimated taxes on income that is not subject to withholding, such as self-employment income or investment income.

These are just a few examples of the numerous tax forms that may exist. The specific forms required depend on the tax laws and regulations in your country or jurisdiction. It is important to consult the tax authority's guidelines or seek professional advice to determine which forms are applicable to your situation.

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