IRS Form 8878 e-file Signature Authorization
Form 8878 is an IRS e-file signature authorization used for tax extension applications. It allows taxpayers to authorize electronic return originators (EROs) to file Form 4868 or Form 2350 on their behalf. This form ensures that all information is accurate and that payments are processed properly.
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How do I fill this out?
Filling out Form 8878 is straightforward. First, gather all necessary documentation related to your tax extension. Then, follow the simple instructions step-by-step to ensure accurate completion.

How to fill out the IRS Form 8878 e-file Signature Authorization?
1
Gather your personal information including names and social security numbers.
2
Complete Part I with details from your extension application.
3
Authorize your ERO to enter your PIN if applicable.
4
Review the form for accuracy before submission.
5
Sign and return the form to your ERO for processing.
Who needs the IRS Form 8878 e-file Signature Authorization?
1
Individual taxpayers filing for an extension.
2
Self-employed individuals needing additional time for filing.
3
Married couples filing jointly seeking to extend their tax deadline.
4
Tax professionals filing on behalf of their clients.
5
Anyone who failed to meet the tax filing deadline and requires an extension.
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What are the instructions for submitting this form?
To submit Form 8878, first ensure all relevant sections are completed and signed. Submit the form to your ERO via hand delivery, fax, or email as agreed upon. Do not send Form 8878 directly to the IRS unless specifically requested, as it must remain with your ERO for processing.
What are the important dates for this form in 2024 and 2025?
In 2024, the deadline for filing Form 4868 is April 15. For 2025, the deadline remains the same. Ensure timely submission to avoid penalties.

What is the purpose of this form?
Form 8878 serves as a crucial authorization for taxpayers allowing electronic return originators to file tax extension requests on their behalf. It provides necessary consent for the handling of sensitive information, including PINs. Properly completing this form ensures compliance with IRS regulations and facilitates a smoother e-filing process.

Tell me about this form and its components and fields line-by-line.

- 1. Taxpayer's Name: The full legal name of the taxpayer.
- 2. Social Security Number: The taxpayer's social security number.
- 3. Spouse's Name: The full legal name of the taxpayer's spouse.
- 4. Spouse's Social Security Number: The spouse's social security number.
- 5. PIN: Personal identification number authorizing e-filing.
What happens if I fail to submit this form?
Failure to submit Form 8878 can result in the automatic denial of your extension, leading to penalties and interest on late-filed returns.
- Penalties: Late payments and filings may incur financial penalties.
- Rejected Extensions: Your extension request may be rejected, forcing you to file your return immediately.
- Impact on Refunds: Delays in submitting forms can affect the timing of your tax refunds.
How do I know when to use this form?

- 1. Filing an Extension: When you need extra time to file your individual income tax returns.
- 2. Authorizing ERO: If you are using a professional tax preparer to file your extension.
- 3. PIN Generation: To allow the ERO to enter your PIN for e-filing.
Frequently Asked Questions
What is Form 8878?
Form 8878 is the IRS e-file signature authorization for tax extension applications.
Who needs to fill out Form 8878?
Taxpayers seeking to authorize their ERO to file an extension on their behalf need to complete this form.
Can I edit Form 8878?
Yes, you can edit the PDF version of Form 8878 using PrintFriendly's PDF editor.
How do I submit Form 8878?
You must return the completed Form 8878 to your ERO; do not send it to the IRS unless instructed.
What happens if I don't submit Form 8878?
Failure to submit the form may result in delays or denial of your tax extension.
Can I sign Form 8878 digitally?
Yes, PrintFriendly allows you to sign Form 8878 electronically.
How do I access Form 8878?
You can download Form 8878 directly from the IRS website or our site for editing.
Is there a fee to use PrintFriendly for editing?
No, using PrintFriendly for editing PDFs is free of charge.
Is Form 8878 mandatory?
Yes, if you're using an ERO to file your extension, this form is mandatory.
When should I submit Form 8878?
You should submit Form 8878 before the tax deadline to ensure your extension is filed on time.
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