IRS · Tax

Fill Form 8879 Online Free

IRS e-file Signature Authorization

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What Is Form 8879?

Form 8879 authorizes a tax preparer to electronically file your federal income tax return using a personal identification number (PIN) as your electronic signature. This form is not sent to the IRS — it is kept on file between you and your tax preparer as proof you authorized the e-filing.

Agency
IRS
Category
Tax
Form Number
Form 8879
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Who Needs Form 8879?

Taxpayers who use a professional tax preparer or CPA to e-file their return
Anyone authorizing a paid preparer to submit Form 1040 electronically
Tax preparers who need signed authorization before transmitting returns

How to Fill Out Form 8879 — Step by Step

1

Part I: Review the AGI and total tax from your return, which the preparer will have entered.

2

Verify that the amounts shown match the return you reviewed.

3

Part II: Enter a self-selected 5-digit PIN (any five numbers except all zeros) as your electronic signature.

4

If filing jointly, your spouse must also enter their own 5-digit PIN.

5

Sign and date the form.

6

Part III is completed by the Electronic Return Originator (ERO) / tax preparer.

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Common Mistakes to Avoid

Signing the form before reviewing your actual return — you are responsible for everything on the return
Choosing all zeros as your PIN (00000 is not allowed)
The preparer transmitting the return before obtaining your signed Form 8879
Not keeping a copy for your records — the preparer must retain it for 3 years
Signing the wrong year's Form 8879 when amended or prior-year returns are involved

Frequently Asked Questions

Do I send Form 8879 to the IRS?

No. Form 8879 stays between you and your tax preparer. It is not submitted to the IRS. The preparer must keep it for at least 3 years.

Can I sign Form 8879 electronically?

Yes. The IRS allows electronic signatures on Form 8879 using various methods including typed names, digital signatures, and scanned handwritten signatures.

What if I find an error after signing Form 8879?

Contact your tax preparer immediately. If the return has not yet been transmitted, they can correct it and have you sign a new Form 8879. If already filed, you will need to file an amended return.

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