Tax season can be stressful enough without worrying about which documents require additional steps, such as notarization. While many IRS forms only need your signature, there are specific situations where the IRS insists on having your signature notarized to prevent fraud and confirm your identity.
Let’s break down when notarization is required for IRS forms and when it isn’t.
Do Most IRS Forms Require a Notary?
No. The majority of IRS tax forms, including your 1040, do not need a notary. Signing under “penalties of perjury” is usually enough for the IRS.
However, certain specialized forms involving power of attorney, identity verification, or third-party representation may require notarization.
IRS Forms That May Require Notarization
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Form 56 – Notice Concerning Fiduciary Relationship
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Used to notify the IRS when someone is acting as a fiduciary (executor, trustee, guardian).
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May require notarization depending on supporting documents.
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Form 2848 – Power of Attorney and Declaration of Representative
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Authorizes another person (such as a tax professional) to act on your behalf.
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Sometimes requires notarization or a declaration under penalty of perjury.
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Form 8821 – Tax Information Authorization
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Grants another person access to your tax information.
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Depending on circumstances, the IRS may request notarization for added security.
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Form W-7 – Application for IRS Individual Taxpayer Identification Number (ITIN)
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Used by individuals who are not eligible for a Social Security Number.
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Supporting identity documents may need to be notarized or certified.
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Form 4506 – Request for Copy of Tax Return
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May require notarization if someone other than the taxpayer is making the request.
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When the IRS Requires Notarization
You’ll likely need a notarized form if:
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You’re authorizing someone else to represent you.
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You’re verifying your identity for an ITIN.
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You’re acting as a fiduciary (executor, trustee, or guardian).
Alternatives to Notarization
In some cases, the IRS allows a substitute statement under penalties of perjury instead of notarization. Always check the instructions for the specific form you’re filing.
Final Thoughts
Not all IRS forms require notarization, but when they do, it’s usually to confirm identity, authority, or representation. Having the right notarization in place ensures the IRS accepts your filing without delays.
At Looking Glass Notary, we help clients prepare and notarize the forms needed during tax season—making the process easier and stress-free.
