Preserve the copy the officer reviewed
When a corporate return changes after an officer signs the electronic filing authorization, retain the original reviewed return and signed form. Ask the electronic return originator to identify the current transmission status. The next action differs depending on whether the return is still awaiting release or has already been accepted.
Form 8879-CORP supports specified corporate electronic signatures and, where applicable, electronic funds withdrawal consent. Its instructions require the officer to verify the return's accuracy and the originator to obtain the signed authorization before transmission. A signed form should remain connected to the actual return information the officer reviewed.
This workflow concerns corporate authorizations. Partnerships and other filers use their applicable signature procedures. Do not reuse a corporate form or assume its requirements apply to every entity simply because the same preparer handles all company returns.
References: IRS Form 8879-CORP and instructions
Request a focused comparison of the changes
Have the preparer identify changed amounts, elections, disclosures and payment instructions. Ask what caused each change, such as a corrected trial balance or a final depreciation decision. A new PDF with the same filename makes it difficult for the signer to see what they are being asked to approve.
Compare the summary amounts on the authorization with the revised return. Review related schedules when the change affects more than one line. A change in taxable income may also affect estimated-tax treatment, state returns or carryforwards that are not visible on the signature page.
For a hypothetical revised deduction that reduces taxable income by $8,000, record the source and the preparer's explanation. That amount alone does not determine the final tax change or whether an additional authorization is required. The originator must apply the current signature and e-file procedures to the complete revision.
References: IRS Form 8879-CORP and instructions; IRS Publication 4163: Business e-file providers, processing year 2026
Verify the filed version and preserve any post-filing issue
After transmission, obtain the final submitted return and acceptance acknowledgment. Compare them with the approved revision, including relevant payment instructions. Save the earlier version as superseded rather than deleting it, because it explains why the authorization process was repeated.
If the return had already been accepted before the change was identified, ask the preparer about the applicable correction or amendment process. Signing a new authorization does not itself replace an accepted return. Keep the filing status explicit so no one mistakes a revised draft for a completed amendment.
Update the document handoff so later bookkeeping changes are flagged before transmission. Identify who can release the return and who confirms that the signer has approved the current version. The final file should show one clear chain from reviewed facts to authorization to the accepted submission.
References: IRS Publication 4163: Business e-file providers, processing year 2026
Sources
Requirements and product details can change. Check the linked guidance for the facts that apply to your situation.
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General information, not personalized accounting, tax, legal, or investment advice. Have the appropriate qualified professional review decisions that depend on your circumstances.