Wages
Employer statements or payroll records may be needed when reported wages do not match IRS information.
IRS Letter 4800C • Proposed Return Changes
Received IRS Letter 4800C?
Letter 4800C says the IRS proposes to change your return, tax credits, or both because information reported on the return does not match IRS records or could not be verified.
Return the completed Response Form within 30 days from the letter date. Include the records requested for each disputed item.
There is no fee to book the call. No documents are required when booking. Have every page of Letter 4800C, its enclosures, and the filed return available during your call.
Sonya D. Bright, EABaytown-BasedVirtual Nationwide Service
What Letter 4800C Means
The IRS is proposing changes before finishing the return
The IRS may be trying to verify wages, income tax withholding, refundable credits, education credits, Marketplace information, or business expenses.
Review the “Changes to Your Return” section and compare every proposed adjustment with the filed return and supporting records.
Items The IRS May Question
Match records to the exact proposed change
Income tax withholding
Pay statements or employer verification may support federal withholding claimed on the return.
Premium Tax Credit
Form 1095-A, Marketplace records, and household information may be required.
Education credit
Enrollment, tuition, payment, and Form 1098-T records may be requested.
Refundable credits
Eligibility records must address the specific credit and person identified in the letter.
Business expenses
Books, receipts, bank records, and business-purpose explanations may be needed for questioned Schedule C items.
Response Choices
Complete the Response Form and support your position
If you agree
Check the agreement box, sign and date the Response Form, and return it using the letter instructions.
If you disagree
Check the disagreement box, sign and date the form, and attach readable records supporting each disputed item.
Keep proof
Retain the complete response and the upload confirmation, fax report, or mailing proof.
Records To Review
Have these available for the call
- Every page and enclosure from Letter 4800C
- The filed return and schedules
- W-2s, 1099s, and pay statements
- Credit eligibility records
- Marketplace or education records, if listed
- Business books and receipts, if listed
Response Quality
Make the proposed changes easy to review
Label each document
Organize the response by proposed adjustment and state what fact each record proves.
Send a complete package
Include the signed Response Form and all requested records together unless the letter directs otherwise.
Frequently Asked Questions
IRS Letter 4800C questions
Is Letter 4800C a bill?
No. It proposes changes to the return, credits, refund, or credit applied to estimated tax.
Can I respond online?
Yes, when the letter provides access to the IRS Documentation Upload Tool. Keep the confirmation.
What if I agree?
Complete, sign, date, and return the Response Form within the 30-day period.
What if I disagree?
Return the signed form with readable records supporting each item you dispute.
Is there a fee to book?
No. There is no fee to book the call. Professional work requires a separate written engagement.
Can TaxDecoders help?
Assistance may be offered after the letter, return, proposed changes, supporting records, and deadline are reviewed.
Verified Resources
Official information
This page was reviewed on July 28, 2026. Always follow the dates and instructions printed on your actual letter.
Understanding Letter 4800C
Taxpayer Advocate roadmap
Taxpayer rights
Respond to Letter 4800C within 30 days.
Book a call with TaxDecoders. Have the complete letter, filed return, proposed changes, and available supporting records ready during the call.
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