IRS Notice Lists Income You Do Not Recognize: Investigation Checklist
Identify the payer, trace the amount, and explain what your records show.
If an IRS notice lists income you do not recognize, compare the payer, form, tax year, and amount with your records before agreeing to any change. A name you do not recognize could belong to a familiar payer, an incorrect tax form, or someone using your information.
Keep the notice deadline in view. A CP2000 proposes changes; it is not a bill. Follow its response instructions by the stated date, even if you are waiting for a corrected form. If your letter gives you a separate hearing or court deadline, follow those filing instructions separately.
Identify the payer
Look for a legal business name, payroll company, or financial institution you know.
Trace the amount
Compare the notice entry with the source form and your filed return.
Explain the difference
Respond item by item with records and any correction still pending.
1. Investigate the unrecognized income
- Copy the entry from the notice. Record the tax year, payer, form type, amount, and response date. If it is a joint return, check whose income the entry concerns.
- Check names before amounts. Compare old pay statements, brokerage records, client invoices, and tax forms. A payer may report under a legal name you do not see on everyday statements.
- Find the source form. Check your records or request a copy from the payer using independently verified contact information. A wage and income transcript can help identify reported forms, but it may not show every document.
- Check the filed return. Look for the amount within a total on a schedule, as well as on its own line. Compare gross amounts with gross amounts. For example, bank deposits after fees may differ from gross receipts.
- Record what is still unknown. Note whom you contacted, when you asked for records, and whether a correction is pending.
2. Choose your next step based on what you found
The income is yours and was already reported
Show where it appears on the return. If $2,400 is included in $12,600 of gross receipts, point to the return line and attach a breakdown that identifies the $2,400. The reviewer should be able to follow the amount from the notice to the return.
The income is yours but was left off
Check the proposed change, including the amount and how the IRS treated it. Follow the notice instructions for agreeing or disagreeing. For a CP2000, the IRS says you do not need to amend if you agree and have no other income, credits, or expenses to report.
The form is wrong or the income is not yours
Ask the issuer to investigate and correct the form if appropriate. Tell the IRS which item you dispute and why. If you are waiting for a correction, explain what you requested and include records you already have. Keep the notice deadline in view.
You suspect someone used your identity
Follow the IRS instructions for your notice. If the entry is wages from an employer you never worked for, review IRS guidance on employment-related identity theft. For unemployment benefits you did not receive, report the issue to the state agency and ask for a corrected Form 1099-G. Check the applicable guidance before filing Form 14039.
Identify the entry and ask for a specific review
Re: [Notice number] • Tax year [year] • Notice dated [date]
I am responding to the entry for [payer], [form type], and [amount]. I [disagree with this item / agree with part of the proposed change] because [specific reason]. Attachment A, page [number], shows [fact].
I contacted [payer or agency] on [date] to request [a copy or correction]. The request is [pending or resolved]. Please review [specific entry or proposed change] using the enclosed records.
[Name and signature as required]
Enclosures: [Required response form or notice pages], Attachment A: [record], Attachment B: [record, if applicable].
3. Check your response before sending it
- Address each disputed item separately, especially if you agree with part of the notice.
- Include any required response form, signatures, and copies of supporting records.
- Use an authorized submission method. Save the exact reply, proof of submission, and any later corrected form.
Frequently asked questions
Should I wait for the payer to correct the form?
Keep working toward the notice deadline. If the correction has not arrived, explain the dispute and what is pending. Ask the office listed on the notice how to provide the correction when you get it.
Does an unfamiliar payer name prove identity theft?
No. First confirm the payer and source form. A familiar employer or client may use a different legal name. If the records still point to income you did not earn or receive, follow the guidance for the type of suspected misuse.
Should I amend as soon as I get the notice?
First identify what is wrong. If you dispute a CP2000 entry, use the notice’s response instructions. An amended return is not a substitute for explaining your disagreement to the office handling the notice.
Resolve the entry before accepting the adjustment
Identify the payer, trace the amount, and give the IRS a clear explanation supported by records.
