Information For...

For you and your family
Standard mileage and other information

Forms and Instructions

Individual Tax Return
Instructions for Form 1040
Request for Taxpayer Identification Number (TIN) and Certification
Request for Transcript of Tax Return


Employee's Withholding Allowance Certificate
Employer's Quarterly Federal Tax Return
Employers engaged in a trade or business who pay compensation
Installment Agreement Request

Popular For Tax Pros

Amend/Fix Return
Apply for Power of Attorney
Apply for an ITIN
Rules Governing Practice before IRS

Understanding Your CP05A Notice

We are examining your return and need documentation to verify the following:

  • Your income
  • The withholding you reported on your income and/or Social Security benefits
  • The tax credits you claimed
  • The household help you claimed
  • Your business income

We are holding your refund pending the results of the examination.

What you need to do

  • Read the notice carefully. It explains the information you must send to us.
  • Provide copies of the documentation we request to verify the items we are auditing.
  • Tear off the voucher on the last page of this notice and attach it to the documents you are submitting.
  • Send the requested information within 30 days from the date of this notice to the address shown on the notice.

You may want to

  • Review this notice with your tax preparer.
  • If you are experiencing economic hardship, believe an IRS system or procedure isn’t working as it should, or are seeking help in resolving tax problems you haven't resolved through normal channels, you may be eligible for Taxpayer Advocate Service (TAS) assistance. You can reach TAS at 877-777-4778 or TTY/TTD 800-829-4059.

Answers to common questions

Why is my return being reviewed?
While we accept most returns as filed, we select some for examination. We examine some federal tax returns to determine if income, expenses, and credits are being reported accurately.
We select returns for examination using various methods that include random sampling, computerized screening, and comparing information we received such as Forms W-2 and 1099. Having your return selected for examination does not suggest you made an error or were dishonest.

What if I did not file a tax return claiming the items you are questioning and someone else is using my name and social security number?
Send us a completed and signed Form 14039, Identity Theft Affidavit (PDF). You can also refer to our identity theft resource page for more information.

Tips for next year

  • Review all of your income and withholding documents for completeness and review your return to make sure you are eligible to claim all income, credits and business income you reported

Printable samples of this notice (PDF)

How to get help