What this notice is about Your tax return shows a different name and/or ID number from the information we have for your account. Please provide the requested information. What you need to do Review your identifying information shown on this notice and compare it to your most recent social security card or taxpayer ID card. Complete the CP54 response form to explain the discrepancies. Include copies of documents to substantiate your name and identifying number. You may want to Contact the Social Security Administration (SSA) to update your records if you have an social security number (SSN) and any of the following occurred: you recently married and are using your spouse’s last name and have not already contacted SSA, you legally changed your name without contacting SSA, or your SSN and/or name are different from when you received your social security card. Contact the IRS, ITIN Operation, to update your records if you have an ITIN and any of the following occurred: you recently married and are using your spouse’s last name and did not contact IRS to update your records, you legally changed your name without contacting the IRS to update your records, or your ITIN and/or name are different from when you received your CP565, ITIN Assignment Letter. Frequently asked questions I sent you my information. Now what happens? Once we receive your response form and verify the information you provided, we will update our records accordingly. If you are due a refund and you haven’t heard from us after 6 weeks, you can check the status of your refund on “Where’s My Refund?”. Tips for next year Make sure you file using your name and taxpayer ID number (TIN) that was updated by SSA or IRS. Reference Tools Publication 1, Your Rights as a Taxpayer PDF Publication 1915, Understanding Your IRS Individual Taxpayer Identification Number (ITIN) PDF Full list of tax forms and instructions Need Help? You can authorize someone to contact the IRS on your behalf. See if you qualify for help from a Low Income Taxpayer Clinic. If you can’t find what you need online, call the IRS number at the top of your notice or letter.