IRS Letter List

Notice Number Description Topic
CP01H You received a CP 01H notice because we were unable to process your tax return. The IRS has locked your account because the Social Security Administration informed us that the Social Security number (SSN) of the primary or secondary taxpayer on the return belongs to someone who was deceased prior to the current tax year (before January 1, 2010 for a 2010 tax return).  
CP02H You owe a balance due as a result of amending your tax return to show receipt of a grant received as a result of Hurricane Katrina, Rita or Wilma. Balance Due
CP03C You received a tax credit (called the First-Time Homebuyer Credit) for a house you purchased. You may need to file a form to report a change in ownership to the house you purchased.  
CP04 Our records show that you or your spouse served in a combat zone, a qualified contingency operation, or a hazardous duty station during the tax year specified on your notice. As a result, you may be eligible for tax deferment.  
CP08 You may qualify for the Additional Child Tax Credit and be entitled to some additional money. Additional Child Tax Credit
CP10 We made a change(s) to your return because we believe there’s a miscalculation. This change(s) affected the estimated tax payment you wanted applied to your taxes for next year. Change To Your Estimated Tax Credit Amount
CP10A We made a change(s) to your return because we believe there’s a miscalculation involving your Earned Income Credit. This change(s) affected the estimated tax payment you wanted applied to your taxes for next year. Change To Your Estimated Tax Credit Amount
CP11 We made changes to your return because we believe there’s a miscalculation. You owe money on your taxes as a result of these changes. Balance Due
CP11A We made changes to your return because we believe there’s a miscalculation involving your Earned Income Credit. You owe money on your taxes as a result of these changes. Balance Due
CP11M We made changes to your return involving the Making Work Pay and Government Retiree Credit. You owe money on your taxes as a result of these changes. Balance Due
CP12 We made changes to correct a miscalculation on your return.  
CP12A We made changes to correct the Earned Income Credit (EIC) claimed on your tax return.  
CP12E We made changes to correct a miscalculation on your return.  
CP12M We made changes to the computation of the Making Work Pay and/or Government Retiree Credits on your return.  
CP12R We made changes to the computation of the Rebate Recovery Credit on your return.  
CP13 We made changes to your return because we believe there’s a miscalculation. You’re not due a refund nor do you owe an additional amount because of our changes. Your account balance is zero.  
CP13A We made changes to your return because we found an error involving your Earned Income Credit. You’re not due a refund nor do you owe an additional amount because of our changes. Your account balance is zero.  
CP13M We made changes to your return involving the Making Work Pay credit or the Government Retiree Credit. You’re not due a refund nor do you owe an additional amount because of our changes. Your account balance is zero.  
CP13R We made changes to your return involving the Recovery Rebate Credit. You’re not due a refund nor do you owe an additional amount because of our changes. Your account balance is zero.  
CP14 We sent you this notice because you owe money on unpaid taxes.  
CP14I You owe taxes and penalties because you didn’t take out the minimum amount you had to from your traditional individual retirement arrangement (IRA). Or, you put into a tax-sheltered account more than you can legally.  
CP16 We sent you this notice to tell you about changes we made to your return that affect your refund. We made these changes because we believe there was a miscalculation. Our records show you owe other tax debts and we applied all or part of your refund to them.  
CP21A We made the change(s) you requested to your tax return for the tax year specified on the notice. You owe money on your taxes as a result of the change(s). Balance Due
CP21B We made the change(s) you requested to your tax return for the tax year specified on the notice. You should receive your refund within 2-3 weeks of your notice. Refund
CP21C We made the change(s) you requested to your tax return for the tax year specified on the notice. You’re not due a refund nor do you owe any additional amount. Your account balance for this tax form and tax year is zero. Even Balance
CP21E As a result of your recent audit, we made changes to your tax return for the tax year specified on the notice. You owe money on your taxes as a result of these changes. Balance Due
CP21I We made changes to your tax return for the tax year specified on the notice for Individual Retirement Arrangement (IRA) taxes. You owe money on your taxes as a result of these changes. Balance Due
CP22A We made the change(s) you requested to your tax return for the tax year specified on the notice. You owe money on your taxes as a result of the change(s). Balance Due
CP22E As a result of your recent audit, we made changes to your tax return for the tax year specified on the notice. You owe money on your taxes as a result of these changes. Balance Due
CP22I We made changes to your tax return for the tax year specified on the notice for Individual Retirement Arrangement (IRA) taxes. You owe money on your taxes as a result of these changes. Balance Due
CP23 We made changes to your return because we found a difference between the amount of estimated tax payments on your tax return and the amount we posted to your account. You have a balance due because of these changes.  
CP24 We made changes to your return because we found a difference between the amount of estimated tax payments on your tax return and the amount we posted to your account. You have a potential overpayment credit because of these changes.  
CP24E We made changes to your return because we found a difference between the amount of estimated tax payments on your tax return and the amount we posted to your account. You have a potential overpayment credit because of these changes.  
CP25 We made changes to your return because we found a difference between the amount of estimated tax payments on your tax return and the amount we posted to your account. You’re not due a refund nor do you owe an additional amount because of our changes. Your account balance is zero.  
CP31 Your refund check was returned to us, so you need to update your address. Refund
CP39 We used a refund from your spouse or former spouse to pay your past due tax debt. You may still owe money.  
CP42 The amount of your refund has changed because we used it to pay your spouse’s past due tax debt.  
CP45 We were unable to apply your overpayment to your estimated tax as you requested. Overpayment
CP49 We sent you this notice to tell you we used all or part of your refund to pay a tax debt. Overpayment
CP53 We can’t provide your refund through direct deposit, so we’re sending you a refund check by mail. Direct Deposits
CP59 We sent you this notice because we have no record that you filed your prior personal tax return or returns.  
CP71 You received this notice to remind you of the amount you owe in tax, penalty and interest.  
CP71A You received this notice to remind you of the amount you owe in tax, penalty and interest.  
CP71C You received this notice to remind you of the amount you owe in tax, penalty and interest.  
CP71D You received this notice to remind you of the amount you owe in tax, penalty and interest.  
CP90C We levied you for unpaid taxes. You have the right to a Collection Due Process hearing.  
CP120 You need to send us documentation of your tax-exempt status. Tax Exemptions
CP120A Your organization’s tax-exempt status has been revoked for failure to file a Form 990 series return for three consecutive years. In addition, you are no longer eligible to sponsor a tax-sheltered annuity plan (Internal Revenue Code section 403(b) retirement plan).  
CP130 Your tax return filing requirements may have changed: You may no longer need to pay the Alternative Minimum Tax. Filing Requirements
CP152 We have received your return. Confirmation of Return Receipt
CP153 We can’t provide you with your refund through a direct deposit, so we’re sending you a refund check/credit payment by mail. Refund
CP166 We were unable to process your monthly payment because there were insufficient funds in your bank account. Payment Process
CP178 Your tax return filing requirements may have changed: You may no longer owe excise tax. Filing Requirements
CP231 Your refund or credit payment was returned to us and we need you to update your current address. Address Update Needed
CP259 We’ve sent you this notice because our records indicate you didn’t file the required business tax return identified in the notice.  
CP259A We sent you this notice because our records indicate you did not file a required Form 990/990-EZ, Return of Organization Exempt From Income Tax.  
CP259B We sent you this notice because our records indicate you didn’t file a required Form 990-PF, Return of Private Foundation or Section 4947(a)(1) Nonexempt Charitable Trust Treated as a Private Foundation.  
CP259C We sent you this notice because our records indicate you are presumed to be a private foundation and you didn’t file a required Form 990-PF, Return of Private Foundation or Section 4947(a)(1) Nonexempt Charitable Trust Treated as a Private Foundation.  
CP259D We sent you this notice because our records indicate you did not file a required Form 990-T, Exempt Organization Business Income Tax Return.  
CP259E We sent you this notice because our records indicate you did not file a required Form 990-N, e-Postcard.  
CP259F We’re sending you this notice because our records indicate you did not file a required Form 5227, Split-Interest Trust information Return.  
CP259G We sent you this notice because our records indicate you did not file a required Form 1120-POL, U.S. Income Tax Return for Certain Political Organizations.  
CP259H We sent you this notice because our records indicate you are a tax-exempt political organization and you did not file a required Form 990/990-EZ, Return of Organization Exempt From Income Tax.  
CP276A We didn’t receive a correctly completed tax liability schedule. We normally charge a Federal Tax Deposit (FTD) penalty when this happens. We decided not to do so this time. FTD Penalty
CP276B We didn’t receive the correct amount of tax deposits. We normally charge a Federal Tax Deposit penalty when this happens. We decided not to do so this time. FTD Penalty
CP297C We levied you for unpaid taxes. You have the right to a Collection Due Process hearing.  
CP501 You have a balance due (money you owe the IRS) on one of your tax accounts.  
CP503 We have not heard from you and you still have an unpaid balance on one of your tax accounts.  
CP504 You have an unpaid amount due on your account. If you do not pay the amount due immediately, the IRS will seize (levy) your state income tax refund and apply it to pay the amount you owe.  
CP504B You have an unpaid amount due on your account. If you do not pay the amount due immediately, the IRS will seize (levy) certain property or rights to property and apply it to pay the amount you owe.  
CP521 This notice is to remind you that you have an installment agreement payment due. Please send your payment immediately.  
CP523 This notice informs you of our intent to terminate your installment agreement and seize (levy) your assets. You have defaulted on your agreement.  
CP565 We gave you an Individual Taxpayer Identification Number (ITIN).  
CP565 (SP) Nosotros le asignamos un Número de Identificación Personal del Contribuyente (ITIN, por sus siglas en inglés).  
CP566 We need more information to process your application for an Individual Taxpayer Identification Number (ITIN). You may have sent us an incomplete form. You may have sent us the wrong documents.  
CP566 (SP) Necesitamos más información para poder tramitar su solicitud para un Número de Identificación Personal del Contribuyente (ITIN, por sus siglas en inglés). Usted quizá nos envió un formulario incompleto. O, quizá nos envió los documentos incorrectos.  
CP567 We rejected your application for an Individual Taxpayer Identification Number (ITIN). You may not be eligible for an ITIN. Your documents may be invalid. We may not have received a reply when we asked for more information.

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