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CP21B Notice: How to Address IRS Refund Changes

Silas Bamigbola avatar image
Last updated 10/29/2024 by
Silas Bamigbola
Fact checked by
Ante Mazalin
Summary:
The IRS sends out the CP21B Notice when it adjusts a taxpayer’s return and determines that a refund is due. This typically happens after you’ve requested a change to your original tax filing, either through an amended return or by directly contacting the IRS. The notice provides details of the adjustment and the expected refund timeline. Responding promptly and understanding the notice can help ensure smooth processing of your refund and prevent any delays.
Did you recently receive a CP21B Notice from the IRS stating that changes were made to your tax return and that a refund is due? Don’t worry. This notice typically means good news: the IRS has made adjustments based on your request, and you can expect a refund soon. However, it’s important to understand the details, review the changes, and ensure everything is accurate. Taking the right steps will help avoid any unnecessary delays or complications with your refund. Here’s what you need to know about responding to the CP21B Notice.

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What is a CP21B notice?

The CP21B Notice is an official letter sent by the IRS to inform taxpayers that adjustments have been made to their tax return, and as a result, a refund is due. The changes are typically based on a request you made to amend errors in your tax filing, such as a miscalculation or an omission of income or deductions. In response to these changes, the IRS issues a CP21B Notice, confirming the adjustment and providing an estimated timeline for your refund, typically within 2-3 weeks.

Why the IRS sends a CP21B notice

There are several reasons why you might receive a CP21B Notice:
  • Amendments to your tax return: If you file an amended return (Form 1040X) after realizing you made an error in your original submission, the IRS processes your request and sends a CP21B Notice if the corrections result in a refund.
  • IRS corrections: Sometimes, the IRS makes adjustments to your return based on discrepancies or errors they identify. If these changes result in a refund, they will notify you via the CP21B Notice.
  • Requested changes: If you’ve directly contacted the IRS to request changes—perhaps after discovering incorrect information on your return—this notice confirms the IRS’s acceptance of your request and details the refund process.

Pro Tip

Keep a detailed record of all IRS correspondence, including copies of any notices and letters. This will make it easier to track changes and respond if issues arise in the future.
Struggling with IRS notices? If you’ve received an IRS letter and aren’t sure how to handle it, you might want to explore professional tax relief options. Optima Tax Relief has helped thousands of people resolve their tax issues and get back on track with the IRS. Learn more about how they can assist you with your situation.

How to respond to a CP21B notice

Upon receiving a CP21B Notice, it’s important to read it carefully and ensure you understand the changes made to your tax return. Here’s what you should do next:

Steps to take when responding to a CP21B notice

  1. Review the changes: The CP21B Notice will outline what has been modified on your tax return. Compare these changes to your records to confirm their accuracy.
  2. Check for refunds: The notice will specify the amount of refund due. The IRS usually issues the refund within 2-3 weeks of sending the notice. If you have outstanding debts, like unpaid taxes or child support, your refund might be applied to those first.

Agreeing with the IRS changes

If the changes listed in the CP21B Notice align with your expectations and records, no further action is required from you. Simply wait for your refund to arrive. However, ensure you monitor your account, as delays can occur if the IRS needs more time to process your refund or if additional issues arise.

Disagreeing with the IRS changes

If you find discrepancies between your records and the changes detailed in the notice, you should contact the IRS immediately. Use the contact information provided on the top right corner of the notice. You can call or send a written explanation to the IRS to dispute the changes. Always include the notice and any supporting documentation to help the IRS review your case more efficiently. Make sure to send your response within 30 days of receiving the CP21B Notice to avoid delays or penalties.

Pro Tip

If you have questions about the changes made to your return, consider scheduling an appointment with a certified tax professional to review your situation and ensure everything is accurate.

What if you don’t receive your refund?

The IRS typically sends your refund within 2-3 weeks of the notice, but delays can happen. If you haven’t received your refund after 3 weeks, it’s important to take the following steps:
  • First, ensure you don’t have any outstanding debts (such as back taxes or child support) that could have absorbed your refund.
  • If no issues arise, call the IRS using the toll-free number listed on your CP21B Notice.
  • You may also want to check your refund status online through the IRS’s “Where’s My Refund?” tool.

What should you do if you disagree with the CP21B notice?

If you disagree with the changes, it’s crucial to act quickly. Here’s how to respond:
  • Contact the IRS: Call the number provided on your notice and discuss the changes with a representative. Have your tax return, the notice, and any relevant documents on hand for reference.
  • Write a letter: You can also send a letter to the IRS, including your Social Security number, tax year, the form number (1040), and a clear explanation of why you disagree with the changes. Attach any supporting documentation.
  • File an amended return: If you discover an additional error on your return, you may need to file a Form 1040X to correct it.

Pro Tip

When contacting the IRS, always have a copy of your tax return, the CP21B Notice, and any supporting documents readily available to streamline your conversation and reduce processing delays.

How to prevent delays in receiving your refund

Delays in receiving your refund can occur if you don’t respond to the CP21B Notice promptly or if there are discrepancies between your records and the IRS changes. Here are some tips to avoid delays:
  • Respond quickly: If you need to take action based on the notice, respond as soon as possible to avoid complications.
  • Provide accurate information: Ensure that all details you provide to the IRS, whether over the phone or in writing, are accurate and supported by documentation.
  • Keep copies of your records: Always retain a copy of the notice and any correspondence with the IRS for future reference.
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Frequently asked questions

What should I do if I lost my CP21B notice?

If you’ve lost your CP21B Notice, don’t worry. You can still contact the IRS by calling their toll-free number (800-829-1040) and provide them with your Social Security number, tax year in question, and any relevant details. Additionally, you can check your tax account online through the IRS portal to view any recent notices and updates regarding your refund or return changes.

Will the CP21B notice affect my future tax returns?

The CP21B Notice itself does not directly affect your future tax filings. However, if the IRS has made adjustments that change your filing status, deductions, or income in any way, you’ll need to ensure that future returns reflect these corrections. It’s important to update your tax records and keep a copy of the notice for reference when preparing future tax returns.

Can I receive my refund faster after getting a CP21B notice?

The IRS generally issues refunds within 2-3 weeks after sending a CP21B Notice, but unfortunately, there isn’t much you can do to speed up the process. However, ensuring that your mailing address and banking information on file with the IRS are correct can prevent further delays. If you’ve signed up for direct deposit, your refund may be processed slightly faster than a mailed check.

What if I didn’t request changes to my return?

If you received a CP21B Notice but don’t recall requesting any changes to your return, it’s important to contact the IRS immediately using the number provided in the notice. There could be a mistake, or it might indicate a possible case of identity theft. The IRS will be able to review your account and provide further clarification on what prompted the changes.

Is the refund amount on the CP21B notice final?

Yes, the refund amount listed on the CP21B Notice is typically the final amount after the IRS has made the necessary adjustments to your tax return. However, if you have outstanding debts, such as unpaid federal or state taxes, child support, or student loans, the IRS may apply part or all of your refund to those obligations before issuing the remaining amount to you.
Need help understanding other IRS letters and notices? Visit our comprehensive guide to IRS Letters and Notices or search for the document you received in the table below.
IRS Letter or Notice Number
Notice Description
CP01The IRS verified your claim of identity theft and will monitor your account.
CP01HThe IRS received a tax return with a social security number that belongs to a dead person.
CP02HMoney is due on an amended return based on a grant received due to Hurricane Katrina, Rita, or Wilma.
CP03CYou received the First-Time Homebuyer Credit for a house you purchased.
CP04You may be eligible for tax deferment because either you or a spouse served in a combat zone, a qualified contingency operation, or a hazardous duty station during the tax year specified on your notice.
CP08You may be entitled to additional money due to the Additional Child Tax Credit.
CP10Your tax return changed due to a miscalculation, and the refund you wanted to apply to an estimated tax payment has changed.
CP10AYour tax return changed due to a miscalculation of the Earned Income Credit, and the refund you wanted to apply to an estimated tax payment has changed.
CP11You owe money because the IRS amended your return due to a miscalculation.
CP11AYour tax return changed due to a miscalculation of the Earned Income Credit, and the refund you wanted to apply to an estimated tax payment also changed.
CP11MYour tax return changed due to a miscalculation of the Making Work Pay and Government Retiree Credit, and the refund you wanted to apply to an estimated tax payment has changed.
CP12You are due a bigger refund because the IRS corrected one or more mistakes on your tax return.
CP12AThe IRS made changes to correct the Earned Income Credit (EIC) claimed on your tax return.
CP12E or CP12FThe IRS corrected a miscalculation on your return.
CP12MThe IRS made changes to the computation of the Making Work Pay and/or Government Retiree Credits on your return.
CP12RThe IRS made changes to the computation of the Rebate Recovery Credit on your return.
CP13The IRS made changes to your return due to a miscalculation. There is no refund or amount due. Your balance is zero.
CP13AThe IRS made changes to your return due to a miscalculation of the Earned Income Credit. There is no refund or amount due. Your balance is zero.
CP13MThe IRS made changes to your return due to a miscalculation of the Making Work Pay credit or the Government Retiree Credit. There is no refund or amount due. Your balance is zero.
CP13RThe IRS made changes to your return due to a miscalculation of the Recovery Rebate Credit. There is no refund or amount due. Your balance is zero.
CP14You owe money on unpaid taxes.
CP16The IRS made changes to your return due to a miscalculation. The refund you were due was applied to other tax debts.
CP21AYou owe money due to the changes you requested that the IRS make on your tax returns.
CP21BYou are due a refund due to the changes you requested that the IRS make on your tax returns. The money should arrive within 2 to 3 weeks.
CP21CThe IRS made the requested changes to your tax return. You will not receive a refund, and there is no tax due. Your balance is zero.
CP21EAs a result of your recent audit, the IRS made changes to your tax return, and you owe money as a result of those changes.
CP21IThe IRS made changes to your tax return relating to the Individual Retirement Arrangement (IRA) taxes. You owe money due to the changes.
CP22AThe IRS made the changes you requested, and you owe money as a result.
CP22EAs a result of your recent audit, the IRS changed your tax return, and you now owe money.
CP22IThe IRS made changes to your tax return relating to the Individual Retirement Arrangement (IRA) taxes. You owe money due to the changes.
CP23The IRS changed your return because there was a difference between the amount of estimated tax payments listed on your tax return and the amount actually posted to your account. You owe taxes due to these changes.
CP24The IRS changed your return because there was a difference between the amount of estimated tax payments listed on your tax return and the amount actually posted to your account. This resulted in an overpayment of estimated taxes.
CP24EThe IRS changed your return because there was a difference between the amount of estimated tax payments listed on your tax return and the amount actually posted to your account. This resulted in an overpayment of estimated taxes.
CP25The IRS changed your return because there was a difference between the amount of estimated tax payments listed on your tax return and the amount actually posted to your account. You are not due a refund, nor do you owe any money. Your balance is zero.
CP31You need to update your address because your refund check was returned to the IRS.
CP45The IRS was unable to apply your overpayment to your estimated tax as you requested.
CP49The IRS used all or part of your refund to pay a tax debt.
CP53Your refund check will be sent by mail because the IRS can’t provide your refund through direct deposit.
CP57The bank declined your payment, so the IRS was unable to draft funds from your bank account.
CP71A reminder of the amount you owe in tax, penalty, and interest.
CP71AA reminder of the amount you owe in tax, penalty, and interest.
CP71CA reminder of the amount you owe in tax, penalty, and interest.
CP71DA reminder of the amount you owe in tax, penalty, and interest.
CP88The IRS is holding your refund because you haven't filed one or more tax returns, and it believes you will owe tax.
CP90The IRS is notifying you of its intent to levy certain assets for unpaid taxes. You have the right to dispute the levy in a Collection Due Process hearing.
CP91The IRS will levy up to 15% of your social security benefits for unpaid taxes.
CP120The IRS needs documentation of your tax-exempt status.
CP120AYour organization’s tax-exempt status has been revoked because it failed to file a Form 990 series return for three consecutive years.
CP130You may no longer need to pay the Alternative Minimum Tax (AMT) because your tax return filing requirements changed.
CP152The IRS received your return.
CP153The IRS will send your refund by mail because your direct deposit did not go through.
CP161You have an unpaid balance due to the IRS.
CP166Your monthly payment to the IRS did not go through due to insufficient funds in your bank account.
CP178You may no longer owe excise tax because your tax return filing requirements changed.
CP231You need to update your address because your refund was returned to the IRS.
CP259You did not file the business tax return identified in the notice.
CP259AYou should have filed these forms but did not – Form 990/990-EZ, Return of Organization Exempt From Income Tax, or Form 990-N (e-Postcard).
CP259BThe IRS requires you to file these forms but did not – Form 990-PF, Return of Private Foundation or Section 4947(a)(1) Nonexempt Charitable Trust Treated as a Private Foundation.
CP259CThe IRS believes that you are a private foundation, but did not file the required Form 990-PF, Return of Private Foundation or Section 4947(a)(1) Nonexempt Charitable Trust Treated as a Private Foundation.
CP259DYou must file this form, but you did not – Form 990-T, Exempt Organization Business Income Tax Return.
CP259EYou should have filed this form, but you did not – Form 990-N (e-Postcard) or Form 990/990-EZ, Return of Organization Exempt From Income Tax.
CP259FThe IRS requires you to file this form but did not – Form 5227, Split-Interest Trust Information Return.
CP259GThe IRS requires you to file this form, but you didn’t – Form 1120-POL, U.S. Income Tax Return for Certain Political Organizations.
CP259HAs a tax-exempt political organization, you must file this form, but you did not – Form 990/990-EZ, Return of Organization Exempt From Income Tax.
CP276AYou submitted your tax liability schedule incorrectly. The IRS typically charges a Federal Tax Deposit (FTD) penalty for this but did not this time.
CP276BThe IRS did not receive the correct amount of tax deposits. It normally charges a Federal Tax Deposit (FTD) penalty but did not this time.
CP297The IRS is notifying you of its intent to levy certain assets for unpaid taxes. You have the right to dispute the levy at a Collection Due Process hearing.
CP297AThe IRS has levied your assets for unpaid taxes. You have the right to dispute the levy at a Collection Due Process hearing.
CP298The IRS notifying you of its intent to levy up to 15% of your social security benefits for unpaid taxes.
CP501You have a balance due on one of your tax accounts.
CP503You have an unpaid balance on one of your accounts, and the IRS has not heard from you.
CP504You have an unpaid amount due on your account. If you do not pay immediately, the IRS will levy your state income tax refund to apply it to the amount you owe.
CP504BYou have an unpaid amount due on your account. If you do not pay immediately, the IRS will levy certain property or rights to property to apply it to the amount you owe.
CP521A reminder that you have an installment agreement payment due.
CP523You have defaulted on your payment agreement. Therefore the IRS is terminating the agreement and will levy your assets.
CP601Usted tiene un saldo pendiente de pago (dinero que le debe al IRS) en una de sus cuentas contributivas.
CP603No hemos recibido respuesta de parte de usted y todavía tiene un saldo sin pagar en una de sus cuentas contributivas.
CP604Usted tiene un saldo sin pagar en su cuenta. De no pagar esta cantidad inmediatemente, el IRS embargará cualquier reembolso de impuestos estatales al que tenga derecho y aplicarlo al pago de su deuda.
CP604BUsted tiene un saldo sin pagar en su cuenta. De no pagar esta cantidad inmediatemente, el IRS embargará ciertas propiedades o derechos de propiedad y lo aplicará al pago de su deuda.
CP621Este aviso es para notificarle que usted tiene un plan de pagos a plazos vencido. Por favor, envíe el pago inmediatamente.
CP623Este aviso es para informarle nuestra intención de cancelar su plan de pagos a plazos y confiscar (embargar) sus bienes. Usted incumplió en su acuerdo.
CP711Nosotros realizamos cambios a su planilla debido a que entendemos que hubo un cálculo erróneo. Como resultado de estos cambios, usted adeuda dinero por sus contribuciones.
CP721Hicimos el(los) cambio(s) que usted solicitó a su declaración de impuestos para el año tributario que aparece en su aviso. Como resultado de éste(estos) cambio(s) usted debe dinero en sus impuestos.
CP722Hicimos el(los) cambio(s) que usted solicitó a su declaración de impuestos para el año tributario que aparece en su aviso. Como resultado de éste(estos) cambio(s) usted debe dinero en sus impuestos.
CP771Usted recibió este aviso para recordarle sobre la cantidad que adeuda en contribuciones, multas e intereses.
CP772Usted recibió este aviso para recordarle sobre la cantidad que adeuda en contribuciones, multas e intereses.
CP773Usted recibió este aviso para recordarle sobre la cantidad que adeuda en contribuciones, multas e intereses.
CP774Usted recibió este aviso para recordarle sobre la cantidad que adeuda en contribuciones, multas e intereses.
CP959Usted no radicó su planilla de contribución de negocios identificada en este aviso.
CP2000The income or payment information on file doesn’t match your tax return. The discrepancy may result in an increase or decrease in your tax due.
CP3219AThe IRS has received information that is different from what you reported on your tax return. This may result in an increase or decrease in your tax.
CP3219NThe IRS didn’t receive your tax return, so it calculated your return based on the information received from employers, financial institutions, and others. If you want to challenge the proposed tax, you have 90 days from the date of this notice. If you are outside the country, you have 150 days.
Letter 0012CThe IRS needs additional information to process your tax return.
Letter 0484CThe IRS wants a completed
Letter 0525Updates you on proposed changes after an IRS examination. Any changes are explained and details the refund due or taxes owed.
Letter 531IRS Notice of Deficiency. The information the IRS received about you was different from what you reported on your return.
Letter 0668D(LP 68)The IRS released their levy.
Letter 0549CYour tax bill was paid.
Letter 0681CThe IRS accepted your payment proposal. However, this is not a formal Installment Agreement.
Letter 0757CYou did not adhere to the terms of your Installment Agreement.
Letter LT 11The IRS plans to seize your property or rights to property.
Letter 1058The IRS has not received your payment. It plans to seize your property or rights to property.
Letter 1615 (LT 18)You must respond to the IRS within 10 days of this notice regarding past due tax returns.
Letter 1737 (LT 27)Complete and sign Form 433F, Collection Information Statement.
Letter 1961CYour application for a Direct Debit Installment Agreement was declined. It explains why and what you need to do to qualify.
Letter 1962CYour application for a
Letter 2050 (LT 16)The IRS is trying to collect unpaid taxes from you from returns that have been filed or from returns that have not been filed.
Letter 2257CThe IRS is providing the payoff amount that you requested.
Letter 226-JAn IRS letter to large employers notifying them that they may be liable for an Employer Shared Responsibility Payment (ESRP).
Letter 2271CA request for an Installment Agreement has been approved. It explains the fees and how to qualify for a Low Income Fee Reduction. The letter may also request missing information.
Letter 2272CAn IRS letter explaining why your request to pay the balance due in installments was declined.
Letter 2273CA confirmation letter of your request to pay the balance due in installments. It contained the amount to pay, fees charged, and where to send payment. Instructions on how to apply for the Low Income Fee Reduction included.
Letter 2318CA response to a request to pay taxes due to payroll deductions. It also explains the fees that are charged.
Letter 2357CThe IRS is admitting that it did not send you the balance due notices that it should have.
Letter 2603CThe IRS accepted your installment agreement. The IRS will file a Notice of Federal Tax Lien on your personal property.
Letter 2604CThe IRS has accepted your request for installment payments. This IRS letter provides the monthly payment, the address where to send it, and the fees charged. The letter also provides instructions on how to apply for the Low Income Fee Reduction.
Letter 2761CThe IRS is requesting your combat zone service dates to ensure that it provides you with the special provisions and protection of the combat zone deferment. Copies of military orders or other documentation to support your time served may be requested. Civilians working in support of the Armed Forces may be required to provide a Letter of Authorization or a letter from their employer.
Letter 2789CAn annual reminder notice, as required by law, of the balance due to the IRS. It explains that penalties and interest continue to accrue until the balance is fully paid.
Letter 2840CConfirms your Installment Agreement request and includes the payment amount and due date. This IRS letter explains the fees charged for paying monthly and explains how to apply for the Low Income Fee Reduction (if you qualify).
Letter 3030CProvides an explanation of the tax, penalty, and interest still due on your account.
Letter 3127CA confirmation of your request to make a change to your Installment Agreement. This IRS letter explains the fees for the change. Changes can be to the payment amount or due date, or it can include additional liabilities.
Letter 3174A reminder of taxes due after the IRS has sent a Notice of Intent to Levy.
Letter 3217CThe IRS has accepted your request to pay the balance in installments. This IRS letter provides your payment amount, the due date, and fees charged. The letter also provides instructions on applying for the Low Income Fee Reduction (if you qualify).
Letter 3228 (LT 39)A request to pay the balance due within 10 days using the envelope provided.
Letter 3500The IRS has received your documents, and it needs additional time to review them.
Letter 3572Your Federal Income Tax Return has been selected for examination. The IRS auditor requests that you call to schedule an audit appointment.
Letter 4883CThe IRS received your federal income tax return but needs more information to verify your identity in order to process your tax return accurately.
Letter 4903 (LT 26)You must file your tax returns immediately. The IRS has previously contacted you, but it did not receive a response.
Letter LP 47The IRS is trying to locate the person identified in the letter and is requesting that you provide their new address.
Letter LP 59The IRS has not received a response to the notice of levy it previously sent.
Audit Letter 2205The IRS manages audits either by mail or through an in-person interview to review your records. The interview may be at an IRS office (office audit) or the taxpayer’s home, place of business, or accountant’s office (field audit).
Letter 915You recently underwent an audit, and the IRS informs you that you now owe taxes.

Key takeaways

  • The CP21B Notice is sent when the IRS makes adjustments to your tax return, resulting in a refund.
  • Review the notice carefully and ensure the changes match your records.
  • Refunds typically arrive within 2-3 weeks of receiving the notice, but delays can happen.
  • If you disagree with the changes, contact the IRS promptly using the details in the notice.
  • Keep copies of all correspondence with the IRS for your records.

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