Letter 2644B: Your Guide to IRS Document Review Delays

Last updated 11/26/2024 by

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Summary:

The IRS issues Letter 2644B to inform taxpayers that additional time is required to process documents submitted during an audit or review. This letter acknowledges receipt of the provided documents and outlines next steps, offering clarity about ongoing IRS evaluations. While not indicative of immediate issues, timely responses to any follow-up requests are crucial to avoiding delays or complications in the review process. This guide explains Letter 2644B, its implications, and actionable steps you can take to manage it effectively.

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Receiving correspondence from the IRS often raises concern, especially when it involves an ongoing audit or review. Letter 2644B is one such document, serving as confirmation that the IRS has received your submitted documents but requires additional time to process them. While this might seem unsettling, it is not necessarily bad news. Understanding the letter’s purpose and taking the right steps can ensure your compliance and minimize delays. This article provides a thorough breakdown of Letter 2644B, its impact, and how to respond effectively.

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What is IRS letter 2644B?

IRS Letter 2644B is a formal acknowledgment sent to taxpayers involved in an ongoing audit or review. The purpose of the letter is twofold:

To confirm receipt of documents or responses you previously provided to the IRS.
To notify you that more time is needed to evaluate your case.
The IRS typically issues this letter when additional information, resources, or internal reviews are required before they can make a final determination regarding your audit or inquiry.

Why is letter 2644B issued?
The IRS sends Letter 2644B for several reasons, including:

Verification of submitted documents: To ensure that the documents meet their requirements and resolve the issues being audited.
Complexity of the case: Some audits or reviews require extensive cross-referencing, increasing processing time.
Backlogs at the IRS: Internal delays or staffing shortages may also result in longer-than-expected processing times.
This letter is not a final determination, nor does it imply wrongdoing. It simply indicates that your case remains under review.

Pro tip

Keep a detailed record of all your correspondence with the IRS, including Letter 2644B. This can be valuable for reference in case of further follow-ups or inquiries.

How does letter 2644B affect you?

Receiving Letter 2644B doesn’t necessarily mean there’s a problem with your tax return or the documents submitted. However, it does mean your case may take longer to resolve.

Potential implications:
Delays in resolution: Your tax refund, credit adjustments, or final audit determination may be delayed.
Additional document requests: The IRS may follow up with requests for more information or clarifications.
Stress and uncertainty: While the letter itself isn’t an indication of penalties, delays can cause anxiety for taxpayers awaiting outcomes.
Understanding its purpose can help reduce unnecessary worry. Taking proactive steps and ensuring proper communication with the IRS can prevent further delays.

What should you do when you receive letter 2644B?

Acting promptly upon receiving Letter 2644B is crucial for minimizing potential disruptions. Here are the recommended steps:

Read the letter thoroughly: Identify why the IRS is contacting you and note any specific instructions or timelines mentioned.
Check your records: Ensure the documents you provided match what the IRS acknowledged receiving.
Contact the IRS if needed: If you have questions about the letter, call the number provided in the document for clarification.
Be patient: Avoid submitting duplicate documentation unless explicitly requested. Allow the IRS time to complete their review.

Keep a copy of the letter and all associated documentation for your records.

Pro tip

Contact the IRS as soon as you receive Letter 2644B if you have any questions. Prompt communication can prevent unnecessary delays in resolving your case.

How to follow up with the IRS after receiving letter 2644B

Maintaining clear and timely communication with the IRS is essential to managing your case effectively.

Steps to follow up:
Call the IRS: Use the contact number provided in the letter to request an update or clarify any details.
Respond to additional requests: If the IRS requests more information, respond promptly with accurate and complete documentation.
Track your case status: Use the IRS online portal or contact your assigned agent for updates on the progress of your case.
While follow-up can be time-consuming, it demonstrates your cooperation and commitment to resolving the matter.

Common issues addressed in audits involving letter 2644B

Audits requiring Letter 2644B typically revolve around these common issues:

Income verification
The IRS may need more time to verify income discrepancies, especially for self-employed individuals or small business owners.

Deductions and credits
If you claimed large deductions or credits, the IRS may require additional review to confirm eligibility.

Filing errors
Mistakes in reporting figures or misclassifying income can also lead to prolonged reviews.

Pro tip

If your documents are complex or require extensive review, consider hiring a tax professional to assist you. This can help ensure your submission is accurate and minimize the risk of further delays.

What happens if you ignore letter 2644B?

Ignoring Letter 2644B can have significant consequences. Although the letter itself does not indicate penalties, failing to respond to follow-up requests or provide additional information can escalate the situation.

Potential outcomes:
Prolonged audits: Your case may take longer to resolve, delaying potential refunds or credit adjustments.
Enforcement actions: The IRS may issue Notices of Deficiency or adjust your taxes without your input.
Increased penalties: Noncompliance could lead to interest accrual or penalties if discrepancies remain unresolved.

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Frequently asked questions

What should I do if I lost my copy of letter 2644B?

If you misplaced your Letter 2644B, contact the IRS immediately by calling the number provided on their website or your previous correspondence. They can provide a duplicate or offer guidance on how to proceed with your case without the physical copy. Be prepared to verify your identity when you call.

Can I resolve the issues related to letter 2644B online?

While you can check the status of your case and access some IRS tools online, resolving issues related to Letter 2644B often requires submitting physical documents or speaking directly with an IRS agent. Always follow the instructions outlined in the letter for accurate resolution.

How long should I wait before following up with the IRS?

If the IRS has not provided a timeline in Letter 2644B, it is reasonable to wait 30 days before following up. For clarity, refer to any contact details or timelines mentioned in the letter. Proactively reaching out sooner may help expedite the review process.

What documents should I keep related to letter 2644B?

Retain a copy of Letter 2644B, all correspondence with the IRS, and any documents submitted for your audit or review. Keeping a clear record ensures you have the necessary information if the IRS requests further clarification or if future issues arise.

Can I hire a tax professional to assist with letter 2644B?

Yes, hiring a tax professional, such as a CPA or an enrolled agent, can help streamline the process, especially if the audit or review is complex. Tax professionals can communicate with the IRS on your behalf, ensuring accuracy and minimizing delays.

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

CP01	The IRS verified your claim of identity theft and will monitor your account.
CP01H	The IRS received a tax return with a social security number that belongs to a dead person.
CP02H	Money is due on an amended return based on a grant received due to Hurricane Katrina, Rita, or Wilma.
CP03C	You received the First-Time Homebuyer Credit for a house you purchased.
CP04	You 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.
CP08	You may be entitled to additional money due to the Additional Child Tax Credit.
CP10	Your tax return changed due to a miscalculation, and the refund you wanted to apply to an estimated tax payment has changed.
CP10A	Your 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.
CP11	You owe money because the IRS amended your return due to a miscalculation.
CP11A	Your 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.
CP11M	Your 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.
CP12	You are due a bigger refund because the IRS corrected one or more mistakes on your tax return.
CP12A	The IRS made changes to correct the Earned Income Credit (EIC) claimed on your tax return.
CP12E or CP12F	The IRS corrected a miscalculation on your return.
CP12M	The IRS made changes to the computation of the Making Work Pay and/or Government Retiree Credits on your return.
CP12R	The IRS made changes to the computation of the Rebate Recovery Credit on your return.
CP13	The IRS made changes to your return due to a miscalculation. There is no refund or amount due. Your balance is zero.
CP13A	The 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.
CP13M	The 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.
CP13R	The 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.
CP14	You owe money on unpaid taxes.
CP16	The IRS made changes to your return due to a miscalculation. The refund you were due was applied to other tax debts.
CP21A	You owe money due to the changes you requested that the IRS make on your tax returns.
CP21B	You 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.
CP21C	The 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.
CP21E	As a result of your recent audit, the IRS made changes to your tax return, and you owe money as a result of those changes.
CP21I	The IRS made changes to your tax return relating to the Individual Retirement Arrangement (IRA) taxes. You owe money due to the changes.
CP22A	The IRS made the changes you requested, and you owe money as a result.
CP22E	As a result of your recent audit, the IRS changed your tax return, and you now owe money.
CP22I	The IRS made changes to your tax return relating to the Individual Retirement Arrangement (IRA) taxes. You owe money due to the changes.
CP23	The 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.
CP24	The 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.
CP24E	The 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.
CP25	The 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.
CP31	You need to update your address because your refund check was returned to the IRS.
CP45	The IRS was unable to apply your overpayment to your estimated tax as you requested.
CP49	The IRS used all or part of your refund to pay a tax debt.
CP53	Your refund check will be sent by mail because the IRS can’t provide your refund through direct deposit.
CP57	The bank declined your payment, so the IRS was unable to draft funds from your bank account.
CP71	A reminder of the amount you owe in tax, penalty, and interest.
CP71A	A reminder of the amount you owe in tax, penalty, and interest.
CP71C	A reminder of the amount you owe in tax, penalty, and interest.
CP71D	A reminder of the amount you owe in tax, penalty, and interest.
CP88	The IRS is holding your refund because you haven't filed one or more tax returns, and it believes you will owe tax.
CP90	The 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.
CP91	The IRS will levy up to 15% of your social security benefits for unpaid taxes.
CP120	The IRS needs documentation of your tax-exempt status.
CP120A	Your organization’s tax-exempt status has been revoked because it failed to file a Form 990 series return for three consecutive years.
CP130	You may no longer need to pay the Alternative Minimum Tax (AMT) because your tax return filing requirements changed.
CP152	The IRS received your return.
CP153	The IRS will send your refund by mail because your direct deposit did not go through.
CP161	You have an unpaid balance due to the IRS.
CP166	Your monthly payment to the IRS did not go through due to insufficient funds in your bank account.
CP178	You may no longer owe excise tax because your tax return filing requirements changed.
CP231	You need to update your address because your refund was returned to the IRS.
CP259	You did not file the business tax return identified in the notice.
CP259A	You 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).
CP259B	The 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.
CP259C	The 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.
CP259D	You must file this form, but you did not – Form 990-T, Exempt Organization Business Income Tax Return.
CP259E	You 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.
CP259F	The IRS requires you to file this form but did not – Form 5227, Split-Interest Trust Information Return.
CP259G	The IRS requires you to file this form, but you didn’t – Form 1120-POL, U.S. Income Tax Return for Certain Political Organizations.
CP259H	As 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.
CP276A	You submitted your tax liability schedule incorrectly. The IRS typically charges a Federal Tax Deposit (FTD) penalty for this but did not this time.
CP276B	The IRS did not receive the correct amount of tax deposits. It normally charges a Federal Tax Deposit (FTD) penalty but did not this time.
CP297	The 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.
CP297A	The IRS has levied your assets for unpaid taxes. You have the right to dispute the levy at a Collection Due Process hearing.
CP298	The IRS notifying you of its intent to levy up to 15% of your social security benefits for unpaid taxes.
CP501	You have a balance due on one of your tax accounts.
CP503	You have an unpaid balance on one of your accounts, and the IRS has not heard from you.
CP504	You 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.
CP504B	You 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.
CP521	A reminder that you have an installment agreement payment due.
CP523	You have defaulted on your payment agreement. Therefore the IRS is terminating the agreement and will levy your assets.
CP601	Usted tiene un saldo pendiente de pago (dinero que le debe al IRS) en una de sus cuentas contributivas.
CP603	No hemos recibido respuesta de parte de usted y todavía tiene un saldo sin pagar en una de sus cuentas contributivas.
CP604	Usted 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.
CP604B	Usted 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.
CP621	Este aviso es para notificarle que usted tiene un plan de pagos a plazos vencido. Por favor, envíe el pago inmediatamente.
CP623	Este aviso es para informarle nuestra intención de cancelar su plan de pagos a plazos y confiscar (embargar) sus bienes. Usted incumplió en su acuerdo.
CP711	Nosotros 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.
CP721	Hicimos 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.
CP722	Hicimos 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.
CP771	Usted recibió este aviso para recordarle sobre la cantidad que adeuda en contribuciones, multas e intereses.
CP772	Usted recibió este aviso para recordarle sobre la cantidad que adeuda en contribuciones, multas e intereses.
CP773	Usted recibió este aviso para recordarle sobre la cantidad que adeuda en contribuciones, multas e intereses.
CP774	Usted recibió este aviso para recordarle sobre la cantidad que adeuda en contribuciones, multas e intereses.
CP959	Usted no radicó su planilla de contribución de negocios identificada en este aviso.
CP2000	The 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.
CP3219A	The 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.
CP3219N	The 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 0012C	The IRS needs additional information to process your tax return.
Letter 0484C	The IRS wants a completed
Letter 0525	Updates you on proposed changes after an IRS examination. Any changes are explained and details the refund due or taxes owed.
Letter 531	IRS 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 0549C	Your tax bill was paid.
Letter 0681C	The IRS accepted your payment proposal. However, this is not a formal Installment Agreement.
Letter 0757C	You did not adhere to the terms of your Installment Agreement.
Letter LT 11	The IRS plans to seize your property or rights to property.
Letter 1058	The 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 1961C	Your application for a Direct Debit Installment Agreement was declined. It explains why and what you need to do to qualify.
Letter 1962C	Your 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 2257C	The IRS is providing the payoff amount that you requested.
Letter 226-J	An IRS letter to large employers notifying them that they may be liable for an Employer Shared Responsibility Payment (ESRP).
Letter 2271C	A 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 2272C	An IRS letter explaining why your request to pay the balance due in installments was declined.
Letter 2273C	A 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 2318C	A response to a request to pay taxes due to payroll deductions. It also explains the fees that are charged.
Letter 2357C	The IRS is admitting that it did not send you the balance due notices that it should have.
Letter 2603C	The IRS accepted your installment agreement. The IRS will file a Notice of Federal Tax Lien on your personal property.
Letter 2604C	The 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 2761C	The 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 2789C	An 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 2840C	Confirms 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 3030C	Provides an explanation of the tax, penalty, and interest still due on your account.
Letter 3127C	A 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 3174	A reminder of taxes due after the IRS has sent a Notice of Intent to Levy.
Letter 3217C	The 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 3500	The IRS has received your documents, and it needs additional time to review them.
Letter 3572	Your Federal Income Tax Return has been selected for examination. The IRS auditor requests that you call to schedule an audit appointment.
Letter 4883C	The 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 47	The IRS is trying to locate the person identified in the letter and is requesting that you provide their new address.
Letter LP 59	The IRS has not received a response to the notice of levy it previously sent.
Audit Letter 2205	The 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 915	You recently underwent an audit, and the IRS informs you that you now owe taxes.

Key takeaways

Letter 2644B is sent by the IRS to confirm receipt of documents and notify taxpayers of additional processing time needed.
This letter does not indicate penalties or final audit determinations.
Act promptly by reading the letter thoroughly, verifying your records, and contacting the IRS if needed.
Ignoring follow-up requests can lead to delays, penalties, or adjustments made without your input.

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