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CP2100A Notice: What Is It and How Should You Respond?

Silas Bamigbola avatar image
Last updated 11/25/2024 by
Silas Bamigbola
Fact checked by
Ante Mazalin
Summary:
The CP2100A Notice is issued by the IRS to notify payers, such as businesses and financial institutions, of discrepancies in the taxpayer identification numbers (TINs) submitted on information returns like Form 1099. These discrepancies can include missing TINs, invalid TINs, or mismatched name/TIN combinations. Prompt action is required to address these issues and comply with IRS regulations to avoid penalties.
Receiving a CP2100A Notice from the IRS can be concerning, but understanding its purpose and how to respond is key to resolving the issue efficiently. The notice is sent to payers whose submitted information returns contain errors related to taxpayer identification numbers (TINs). This article will provide an in-depth guide to understanding the CP2100A Notice, taking corrective actions, and ensuring compliance with IRS regulations.

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What is the CP2100A notice?

The CP2100A Notice is a communication from the IRS alerting payers that one or more of their information returns, such as Form 1099, contain TIN discrepancies. These discrepancies fall into three main categories:
  • Missing TINs: The taxpayer identification number is absent on the return.
  • Incorrect TINs: The provided TIN is invalid or improperly formatted.
  • Name/TIN mismatches: The name and TIN combination does not match IRS records.
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.

What’s the difference between a CP2100 and CP2100A notice?

Both CP2100 and CP2100A Notices address TIN issues, but the primary difference lies in the volume of errors:
  • CP2100 Notice: Sent to payers with 50 or more TIN discrepancies.
  • CP2100A Notice: Sent to payers with fewer than 50 TIN discrepancies.

Pro Tip

Use the IRS TIN matching program to verify payee TINs before filing Form 1099s. This step helps you catch errors early and avoid receiving a CP2100A notice.

Common reasons for receiving a CP2100A notice

There are several reasons why a payer may receive a CP2100A Notice. These include:
  • Data entry errors: Mistakes made during manual or electronic entry of TINs or names.
  • Outdated information: Payee details that have not been updated to reflect changes, such as name changes due to marriage.
  • Incomplete forms: Submitting forms with missing or incomplete TINs.
  • IRS or payee errors: Issues in IRS processing or incorrect information provided by the payee.

What to do when you receive a CP2100A notice

When you receive a CP2100A Notice, taking prompt and appropriate action is crucial. Follow these steps:
  • Review the notice: Carefully read the notice and examine the list of payees with TIN discrepancies.
  • Compare with internal records: Cross-check the IRS-provided list with your own payee records to confirm errors.
  • Initiate backup withholding: If a payee’s TIN is missing or clearly incorrect, begin backup withholding immediately.
  • Send “B” notices: For mismatched TINs, issue the appropriate “B” Notice to request corrected information from the payee.
  • Update records: Correct any discrepancies in your internal files based on the payee’s response.

Backup withholding and its importance

Backup withholding is a critical component of the IRS’s process for ensuring accurate tax reporting. If a payee fails to provide a valid TIN or provides incorrect information, the payer is required to withhold a percentage of the payment—currently 24%—and remit it to the IRS. Here’s how it works:
  • When to begin: Initiate backup withholding immediately if a TIN is missing, invalid, or if the payee fails to respond to a “B” Notice.
  • How to calculate: The 24% withholding is applied to reportable payments, such as interest, dividends, or nonemployee compensation.
  • Reporting: Backup withholding amounts must be reported to the IRS on Form 945, Annual Return of Withheld Federal Income Tax.
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Pro Tip

Maintain accurate and up-to-date payee records by requesting updates annually. This reduces the likelihood of mismatches or missing TINs.

How to avoid future CP2100A notices

To reduce the likelihood of receiving future CP2100A Notices, consider implementing the following best practices:
  • Use IRS TIN matching program: Verify payee TINs against IRS records before submitting information returns.
  • Maintain updated records: Regularly update payee information to reflect changes in names, addresses, or TINs.
  • Train staff: Ensure that employees responsible for filing information returns are knowledgeable about proper procedures.
  • Double-check entries: Review all forms for accuracy before submission to minimize errors.
Proactive measures can help streamline your reporting processes and avoid unnecessary complications.

Consequences of ignoring a CP2100A notice

Failing to address a CP2100A notice can lead to several serious consequences, impacting both your business operations and financial standing. Understanding these potential outcomes is essential to emphasize the importance of timely action.
  • IRS penalties: Ignoring the notice can result in penalties for failing to file accurate information returns. These fines can accumulate quickly if the errors remain unaddressed.
  • Backup withholding liability: If you fail to initiate backup withholding for payments associated with missing or incorrect TINs, you may be held liable for the uncollected withholding amount, along with added penalties and interest.
  • Increased IRS scrutiny: Non-compliance with IRS regulations can draw heightened attention to your business filings, potentially leading to audits or further investigation.
  • Unresolved payment delays: Payees with TIN discrepancies may experience payment delays, which can strain your relationships with contractors, vendors, or other recipients.
  • Reputational damage: Prolonged errors or non-compliance can harm your reputation as a responsible payer, affecting your credibility with both the IRS and your payees.

Pro Tip

Respond promptly to any CP2100A notice to avoid penalties and interruptions to your business operations. Delay could lead to increased IRS scrutiny.

Seeking professional help

Managing the complexities of a CP2100A notice can be overwhelming, especially for businesses with numerous payees or limited familiarity with IRS procedures. Seeking professional assistance can streamline the resolution process and prevent costly errors.
  • Certified tax professionals: CPAs, enrolled agents, and tax attorneys can help you understand the notice, address discrepancies, and respond correctly. Their expertise ensures that your responses comply with IRS guidelines.
  • Payroll or accounting services: Professional accounting firms or payroll providers can assist in verifying payee TINs, filing corrections, and maintaining accurate records to prevent future notices.
  • IRS taxpayer advocate service: If you encounter challenges in resolving the notice, the IRS’s taxpayer advocate service offers free assistance to help businesses navigate complex situations.
  • Consultation for training: Professionals can provide training for your staff on proper procedures for TIN collection, verification, and reporting, reducing the likelihood of future issues.
While professional services may involve a cost, the investment can save time, reduce stress, and prevent financial penalties associated with mismanagement or non-compliance. If the situation involves significant errors or potential liability, professional help is especially valuable.
Looking for the best way to reduce your tax burden? We’ve compiled a list of the Best Tax Relief Companies to help you navigate tax challenges and save money. Click here to discover trusted experts who can assist you with tax resolution, IRS negotiations, and more!

Frequently asked questions

What payments are subject to backup withholding?

Backup withholding applies to certain payments when a payee fails to provide a valid TIN or provides incorrect information. These payments include interest, dividends, nonemployee compensation, rent, royalties, and other reportable income. Payers must withhold 24% of the payment amount and remit it to the IRS if required.

Can I avoid sending “B” notices if the payee corrects their information?

If the payee provides updated and accurate TIN information before you send a “B” Notice, you may not need to issue it. However, you must ensure that the corrected information resolves the discrepancy and is updated in your records. If there’s doubt about the accuracy, sending a “B” Notice is recommended.

What should I do if I find errors in my submitted Form 1099s?

If you discover errors in the information returns you’ve already submitted, you should file corrected forms with the IRS as soon as possible. This includes fixing incorrect TINs, payee names, or other discrepancies. Be sure to mark the corrected forms clearly as “Corrected” to avoid duplication.

Do I need to inform the IRS about updated payee information?

No, you do not need to notify the IRS directly about updated payee information. Instead, update your internal records to ensure that future filings are accurate. The IRS will recognize the corrected TINs or names in your next filing cycle.

How can I verify TINs to prevent future CP2100A notices?

The IRS offers a TIN matching program that allows payers to verify payee TINs against IRS records before submitting information returns. Using this program helps identify discrepancies early, reducing the risk of receiving CP2100A Notices. Regularly verifying TINs is a best practice for compliance.
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

  • CP2100A Notices alert payers to TIN discrepancies in their submitted information returns.
  • Prompt action, such as sending “B” Notices and initiating backup withholding, is required.
  • Non-compliance can lead to penalties and increased IRS scrutiny.
  • Prevent future notices by maintaining accurate payee records and utilizing the IRS TIN matching program.

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