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CP518B Notice: What Is It and How Should You Respond?

Silas Bamigbola avatar image
Last updated 11/14/2024 by
Silas Bamigbola
Fact checked by
Ante Mazalin
Summary:
The IRS CP518B Notice is sent to businesses when the IRS has not received a required tax return for a past year. This notice serves as an official reminder to file the missing return or explain why the filing may not be necessary. Responding promptly to the CP518B Notice is crucial to avoid penalties, interest, or further enforcement actions. In this article, we’ll guide you through everything you need to know about the CP518B notice, why it was issued, and the steps to take to address it.
Receiving a CP518B notice from the IRS can be stressful, especially for business owners managing multiple tax obligations. The CP518B Notice signals that a business tax return is overdue, and the IRS requires immediate attention to either file the missing return or provide an explanation. This article will walk you through the purpose of the CP518B notice, the implications of ignoring it, and the actions you can take to resolve it swiftly.

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Understanding the IRS CP518B notice

The IRS CP518B Notice is specifically aimed at businesses that have not responded to previous IRS reminders about an unfiled business tax return. It’s one of the final notices sent before the IRS begins more serious enforcement actions. Here’s what you need to know about this notice and why it’s important to take it seriously.
  • Purpose: The CP518B notice is a formal reminder that the IRS has no record of your business’s tax return for a specified tax year. It prompts the business to either file the return or clarify why it believes filing is unnecessary.
  • Possible causes: Common reasons for this notice include forgetting to file, processing delays at the IRS, or an incomplete tax return that was not accepted.
  • Consequences of ignoring: Failing to address the CP518B notice could lead to penalties, interest on any unpaid taxes, and more severe enforcement actions.
The CP518B notice requires an immediate response. Understanding why it was issued and taking the right steps to address it can help prevent potential penalties and complications.

Pro Tip

Set up notifications on your IRS account to stay updated on any filing deadlines or account changes to avoid missing important reminders like the CP518B notice.
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 the CP518B notice affects your business

Receiving a CP518B notice can impact your business if it is not addressed promptly. The IRS may take additional actions to ensure compliance if the notice goes unanswered.
  • Penalties and interest: Not filing a required tax return can result in significant penalties, such as the failure-to-file penalty. Interest on unpaid taxes also accrues daily until the balance is cleared.
  • Collection activities: If the IRS determines that your business owes taxes, they may initiate collection actions, including liens, levies, or wage garnishments against your business assets.
  • Delayed refunds: If your business is entitled to a refund, the IRS will not release it until the required tax return is filed and the account is in good standing.
Responding to the CP518B notice as soon as possible can help your business avoid these potential consequences. The IRS is more likely to work with you if you communicate promptly and clearly.

Steps to take after receiving the CP518B notice

If you receive a CP518B notice, there are specific actions you should take to resolve the issue quickly. By following these steps, you can address the missing tax return and prevent further complications.
  • Review the notice carefully: Go through the CP518B notice to identify which tax year the IRS claims is missing. Make a note of any instructions provided in the notice.
  • Confirm your filing status: Verify whether your business filed the tax return in question. If you filed the return, check your records for any IRS confirmation, such as an e-file receipt or a certified mail tracking number.
  • File the missing return: If your business did not file the return, complete and submit it promptly. Ensure accuracy to avoid delays in processing, and consider using a professional tax preparer if needed.
  • Submit Form 15103: If you believe your business is not required to file the return or if you have already filed, complete and send Form 15103 to clarify the situation. This form is used to communicate with the IRS and may help resolve the issue without further action.
  • Contact the IRS for clarification: If you have questions or need assistance, reach out to the IRS using the contact information on the notice. This can help you understand any additional steps and avoid future issues.

Pro Tip

Keep a copy of every filed return, as well as any proof of mailing or e-filing, to verify your filing status if an issue arises.

Common reasons for receiving the CP518B notice

The IRS issues a CP518B notice for several reasons. Understanding these reasons can help you prevent similar issues in the future and address the notice accurately.

Business did not file the required tax return

The most frequent reason for receiving a CP518B notice is simply that the business has not filed the required tax return for the specified tax year. Businesses with taxable income are generally required to file, and the IRS follows up when a return is not received.

IRS could not process the return

Sometimes, a business may have filed the return, but the IRS encountered errors in processing it. This could be due to missing information, incomplete sections, or incorrect data that prevents the IRS from completing the return.

Lost or unreceived return

In rare cases, tax returns can be misplaced in the mail or by the IRS during processing. If you mailed the return, it’s wise to check tracking details if available or use a service with delivery confirmation for future returns.

Exemptions from filing

Certain businesses may not be required to file due to income thresholds or filing status. If this applies to your business, you can use Form 15103 to communicate your situation and explain why filing was not required.

How to respond to the CP518B notice

Once you understand the reasons behind the CP518B notice, it’s essential to follow the correct steps for responding. The IRS provides multiple ways to resolve the issue, depending on your business’s circumstances.

Filing the required tax return

If the tax return is overdue, file it as soon as possible. Ensure the return is complete, accurate, and includes all necessary schedules or forms. Filing promptly reduces penalties and interest and can help resolve the notice efficiently.

Submitting Form 15103

Form 15103, also called the “Form 1040 Return Delinquency,” allows you to explain why the tax return was not filed or clarify that it has already been submitted. Filling out this form accurately may help avoid penalties and allow the IRS to close the notice.

Contacting the IRS for assistance

If you need further clarification on the notice or are unsure about the next steps, call the IRS using the number on the CP518B notice. Alternatively, you may visit your local IRS office or reach out to the Taxpayer Advocate Service for additional guidance.

Pro Tip

If your business cannot pay any tax owed in full, consider applying for an IRS payment plan to avoid further penalties.

Consequences of ignoring the CP518B notice

Failing to respond to a CP518B notice can have serious consequences for your business. Ignoring the notice can lead to:
  • Additional penalties and interest: The IRS imposes penalties for failing to file or pay taxes, and interest accrues daily on unpaid amounts.
  • Enforcement actions: If taxes are due, the IRS can begin collection activities, including placing liens on business assets or levying bank accounts.
  • Delayed or forfeited refunds: Any refunds owed to the business may be delayed or forfeited entirely if the notice is unresolved.

Options to ease your tax burden

Managing business taxes can be complex, especially if dealing with penalties or unfiled returns. For assistance with tax relief or navigating IRS challenges, consider seeking professional tax support. Experienced tax professionals can help you explore payment plans, negotiate with the IRS, and identify ways to reduce your overall tax burden.
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 if my business does not need to file a tax return?

If your business is not required to file a tax return, you should still respond to the CP518B notice to clarify your situation. Use Form 15103, “Form 1040 Return Delinquency,” to explain why filing isn’t necessary. Providing supporting documentation, such as proof of income levels or details on your business structure, can strengthen your case and help resolve the notice without further action.

How long do I have to respond to the CP518B notice?

Responding to the CP518B notice as soon as possible is crucial. While the IRS typically provides a timeline in the notice, it’s wise to act within 30 days to avoid potential penalties or enforcement actions. Delaying your response could lead to additional complications, so review and address the notice promptly.

Can I file a past-due business tax return electronically?

In some cases, it’s possible to file prior-year returns electronically, depending on the tax year and your business’s filing status. The IRS generally allows electronic filing for recent tax years (usually the last three years). If your return is older, you’ll need to file a paper return and mail it. For these cases, use a mailing method with tracking to confirm delivery to the IRS.

Will responding to the CP518B notice affect my business’s credit?

The CP518B notice itself does not directly impact your business credit score. However, if you ignore the notice and the IRS initiates collection actions (such as liens on business assets), it could affect your business’s creditworthiness. Promptly responding to the notice can help avoid these actions and protect your credit.

What if I can’t afford to pay the taxes owed on the unfiled return?

If your business owes taxes and cannot pay the full amount, you should still file the return and respond to the CP518B notice. The IRS offers various payment options, such as installment agreements or an Offer in Compromise, that can help businesses manage their tax debt. Ignoring the notice won’t make the debt go away; instead, it can increase penalties and interest.
For assistance with other IRS notices or to understand what each IRS letter means, visit our comprehensive guide to IRS Letters and Notices or refer to the documentation you received.
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 CP518B Notice is a reminder from the IRS that a business tax return for a specified year is missing.
  • Ignoring this notice can lead to penalties, interest, and enforcement actions by the IRS.
  • If you’ve already filed the return, you may need to submit Form 15103 to clarify the situation.
  • Prompt action is essential to avoid additional penalties and maintain good standing with the IRS.

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CP518B Notice: What Is It and How Should You Respond? - SuperMoney