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Letter 3391: How to Handle Unpaid Corporate Taxes

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Last updated 10/30/2024 by
SuperMoney Team
Fact checked by
Ante Mazalin
Summary:
The IRS Letter 3391 is issued to notify taxpayers of unpaid corporate taxes and any associated penalties. This letter often serves as a formal notice that the IRS has identified outstanding taxes related to a corporation and may include information on interest charges, penalties, and steps to resolve the issue. Timely response and action are crucial to avoid additional penalties and resolve the matter effectively. In this article, we’ll explain what Letter 3391 entails, the penalties for unpaid taxes, and the steps you can take to address the notice.
Receiving a notice from the IRS can be a daunting experience, especially when it concerns unpaid corporate taxes. Letter 3391 is a formal notification from the IRS regarding unpaid corporate taxes, which may also detail associated penalties and interest. Ignoring this notice can lead to more severe consequences, such as increased fines or enforced collections. This guide will walk you through what Letter 3391 means, how to respond to it, and how to avoid penalties 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.

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What is IRS letter 3391?

Letter 3391 is a notice issued by the IRS to inform taxpayers, particularly corporations, about outstanding tax liabilities. It is generally sent when the IRS determines that a business owes corporate taxes for a previous tax year. The notice outlines the total amount due, including the original tax owed, interest accrued, and penalties for late payments.

Why was letter 3391 issued?

The IRS typically issues Letter 3391 if a business fails to pay its corporate taxes on time. It can also be sent when the IRS audits a company’s tax return and finds discrepancies, leading to additional tax liabilities. This notice serves as a formal demand for payment and may indicate that failure to respond will result in enforced collections, such as liens or levies.

Key components of letter 3391

Letter 3391 includes several important sections that detail:
  • Amount due: The total unpaid tax amount, including any interest and penalties.
  • Reason for the notice: An explanation of why the IRS believes additional taxes are owed, which may be due to underreported income, disallowed deductions, or late payments.
  • Payment options: Instructions on how to pay the amount owed, including deadlines to avoid further penalties.
  • Appeal rights: Information on your rights to dispute the notice if you disagree with the IRS’s findings.

How does letter 3391 affect your business?

Receiving Letter 3391 means that your business has unresolved tax liabilities that need immediate attention. The notice may lead to several financial consequences if not addressed promptly.

Financial impact of unpaid taxes

Failing to respond to Letter 3391 can result in significant financial strain on a business. The unpaid tax balance will continue to accrue interest, and additional penalties may apply, increasing the total amount owed over time. Ignoring the notice could eventually lead to enforced collection actions, such as garnishing business income or placing a lien on business assets.

Legal implications

In addition to financial repercussions, unresolved corporate tax issues can have legal consequences. The IRS has the authority to initiate legal proceedings to collect outstanding taxes, which could result in a court judgment against the business. This judgment could further damage the company’s credit rating and ability to secure financing.

Pro tip

Consider using the IRS’s online payment agreement tool if you need more time to pay the amount due. This can help you establish a manageable payment plan and avoid further penalties.

Explanation of penalties due to unpaid corporate tax

The IRS imposes several types of penalties for unpaid corporate taxes, each with different implications. Understanding these penalties can help you determine the best course of action to resolve the issue.

Types of penalties

The main penalties that may be assessed on unpaid corporate taxes include:
  • Failure-to-pay penalty: This penalty applies if you do not pay the amount shown on your tax return by the due date. It is generally 0.5% of the unpaid taxes for each month or part of a month the tax remains unpaid, up to a maximum of 25% of the unpaid amount.
  • Failure-to-file penalty: If you fail to file your corporate tax return by the deadline, the IRS may impose a penalty of 5% of the unpaid taxes for each month or part of a month the return is late, up to a maximum of 25%.
  • Accuracy-related penalties: The IRS may assess penalties for substantial understatements of income tax or negligence in reporting. The penalty is typically 20% of the underpayment resulting from the error.

Interest on unpaid taxes

Interest on unpaid corporate taxes begins accruing from the original due date of the return until the taxes are paid in full. The IRS calculates interest based on the federal short-term interest rate plus 3%. This interest rate is subject to change quarterly.

Pro tip

Work with a tax professional to review your past tax returns if you frequently receive IRS notices. They can help identify patterns and recommend strategies to prevent future issues.

Steps to take when you receive letter 3391

Upon receiving Letter 3391, it is important to act promptly to avoid additional penalties and interest charges. Follow these steps to address the notice effectively:

1. Review the notice

Carefully read Letter 3391 to understand the nature of the tax liability, including the tax year involved, the amount due, and the reason for the notice. Ensure that the IRS’s calculations are correct by comparing the notice with your tax records.

2. Verify the accuracy of the IRS’s findings

Before taking any action, double-check your corporate tax records to ensure the IRS’s assessment is accurate. If you discover any discrepancies, you may need to provide supporting documentation to contest the notice.

3. Pay the amount due

If you agree with the IRS’s assessment, pay the amount due as soon as possible to minimize additional interest and penalties. The IRS provides several payment options, including electronic payments through the Electronic Federal Tax Payment System (EFTPS) or sending a check or money order.

4. Dispute the notice if necessary

If you disagree with the IRS’s findings, you have the right to dispute the notice. Follow the instructions provided in Letter 3391 to file an appeal or request a review of the assessment. Include all relevant documentation to support your case.

5. Seek professional help if needed

Consider consulting a tax professional, such as a certified public accountant (CPA) or tax attorney, if the situation is complex or if you are unsure how to proceed. They can help you navigate the appeals process or negotiate a payment plan.

Pro tip

Always double-check your tax records and financial statements before contacting the IRS about Letter 3391. Accurate information can help you resolve the issue faster and avoid unnecessary disputes.

How to avoid future penalties and IRS notices

Preventing future IRS notices and penalties requires diligent tax management and adherence to tax filing deadlines. Here are some strategies to help keep your business compliant:

1. File taxes on time

Ensure your corporate tax returns are filed by the deadline each year. If you need more time to prepare your return, file for an extension before the due date to avoid late-filing penalties.

2. Pay estimated taxes throughout the year

For businesses that expect to owe taxes, making estimated tax payments throughout the year can help avoid large tax bills and penalties. The IRS requires quarterly estimated tax payments if the business expects to owe $500 or more in corporate income tax for the year.

3. Keep accurate financial records

Maintaining detailed and accurate financial records can prevent discrepancies during tax filing and make it easier to substantiate deductions and income in case of an audit.

4. Work with a tax professional

Engaging a tax professional who understands corporate tax requirements can help your business stay compliant and reduce the risk of penalties.
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Frequently asked questions

What is IRS letter 3391?

IRS Letter 3391 is a notice informing businesses about unpaid corporate taxes and any associated penalties or interest. It serves as a demand for payment and outlines the consequences of failing to resolve the issue.

Can I appeal letter 3391?

Yes, you can appeal Letter 3391 if you disagree with the IRS’s assessment. Follow the instructions on the notice to file an appeal and provide supporting documentation.

What happens if I ignore letter 3391?

Ignoring Letter 3391 can lead to additional penalties, interest charges, and possible enforced collection actions, such as liens or levies on business assets.

How can I pay the amount due?

The IRS offers various payment options, including electronic payments through the Electronic Federal Tax Payment System (EFTPS), credit card payments, and traditional payment methods such as checks or money orders.

Potential outcomes after responding to letter 3391

If you pay the amount due

The IRS will update your account to reflect the payment, and any outstanding penalties or interest will stop accruing.

If you appeal successfully

The IRS may adjust the amount owed, waive certain penalties, or accept a payment plan.

If you do not respond

Failure to address Letter 3391 may lead to enforced collection actions, including garnishing wages, placing liens on business property, or levying bank accounts.
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

  • IRS Letter 3391 notifies businesses of unpaid corporate taxes and outlines the penalties and interest involved.
  • Responding quickly can prevent additional penalties and potential legal action.
  • You have the right to appeal the notice if you disagree with the IRS’s assessment.
  • Working with a tax professional can help resolve complex tax issues and avoid future penalties.

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