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Letter 1615 (LT18) Notice: Your Guide to Resolving Overdue Taxes

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Last updated 10/30/2024 by
SuperMoney Team
Fact checked by
Ante Mazalin
Summary:
The IRS Letter 1615 (LT18) is a notice issued to taxpayers who have not responded to previous requests for overdue tax returns. The letter urges immediate action, warning that failure to comply may lead to enforcement actions, such as levies on assets or wage garnishments. This comprehensive guide will walk you through understanding your LT18 notice, the actions you should take, potential consequences, and frequently asked questions to ensure you’re well-prepared to address the situation efficiently.
Receiving an IRS letter can be intimidating, especially if it involves unfiled tax returns. The LT18 notice, also known as Letter 1615, is a formal communication from the IRS notifying you that they have not received a response to their previous requests for overdue tax returns. Failing to address this notice can result in serious consequences, such as wage garnishment or levies on your bank account. In this article, we’ll explain what the LT18 notice is, why you may have received it, and the steps you need to take to resolve the issue promptly.

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What is the LT18 notice?

The LT18 notice (Letter 1615) is a follow-up letter sent by the IRS after it has attempted multiple times to request overdue tax returns from you. This letter indicates that the IRS has yet to receive a response or the required filings from you. At this stage, the IRS escalates its enforcement efforts and may initiate collection actions, such as garnishing wages or levying your assets if the returns remain unfiled.
The notice is typically sent to taxpayers who have multiple years of unfiled returns, and it’s a signal that the IRS is getting ready to take stronger actions if the situation is not rectified.
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.

Why did I receive the LT18 notice?

There are several reasons you may have received the LT18 notice:
  • Failure to file tax returns: The most common reason is that you haven’t filed tax returns for one or more years, despite previous reminders.
  • Incorrect or incomplete returns: If your previous filings were incomplete or incorrect, the IRS may have flagged them and requested corrections.
  • Communication issues: Sometimes, the notice is triggered if the IRS did not receive or process your response to previous requests, possibly due to postal errors or delays in processing.
In any case, receiving this letter means the IRS is close to taking serious actions against you if you don’t comply.

Pro Tip

Set up IRS account alerts online to get real-time notifications on any changes to your tax return or account. This helps you stay updated on adjustments and due dates.

How to respond to an LT18 notice

Once you receive an LT18 notice, it is essential to act quickly to avoid further IRS enforcement actions. Here are the steps to follow:

Read the notice carefully

Go through the notice thoroughly to understand what the IRS is requesting. Look at the tax years in question and any instructions provided on how to submit the missing tax returns. Ensure you comply with the deadlines mentioned in the notice to prevent penalties.

File the overdue tax returns

If the notice is a result of unfiled tax returns, gather your financial documents and file the missing returns as soon as possible. Use the address provided in the LT18 notice to submit the returns. Typically, you have 10 days from the date on the notice to respond.

Contact the IRS if necessary

If you believe there has been a mistake or if you already filed the returns, contact the IRS using the toll-free number provided in the notice. Be prepared to offer proof, such as a certified mailing receipt, to confirm that you previously sent the tax return.

Seek professional tax assistance

If you’re unsure how to handle the notice or if you have complex tax issues, consider consulting a tax professional. A CPA or tax attorney can help you address the notice effectively and communicate with the IRS on your behalf.

Consequences of not responding to an LT18 notice

Ignoring the LT18 notice can have serious repercussions. Here’s what could happen if you don’t take action:
  • Wage garnishments: The IRS may garnish your wages, taking a portion of your paycheck until the tax debt is resolved.
  • Bank levies: The IRS could levy your bank accounts, seizing funds to cover your unpaid tax obligations.
  • Liens on property: A federal tax lien may be placed on your property, which could affect your ability to sell or refinance real estate.
  • Additional penalties and interest: The longer your taxes remain unpaid, the more penalties and interest accrue, increasing your overall debt.
To avoid these consequences, it is critical to respond to the notice promptly and take steps to resolve your tax situation.

Pro Tip

If you can’t pay your tax debt immediately, apply for a payment plan through the IRS website. This can help you avoid more severe collection actions, like wage garnishment.

What happens after you file the overdue returns?

After you file the overdue tax returns, the IRS will process them. If you owe taxes, you will receive a bill for the unpaid amount, plus any penalties and interest. If you’re unable to pay the full amount, the IRS offers payment plans or options to settle the debt for less than the full amount owed.

Payment plans

If you cannot pay your tax debt in full, you can set up a payment plan with the IRS. This allows you to pay off your debt in monthly installments over time.

Offer in compromise

In some cases, the IRS may accept an Offer in Compromise (OIC), allowing you to settle your tax debt for less than the amount you owe. This option is generally available for taxpayers who cannot pay their full tax debt without causing financial hardship.

Pro Tip

If you can’t pay your tax debt immediately, apply for a payment plan through the IRS website. This can help you avoid more severe collection actions, like wage garnishment.

Seeking professional help

If you are unsure how to handle the LT18 notice or have complex tax issues, seeking professional help is highly recommended. A certified public accountant (CPA) or tax attorney can guide you through the process and represent you when dealing with the IRS. Here are some reasons why professional assistance might be beneficial:
  • Expertise in tax law: Tax professionals are well-versed in the latest tax regulations and can help you understand your obligations while ensuring compliance with IRS rules.
  • Efficient filing: They can help you file overdue tax returns accurately and efficiently, minimizing the risk of errors or delays.
  • Negotiating with the IRS: If you owe taxes and cannot pay in full, a tax professional can negotiate a payment plan or an Offer in Compromise on your behalf, potentially reducing the amount you owe.
  • Dealing with penalties: In some cases, tax professionals can help reduce penalties by explaining your situation to the IRS and exploring penalty abatement options.
Hiring a tax expert can save you time, reduce stress, and help you avoid costly mistakes when dealing with the IRS. It’s particularly useful if you have multiple years of unfiled returns or if you are facing significant penalties.
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 is the LT18 notice, and why did I receive it?

The LT18 notice is sent by the IRS to inform taxpayers that they have overdue tax returns. If you have not filed tax returns for the years requested, or if the IRS did not receive your previously filed returns, you may receive this notice. It is essentially a final warning before the IRS takes more aggressive actions, such as levying your assets or garnishing your wages.

What happens if I don’t respond to the LT18 notice?

Ignoring the LT18 notice can lead to severe consequences. The IRS may begin enforcing collection actions, including wage garnishments, bank levies, or even placing liens on your property. Additionally, interest and penalties will continue to accrue on your unpaid taxes, further increasing the amount you owe.

How can I avoid IRS enforcement actions after receiving an LT18 notice?

To avoid IRS enforcement actions, respond to the LT18 notice immediately by filing your overdue tax returns. If you believe the notice was sent in error, contact the IRS at the number listed on the letter and provide evidence, such as proof of mailing your previous returns. Filing promptly and contacting the IRS will help prevent escalations such as asset levies or wage garnishments.

What if I can’t afford to pay the taxes I owe after filing my returns?

If you are unable to pay the full amount of taxes owed, the IRS offers several options. You can set up a payment plan to pay your taxes in monthly installments. In certain situations, you may qualify for an Offer in Compromise, which allows you to settle your tax debt for less than the total amount owed. Contact the IRS or consult a tax professional to determine the best option for your situation.

Can I get professional help to deal with the LT18 notice?

Yes, you can seek assistance from a certified tax professional, such as a CPA or tax attorney, who can help you handle the LT18 notice and communicate with the IRS on your behalf. Tax professionals are especially useful if you have complex tax issues or need help navigating payment options or resolving potential errors in your tax filings.
Need help understanding other IRS letters and notices? Visit our comprehensive guide to IRS Letters and Notices or search for the document you received in the table below.
IRS Letter or Notice Number
Notice Description
CP01The IRS verified your claim of identity theft and will monitor your account.
CP01HThe IRS received a tax return with a social security number that belongs to a dead person.
CP02HMoney is due on an amended return based on a grant received due to Hurricane Katrina, Rita, or Wilma.
CP03CYou received the First-Time Homebuyer Credit for a house you purchased.
CP04You may be eligible for tax deferment because either you or a spouse served in a combat zone, a qualified contingency operation, or a hazardous duty station during the tax year specified on your notice.
CP08You may be entitled to additional money due to the Additional Child Tax Credit.
CP10Your tax return changed due to a miscalculation, and the refund you wanted to apply to an estimated tax payment has changed.
CP10AYour tax return changed due to a miscalculation of the Earned Income Credit, and the refund you wanted to apply to an estimated tax payment has changed.
CP11You owe money because the IRS amended your return due to a miscalculation.
CP11AYour tax return changed due to a miscalculation of the Earned Income Credit, and the refund you wanted to apply to an estimated tax payment also changed.
CP11MYour tax return changed due to a miscalculation of the Making Work Pay and Government Retiree Credit, and the refund you wanted to apply to an estimated tax payment has changed.
CP12You are due a bigger refund because the IRS corrected one or more mistakes on your tax return.
CP12AThe IRS made changes to correct the Earned Income Credit (EIC) claimed on your tax return.
CP12E or CP12FThe IRS corrected a miscalculation on your return.
CP12MThe IRS made changes to the computation of the Making Work Pay and/or Government Retiree Credits on your return.
CP12RThe IRS made changes to the computation of the Rebate Recovery Credit on your return.
CP13The IRS made changes to your return due to a miscalculation. There is no refund or amount due. Your balance is zero.
CP13AThe IRS made changes to your return due to a miscalculation of the Earned Income Credit. There is no refund or amount due. Your balance is zero.
CP13MThe IRS made changes to your return due to a miscalculation of the Making Work Pay credit or the Government Retiree Credit. There is no refund or amount due. Your balance is zero.
CP13RThe IRS made changes to your return due to a miscalculation of the Recovery Rebate Credit. There is no refund or amount due. Your balance is zero.
CP14You owe money on unpaid taxes.
CP16The IRS made changes to your return due to a miscalculation. The refund you were due was applied to other tax debts.
CP21AYou owe money due to the changes you requested that the IRS make on your tax returns.
CP21BYou are due a refund due to the changes you requested that the IRS make on your tax returns. The money should arrive within 2 to 3 weeks.
CP21CThe IRS made the requested changes to your tax return. You will not receive a refund, and there is no tax due. Your balance is zero.
CP21EAs a result of your recent audit, the IRS made changes to your tax return, and you owe money as a result of those changes.
CP21IThe IRS made changes to your tax return relating to the Individual Retirement Arrangement (IRA) taxes. You owe money due to the changes.
CP22AThe IRS made the changes you requested, and you owe money as a result.
CP22EAs a result of your recent audit, the IRS changed your tax return, and you now owe money.
CP22IThe IRS made changes to your tax return relating to the Individual Retirement Arrangement (IRA) taxes. You owe money due to the changes.
CP23The IRS changed your return because there was a difference between the amount of estimated tax payments listed on your tax return and the amount actually posted to your account. You owe taxes due to these changes.
CP24The IRS changed your return because there was a difference between the amount of estimated tax payments listed on your tax return and the amount actually posted to your account. This resulted in an overpayment of estimated taxes.
CP24EThe IRS changed your return because there was a difference between the amount of estimated tax payments listed on your tax return and the amount actually posted to your account. This resulted in an overpayment of estimated taxes.
CP25The IRS changed your return because there was a difference between the amount of estimated tax payments listed on your tax return and the amount actually posted to your account. You are not due a refund, nor do you owe any money. Your balance is zero.
CP31You need to update your address because your refund check was returned to the IRS.
CP45The IRS was unable to apply your overpayment to your estimated tax as you requested.
CP49The IRS used all or part of your refund to pay a tax debt.
CP53Your refund check will be sent by mail because the IRS can’t provide your refund through direct deposit.
CP57The bank declined your payment, so the IRS was unable to draft funds from your bank account.
CP71A reminder of the amount you owe in tax, penalty, and interest.
CP71AA reminder of the amount you owe in tax, penalty, and interest.
CP71CA reminder of the amount you owe in tax, penalty, and interest.
CP71DA reminder of the amount you owe in tax, penalty, and interest.
CP88The IRS is holding your refund because you haven't filed one or more tax returns, and it believes you will owe tax.
CP90The IRS is notifying you of its intent to levy certain assets for unpaid taxes. You have the right to dispute the levy in a Collection Due Process hearing.
CP91The IRS will levy up to 15% of your social security benefits for unpaid taxes.
CP120The IRS needs documentation of your tax-exempt status.
CP120AYour organization’s tax-exempt status has been revoked because it failed to file a Form 990 series return for three consecutive years.
CP130You may no longer need to pay the Alternative Minimum Tax (AMT) because your tax return filing requirements changed.
CP152The IRS received your return.
CP153The IRS will send your refund by mail because your direct deposit did not go through.
CP161You have an unpaid balance due to the IRS.
CP166Your monthly payment to the IRS did not go through due to insufficient funds in your bank account.
CP178You may no longer owe excise tax because your tax return filing requirements changed.
CP231You need to update your address because your refund was returned to the IRS.
CP259You did not file the business tax return identified in the notice.
CP259AYou should have filed these forms but did not – Form 990/990-EZ, Return of Organization Exempt From Income Tax, or Form 990-N (e-Postcard).
CP259BThe IRS requires you to file these forms but did not – Form 990-PF, Return of Private Foundation or Section 4947(a)(1) Nonexempt Charitable Trust Treated as a Private Foundation.
CP259CThe IRS believes that you are a private foundation, but did not file the required Form 990-PF, Return of Private Foundation or Section 4947(a)(1) Nonexempt Charitable Trust Treated as a Private Foundation.
CP259DYou must file this form, but you did not – Form 990-T, Exempt Organization Business Income Tax Return.
CP259EYou should have filed this form, but you did not – Form 990-N (e-Postcard) or Form 990/990-EZ, Return of Organization Exempt From Income Tax.
CP259FThe IRS requires you to file this form but did not – Form 5227, Split-Interest Trust Information Return.
CP259GThe IRS requires you to file this form, but you didn’t – Form 1120-POL, U.S. Income Tax Return for Certain Political Organizations.
CP259HAs a tax-exempt political organization, you must file this form, but you did not – Form 990/990-EZ, Return of Organization Exempt From Income Tax.
CP276AYou submitted your tax liability schedule incorrectly. The IRS typically charges a Federal Tax Deposit (FTD) penalty for this but did not this time.
CP276BThe IRS did not receive the correct amount of tax deposits. It normally charges a Federal Tax Deposit (FTD) penalty but did not this time.
CP297The IRS is notifying you of its intent to levy certain assets for unpaid taxes. You have the right to dispute the levy at a Collection Due Process hearing.
CP297AThe IRS has levied your assets for unpaid taxes. You have the right to dispute the levy at a Collection Due Process hearing.
CP298The IRS notifying you of its intent to levy up to 15% of your social security benefits for unpaid taxes.
CP501You have a balance due on one of your tax accounts.
CP503You have an unpaid balance on one of your accounts, and the IRS has not heard from you.
CP504You have an unpaid amount due on your account. If you do not pay immediately, the IRS will levy your state income tax refund to apply it to the amount you owe.
CP504BYou have an unpaid amount due on your account. If you do not pay immediately, the IRS will levy certain property or rights to property to apply it to the amount you owe.
CP521A reminder that you have an installment agreement payment due.
CP523You have defaulted on your payment agreement. Therefore the IRS is terminating the agreement and will levy your assets.
CP601Usted tiene un saldo pendiente de pago (dinero que le debe al IRS) en una de sus cuentas contributivas.
CP603No hemos recibido respuesta de parte de usted y todavía tiene un saldo sin pagar en una de sus cuentas contributivas.
CP604Usted tiene un saldo sin pagar en su cuenta. De no pagar esta cantidad inmediatemente, el IRS embargará cualquier reembolso de impuestos estatales al que tenga derecho y aplicarlo al pago de su deuda.
CP604BUsted tiene un saldo sin pagar en su cuenta. De no pagar esta cantidad inmediatemente, el IRS embargará ciertas propiedades o derechos de propiedad y lo aplicará al pago de su deuda.
CP621Este aviso es para notificarle que usted tiene un plan de pagos a plazos vencido. Por favor, envíe el pago inmediatamente.
CP623Este aviso es para informarle nuestra intención de cancelar su plan de pagos a plazos y confiscar (embargar) sus bienes. Usted incumplió en su acuerdo.
CP711Nosotros realizamos cambios a su planilla debido a que entendemos que hubo un cálculo erróneo. Como resultado de estos cambios, usted adeuda dinero por sus contribuciones.
CP721Hicimos el(los) cambio(s) que usted solicitó a su declaración de impuestos para el año tributario que aparece en su aviso. Como resultado de éste(estos) cambio(s) usted debe dinero en sus impuestos.
CP722Hicimos el(los) cambio(s) que usted solicitó a su declaración de impuestos para el año tributario que aparece en su aviso. Como resultado de éste(estos) cambio(s) usted debe dinero en sus impuestos.
CP771Usted recibió este aviso para recordarle sobre la cantidad que adeuda en contribuciones, multas e intereses.
CP772Usted recibió este aviso para recordarle sobre la cantidad que adeuda en contribuciones, multas e intereses.
CP773Usted recibió este aviso para recordarle sobre la cantidad que adeuda en contribuciones, multas e intereses.
CP774Usted recibió este aviso para recordarle sobre la cantidad que adeuda en contribuciones, multas e intereses.
CP959Usted no radicó su planilla de contribución de negocios identificada en este aviso.
CP2000The income or payment information on file doesn’t match your tax return. The discrepancy may result in an increase or decrease in your tax due.
CP3219AThe IRS has received information that is different from what you reported on your tax return. This may result in an increase or decrease in your tax.
CP3219NThe IRS didn’t receive your tax return, so it calculated your return based on the information received from employers, financial institutions, and others. If you want to challenge the proposed tax, you have 90 days from the date of this notice. If you are outside the country, you have 150 days.
Letter 0012CThe IRS needs additional information to process your tax return.
Letter 0484CThe IRS wants a completed
Letter 0525Updates you on proposed changes after an IRS examination. Any changes are explained and details the refund due or taxes owed.
Letter 531IRS Notice of Deficiency. The information the IRS received about you was different from what you reported on your return.
Letter 0668D(LP 68)The IRS released their levy.
Letter 0549CYour tax bill was paid.
Letter 0681CThe IRS accepted your payment proposal. However, this is not a formal Installment Agreement.
Letter 0757CYou did not adhere to the terms of your Installment Agreement.
Letter LT 11The IRS plans to seize your property or rights to property.
Letter 1058The IRS has not received your payment. It plans to seize your property or rights to property.
Letter 1615 (LT 18)You must respond to the IRS within 10 days of this notice regarding past due tax returns.
Letter 1737 (LT 27)Complete and sign Form 433F, Collection Information Statement.
Letter 1961CYour application for a Direct Debit Installment Agreement was declined. It explains why and what you need to do to qualify.
Letter 1962CYour application for a
Letter 2050 (LT 16)The IRS is trying to collect unpaid taxes from you from returns that have been filed or from returns that have not been filed.
Letter 2257CThe IRS is providing the payoff amount that you requested.
Letter 226-JAn IRS letter to large employers notifying them that they may be liable for an Employer Shared Responsibility Payment (ESRP).
Letter 2271CA request for an Installment Agreement has been approved. It explains the fees and how to qualify for a Low Income Fee Reduction. The letter may also request missing information.
Letter 2272CAn IRS letter explaining why your request to pay the balance due in installments was declined.
Letter 2273CA confirmation letter of your request to pay the balance due in installments. It contained the amount to pay, fees charged, and where to send payment. Instructions on how to apply for the Low Income Fee Reduction included.
Letter 2318CA response to a request to pay taxes due to payroll deductions. It also explains the fees that are charged.
Letter 2357CThe IRS is admitting that it did not send you the balance due notices that it should have.
Letter 2603CThe IRS accepted your installment agreement. The IRS will file a Notice of Federal Tax Lien on your personal property.
Letter 2604CThe IRS has accepted your request for installment payments. This IRS letter provides the monthly payment, the address where to send it, and the fees charged. The letter also provides instructions on how to apply for the Low Income Fee Reduction.
Letter 2761CThe IRS is requesting your combat zone service dates to ensure that it provides you with the special provisions and protection of the combat zone deferment. Copies of military orders or other documentation to support your time served may be requested. Civilians working in support of the Armed Forces may be required to provide a Letter of Authorization or a letter from their employer.
Letter 2789CAn annual reminder notice, as required by law, of the balance due to the IRS. It explains that penalties and interest continue to accrue until the balance is fully paid.
Letter 2840CConfirms your Installment Agreement request and includes the payment amount and due date. This IRS letter explains the fees charged for paying monthly and explains how to apply for the Low Income Fee Reduction (if you qualify).
Letter 3030CProvides an explanation of the tax, penalty, and interest still due on your account.
Letter 3127CA confirmation of your request to make a change to your Installment Agreement. This IRS letter explains the fees for the change. Changes can be to the payment amount or due date, or it can include additional liabilities.
Letter 3174A reminder of taxes due after the IRS has sent a Notice of Intent to Levy.
Letter 3217CThe IRS has accepted your request to pay the balance in installments. This IRS letter provides your payment amount, the due date, and fees charged. The letter also provides instructions on applying for the Low Income Fee Reduction (if you qualify).
Letter 3228 (LT 39)A request to pay the balance due within 10 days using the envelope provided.
Letter 3500The IRS has received your documents, and it needs additional time to review them.
Letter 3572Your Federal Income Tax Return has been selected for examination. The IRS auditor requests that you call to schedule an audit appointment.
Letter 4883CThe IRS received your federal income tax return but needs more information to verify your identity in order to process your tax return accurately.
Letter 4903 (LT 26)You must file your tax returns immediately. The IRS has previously contacted you, but it did not receive a response.
Letter LP 47The IRS is trying to locate the person identified in the letter and is requesting that you provide their new address.
Letter LP 59The IRS has not received a response to the notice of levy it previously sent.
Audit Letter 2205The IRS manages audits either by mail or through an in-person interview to review your records. The interview may be at an IRS office (office audit) or the taxpayer’s home, place of business, or accountant’s office (field audit).
Letter 915You recently underwent an audit, and the IRS informs you that you now owe taxes.

Key takeaways

  • The LT18 notice is a warning from the IRS about overdue tax returns and pending enforcement actions.
  • If you receive an LT18 notice, file your missing returns immediately to avoid wage garnishments or asset levies.
  • Contact the IRS if you believe you already filed or don’t owe taxes for the period in question.
  • Ignoring the notice can lead to serious consequences, including penalties, interest, and enforcement actions.
  • Professional tax help can guide you through resolving your LT18 notice and help avoid further complications.

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