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CP621 Notice: What It Means for Your IRS Installment Plan

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Last updated 11/01/2024 by
SuperMoney Team
Fact checked by
Ante Mazalin
Summary:
The IRS CP621 Notice is sent to taxpayers to inform them of a delinquent installment payment plan. If you receive this notice, it means your installment agreement with the IRS is overdue, and immediate action is needed to avoid penalties or enforcement actions. This article will guide you on what the CP621 Notice means, what steps to take, and how to prevent future issues.
Receiving a notice from the IRS can be unsettling, especially when it informs you that your payment plan is past due. The CP621 Notice, specifically, alerts taxpayers that their installment agreement payments are overdue and requires immediate attention. Failing to act promptly can result in penalties, interest charges, or even more severe enforcement actions. This article will provide an in-depth understanding of the CP621 Notice, how it impacts you, and the steps you need to take to resolve the issue and get your payment plan back on track.
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 a CP621 Notice?

The CP621 Notice is an official notification from the IRS that informs taxpayers about a delinquent installment payment plan. Typically, the IRS sends this notice when a taxpayer fails to meet the agreed-upon terms of their installment agreement. These agreements are commonly established to allow taxpayers to pay off their tax debts over time, rather than in a single lump sum.
The CP621 serves as a formal reminder that one or more payments are past due. It urges the taxpayer to take immediate action to bring their account current, warning of potential penalties or interest charges if no steps are taken. It’s important to note that continuing to ignore this notice can lead to the cancellation of the installment agreement and the possibility of enforced collection actions, such as wage garnishment or a bank levy.

Why did I receive this notice?

There are several reasons why you may receive a CP621 Notice:
  • Missed Payment: The most common reason is missing a scheduled payment in your installment agreement.
  • Partial Payment: If you made a payment that was less than the required amount, the IRS may consider your installment agreement as delinquent.
  • Delayed Payment: Sometimes, delays in payment processing can trigger this notice, even if you believe you paid on time. It’s essential to confirm that your payment reached the IRS by the due date.
The notice is designed to inform you of the situation and encourage prompt resolution to avoid further penalties or complications with your account.

How does the CP621 Notice affect you?

The CP621 Notice has significant implications for your financial relationship with the IRS. Here’s how it affects you:

Potential Penalties

Failing to respond to the CP621 Notice in a timely manner can lead to penalties, such as:
  • Interest on unpaid balances: Interest accrues on any unpaid tax debts, which will increase the overall amount you owe.
  • Late payment penalties: If you miss a payment deadline, the IRS may impose additional penalties, further complicating your financial situation.
  • Termination of your installment agreement: Continued delinquency may result in the IRS terminating your installment agreement, leaving you responsible for the full debt immediately.

Risk of Enforcement Actions

If the situation is not resolved, the IRS may resort to enforced collection actions, which could include:
  • Wage garnishment: The IRS could garnish a portion of your wages to satisfy the debt.
  • Bank levies: The IRS can seize funds directly from your bank accounts to cover unpaid taxes.
  • Tax liens: The IRS may place a lien on your property, affecting your ability to sell or refinance assets.

Credit Impact

While IRS actions such as wage garnishment or tax liens won’t directly affect your credit score, the public record of a lien can be visible to lenders, potentially affecting your ability to secure loans or credit in the future.

Pro tips

Always keep records of your IRS payments and correspondence. If you receive a CP621 Notice, having proof of past payments can help resolve issues faster and avoid penalties.

What should you do when you receive a CP621 Notice?

Upon receiving a CP621 Notice, it’s important to act promptly to prevent further complications. Here’s what you should do:

Step 1: Review the Notice Carefully

First, read through the notice to fully understand why the IRS is contacting you. The notice will detail the amount that is overdue, the date the payment was due, and the total balance remaining on your account.

Step 2: Verify Your Payment Status

Next, check your records to confirm whether or not you made the payment that the IRS says is overdue. If you believe there’s been an error, cross-reference your bank statements or payment records to ensure the payment was sent on time.

Step 3: Contact the IRS

If you identify any discrepancies in your payment records, contact the IRS immediately using the contact information provided on the CP621 Notice. It’s important to resolve any misunderstandings and clarify your payment status with them.

Step 4: Make a Payment

If you missed the payment or paid less than the required amount, submit the overdue payment as soon as possible. The notice will provide instructions on how to make your payment, which can typically be done via mail, online, or by phone.

Step 5: Modify Your Installment Agreement if Needed

If your financial situation has changed and you’re unable to make the required payments, you may want to consider modifying your installment agreement. Contact the IRS to explore options for a revised payment plan that better suits your current financial situation.

Pro tips

If your financial situation changes, don’t wait for a CP621 Notice. Contact the IRS as soon as possible to adjust your installment plan to avoid falling behind on payments.

How to respond to the CP621 Notice

Steps to take when responding to a CP621 Notice

Responding to a CP621 Notice promptly is crucial. Here’s a step-by-step guide on how to handle this notice:
  1. Assess the situation: Review the notice to understand how much you owe and the consequences of failing to make the payment.
  2. Gather documentation: Collect all relevant documentation, including proof of past payments or any correspondence with the IRS, to support your case.
  3. Make the overdue payment: If you can, immediately make the overdue payment following the instructions on the notice. You can pay online, by mail, or by phone.
  4. Contact the IRS: If you’re unable to make the full payment, contact the IRS to discuss your options. They may offer an extension or adjust your payment plan based on your financial situation.
  5. Confirm resolution: After making the payment or reaching an agreement with the IRS, ensure you receive confirmation that your installment plan is back in good standing.

Alternative Solutions for Payment Delinquencies

In some cases, taxpayers may be unable to make the required payments due to unforeseen financial hardships. Here are a few alternatives:
  • Offer in Compromise (OIC): The IRS may accept a reduced amount if you can prove that paying the full debt would cause undue hardship.
  • Temporary delay in collection: If you’re experiencing financial difficulties, you can request that the IRS temporarily delay collection efforts. While this won’t eliminate your debt, it will give you time to resolve your financial situation.
  • Hardship program: Taxpayers facing extreme financial hardship may qualify for the IRS hardship program, which can halt collections temporarily until your situation improves.

Further support options for addressing the CP621 Notice

If you’re uncertain about how to proceed after receiving a CP621 Notice, there are resources available to help you resolve the issue:
  • IRS Helpline: Call the number provided in the notice for direct assistance with your account.
  • Certified Tax Professional: Consulting a CPA or tax attorney can provide expert guidance and help you navigate the process.
  • Taxpayer Advocate Service (TAS): The TAS is an independent organization within the IRS that helps taxpayers resolve problems with the agency.
  • Local IRS Office: Visiting a local IRS office in person may expedite the resolution process.

Pro tips

Consider consulting a tax professional or CPA if you receive a CP621 Notice. They can help negotiate better terms with the IRS and ensure that your payments are managed correctly.

Potential consequences if you don’t respond to the CP621 Notice

Ignoring a CP621 Notice can have serious consequences. Here’s what may happen if you don’t take action:

Termination of the Installment Agreement

The IRS may cancel your installment agreement if payments are not made on time. This will result in the full balance of your debt becoming due immediately.

Additional Penalties and Interest

Interest and penalties will continue to accrue on the unpaid balance, making it harder to settle your tax debt over time.

Enforced Collection Actions

If you fail to address the delinquency, the IRS may initiate collection actions such as wage garnishment, bank levies, or placing liens on your property. These actions can have a significant impact on your finances and credit.

What outcomes are possible after responding to the CP621 Notice?

If you respond to the CP621 Notice promptly, several positive outcomes are possible:
  • If you make the overdue payment: Your installment agreement will be restored, and you can continue making payments as agreed.
  • If the IRS finds an error: If there was a mistake in their records, the IRS may correct the error and reinstate your payment plan without penalties.
  • If you modify your installment agreement: You may be able to adjust your payment schedule to fit your financial situation, allowing you to stay on track without further penalties or complications.

Additional Support Options

If you’re unable to pay the overdue balance or need further help, the IRS offers several avenues to ensure you can manage your tax obligations:
  • Hardship Deferral: The IRS may temporarily delay collection if you can prove you’re experiencing significant financial hardship. This won’t eliminate your debt but may provide breathing room.
  • Offer in Compromise (OIC): In cases of severe financial difficulty, you might be eligible for an Offer in Compromise, where the IRS agrees to accept a lesser amount than the total owed.
  • Taxpayer Advocate Service (TAS): If you’re facing unusual financial hardship or feel that IRS procedures are causing undue problems, TAS can act as a mediator between you and the IRS.

Long-Term Impact of Resolving a CP621 Notice

Responding to a CP621 Notice promptly can prevent complications in future dealings with the IRS. Once your payment plan is back in good standing, you’ll avoid additional interest and penalties, and enforcement actions will cease. This resolution also helps maintain a positive financial record with the IRS, ensuring smoother tax filings and interactions in the future.
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Frequently asked questions

Why did I receive a CP621 Notice?

You received the CP621 Notice because your IRS installment payment plan is overdue. The IRS sends this notice to inform you that one or more payments have not been made on time and require immediate attention to avoid penalties or cancellation of the agreement.

What happens if I ignore the CP621 Notice?

Ignoring a CP621 Notice can lead to severe consequences, such as the termination of your installment agreement, penalties, interest, and enforced collection actions like wage garnishment or bank levies. The IRS may also place a lien on your property, which could affect your ability to sell or refinance assets.

How can I resolve a CP621 Notice?

To resolve the notice, verify if the missed payment was made or if it was an error. If you owe the amount indicated, pay it immediately following the instructions in the notice. If you’re experiencing financial difficulties, contact the IRS to discuss modifying your payment plan or applying for alternative options such as an Offer in Compromise or hardship deferral.

Can I negotiate with the IRS if I can’t pay?

Yes, the IRS offers several programs for taxpayers facing financial hardships, such as modifying your installment agreement, requesting a temporary delay in collection, or applying for an Offer in Compromise, which allows you to settle your tax debt for less than the total amount owed.

Can I resolve a CP621 Notice online?

In some cases, you may be able to make payments or modify your installment agreement online through the IRS website. However, for more complex situations, such as requesting an Offer in Compromise or proving hardship, you’ll need to contact the IRS directly or seek help from a tax professional.
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 CP621 Notice is sent when a taxpayer’s IRS installment agreement is overdue, requiring immediate action.
  • Failure to respond can result in penalties, interest, or enforced collection actions like wage garnishment or bank levies.
  • To resolve the issue, review your payment records, make the overdue payment, or contact the IRS to modify your installment agreement.
  • Ignoring the notice can lead to the cancellation of the installment agreement and may trigger severe financial consequences.

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