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How to Respond to a CP501K Notice

Silas Bamigbola avatar image
Last updated 10/30/2024 by
Silas Bamigbola
Fact checked by
Ante Mazalin
Summary:
The IRS CP501K Notice is issued to taxpayers to remind them of an outstanding balance due on their tax account. It outlines the amount owed, provides instructions for payment, and offers options for those who cannot pay the full amount immediately. Quick action is necessary to avoid accruing interest, penalties, or enforcement actions like tax liens. This guide will walk you through understanding the CP501K notice and the steps to take in response.
Receiving an IRS notice can cause anxiety, especially when it’s about money owed to the government. The CP501K notice informs taxpayers that they have a balance due on their account, reminding them to pay it as soon as possible to avoid further consequences. If you’ve received a CP501K notice, understanding what it means and how to respond is critical. In this guide, we’ll explain what the notice entails, how to address it, and what happens if you don’t take action.

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What is the CP501K IRS notice?

The CP501K IRS Notice is an official reminder from the IRS that you owe money on one of your tax accounts. It is typically sent after previous communications have been ignored or after a payment was missed. The notice informs you about the outstanding balance, including the original tax amount, any accrued penalties, and interest. This notice is an opportunity to resolve your debt before the IRS takes more serious actions, such as filing a federal tax lien or levying your bank account.

Pro Tip

Always keep copies of IRS notices and payment confirmations in a secure place. This documentation will help you quickly resolve disputes or errors with the IRS.

Details included in the CP501K notice

  • Balance due: The total amount you owe, which includes the original tax debt plus any accrued interest and penalties.
  • Due date: The deadline by which the IRS expects payment or an arrangement to be made.
  • Payment options: The notice outlines how you can make a payment, including online payment methods or by mail.
  • Contact information: The notice will include a toll-free number for contacting the IRS if you have questions or disputes.
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Why did you receive a CP501K notice?

The CP501K notice is typically sent when you have an unpaid balance on your tax account, and previous attempts by the IRS to collect this debt have been unsuccessful. Common reasons you might receive this notice include:
  • Underpayment: You didn’t pay the full amount of taxes owed for a given year.
  • Adjustment to your return: The IRS reviewed your return and determined that additional taxes are due.
  • Missed payment deadlines: You failed to make a payment by the deadline or missed an installment plan payment.
  • Disputed amounts: You may disagree with the IRS about your tax liability but have not yet resolved the issue.

What should you do when you receive a CP501K notice?

Upon receiving a CP501K notice, it is important to take immediate action. Delaying your response can result in more significant consequences, including additional penalties and possible enforcement actions by the IRS. Here are the steps you should follow:

1. Review the notice thoroughly

The first step is to carefully read the CP501K notice to ensure you understand how much you owe and what actions the IRS expects you to take. The notice will include a breakdown of the amount due, including taxes, penalties, and interest. It will also detail the consequences if the payment is not made by the due date.

2. Verify the information

Before taking any further steps, double-check the accuracy of the information. Review your previous tax returns and financial records to ensure the balance the IRS claims you owe is correct. If you believe there is an error, you should contact the IRS immediately to dispute the balance.

3. Pay the balance in full

If the amount is accurate and you have the means, it’s best to pay the full balance as soon as possible to stop interest from accruing. You can make a payment through several methods:
  • Online Payment: The IRS offers a secure online portal where you can pay using a bank account or credit card.
  • Check or Money Order: If you prefer, you can mail a check or money order using the instructions provided in the notice.
  • Direct Debit: Setting up a direct debit payment plan allows you to make payments automatically from your bank account.

4. Set up a payment plan if you can’t pay in full

If you cannot afford to pay the full balance immediately, the IRS offers several payment options, including installment agreements. These agreements allow you to pay the balance over time, with added interest. To request a payment plan, you can apply online through the IRS Online Payment Agreement tool or by mailing a request for an installment agreement to the IRS.

5. Contact the IRS if you disagree with the amount

If you believe the amount shown on the CP501K notice is incorrect, it’s critical to contact the IRS as soon as possible. The notice will include a toll-free number that you can call to discuss the details of your account. Be prepared to provide documentation, such as copies of previous tax returns or canceled checks, to support your case. Resolving the issue early can prevent further penalties and collection actions.

Pro Tip

If you can’t pay your balance in full, request an installment plan as soon as possible to avoid penalties and interest charges from accumulating further.

What happens if you don’t respond to a CP501K notice?

Ignoring a CP501K notice can lead to serious consequences. If you do not pay the balance, set up a payment plan, or contact the IRS, the following actions may occur:
  • Accrual of penalties and interest: The IRS will continue to add interest and penalties to your account until the balance is paid.
  • Federal tax lien: The IRS may file a federal tax lien, which can affect your ability to sell property or obtain credit.
  • Enforcement actions: In extreme cases, the IRS may garnish your wages or levy your bank account to collect the balance due.
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Frequently asked questions

What happens if I can’t pay the full amount by the due date?

If you cannot pay the full amount by the due date, you have the option to set up a payment plan with the IRS. Installment plans allow you to pay your tax debt over time, which helps avoid more serious collection actions. You can apply for a payment plan online through the IRS’s Online Payment Agreement tool or by mailing a request for an installment agreement using the instructions in your CP501K notice.

Will ignoring the CP501K notice affect my credit score?

The IRS does not directly report tax debt to credit bureaus, so the notice itself will not affect your credit score. However, if the IRS files a federal tax lien due to unpaid taxes, that information becomes public and may be picked up by credit reporting agencies, negatively impacting your credit score. It is crucial to address the notice quickly to avoid these actions.

How can I check my IRS tax account balance?

You can easily check your IRS tax account balance by logging into the IRS Online Account portal. This tool allows you to view your account information, including the amount you owe, payment history, and payment options. It also provides access to download IRS notices, including the CP501K, and manage your communication preferences with the IRS.

Can I dispute penalties and interest if I pay late?

If you believe there is a reasonable cause for paying your taxes late (such as a medical emergency or financial hardship), you can request penalty abatement from the IRS. The IRS will review your request and may reduce or eliminate penalties based on the circumstances. Interest, however, is generally not waived. You must continue to pay interest until the tax debt is fully settled.

Can I prevent future IRS notices like CP501K?

The best way to prevent receiving future IRS notices is by keeping up-to-date with your tax obligations. File your taxes on time, make full payments by the due date, and if you anticipate difficulties paying, arrange for a payment plan early. You can also choose to receive electronic notices and set reminders to help you stay on top of any tax-related issues.
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 CP501K notice is a reminder from the IRS that you have a balance due on your tax account.
  • You should respond quickly to avoid accruing additional interest and penalties.
  • If you can’t pay the full amount, consider setting up a payment plan or installment agreement.
  • Ignoring the notice can lead to enforcement actions such as tax liens or wage garnishments.

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