CP121 Notice: What Is It and How Should You Respond?

Last updated 10/30/2024 by

Edited by

Fact checked by

Summary:

The CP121 notice is issued by the IRS to notify taxpayers that a payment made toward one tax account has been applied to a different tax liability. This usually occurs when there is an overpayment, and the IRS redirects the excess amount to cover another outstanding debt. Understanding the implications of this notice and taking timely action can help ensure proper account management and avoid complications. In this article, we cover everything you need to know about the CP121 notice and the steps you should take upon receiving it.

Receiving a notice from the IRS can be concerning, and the CP121 notice is no exception. This notice informs taxpayers that a payment made for one tax account has been applied to another outstanding tax debt. Whether it’s a result of an overpayment or an error, understanding the CP121 notice and taking the right steps to address it is crucial for maintaining your tax obligations. This article will walk you through what the CP121 notice entails, why it is issued, and the actions you need to take to resolve any potential issues.

Get Competing Personal Loan Offers In Minutes

Compare rates from multiple vetted lenders. Discover your lowest eligible rate.

Get Personalized Rates

It's quick, free and won’t hurt your credit score

What is the CP121 notice?

The CP121 notice is an official communication from the IRS informing taxpayers that a payment they made has been applied to a different tax liability than originally intended. This typically occurs when there is an overpayment on one tax account, and the IRS chooses to allocate the extra funds toward another outstanding balance. Reasons for issuing a CP121 notice can include:

Overpayment made to a particular tax period or account.
IRS adjustments reallocating funds based on existing tax debts.
Administrative corrections or clerical changes by the IRS.

The notice is essentially a way for the IRS to notify taxpayers about changes to their payment allocation, and it may include instructions on what to do if the taxpayer disagrees with the reallocation.

Pro Tip

Set up an online IRS account to track your payments and account activity. This can help identify discrepancies early and keep your tax records accurate.

Common reasons for receiving a CP121 notice

Taxpayers may receive a CP121 notice for several reasons, typically related to payment adjustments and overpayment situations. Some common reasons include:

Overpayment applied to another tax debt

The most frequent reason for receiving a CP121 notice is an overpayment on one tax account that the IRS has used to cover a different outstanding debt. If you owed taxes from a previous year or had an unpaid tax bill for a different type of tax, such as payroll or excise tax, the IRS may apply the overpayment to settle that balance.

IRS adjustments to payments or credits

In some instances, the IRS may make adjustments to the payments or credits on your account. This could be due to corrections in the amount owed or changes in the tax calculations. When such adjustments result in a payment being redirected, a CP121 notice is issued.

Clerical changes or processing errors

Although less common, clerical changes or errors during the processing of tax return or payments can lead to the issuance of a CP121 notice. If the IRS discovers that a payment was mistakenly credited to the wrong account, they may reallocate the payment and notify the taxpayer through the CP121 notice.

Struggling with IRS notices? If you’ve received an IRS letter and aren’t sure how to handle it, you might want to explore professional tax relief options. Optima Tax Relief has helped thousands of people resolve their tax issues and get back on track with the IRS. Learn more about how they can assist you with your situation.

Impact of the CP121 notice on your tax situation

Receiving a CP121 notice can have several implications for your tax situation. It is essential to understand these potential impacts to manage your tax obligations effectively:

Impact on refunds: If you were expecting a refund but received a CP121 notice, it could indicate that the refund amount was used to cover another tax liability, reducing or eliminating the refund.
Changes in account balance: The payment reallocation may alter the balance owed on your various tax accounts. This could result in a lower balance for the account originally paid and a cleared or reduced balance for the outstanding debt.
Additional tax liabilities: If the IRS applied your overpayment to another debt, you may still owe taxes for the original account, especially if the remaining balance was not fully covered by the overpayment.

Steps to take when you receive a CP121 notice

If you receive a CP121 notice, prompt action is necessary to avoid further complications. Here are the steps you should take:

Review the notice: Carefully read the CP121 notice to understand the details of the payment reallocation. Check which tax periods and amounts are involved to ensure you have an accurate understanding of the changes.
Confirm payment records: Verify your payment records to confirm that the payment in question was correctly applied. If you notice any discrepancies, gather documentation such as payment receipts or transaction records.
Contact the IRS if needed: If you disagree with the payment reallocation or need clarification, contact the IRS using the phone number provided on the notice. Be prepared to provide documentation to support your claim.
Resolve any outstanding debts: If the payment was applied to an existing tax debt, consider making arrangements to pay any remaining balance to avoid penalties and interest.

Pro Tip

Always keep detailed records of all tax payments and correspondence with the IRS. This can help resolve disputes and provide a clear history of your tax account activity.

Consequences of ignoring the CP121 notice

Failing to respond to the CP121 notice can result in various negative outcomes. Ignoring the notice could lead to:

Accruing interest and penalties: If additional tax is still owed after the payment reallocation, penalties and interest will continue to accumulate on the unpaid balance.
Collection actions: The IRS may initiate collection actions, such as placing liens on property, garnishing wages, or levying bank accounts if the outstanding debt remains unresolved.
Credit impacts: While the IRS does not report directly to credit bureaus, unresolved tax debts can eventually affect your credit if liens or other collection measures are taken.

Options for handling overpayments or additional debts

If you find yourself with an overpayment or additional tax debts after receiving a CP121 notice, consider the following options:

Request a refund for overpayments: If you believe the overpayment should not have been applied to another debt, you can request a refund from the IRS. This may require providing proof of the overpayment.
Apply overpayments to future tax liabilities: You can also choose to apply any overpayment to your future estimated tax payments. This can help offset future tax obligations and reduce the amount you need to pay.
Set up a payment plan: If you have an outstanding balance that you cannot pay in full immediately, setting up a payment plan with the IRS can be a practical solution. The IRS offers different payment plan options, such as short-term payment agreements for balances paid off within 180 days and long-term installment agreements for longer repayment periods. Arranging a payment plan can help you avoid additional penalties and keep your account in good standing.

Responding to the CP121 notice

Addressing the CP121 notice promptly and accurately is key to resolving any issues related to payment reallocations. Here’s how to respond effectively:

Provide supporting documentation

If you believe that the payment was incorrectly applied or that the balance due is not accurate, you should provide supporting documentation to the IRS. This could include copies of payment receipts, bank statements showing the payment, or other relevant records. Be sure to submit this information along with any forms required by the IRS, as indicated in the CP121 notice.

Request a reconsideration if you disagree

In cases where you disagree with the IRS’s reallocation of the payment, you have the right to request a reconsideration. You can do this by contacting the IRS and explaining why you believe the payment was applied incorrectly. The IRS may review the information and make adjustments if necessary.

Monitor your IRS account status

After addressing the CP121 notice, continue to monitor your IRS account to ensure that any necessary changes are reflected accurately. You can do this by logging into your IRS online account or by contacting the IRS for updates. Staying on top of your account can help you avoid future issues or discrepancies.

Consequences of ignoring the CP121 notice

Ignoring a CP121 notice can lead to a range of consequences that may escalate over time. The following are potential outcomes of not taking action:

Accumulation of interest and penalties: If the balance remains unpaid, the IRS will continue to charge interest and penalties on the outstanding amount. Over time, this can significantly increase the total amount owed.
IRS collection actions: When debts remain unresolved, the IRS may resort to more aggressive collection tactics, such as filing liens against property, garnishing wages, or levying bank accounts.
Impact on future refunds: Any future tax refunds you are entitled to may be offset against the unpaid balance, meaning that you will not receive the refund until the debt is cleared.
Potential credit consequences: Although IRS notices do not directly affect credit scores, tax liens can appear on public records and may indirectly impact your creditworthiness.

Options for handling overpayments or additional debts

If you find yourself with an overpayment or new tax liabilities following a CP121 notice, there are several actions you can take:

Request a refund for overpayments: If you believe the overpayment was wrongly applied to another debt, you can request a refund. The IRS may require you to provide documentation proving that the payment was indeed an overpayment.
Apply overpayments to future estimated taxes: You may also opt to have any overpayment credited toward future tax liabilities. This could help reduce the amount you owe for the upcoming tax year.
Negotiate a payment plan: If the notice indicates that you still owe taxes, setting up a payment plan can help you manage the debt in a structured way. The IRS offers various options for taxpayers to pay their debts over time.

Pro Tip

If your financial situation prevents you from paying your full tax debt, consider applying for an offer in compromise (OIC). This program allows you to settle your tax debt for less than the full amount owed if you qualify. Consult a tax professional to see if an OIC is the right option for you.

How to avoid receiving future CP121 notices

To minimize the chances of receiving a CP121 notice or similar IRS notices in the future, consider taking these preventive measures:

Double-check payments and filing details

Always verify your payment amounts and ensure that payments are applied to the correct tax account and tax year. For instance, when making estimated tax payments, double-check that you are using the right payment voucher and entering the correct tax identification number.

Set up IRS account alerts

Sign up for IRS online account alerts. This service allows you to receive notifications regarding changes to your tax account, payment postings, and other important updates. Alerts can help you identify issues early and address them before they escalate.

Maintain thorough tax records

Keeping detailed records of all tax-related documents, including payment confirmations, correspondence with the IRS, and copies of tax returns, can be invaluable if you need to dispute an IRS notice. Having organized documentation ensures you can respond quickly and accurately.

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 should I do if I believe the IRS incorrectly applied my payment?

If you believe the IRS misapplied your payment, contact the IRS directly using the number provided in the notice. Be prepared to offer documentation, such as payment receipts or account statements, to support your claim. You may also request a reconsideration of the payment reallocation.

How long do I have to respond to the CP121 notice?

While there is no strict deadline mentioned in the CP121 notice, responding as soon as possible is advisable. Delays in addressing the notice can lead to accumulating interest and penalties, as well as potential enforcement actions.

Can the IRS refund the overpayment if I request it?

Yes, you can request a refund for an overpayment. However, the IRS will only grant the refund if it determines that the payment was indeed an overpayment and not required to cover another outstanding tax debt. The process may require you to provide proof of the original payment and documentation of the alleged overpayment.

Will the CP121 notice affect my future tax refunds?

If the IRS applies your payment to an existing tax debt, it may reduce or eliminate future refunds until the debt is paid off. Responding to the notice and settling any remaining tax liabilities will help ensure future refunds are not offset.

Can I apply overpayments to future tax years?

Yes, you can request that any overpayment be credited toward future estimated tax payments. This is a useful option for taxpayers who want to use overpayments to offset future tax obligations, rather than receiving a refund.

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

CP01	The IRS verified your claim of identity theft and will monitor your account.
CP01H	The IRS received a tax return with a social security number that belongs to a dead person.
CP02H	Money is due on an amended return based on a grant received due to Hurricane Katrina, Rita, or Wilma.
CP03C	You received the First-Time Homebuyer Credit for a house you purchased.
CP04	You 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.
CP08	You may be entitled to additional money due to the Additional Child Tax Credit.
CP10	Your tax return changed due to a miscalculation, and the refund you wanted to apply to an estimated tax payment has changed.
CP10A	Your 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.
CP11	You owe money because the IRS amended your return due to a miscalculation.
CP11A	Your 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.
CP11M	Your 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.
CP12	You are due a bigger refund because the IRS corrected one or more mistakes on your tax return.
CP12A	The IRS made changes to correct the Earned Income Credit (EIC) claimed on your tax return.
CP12E or CP12F	The IRS corrected a miscalculation on your return.
CP12M	The IRS made changes to the computation of the Making Work Pay and/or Government Retiree Credits on your return.
CP12R	The IRS made changes to the computation of the Rebate Recovery Credit on your return.
CP13	The IRS made changes to your return due to a miscalculation. There is no refund or amount due. Your balance is zero.
CP13A	The 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.
CP13M	The 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.
CP13R	The 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.
CP14	You owe money on unpaid taxes.
CP16	The IRS made changes to your return due to a miscalculation. The refund you were due was applied to other tax debts.
CP21A	You owe money due to the changes you requested that the IRS make on your tax returns.
CP21B	You 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.
CP21C	The 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.
CP21E	As a result of your recent audit, the IRS made changes to your tax return, and you owe money as a result of those changes.
CP21I	The IRS made changes to your tax return relating to the Individual Retirement Arrangement (IRA) taxes. You owe money due to the changes.
CP22A	The IRS made the changes you requested, and you owe money as a result.
CP22E	As a result of your recent audit, the IRS changed your tax return, and you now owe money.
CP22I	The IRS made changes to your tax return relating to the Individual Retirement Arrangement (IRA) taxes. You owe money due to the changes.
CP23	The 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.
CP24	The 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.
CP24E	The 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.
CP25	The 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.
CP31	You need to update your address because your refund check was returned to the IRS.
CP45	The IRS was unable to apply your overpayment to your estimated tax as you requested.
CP49	The IRS used all or part of your refund to pay a tax debt.
CP53	Your refund check will be sent by mail because the IRS can’t provide your refund through direct deposit.
CP57	The bank declined your payment, so the IRS was unable to draft funds from your bank account.
CP71	A reminder of the amount you owe in tax, penalty, and interest.
CP71A	A reminder of the amount you owe in tax, penalty, and interest.
CP71C	A reminder of the amount you owe in tax, penalty, and interest.
CP71D	A reminder of the amount you owe in tax, penalty, and interest.
CP88	The IRS is holding your refund because you haven't filed one or more tax returns, and it believes you will owe tax.
CP90	The 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.
CP91	The IRS will levy up to 15% of your social security benefits for unpaid taxes.
CP120	The IRS needs documentation of your tax-exempt status.
CP120A	Your organization’s tax-exempt status has been revoked because it failed to file a Form 990 series return for three consecutive years.
CP130	You may no longer need to pay the Alternative Minimum Tax (AMT) because your tax return filing requirements changed.
CP152	The IRS received your return.
CP153	The IRS will send your refund by mail because your direct deposit did not go through.
CP161	You have an unpaid balance due to the IRS.
CP166	Your monthly payment to the IRS did not go through due to insufficient funds in your bank account.
CP178	You may no longer owe excise tax because your tax return filing requirements changed.
CP231	You need to update your address because your refund was returned to the IRS.
CP259	You did not file the business tax return identified in the notice.
CP259A	You 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).
CP259B	The 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.
CP259C	The 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.
CP259D	You must file this form, but you did not – Form 990-T, Exempt Organization Business Income Tax Return.
CP259E	You 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.
CP259F	The IRS requires you to file this form but did not – Form 5227, Split-Interest Trust Information Return.
CP259G	The IRS requires you to file this form, but you didn’t – Form 1120-POL, U.S. Income Tax Return for Certain Political Organizations.
CP259H	As 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.
CP276A	You submitted your tax liability schedule incorrectly. The IRS typically charges a Federal Tax Deposit (FTD) penalty for this but did not this time.
CP276B	The IRS did not receive the correct amount of tax deposits. It normally charges a Federal Tax Deposit (FTD) penalty but did not this time.
CP297	The 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.
CP297A	The IRS has levied your assets for unpaid taxes. You have the right to dispute the levy at a Collection Due Process hearing.
CP298	The IRS notifying you of its intent to levy up to 15% of your social security benefits for unpaid taxes.
CP501	You have a balance due on one of your tax accounts.
CP503	You have an unpaid balance on one of your accounts, and the IRS has not heard from you.
CP504	You 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.
CP504B	You 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.
CP521	A reminder that you have an installment agreement payment due.
CP523	You have defaulted on your payment agreement. Therefore the IRS is terminating the agreement and will levy your assets.
CP601	Usted tiene un saldo pendiente de pago (dinero que le debe al IRS) en una de sus cuentas contributivas.
CP603	No hemos recibido respuesta de parte de usted y todavía tiene un saldo sin pagar en una de sus cuentas contributivas.
CP604	Usted 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.
CP604B	Usted 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.
CP621	Este aviso es para notificarle que usted tiene un plan de pagos a plazos vencido. Por favor, envíe el pago inmediatamente.
CP623	Este aviso es para informarle nuestra intención de cancelar su plan de pagos a plazos y confiscar (embargar) sus bienes. Usted incumplió en su acuerdo.
CP711	Nosotros 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.
CP721	Hicimos 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.
CP722	Hicimos 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.
CP771	Usted recibió este aviso para recordarle sobre la cantidad que adeuda en contribuciones, multas e intereses.
CP772	Usted recibió este aviso para recordarle sobre la cantidad que adeuda en contribuciones, multas e intereses.
CP773	Usted recibió este aviso para recordarle sobre la cantidad que adeuda en contribuciones, multas e intereses.
CP774	Usted recibió este aviso para recordarle sobre la cantidad que adeuda en contribuciones, multas e intereses.
CP959	Usted no radicó su planilla de contribución de negocios identificada en este aviso.
CP2000	The 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.
CP3219A	The 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.
CP3219N	The 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 0012C	The IRS needs additional information to process your tax return.
Letter 0484C	The IRS wants a completed
Letter 0525	Updates you on proposed changes after an IRS examination. Any changes are explained and details the refund due or taxes owed.
Letter 531	IRS 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 0549C	Your tax bill was paid.
Letter 0681C	The IRS accepted your payment proposal. However, this is not a formal Installment Agreement.
Letter 0757C	You did not adhere to the terms of your Installment Agreement.
Letter LT 11	The IRS plans to seize your property or rights to property.
Letter 1058	The 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 1961C	Your application for a Direct Debit Installment Agreement was declined. It explains why and what you need to do to qualify.
Letter 1962C	Your 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 2257C	The IRS is providing the payoff amount that you requested.
Letter 226-J	An IRS letter to large employers notifying them that they may be liable for an Employer Shared Responsibility Payment (ESRP).
Letter 2271C	A 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 2272C	An IRS letter explaining why your request to pay the balance due in installments was declined.
Letter 2273C	A 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 2318C	A response to a request to pay taxes due to payroll deductions. It also explains the fees that are charged.
Letter 2357C	The IRS is admitting that it did not send you the balance due notices that it should have.
Letter 2603C	The IRS accepted your installment agreement. The IRS will file a Notice of Federal Tax Lien on your personal property.
Letter 2604C	The 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 2761C	The 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 2789C	An 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 2840C	Confirms 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 3030C	Provides an explanation of the tax, penalty, and interest still due on your account.
Letter 3127C	A 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 3174	A reminder of taxes due after the IRS has sent a Notice of Intent to Levy.
Letter 3217C	The 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 3500	The IRS has received your documents, and it needs additional time to review them.
Letter 3572	Your Federal Income Tax Return has been selected for examination. The IRS auditor requests that you call to schedule an audit appointment.
Letter 4883C	The 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 47	The IRS is trying to locate the person identified in the letter and is requesting that you provide their new address.
Letter LP 59	The IRS has not received a response to the notice of levy it previously sent.
Audit Letter 2205	The 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 915	You recently underwent an audit, and the IRS informs you that you now owe taxes.

Key takeaways

The CP121 notice indicates that an overpayment was applied to another tax debt by the IRS.
Taking prompt action to address the notice can help prevent additional interest and penalties.
Verify payment records and communicate with the IRS if you disagree with the reallocation.
Setting up a payment plan or negotiating an offer in compromise can help resolve outstanding debts.

Show Article Sources

Share this post:

Table of Contents