IRS Notices Library
Worried about a tax letter you just received? Don’t panic. Browse our IRS notices library to learn more about why it was sent and the next steps you should take to resolve the issue.
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Common IRS Letters & Notices
The IRS sends out millions of notices and letters annually. Our library contains the most common notices sent to taxpayers. If you are unable to locate your specific letter below, please visit IRS.gov or contact our office for additional assistance.
IRS Notice CP01
The IRS verified your claim of identity theft and placed an indicator on your account. […]
IRS Notice CP01A
The IRS sends out CP01A notice to taxpayers who have been assigned an identity protection […]
IRS Notice CP01H
IRS Notice CP01H is sent to taxpayers who have used a Social Security number (SSN) […]
IRS Notice CP04
IRS Notice CP04 is sent to taxpayers who may qualify for tax deferment due to […]
IRS Notice CP05A
The IRS sends notice CP05A when it needs additional information from a taxpayer before releasing […]
IRS Notice CP05B
IRS Notice CP05B is sent to taxpayers who are expecting a refund but the income […]
IRS Notice CP09
Not all IRS notices are bad. If you receive IRS Notice CP09, you could be […]
IRS Notice CP11
The IRS sends notice CP11 to inform taxpayers about adjustments to their tax returns which […]
IRS Notice CP12
When the IRS corrects one or more mistakes on a tax return, resulting in a […]
IRS Notice CP13
The IRS sends out notice CP13 when it makes changes to your tax return. Unlike […]
IRS Notice CP14
IRS Notice CP14 is sent to taxpayers when they have unpaid taxes. Next Steps Do not […]
IRS Notice CP16
IRS Notice CP16 notifies taxpayers of changes made to their tax return due to a […]
IRS Notice CP21A
The IRS sends notice CP21A when it makes changes to Form 1040 based on information […]
IRS Notice CP21B
Notice CP21B is sent when the IRS makes changes to Form 1040 based on information […]
IRS Notice CP21C
The IRS sends notice CP21C when it makes corrections to Form 1040. Those changes, however, […]
IRS Notice CP21E
IRS Notice CP21E is sent to a taxpayer when the IRS makes changes to a […]
IRS Notice CP22A
IRS Notice CP21C is sent to taxpayers when requested changes are made to their Form […]
IRS Notice CP23
The IRS will send notice CP23 if the amount of estimated tax payments indicated on […]
IRS Notice CP24
IRS Notice CP24 is sent to a taxpayer when the estimated tax payments posted to […]
IRS Notice CP25
The IRS will send notice CP25 if there is a difference between the amount of […]
IRS Notice CP27
IRS Notice CP27 is sent to taxpayers who may be eligible for the Earned Income […]
IRS Notice CP30A
IRS Notice CP30A is sent to a taxpayer when the IRS reduces or removes the […]
IRS Notice CP32
IRS Notice CP32 is sent to a taxpayer when a replacement refund check is issued. Next […]
IRS Notice CP32A
IRS Notice CP32A is sent to a taxpayer when their original refund check expires, and […]
IRS Notice CP39
IRS Notice CP39 is sent to a taxpayer when their expected refund is applied to […]
IRS Notice CP40
The IRS sends notice CP40 to inform taxpayers that their unpaid account has been assigned […]
IRS Notice CP42
IRS Notice CP42 is sent to a taxpayer when part or all of their expected […]
IRS Notice CP44
IRS Notice CP44 is sent to a taxpayer when the IRS withholds their tax refund […]
IRS Notice CP45
IRS Notice CP45 is sent to a taxpayer when the IRS is unable to apply […]
IRS Notice CP49
A taxpayer receives IRS Notice CP49 when part or all of their expected refund is […]
IRS Notice CP52
IRS Notice CP52 is sent to a taxpayer when the IRS adjusts the amount of […]
IRS Notice CP53
IRS Notice CP53 informs the taxpayer that their refund check is being sent by mail. Next […]
IRS Notice CP53A
IRS Notice CP53A is sent to taxpayers when the IRS attempts to direct deposit a […]
IRS Notice CP53C
IRS Notice CP53C is sent to a taxpayer if the IRS attempts to direct deposit […]
IRS Notice CP57
IRS Notice CP57 is sent to a taxpayer when the IRS attempts to automatically withdraw […]
IRS Notice CP59
IRS Notice CP59 is sent to taxpayers when the IRS has no record of their […]
IRS Notice CP60
IRS Notice CP60 is sent to a taxpayer when the IRS removes a payment it […]
IRS Notice CP62
IRS Notice CP62 is sent to taxpayers when the IRS applies a payment to their account. […]
IRS Notice CP63
IRS Notice CP63 notifies taxpayers that their tax refund is being held due to an […]
IRS Notice CP71
IRS Notice CP71 is an annual reminder that the IRS is required to send when […]
IRS Notice CP71A
IRS Notice CP71A is sent annually to taxpayers who are in a Currently Not Collectible […]
IRS Notice CP71C
IRS Notice CP71C is an annual reminder sent to taxpayers who still have an outstanding […]
IRS Notice CP75
IRS Notice CP75 is sent to a taxpayer when the IRS initiates an audit to […]
IRS Notice CP76
IRS Notice CP76 is sent to a taxpayer when the IRS allows the Earned Income […]
IRS Notice CP79
IRS Notice CP79 is sent to taxpayers when the IRS disallows their claim for the […]
IRS Notice CP80
IRS Notice CP80 is sent when payments and/or tax credits are credited to a taxpayer’s […]
IRS Notice CP81
IRS Notice CP81 notifies taxpayers that the IRS hasn’t received their tax returns for a […]
IRS Notice CP87A
The IRS sends notice CP87A when a taxpayer claims a dependent that is subsequently listed […]
IRS Notice CP90
IRS Notice CP90, also known as a Final Notice of Intent to Levy, is a […]
IRS Notice CP91
IRS Notice CP91 notifies taxpayers that their Social Security benefits may be levied due to […]
IRS Notice CP92
IRS Notice CP92 is sent to a taxpayer when the IRS levies their state tax […]
IRS Notice CP94
IRS Notice CP94 is sent to taxpayers who are court-ordered to pay restitution due to […]
IRS Notice CP259
IRS Notice CP259 is sent to taxpayers who are required to file a business return […]
IRS Notice CP301
When a taxpayer registers for an online service with the IRS, they are sent a […]
IRS Notice CP501
IRS Notice CP501 is sent to taxpayers who have a balance due on one of […]
IRS Notice CP501H
IRS Notice CP501H is sent to taxpayers who have outstanding shared responsibility payments due from […]
IRS Notice CP503
IRS Notice CP503 is sent to taxpayers who continue to ignore repeated requests for payment […]
IRS Notice CP504
IRS Notice CP504 is a Notice of Intent to Levy. It is sent to taxpayers […]
IRS Notice CP516
IRS Notice CP516 is sent to taxpayers as a reminder that they have not yet […]
IRS Notice CP518
IRS Notice CP518 is a final reminder that a taxpayer has not filed their required […]
IRS Notice CP521
IRS Notice CP521 is sent to taxpayers to remind them to make their scheduled payment […]
IRS Notice CP523
IRS Notice CP523 notifies taxpayers that their installment agreement is scheduled to be terminated. Additionally, […]
IRS Notice CP565
IRS Notice CP565 is sent when a person’s Taxpayer Identification Number (ITIN) is renewed. Next […]
IRS Notice CP566
IRS Notice CP566 informs a taxpayer that their Individual Taxpayer Identification Number (ITIN) application can’t […]
IRS Notice CP567
IRS Notice CP567 is sent to taxpayers when the IRS rejects their individual taxpayer identification […]
IRS Notice CP2000
IRS Notice CP2000 is sent when the income or payment information the IRS has on […]
IRS Notice CP2501
IRS Notice CP2501 is sent to taxpayers when the income reported on their tax returns […]
IRS Notice CP3219A
IRS Notice CP3219A is sent to a taxpayer when the information reported on their tax […]
IRS Notice 1450
IRS Notice 1450 is sent to taxpayers who have a federal tax lien on their property. […]
IRS Letter 525
IRS Letter 525 is sent to taxpayers when the IRS makes adjustments to their tax […]
IRS Letter 531
IRS Letter 531 is sent by the IRS after proposed changes to a taxpayer’s tax […]
IRS Letter 2802C
IRS Letter 2802C is sent when a taxpayer’s withholding doesn’t meet the IRS guidelines, causing […]
IRS Letter 4883C
IRS Letter 4883C is sent to a taxpayer when the IRS suspects there is a […]
IRS Letter 5071C
IRS Letter 5071C is sent to a taxpayer when the IRS needs to verify their […]
IRS Notice LT11
IRS LT11 is a written notification, required by law, informing a taxpayer that the IRS […]
IRS Notice LT16
IRS LT16 is a simple notice informing a taxpayer that the IRS is trying to […]
IRS Notice LT26
IRS LT26 is sent to a taxpayer when they have failed to respond to previous […]
IRS Notice LT33
IRS LT33 is sent to taxpayers who have made a payment on their account but […]
IRS Notice LT39
IRS LT39 is sent to taxpayers to remind them that they still have an outstanding […]