There are a number of IRS letters and notices that are sent as either Examination Letters, Collection Letters, or Notices. Go to the IRS Letters and Notices Offering an Appeal Opportunity webpage for a brief summary of each of the following letters or notices:

• Letter 11 - Final Notice of Intent to Levy and Notice of Your Right to a Hearing
• Letter 73 - Notice of Levy and Your Right to a Hearing
• Letter 525 - General 30 Day Letter
• Letter 531 - Notice of Deficiency
• Letter 692 - Request for Consideration of Additional Findings
• Letter 915 - Examination Report Transmittal
• Letter 950 - 30 Day Letter-Straight Deficiency or Over-Assessment
• Letter 1058 - Final Notice Reply Within 30 Days
• Letter 1085 - 30-Day Letter Proposed 6020(b) Assessment
• Letter 1153 - Proposed Trust Funds Recovery Penalty Letter Notification
• Letter 3016 - IRC Section 6015 Preliminary Determination Letter (30 Day)
• Letter 3391 - 30-Day Non-filer Letter
• Letter 3172 - Notice of Federal Tax Lien Filing and Your Rights to a Hearing under IRC 6320

Notices:

• CP90 - Final Notice- Notice of Intent to Levy and Notice of Your Right to a Collection Due Process Hearing
• CP92 - Notice of Levy upon Your State Tax Refund - Notice of Your Right to a Hearing
• CP242 - Notice of Levy upon Your State Tax Refund - Notice of Your Right to a Hearing
• CP297 - Final Notice, Notice of Intent to Levy and Notice of Your Rights to a Collection Due Process Hearing
• CP523 - Default on your Installment Agreement (IA) Notice- Intent to Terminate your IA
• CP2000 - Request for Verification of Unreported Income, Payments and/or Credits

For more information about notices, go to our Notice Review - General Information FAQ.

Note that any link in the information above is updated each year automatically and will take you to the most recent version of the webpage or document at the time it is accessed.