Timeframes
Command Codes
Reason Codes
Math Error Codes
Letters
100

e-4442 Account Referral

WHAT IS 30 Days?

100

Determines if a refund return has been filed and is being processed

What is CC FFINQ?

100

Excess social security and tier 1 RRTA tax withheld

What is 055?

100

We changed the amount of health savings account deduction on your tax return because there was an error on your Form 8889, Health Savings Accounts (HSAs). The error was in one of the following:

  • Computation of the health savings account deduction on Form 8889.
  • Transfer of the amount to your tax return.

WHAT IS 153?

100

ADDRESS CHANGE ACKNOWLEDGMENT

WHAT IS A 104C LETTER?

200

S- Freeze (Release)

WHAT IS 4 weeks from input of CHK64?

200

Lists both paper and electronic filings for returns

What is CC TRDBV?

200

SE TAX


What is 044?

200

We changed the amount claimed as standard deduction on your tax return. You are entitled to a higher standard deduction if you and/or your spouse are age 65 or older and/or blind.

WHAT IS 192?

200

INFORMATION INSUFFICIENT OR INCOMPLETE FOR PROCEESING INQUIRY

WHAT IS A 131C LETTER?

300

Refund (TPP Authentication completed)

WHAT IS 9 Weeks?

300

Displays payments made over a given period of time

What is CC IMFOLP?

300

QDCGTW/SCHEDULE D

WHAT IS 043?

300

We changed the amount of tax on your tax return because there was an error in the addition of your tax, alternative minimum tax, and advance premium tax credit repayment.

WHAT is 230?

300

MATH ERROR EXPLAINED

WHAT IS A 474C LETTER?

400

TAS Referral

WHAT IS 2 Weeks?

400

Will create an IDRS module for any specific period not currently on IDRS

What is CC MFREQ?

400

ODC

What is 173?

400

We changed the amount claimed as Recovery Rebate Credit on your tax return. The error was in one or more of the following:

  • The Social Security number of one or more individuals claimed as a qualifying dependent was missing or incomplete.
  • The last name of one or more individuals claimed as a qualifying dependent does not match our records.
  • One or more individuals claimed as a qualifying dependent exceeds the age limit.
  • Your adjusted gross income exceeds $75,000 ($150,000 if married filing jointly, $112,500 if head of household).
  • The amount was computed incorrectly.

What is 683?

400

PARTIAL DISALLOWANCE

WHAT IS A 106C LETTER?

500

Refund - ITIN not yet Assigned (January 15th through April 30th)

WHAT IS 15-17 Weeks from Filing of Return and W-7?

500

Is the message board within IDRS for the Campus you are currently accessing

WHAT IS CC MESSG?

500

AOTC

 What is 106?

500

The individual taxpayer identification number (ITIN) for one or more of your dependents has expired. As a result, we disallowed certain credits claimed on your return. This change may affect any of the following credits:

  • Credit for child and dependent care expenses.
  • Credit for other dependents.
  • Education credits.

What is 710?

500

APOLOGY FOR IRS ERROR

WHAT IS A 544C LETTER

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