Hold Codes
Transaction Codes
Letters
IRM'S
Command Codes
100

Define Hold Code 1

What is Holds refund, allows adjustment notice

100

What is the transaction code for tax increase

What is TC 290


100

Define 105C letter

What is fully disallowance 

100

IRM For CII General Guidelines

What is IRM 21.5.1.5.1

100

Which command code stores the taxpayer tax return information submitted by the taxpayer

What is TRDBV 

200

Define Hold Code 2

What is Holds refunds, delay adjustment notice

200

What is the transaction code for tax decrease

What is TC 291

200

Define 106C Letter

What is Partially Disallowance

200

IRM to locate the expected wait time to place a taxpayer on hold

What is IRM 21.1.1.4

200

Which command code would you use to locate the taxpayer current address

What is ENMOD

300

Define Hold Code 3

What is stops adjustment notice & allows refund

300

What is the transaction code for Estimated Tax Penalty

What is TC 170

300

Define 324C letter

What is Amended Return Incomplete for Processing 

300

Which IRM provides information about Underreporter Paper Inquires

What is 21.3.1.6.52.2

300

Which command code would you use to make an adjustment

What is REQ54

400

Define Hold Code 4

What is holds refund and a notice will not be issued at any time. 

400

What is the transaction code to identify Underreporter(AUR)

What is TC 922

400

Define 916C letter

What is Claim Incomplete for Processing; No Consideration

400

Freeze Code Procedures IRM 

What is 21.5.6.4

400

Which command code would you use to update dependents information (name, SSN)

What is DDBCK

500

Define Hold Code 0

What is when no other Hold Code applies

500

What is the transaction code to identify Additional Tax Assessment by Examination or Appeals.

What is TC 300

500

Define 544C LETTER

 What is Apology for IRS Error

500

IRM regarding direct deposit on Amended Return

What is 21.5.3.4.18.1

500

Which command code would you use to tear up an adjustment

What is TERUP