TOOLS
MISC
PENALTIES
FORMS
IRNS
100

This command code is used to locate a duplicate filing condition.

What is TXMODA?

100

This schedule is attached to Form 945 if they’re a semi-weekly depositor.

What is Form 945-A, Schedule of Federal Tax Liability

100

The transaction code that indicates an interest free adjustment?

What is TC298?

100

The quarterly form used to report employment taxes. 

What is Form 941?

100

This IRN is used when correcting the tax shown on return.

What is IRN 871?

200

This command code can be used to request the TC976 from the files.

What is ESTABD/S?

200

The ASED of a 2018 Form 945 when the TC150 is prepared 6020(b).

The ASED isn’t set until the TP files their own form. 

200

This transaction code indicates a Failure to Deposit Penalty.

What is TC 180?

200

The form used report unemployment taxes.

What is Form 940?

200

This IRN should be used to adjust taxable social security tips on Form 941-X.

What is IRN 005?

300

This IAT Tool is used to release the –A Freeze.

What is REQ54/ADJ54?

300

Form used to correct the error when The Casino incorrectly reported gambling winnings as $10,000 instead of $1,000.

What is Form 945-X?

300

The command code used to review the federal tax deposit penalty.

What is FTDPNA?

300

The annual tax return for agricultural employees.

What is Form 943? 

300

This IRN is used to adjust taxable social security wages.

What is IRN 004?

400

This application is used to send an E-4442.

What is AMS?

400

The address used if a TP located in New Mexico wants to send a Form 945-X as certified mail.

What is Internal Revenue Service
1973 N Rulon White Blvd
Ogden, UT 84201?

400

This is the De Minimis threshold.

What is $2,500?

400

This letter discusses duplicate returns filed requesting an explanation from the taxpayer.

What is letter 31C?

400

This IRN is used to adjust taxable Medicare wages & tips.

What is IRN 073?

500

This letter should be sent regarding issues with Form 94X-X.

What is 4384C?

500

The date the TP must file a Form 945-X for the tax period 202412 if they discovered the error on Dec. 3rd 2025.

What is Jan. 31, 2026?

500

This is the penalty amount assessed for returns timely filed but not timely paid.

What is 10% penalty?

500

This is the form used when reprocessing a return with DLN.

What is Form 13596?

500

This IRN must equal the sum of any IRN 104 - 108.

What is IRN 113?