Specifications for Electronic Filing of Form 1042-S, Foreign Person's U.S. Source Income Subject to Withholding Revision Date 11/09/2022

• Legal Form Number: 1042-S
• Year: 2026
• Issuer: Treasury Department
• Section: Treasury Department

Publication 1187

Specifications for Electronic Filing of

Forms 1042-S, Foreign Person’s U.S. Source

Income Subject to Withholding

For Tax Year 2023

Publication 1187 (Rev. 12-2023) Catalog Number 47024M Department of the Treasury Internal Revenue Service www.irs.gov

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Table of Contents

Part A General Information ......................................................................................................... 5

Sec. 1 Introduction ............................................................................................................... 7

Sec. 2 Purpose ..................................................................................................................... 7

Sec. 3 What’s New for Tax Year 2023 ................................................................................. 7

Sec. 4 Communicating with the IRS .................................................................................... 8

Sec. 5 Additional Resources ............................................................................................... 9

Sec. 6 Filing Requirements, Retention Requirements, Due Dates, and Extensions ...... 10

.01 Filing Requirements ................................................................................................................. 10

.02 Retention Requirements .......................................................................................................... 11

.03 Due Dates ............................................................................................................................... 11

.04 Extension of Time ................................................................................................................... 11

Sec. 7 Extension of Time for Recipient Copies of Information Returns ......................... 11

Sec. 8 Form 8508, Application for a Waiver from Electronic Filing of Information

Returns ............................................................................................................................... 12

Sec. 9 Penalties Associated with Information Returns ................................................... 12

Sec. 10 Amended Information Returns ............................................................................. 12

.01 General Information ................................................................................................................. 12

.02 When to File .............................................................................................................................12

.03 Filing Amendments Electronically ........................................................................................... 13

.04 Amended Return File Layout for One and Two Transaction Corrections ................................ 13

Sec. 11 Definition of Terms ................................................................................................ 17

Sec. 12 State Abbreviation Codes, APO/FPO Addresses, and Province Codes ............ 21

.01 State Abbreviation Codes ........................................................................................................ 21

.02 APO and FPO Addresses ........................................................................................................ 22

.03 Province Codes ....................................................................................................................... 22

Sec. 13 Taxpayer Identification Number ........................................................................... 23

Part B Data Communications ................................................................................................... 25

Sec. 1 Information Returns (IR) Application for Transmitter Control Code (TCC) ........ 27

.01 Information Returns (IR) Application for Transmitter Control Code TCC) ............................... 27

.02 Using the Online Information Return (IR) Application for Transmitter Control Code (TCC) ..... 27

,03 Application Approval/Completed .............................................................................................. 28

.04 Revise Current Transmitter Control Code (TCC) Information .................................................. 28

.05 Do I Need More than One TCC? ............................................................................................. 28

.06 Deleted TCC ............................................................................................................................ 28