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MFT-CD 13 has to be calendar year with Reference Number 628.

Note:

Internal Revenue Manual Part 3. Submission Processing · 2026-10-03 edition · updated 2026-10-04 · United States

See also IRM 3.12.21.9.2, Correction Procedures - Section 40.

Field 40-B-Taxable Social Security Wages (Form 941, Form 943, Form 944 and Form 945):

This information is found under Item B (Section 40), Page 2 (Form 3413); also, Line 2, Page 1 (Form 3552).

This field is valid for MFT 01, 11, 14, and 16.

If, after checking, there are NO invalid or Math Error conditions, Clear with Action Code 7.

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▸Contents — Internal Revenue Manual Part 3. Submission Processing
Internal Revenue Manual Part 3. Submission Processing

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