MFT-CD 13 has to be calendar year with Reference Number 628.›Note:
Section 40 - Field Requirements - Fields A Through Z
Internal Revenue Manual Part 3. Submission Processing · 2026-10-03 edition · updated 2026-10-04 · United States
Field 40-A--Adjustment Total of Income Tax Withheld (Form 943, Form 945, and Form 941 - MFT 01---posted prior to 12/31/2004):
This information is found under Item A (Section 40), Page 2 (Form 3413); also, Line 1, Page 1 (Form 3552).
This field is valid for MFT 01,11, and 16.
IMPORTANT: On original input, this field, plus Field 40-B, Taxable Social Security Wages, and Field 40-V, Total Income Tax Withheld, must equal the net of all transaction codes 29X and 30X. If, after checking, there are NO invalid or Math Error conditions, Clear with Action Code 7.
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