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

TC 29X/30X Net-CGA - Math Error

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

A TC 29X/30X Net-CGA Math Error will be located under the last section present on the register. (See Figure 3.12.21-34.) Also refer to Exhibit 3.12.21-10 (TC 150 Abstract versus Tax Period Table) and Exhibit 3.12.21-11 (TC 290-30X Abstract versus Tax Period Table) for more information.

Figure 3.12.21-34

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The computation of TC 29X/30X Net-CGA is the sum of all Transaction Codes 29X and 30X in Sections 01 through 19. The Total Tax-CGA is the sum of Fields 40-M, Total Income Tax Withheld, 40-J, Adjusted Total Social Security Tax, and 40-O, Adjusted Total Backup Withholding.

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