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N›Taxpayer Notice Codes (TPNCs)

Form CT-1 MFT 09 TPNCs

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

See the list of taxpayer notice codes for Form CT-1 ,Employer’s Annual Railroad Retirement Tax Return, in IRM 3.12.13-37, Taxpayer Notice Codes for Form CT-1.

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

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