Reminder:
Internal Revenue Manual Part 25. Special Topics · 2026-10-03 edition · updated 2026-10-04 · United States
Each return on the account must be considered separately. It is possible to follow nullity procedures for one invalid return but assign an IRSN for another invalid return posted to the same module.
If
Then
(1) There is No Lost Refund,
Follow the instructions in IRM 25.23.4.10.1, Identity Theft (IDT) with Invalid Returns.
(2) There is a Lost Refund,
Follow the instructions in IRM 25.23.4.10.1, Identity Theft (IDT) with Invalid Returns.
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