IRS transcript code

TC-420 — what it means for the case

Transaction Code 420. Examination indicator — indicates the return has been selected for audit. An open TC-420 is a flag that an audit is in progress or pending. For tax professionals — not a consumer decoder.

Definition

Transaction Code 420. Examination indicator — indicates the return has been selected for audit. An open TC-420 is a flag that an audit is in progress or pending.

What it means for a resolution case

An open exam generally blocks OIC acceptance. Resolve or wait out examination before treating the year as a collection-only problem.

Related codes

TC-424 · TC-150 ·

Where RESO uses it

Core Discovery reads these postings from Account transcripts and surfaces them as findings — not as a raw code list. The ledger stays Tier IRS. Client memory does not overwrite it.

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