Currently not collectible (CNC)

What it means

A temporary IRS collection status used when payment would create financial hardship. In an IRS collection matter, the term should be read with the relevant tax periods, notices, account transcripts, deadlines, and current IRS guidance. Similar words can describe different legal or administrative steps, so the underlying record matters more than a shorthand label. Software can organize the facts, but it does not replace professional judgment when rights, enforcement, or disputed liability are involved.