Collection statute expiration date (CSED)

What it means

The date the IRS collection period is expected to expire for a particular assessment. 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.