The collection statute expiration date - the CSED - is computable for every debt you owe, today, from your own transcripts. This chapter is the method, step by step, including the error patterns that make checking the IRS's math worth real money.
Step One: Inventory the Assessments
Pull account transcripts for every year with a balance and list each assessment with its date - the original return assessment, any audit additions, any penalty assessments. Each runs its own 10-year clock from its own date: one tax year routinely carries multiple CSEDs, each governing its slice of the balance. The tax year itself is irrelevant; a 2016 return filed in 2019 was assessed in 2019 and runs to 2029.
Step Two: Stack the Tolling Events
Scan the transcript entries for the events that pause the clock: a pending offer in compromise tolls for its duration plus 30 days; a timely collection due process hearing tolls while pending, with a minimum-extension rule when little time remains; bankruptcy tolls for the case plus six months; innocent spouse requests and extended periods outside the country toll their durations. Date each event's start and end from the transcript, sum the pauses, and slide each CSED out accordingly. Certain installment-agreement-related periods add wrinkles worth professional eyes.
Step Three: Hunt the Errors
Compare your computation against any CSED the IRS states, and hunt the recurring error patterns: tolling periods double-counted, events miscoded, pauses applied to clocks they do not legally affect - errors that run in the government's favor with remarkable consistency until challenged, plus the occasional collection activity continuing past dates already expired. Both get corrected when confronted with the math, and the corrections sometimes end cases outright.
Step Four: Strategize Against the Dates
Short dates invert the playbook: postures that let the clock run - hardship status, partial-pay agreements - dominate, while the doomed offer that freezes a dying clock becomes the most expensive mistake available. The computation takes an afternoon; I run it on every file past its seventh birthday, and finding a near-dead debt is one of this practice's reliable pleasures. Send the transcripts.