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IRS CSED Calculator: Estimate When the 10-Year Clock Runs Out

The IRS generally has 10 years from the date a tax was assessed to collect it; after the Collection Statute Expiration Date, in the words of IRC 6502, the tax can be collected only if levy is made or a court proceeding begun within that window. But the clock pauses for bankruptcies, pending offers, hearings, and more. This estimator applies the sourced rules to your dates, and it is an educational estimate: the controlling CSED is the one in IRS records, shown on your account transcript.

Enter your assessment date
Read this before trusting any date: this tool counts overlapping suspension periods once (the correct rule per the Taxpayer Advocate: simultaneous events run simultaneously), but it cannot see your IRS file. Special rules it does not model include the 90-day minimum after a CDP determination, the 6-month floor after returning from abroad, court proceedings that extend collection indefinitely, and written extensions signed with installment agreements. Accounts also carry one CSED per assessment, so a single tax year can have several. Your transcript shows the earliest one per period.

What pauses the clock, with sources

EventSuspensionExtra time afterSource
BankruptcyFrom petition until the case is discharged, dismissed, or closedPlus 6 monthsIRC 6503(h); IRS
Offer in compromise pendingWhile the IRS reviews the offer, and during any appeal of a rejectionPlus 30 days after rejectionIRS; IRM 5.1.19.3.4
Collection Due Process hearingFrom receipt of your request until withdrawal or final determination, including appeals90-day minimum remains after determination if less was leftIRS; IRM 5.1.19.3.3
Installment agreement requestWhile the IRS reviews the requestPlus 30 days if withdrawn, rejected, or terminated, plus any timely appealIRS; IRM 5.1.19.3.5
Living outside the USWhile continuously abroad 6 months or moreAt least 6 months remain on returnIRC 6503(c)
Innocent spouse claimFrom the claim until waiver or the Tax Court window endsPlus 60 daysIRS; IRM 5.1.19.3.6
Military serviceDuring servicePlus 270 days after notification (combat zones: exit date plus 180 days)IRS; IRM 5.1.19.3.8 and .9

The parts people get wrong

Three verified points cut against common folklore. First, ordinary payments do not restart the federal clock; the suspension events are statutory, and payments are not among them (private debts under state statutes work differently, as our state statute of limitations table shows). Second, an account can hold multiple CSEDs at once, one per assessment: an audit or penalty assessment years after filing starts its own 10-year clock, which is why the IRS says your account "can include multiple tax assessments, each with their own CSED." Third, the collection alternatives that pause the clock are a real trade: an offer in compromise or CDP hearing buys review time by adding collection time, which is worth weighing when the CSED is close. The programs themselves are decoded in our CNC, offer in compromise, and payment plan guides.

Finding the real number

The IRS's instruction is direct: "You can find a CSED in your account transcript," accessible through your IRS online account, Form 4506-T, or the transcript line at 800-908-9946. Our transcript code decoder covers reading the rest of the transcript while you are in there. For balances near the CSED, hardship status (currently not collectible) can sometimes carry a balance to expiration, a strategy with real tradeoffs a credentialed professional should evaluate on your facts.

Sources: IRC 6502 and 6503; IRS: Time the IRS can collect tax; IRM 5.1.19; Taxpayer Advocate: understanding your CSED (2026). Verified July 2026.

Educational estimate only, not tax or legal advice, and not a determination of any actual expiration date. The controlling CSED is computed by the IRS from your account records; verify with your account transcript and a credentialed tax professional before relying on any date. ClearChoiceRadar is not affiliated with the IRS or any government agency.