A Secret security clearance does not have a fixed expiration date. Under the federal government’s Continuous Vetting system, your eligibility stays valid as long as automated monitoring turns up nothing disqualifying and you remain in, or recently departed from, a position that needed the access. If you leave a cleared job, your eligibility generally remains reusable for up to two years before a new investigation is required. So how long does a Secret security clearance last in practice? For most people, it lasts as long as they keep working in cleared roles and stay clean under ongoing monitoring.
The Old 10-Year Rule Is Gone
The frequently cited answer — that a Secret clearance lasts 10 years — describes a system the government has already replaced. Under the old rules, Secret holders were fully reinvestigated every 10 years and Top Secret holders every five. Those periodic snapshots left long gaps where serious problems could go undetected.
Beginning in 2018, an initiative called Trusted Workforce 2.0 swapped scheduled reinvestigations for ongoing monitoring. The entire national security workforce was moved onto Continuous Vetting by the end of 2022, and the government targeted full decommission of the legacy periodic reinvestigation model by early 2026.1Performance.gov. Trusted Workforce 2.0 Transition Report Periodic reinvestigations still happen in limited cases, mostly to resolve issues flagged by the automated system, but they are no longer how the government keeps tabs on clearance holders.2Performance.gov. Personnel Vetting Quarterly Progress Update, FY24 Q2
How Continuous Vetting Keeps Your Clearance Active
Rather than resetting the clock every decade, Continuous Vetting checks government and commercial records on a rolling basis and flags anything that suggests a clearance holder may no longer be trustworthy. The automated checks pull from categories including criminal activity, credit and financial records, terrorism-related databases, foreign travel, public records, and existing eligibility records across agencies.3Center for Development of Security Excellence. Continuous Vetting Methodology
When something is flagged, security officials review the record and may ask you to explain. Most flags produce a routine inquiry, not immediate revocation. Ignoring the inquiry is a fast way to lose eligibility. In effect, your clearance “lasts” as long as nothing that appears in these feeds raises a concern that you can’t resolve.
The Five-Year SF-86 Refresh
Alongside the automated monitoring, Department of Defense personnel holding a clearance must submit an updated SF-86 — the standard background investigation questionnaire — every five years.4United States Marine Corps Flagship. Requirement for Submission of a New SF86 With Signed Release Pages Every Five Years This keeps your baseline personal information current so the automated system has something accurate to check against. It is not the old-style reinvestigation, and it does not restart any kind of clearance term. Think of it as refreshing paperwork on file.
What Happens When You Leave a Cleared Job
The clearest expiration point for a Secret clearance is what happens when you step away from cleared work. The day you leave the position, your access to classified information ends. The underlying eligibility determination stays on file, unattached to any job, and it has a shelf life.
Executive Order 12968 sets the rules. If you have been separated from government service for no more than two years, your eligibility can be reapproved without a new investigation, provided three things are true: your most recent investigation was completed within the prior five years, you certify in writing that nothing relevant has changed, and a records check turns up nothing unfavorable.5GovInfo. Executive Order 12968 – Access to Classified Information If you stayed with the same employer but moved out of a role requiring access, similar conditions apply without the two-year separation clock.
Once that two-year window closes, the government generally requires a new investigation before you can be cleared again. New investigations are slow and expensive for prospective employers, which is why a career break of under two years is far easier to come back from than one that stretches longer.
When Another Agency Will Honor Your Clearance
Federal policy strongly favors reciprocity: one agency should accept another agency’s clearance determination without redoing the work. Under Security Executive Agent Directive 7, agencies must accept an existing background investigation and adjudication at the same or higher level, and they may not require a new SF-86 or new investigative checks when reciprocity conditions are met.6ODNI/NCSC. Reciprocity of Background Investigations and National Security Adjudications
Reciprocity is refused in a few situations:
- New information of security concern has surfaced since the last investigation
- The most recent investigation is more than seven years old, though agencies may accept older ones case by case
- The clearance was granted on a temporary, interim, or one-time basis
- The clearance is currently denied, revoked, or suspended
For shorter-term work such as interagency visits and information exchanges, the receiving agency must accept your active clearance regardless of investigation age, provided it is active and not interim.6ODNI/NCSC. Reciprocity of Background Investigations and National Security Adjudications For day-to-day cross-agency collaboration, your Secret clearance travels with you. Contractors follow the same reciprocity framework, and only the government (not your employer) can grant, deny, or revoke a clearance.7Defense Counterintelligence and Security Agency. FAQs – Facility Security Officers
How a Clearance Can End Early
Because Continuous Vetting runs all the time, a Secret clearance can also be pulled at any point. Adjudicators apply 13 guidelines set out in Security Executive Agent Directive 4, effective June 2017, covering areas such as allegiance, foreign influence, personal conduct, financial considerations, alcohol, drugs, psychological conditions, criminal conduct, and handling of protected information.8Department of Energy. Security Executive Agent Directive 4 – National Security Adjudicative Guidelines
In practice, a handful of these drive most revocations. Financial problems — delinquencies, unexplained affluence, bankruptcy — surface quickly under automated credit monitoring.9eCFR. 32 CFR Part 147 – Adjudicative Guidelines for Determining Eligibility for Access to Classified Information Ongoing marijuana use is essentially disqualifying because cannabis remains illegal under federal law regardless of state law, though past recreational use is weighed under a whole-person assessment.10eCFR. 32 CFR Part 147 – Guideline H, Drug Involvement A pattern of criminal conduct or dishonesty — including lying on the SF-86 itself — creates doubt about judgment and reliability. Unreported foreign contacts and relationships raise concerns under Guideline B, though marriage to a foreign national is not an automatic bar.
One point worth clearing up: routine mental health treatment does not end your clearance. Guideline I is narrowly focused on conditions a qualified professional links to impaired judgment or reliability, or on refusal to follow prescribed treatment. Grief counseling, marital counseling, and treatment for combat-related conditions are not disqualifying and are actively encouraged.9eCFR. 32 CFR Part 147 – Adjudicative Guidelines for Determining Eligibility for Access to Classified Information
Failing to self-report events required under Security Executive Agent Directive 3 — foreign travel, foreign contacts, arrests, major financial changes — can itself become grounds for losing eligibility, separate from the underlying event.11ODNI. Security Executive Agent Directive 3 – Reporting Requirements for Personnel With Access to Classified Information or Who Hold a Sensitive Position Most required reporting must reach your security office within five business days of the event.12Nuclear Regulatory Commission. Required Reporting for Clearance Holders
So a Secret clearance lasts indefinitely on paper, but in reality it lasts as long as three things hold: you remain in (or recently held) a cleared position, ongoing monitoring finds nothing that changes the adjudication, and you meet the paperwork and reporting obligations that keep the record current. Step outside a cleared role for more than two years, and the clock finally does run out.