How to Get a Secret Clearance: SF-86, Investigation, and Adjudication

To get a Secret security clearance, you first need a job that requires one. A federal agency, military branch, or cleared defense contractor must offer you a position and sponsor your investigation; you then complete the SF-86 questionnaire, submit to a Tier 3 background investigation by the Defense Counterintelligence and Security Agency (DCSA), and wait for an adjudicator to decide whether granting you access to classified information is consistent with national security.¹

You Can’t Apply on Your Own

This is where most people go wrong. There is no application form you can submit yourself, no office that accepts walk-ins, and no fee you can pay to get the process started. The clearance process only begins after a specific position has been identified as requiring access to classified information and you have received a conditional offer for that position.¹

Your sponsor handles the paperwork, submits the investigation request, and pays for it. DCSA bills the requesting agency directly, so you will never see an invoice for your own clearance.²

Military enlistment is one of the most common paths in. When you enlist into a role that requires a Secret clearance, your branch acts as the sponsor and puts you through the same process. Many people carry that clearance into defense contractor jobs after they separate.

Who Qualifies

U.S. citizenship is required, without exceptions or waivers. The government has to establish that you show unquestioned allegiance to the United States and are free from undue foreign influence before you can be granted access to classified information.³ Dual citizens aren’t automatically disqualified, but the foreign citizenship gets close scrutiny during adjudication.

The clearance rules don’t set a formal minimum age, but the SF-86 is built around adult history. The official DCSA guide instructs applicants not to list information from before their 18th birthday unless it is needed to satisfy a minimum two-year history requirement.⁴ You also need to be reachable, and so do your references. Someone who is incarcerated or otherwise out of contact cannot be meaningfully investigated.

Filling Out the SF-86

The Questionnaire for National Security Positions, or Standard Form 86, is the backbone of the whole process. It’s completed electronically through a system called eApp, which replaced the older e-QIP platform.⁵ Your sponsor grants you access and sets a deadline for completion.

The form is long and detailed. Pull the following together before you start:

Every address where you’ve lived in the past ten years, with dates and someone who can verify each one.
Every job in the past ten years, with supervisor names and phone numbers.
Schools attended, degrees, and dates.
Financial trouble spots: debts in collections, bankruptcies, tax liens, currently delinquent accounts. Exact balances aren’t required, but you need to know what exists.
Foreign contacts, foreign travel, and any foreign property or financial interests.
Arrests, charges, and convictions, including matters that were expunged or sealed.
Illegal drug use or misuse of prescription drugs, particularly in the past seven years.
Mental health counseling or treatment. Routine grief or marital counseling generally isn’t a concern.
References who actually know you well enough to talk about your character and reliability.

Honesty matters more than a spotless record. Investigators verify what you write, and something you failed to disclose looks far worse than something you disclosed. Lying or deliberately omitting information on the SF-86 is a federal crime and virtually guarantees a denial.

The Background Investigation

Once your SF-86 goes in, DCSA opens a Tier 3 investigation, which is the standard level for Secret clearances. Investigators verify what you reported and probe areas where problems might exist. The work has three main components:

Record checks against criminal history, financial, credit, and government databases.
A credit review looking for delinquency patterns, excessive debt, or unexplained wealth.
Interviews with your listed references, and sometimes with neighbors, coworkers, or supervisors you didn’t list. You may be interviewed as well, especially if anything on your SF-86 needs clarification.

A polygraph is not part of the standard Secret investigation. Polygraphs are reserved for Top Secret/Sensitive Compartmented Information positions and certain intelligence community roles. If the job needs one, you’ll know well ahead of time.

As of mid-2025, DCSA reports the average Tier 3 investigation takes roughly 73 days, with adjudication adding about 47 days after that. Clean cases can move faster. Cases involving extensive foreign travel, overseas residence, or serious financial issues can stretch six months or longer.

Interim Clearances

Waiting months to start work would sink both applicants and employers, so the government issues interim Secret clearances to bridge the gap. When your sponsor submits the investigation request, DCSA’s Adjudication and Vetting Services simultaneously reviews your SF-86, fingerprint results, and proof of citizenship to decide whether temporary access is appropriate.⁶ An interim Secret can come through in as little as five to ten days if the paperwork is clean.

Interim clearances aren’t automatic. Recent drug use, significant foreign ties, or serious financial problems on your SF-86 will typically hold up the interim, and you’ll wait for the full investigation. An interim can also be withdrawn if the investigation later turns up something concerning.

How Adjudicators Decide

When the investigation wraps, a DCSA adjudicator reviews everything and decides whether granting you access is consistent with national security. This isn’t a pass/fail checklist. Adjudicators apply what’s called the “whole person” concept, weighing all favorable and unfavorable information together to reach an overall judgment about your reliability, trustworthiness, and loyalty.⁷

The framework comes from 13 adjudicative guidelines set out in Security Executive Agent Directive 4.⁸ The ones that trip up the most applicants:

Financial considerations. Unresolved debt, tax problems, bankruptcy, and living beyond your means. This is the single most common reason clearances are denied. The concern isn’t that you’ve been broke; it’s that financial pressure can make someone vulnerable to bribery or coercion.
Foreign influence. Close relationships with foreign nationals, especially anyone tied to a foreign government. Family abroad doesn’t automatically disqualify you, but it generates questions.
Criminal conduct, particularly patterns rather than isolated incidents.
Drug involvement, including marijuana.
Personal conduct, meaning dishonesty during the investigation, rule violations, or patterns of poor judgment.
Alcohol consumption, especially DUIs or excessive drinking patterns.

Every concern has corresponding mitigating conditions. An adjudicator looking at $30,000 in delinquent debt will also look at whether you’re on a repayment plan, whether the debt came from something like a medical emergency, and how long ago it happened. Severity, recency, resolution, and what it says about you today all count.

Marijuana and Drug Use

Marijuana warrants its own note because state legalization confuses a lot of applicants. Federal adjudicative guidelines classify marijuana alongside other controlled substances, and any use counts as illegal drug involvement regardless of what your state law says.⁹ Past use is not automatically disqualifying.

What matters is how recent the use was and whether you intend to continue. The guidelines are blunt that recent drug involvement, especially after being granted a clearance, will “almost invariably result in an unfavorable determination.”⁹ Experimental use several years ago with no intent to resume gets mitigated routinely. Regular use that stopped six months before you applied is much harder. Ongoing use while pursuing a clearance is essentially a guaranteed denial.

The strongest mitigating factors are the passage of time, the use being isolated rather than habitual, and a clear statement that you don’t intend to use again. Completing a drug treatment program with a favorable prognosis from a medical professional also carries weight.

If You Get Denied

A denial isn’t the end of the process. If DCSA decides a clearance isn’t warranted, you receive a Statement of Reasons (SOR) laying out exactly which guidelines you triggered and what specific facts drove the concern. From there you can submit a written response with supporting documents, request a personal appearance before DCSA adjudicators, or appeal to the Defense Office of Hearings and Appeals for a hearing before an administrative judge.¹⁰

The SOR is useful information even when it stings. It tells you exactly what to address. If the concern is financial, you can document a repayment plan or resolved accounts. If it’s foreign influence, you can provide context about the nature of your relationships. Denials do get overturned, especially where the applicant can show the concern has been mitigated since the investigation ran.

After You’re Cleared

Holding a clearance carries continuing obligations. Under Security Executive Agent Directive 3, you have to report certain events to your sponsoring agency’s security office:¹¹

Unofficial foreign travel, which requires an itinerary submitted and approved in advance. Deviations must be reported within five business days of your return.
New close relationships with foreign nationals, especially those involving personal obligation or the exchange of personal information.
Any arrest, charge, or conviction.
Significant debt problems, unexplained wealth, bankruptcy, or foreign financial interests.
Any approach by a known or suspected foreign intelligence entity.

Secret clearance holders used to be reinvestigated every ten years. That’s gone. Under the Trusted Workforce 2.0 initiative, the cleared workforce was moved to continuous vetting by the end of 2022, and enrollment in continuous vetting now satisfies what used to be the periodic reinvestigation.¹² Automated record checks now run against criminal, terrorism, financial, and public records databases on an ongoing basis, and DCSA gets an alert when something flags.¹³ For you, that means a DUI or a sudden pile of unpaid debt can surface within days rather than sit undetected for years.

Moving Between Cleared Jobs

If you leave one cleared position for another, you generally don’t need a new investigation. Security Executive Agent Directive 7 requires agencies to accept each other’s clearance adjudications, a principle called reciprocity.¹⁴ Your new employer checks your status in government databases and, if it’s current, accepts it.

Reciprocity has limits. It doesn’t apply if your most recent investigation is more than seven years old, if new security-relevant information has emerged since your last investigation, or if your clearance was granted with a recorded exception under SEAD 4.¹⁴ The new agency may also ask you to note changes since your last SF-86.

A clearance without a sponsoring employer goes inactive, but the underlying investigation stays valid. If you return to cleared work within a reasonable timeframe and nothing disqualifying has come up, a new sponsor can reactivate your eligibility rather than start over.

1
U.S. Intelligence Community Careers. Security Clearance Process
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Defense Counterintelligence and Security Agency. Billing Rates and Resources
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U.S. Department of State. Dual Citizenship – Security Clearance Implications
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Defense Counterintelligence and Security Agency. Guide for the Standard Form SF-86
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Defense Counterintelligence and Security Agency. Electronic Questionnaires for Investigations Processing
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Defense Counterintelligence and Security Agency. Interim Clearances
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Center for Development of Security Excellence. Receive and Maintain Your National Security Eligibility
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Office of the Director of National Intelligence. Security Executive Agent Directive 4 – National Security Adjudicative Guidelines
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eCFR. Title 32 Part 147 – Adjudicative Guidelines for Determining Eligibility for Access to Classified Information
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Defense Counterintelligence and Security Agency. Appeal an Investigation Decision
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Office of the Director of National Intelligence. Security Executive Agent Directive 3 – Reporting Requirements for Personnel With Access to Classified Information
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Performance.gov. Trusted Workforce 2.0 Transition Report
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DCSA.mil. Continuous Vetting – The Path to a Trusted Workforce
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Office of the Director of National Intelligence. Security Executive Agent Directive 7 – Reciprocity of Background Investigations and National Security Adjudications