One of the three isn't a clearance at all. It's also the one most federal applicants need. Here's the difference, how you get each one, and how long each takes.
Three phrases show up in posting after posting. Public Trust, Secret, Top Secret. Most people read them as three rungs on one ladder. They're not. Two are security clearances. The third isn't a clearance at all, and it quietly covers a huge share of federal work.
Getting that wrong costs you months. People chase a clearance for jobs that don't need one. They skip past jobs they could have had.
A security clearance is one thing. It's the government's OK for you to work with classified information. Some jobs handle material that would hurt the country if it leaked, so the person in the seat gets checked and approved for it.
A Public Trust answers a different question. Can you be trusted with the job itself? The government looks at every federal job and decides how much damage a bad hire could do. Jobs in the middle and the top of that range are the ones called public trust. The low ones still get a background check, but they don't carry the label.
The jobs that draw the label are the ones where the harm doesn't need secrets. Think setting policy, running a big program, public safety and health, or law enforcement work. The same goes for handling money, financial records, or any seat where a person could steer things for their own gain.
What that means for you. Nothing classified crosses a Public Trust desk. Somebody with a Public Trust isn't "cleared" for anything. They passed a check that says they're a fit for a job that matters. That's worth holding, and it's not a rung on the clearance ladder.
This is the mix-up I run into most. People assume a civilian government job takes a clearance. Usually, a Public Trust is the whole requirement.
There are three, ranked by how much harm a leak would cause.
Two things about that list. Each level covers the ones under it, so a Top Secret covers Secret and Confidential. And SCI is not a fourth level. Sensitive Compartmented Information is a layer added on top of a Top Secret, handed out job by job. TS/SCI is what the intelligence agencies run on.
Public Trust doesn't sit below Confidential on that list. It sits off to the side, measuring something else.
This is the part that makes the rest click. Every federal job gets two labels, from two different sets of rules.
Two labels, one job. So the link between them runs one way only. A job that needs a Secret is a public trust job too. It doesn't work backward. A Public Trust doesn't put you halfway to a Secret, and it won't turn a future clearance check into a formality.
The form follows the labels, not the job title.
Much of the SF-86 tracks the SF-85P question for question. Then it adds what a Public Trust check has no reason to ask about: foreign contacts, foreign travel, and mental health.
The route. You land a federal job, or a contractor job on a federal contract, that carries the moderate or high label. The agency starts the check. You fill out the SF-85P in eApp, the government's online system. Investigators run the checks. The agency decides.
The catch. You can't start it yourself. There's no window, no fee, no form you can file on your own. It's attached to a job, so it starts with a job. That's the same rule clearances run on, and it's covered in full in how clearance sponsorship actually works.
Where these jobs are. All over civilian government: program and management analysts, IT, budget and finance, health and grants. The big support shops inside places like Homeland Security post seats that ask for either a clearance or a public trust, depending on the desk. Contractors go through the same steps. The agency is still the one that requires it, even when it feels like the company did.
Same rule, higher stakes. Nobody gets a clearance on their own. An employer has to sponsor you, and you get sponsored by landing a job that needs the access. On the federal side, almost any job that requires a clearance will sponsor you, even when the posting doesn't say so. On the contractor side, look for the phrase "ability to obtain" in the clearance line. That's the tell. Who sponsors, where to find them and what to say is its own guide.
After that the steps are the same almost everywhere. A conditional offer, then sponsorship, then the SF-86 in eApp. The background check runs, you get a yes or a no, and then access for your specific job. Investigators dig up the facts. The agency that will hold the clearance makes the call. Your employer does neither one.
One hard rule. You have to be a U.S. citizen. Dual citizenship by itself doesn't sink you. A green card doesn't qualify.
The level you end up with. The job sets it, not you. Chasing a level isn't a plan. Chase the work, and the level comes with it.
Planning numbers, level by level. Every one of them moves with the agency, the case, and what's in your history.
Two things about those clearance numbers. They cover the fastest 90% of cases, so the slowest tenth is left out by design. And the government keeps changing what it counts and when it starts the clock. Published numbers jump around for reasons that have nothing to do with your case. What actually drags a case out is a longer story: the level, a polygraph, your own paperwork, references nobody can reach. That's in how long a security clearance takes.
One more thing on the clearance side. An interim cuts the wait for a lot of people. An interim Secret often lands in days to a couple of weeks. An interim Top Secret in one to two months.
This is the most useful thing on the page, and almost nobody says it out loud. A Public Trust that hasn't come through yet doesn't have to keep you out of the job. In plenty of cases you're on the payroll, doing the actual work, while the check is still running behind you.
The rule behind it. The federal rules tell agencies to start the check before they hire you. If they didn't, they're told to start it as soon as they can, even if you're already on the job. The system is written for people who are at work before the paperwork catches up.
The words to use. Agencies call it EOD, short for entry on duty. Your paperwork goes in, your fingerprint results come back, and a security office takes an early look and gives the OK. The full check keeps running after you start.
What it does to your calendar. Your start date rides on fingerprints and a quick review, which take weeks. Not on the full check, which takes months. Two people with the same paperwork can start a whole season apart on this one thing.
The question nobody asks. Whether the job can bring you on under EOD while the check finishes. It's a normal question for a recruiter or a hiring manager. Nothing else you can ask at that stage moves your timeline as much.
The limits. It's the agency's call, not yours. Some agencies and some contracts want the whole check done before you touch the work. And an early OK is early, not final. It can be pulled back, and a bad answer at the end can end the job it let you start. It's a maybe, not a done deal.
The difference isn't red tape. In a Public Trust job there's no classified material to protect, so there's nothing to hold back while the government finishes checking you out. In a cleared job, the classified work is the job. No clearance, no access. No access, and there's not much for you to do.
That's what an interim clearance is for. It's an early yes, based on the first round of checks, so you can do real work before the case closes. Same idea, higher bar, and still the agency's call. Some agencies don't grant interims at all, and the intelligence agencies generally don't.
So here's the practical picture. On the Public Trust side, starting early is close to routine. On the cleared side it's common but conditional. Ask about it with every employer.
The posting. A federal announcement spells the requirement out. A contractor posting puts it in the clearance line. Read that line first. It tells you whether the rest of the posting is worth your time.
The default for civilian federal work. Public Trust. If the work doesn't touch classified information, a clearance isn't what stands between you and the job. The federal hiring process is. If that's where you're stuck, start with why USAJOBS keeps saying "not referred" and how a federal resume has to be formatted. Then see whether one of the special hiring authorities already covers you.
The pull toward the higher level. It's not automatically the better target. A Top Secret takes longer, digs harder, and fits fewer jobs. Pick the work you want. The level comes with it. Confidential is rare enough that it's not a target at all.
The one time aiming pays off. If you really are headed for classified work, the route is the real decision. A Secret through a defense contractor is a different road than a TS/SCI through an intelligence agency.
If you came here to find out which one you need, the answer for most federal applicants is the one nobody talks about. If you really are headed for cleared work, the free Security Clearance Playbook covers the rest of the road. The four routes to sponsorship. The exact phrase that finds employers who sponsor. Then the SF-86, the background check, the polygraph, and the reasons clearances get turned down. It costs nothing, and it's the same process I used myself. There's more on my background, and the rest of the guides are here.
The follow-up questions this page gets most often.
Answer 7 quick questions and you'll know immediately whether this system fits your situation. It takes about 60 seconds.
See If You Qualify → Free to apply · 7 quick questions · No obligation