Contract-to-hire is an employment arrangement where someone comes on as a contractor for a fixed period, typically three to six months, with a planned conversion to full-time if the fit holds. During that window, the contractor stays on the staffing agency’s payroll. The client company pays a bill rate, observes actual job performance, and decides whether to make it permanent.
Clean idea on paper. Gets complicated in practice.
We run a high volume of C2H placements at KORE1, mostly for tech roles, and the companies that use this model well share a few consistent habits. The ones that get burned fall into the same traps repeatedly. This guide covers the mechanics, the real costs, the legal stuff most employers don’t think about until it’s too late, and how to actually evaluate someone during the contract window rather than just collecting calendar pages.
If you already know C2H is what you want, our contract staffing page is the right next step. If you’re still sorting out whether the structure fits your actual situation, the rest of this is worth reading first.
What Is Contract-to-Hire, Exactly?
C2H, or contract-to-hire, puts a candidate in your shop as a contractor for a set window, usually three to six months, with everyone going in knowing the plan is to convert them to permanent payroll at the end of that window if the performance and fit hold. The contractor stays on the staffing firm’s payroll the whole time, not yours.
People sometimes call it “temp-to-perm.” People also reach for “try-before-you-buy.” Fine phrase. What it misses is that the evaluation window, when you run it with real structure, milestones, and feedback loops, hands you actual performance data that no interview can produce. It’s a longer look, not just a delayed commitment.
How it differs from the other two common models:
| Model | Who Employs the Worker | Duration | Conversion to Full-Time | Best For |
|---|---|---|---|---|
| Contract-to-Hire | Staffing agency | 3 to 6 months, defined | Planned, with conversion fee | High-stakes roles, uncertain budget, culture-fit risk |
| Direct Hire | Your company, immediately | Permanent from day one | Not applicable | Known requirements, executive roles, low turnover risk |
| Pure Contract | Staffing agency | Project-based or open-ended | Not planned | Defined projects, backfill, surge capacity |
The key structural difference: in a C2H arrangement, both parties enter with conversion as the expected outcome, which changes the whole dynamic compared to a pure contract placement where everyone knows the end date is the end date. That changes how the contractor shows up, how the team treats them, and how the evaluation should be structured. It’s not a short-term contractor who might stick around. It’s a long audition with a job at the end.
How Contract-to-Hire Actually Works
The Contract Period
Three to six months is standard for tech. Some agreements run 90 days. Some run longer if the role is complex or the budget situation is genuinely uncertain, though anything past six months starts to create co-employment exposure and, more practically, starts to lose you candidates who had a direct hire offer sitting in their inbox the whole time. What you don’t want is an open-ended C2H with no defined conversion trigger date. That creates ambiguity that makes good candidates walk.
During the contract period, the worker is on the staffing agency’s W-2 payroll. The agency handles payroll taxes, workers’ comp, and employer-side compliance. You pay a bill rate, typically the equivalent of their desired salary plus a markup of 40 to 60 percent depending on role and market. More on that math in the costs section.
The Evaluation Window
This is the part most companies waste.
The contract period gives you something interviews can’t: real observed performance in your actual environment. But that only matters if you structure it. Companies that treat the first three months as “see how it goes” tend to arrive at the conversion decision without any more useful information than they had on day one. They fell back on intuition anyway.
A structured evaluation means defining what success looks like at 30, 60, and 90 days before the contractor starts. Specific outputs. Specific interactions. Peer feedback. Not just “does the manager like them.”
Conversion
When the contract period ends and both sides want to proceed, the worker converts to your direct payroll as a full-time employee. You pay the agency a conversion fee, the worker stops appearing on their payroll, and the arrangement is done.
Conversion fees are usually 15 to 25 percent of the worker’s anticipated first-year salary. Some agreements credit a portion of the bill rate paid during the contract period against the fee, especially for longer engagements. Always negotiate this upfront. Not after you’ve already decided to convert.
The flip side: if the fit isn’t there, the contractor simply doesn’t convert. No severance package, no unemployment claim, no wrongful termination exposure. You end the arrangement at the defined close date and move on.
When Contract-to-Hire Makes Sense
It’s the Right Call When
You’re filling a senior technical role where a bad hire would be expensive. Mid-level software engineer making $130K, you can absorb a bad hire. Principal engineer making $200K running a team, the math changes. The contract period on a high-stakes role is cheap insurance.
Your budget is approved in principle but not locked. “We’re planning to hire for this” and “we have headcount approved” are different things at a lot of companies, especially mid-size tech firms where headcount approvals run through a separate process from project budgets. A contractor can start generating value immediately without triggering the formal permanent headcount number.
The role is new. Building something from scratch, a new data platform team or a first-ever ML infrastructure function, means you probably don’t fully know what the role needs to be until someone is actually sitting in it and telling you what the real constraints are. C2H lets you test the definition against reality before you lock in permanently.
Culture integration is a real concern. Not every high-skill candidate lands well in a specific team dynamic. Three months of actual collaboration tells you more than six rounds of behavioral interviews.
When to Skip It and Go Direct
Executive and VP-level roles almost never work well as C2H. The people you want for those positions are not going to leave their current role for a six-month tryout. You’ll lose them to companies willing to commit. If you need senior leadership, direct hire is the right model.
Same deal with highly specialized engineers who have multiple offers. A machine learning infrastructure engineer with three competing offers is not going to accept “let’s start you on contract and see.” They have a permanent offer waiting. Direct hire or you’re not getting them.
And if you already have someone in mind internally, or through a referral you trust, spending six months and a conversion fee on a C2H arrangement adds cost without adding information. Skip it.
What Contract-to-Hire Actually Costs
Bill Rates vs. Salary
The math is roughly this: take the hourly equivalent of the candidate’s target annual salary, then add 40 to 60 percent markup. That markup covers the agency’s employer costs, payroll taxes, workers’ comp, health insurance contributions, and margin.
A software engineer targeting $130K a year works out to about $62.50 per hour at 2,080 annual hours. At a 50 percent markup, your bill rate runs around $93 to $95 per hour. Run that for ninety days at full-time and your contractor spend before conversion lands somewhere between $45,000 and $50,000.
Then comes the conversion fee. At 20 percent of $130K, that’s $26,000. Total all-in spend for the C2H arrangement: somewhere around $70,000 to $76,000.
Direct hire from KORE1 on the same role would typically run a placement fee of 18 to 22 percent of first-year salary, paid at placement. No ongoing bill rate. Call it $23,000 to $28,000 at placement, nothing more after that.
So C2H costs more. Significantly more. Not a surprise, and honestly not a dealbreaker either. You’re paying for optionality and performance validation. The question is whether that additional cost is worth it for the specific role and situation. For senior tech positions where a bad hire costs six months of salary plus recruiting restart costs, it usually is. For roles where you already have strong signal, probably not.
Conversion Fee Negotiation
Most clients don’t ask about conversion fees until they’re actually ready to convert, which means they’re negotiating from a position of zero leverage because they’ve already decided they want the person and the agency knows it. Wrong time to ask. Negotiate the conversion fee structure in the initial agreement, before anyone has started working, so you know exactly what you’re committing to if things go well. Ask specifically whether bill hours paid during the contract period credit against the fee. Ask whether the fee scales based on contract length. Ask what happens if conversion happens in month two versus month five.
A good agency will have clear answers to all of these. Vague language in the fee section is a signal to push harder.
Legal Landmines Employers Miss
W-2 vs. 1099 and Why It Matters to You
When a staffing agency runs your C2H contractor on W-2 payroll, the agency is the employer of record. They handle payroll taxes, withholding, and employer liability. The client company has no formal employment relationship with the contractor at that point.
Some arrangements try to structure contractors as 1099 independent contractors. This creates problems. The IRS and many state labor agencies apply the same behavioral control tests to 1099 workers whether or not the word “contractor” appears in the agreement. If the worker has fixed hours, uses your equipment, follows your processes, and takes direction from your managers, they look like an employee regardless of what the paperwork says. Misclassification penalties are real and they go back multiple years.
Always make sure your C2H arrangement runs through a staffing agency paying proper W-2 employer taxes. This is not a place to cut costs. At KORE1, all contractors are W-2 employees during the contract period. Full stop.
Co-Employment Risk
Co-employment is a different issue. It happens when a contractor works at a client site long enough, under close enough direction, that they begin to look like a joint employee of both the agency and the client. Certain legal protections can attach. Benefits claims have been made successfully on this basis.
A defined C2H contract with a clear end date and a documented conversion trigger largely eliminates this exposure because the employment relationship is time-boxed, formally structured, and understood by both parties from the start. Open-ended contracts that run indefinitely without conversion create the risk. Six months in and still “evaluating” means you have a problem, and it’s not just the contractor who’s frustrated.
What creates exposure is running someone in a de facto full-time capacity for six months, integrating them into your culture, including them in org chart conversations, and then claiming they were never really part of the team when it comes time to justify non-conversion. That’s where legal risk actually lives. Document the evaluation, maintain the structure, and stick to the defined window.
For more on proper worker classification, the IRS has clear guidance at irs.gov.
How to Actually Evaluate a C2H Hire
This is where most companies underperform. You have three to six months of actual observed performance, which is an enormous amount of information compared to what any interview process can surface, but only if you go in with a real framework instead of just watching and hoping.
Before day one, agree internally on what a successful 90-day outcome looks like, writing it down in a format you could actually hand to the contractor on their first day without embarrassment. Not “they fit in well” or “the team likes them.” Specific outputs. For a software engineer: shipped X feature, passed code review without major rework, took ownership of Y service, asked good questions in architecture discussions. For a data engineer: built X pipeline independently, documented their work without prompting, resolved Y incident. Real things.
At 30 days, have a structured conversation. Not a performance review. The manager walks in prepared with specific observations: what’s been strong, what needs work, what has to change before day sixty. The contractor deserves signal in both directions. If you’re not going to convert them at 90 days, they shouldn’t find out at 89.
At 60 days, decision point. Be honest about whether you actually have enough information to make the call. If not, pinpoint the gap. Sometimes the issue is the evaluation framework, not the candidate. Fix the framework.
At 90 days (or whatever your contract end is), the decision should not be a surprise to anyone in the room.
Mistakes Companies Make with Contract-to-Hire
Using it as a budget workaround. “We don’t have headcount approval but we can bring them on as a contractor” is a legitimate business scenario. But if the plan is to run the person indefinitely on contractor status without converting, because you’re avoiding the headcount approval process, that creates the co-employment risk described above. Not fair to the candidate either. Be honest about the timeline.
Not telling the candidate the conversion criteria. Good contractors take other calls. If they don’t know what they’re being evaluated on, they’ll take the direct hire offer that comes through at month two without much hesitation. Transparency about performance expectations is not a negotiating weakness. It keeps people.
Ghosting on feedback until conversion time. Three months of no feedback followed by “we’ve decided not to convert” is a reputation problem, and in a market as small as tech recruiting in any given metro, the contractor community talks more than most hiring managers realize. If the fit isn’t there at 60 days, say so. Give them enough notice to find something else. You’ll get more referrals and a better reputation in the candidate pool if you treat people well even when the answer is no.
Not negotiating the conversion fee before starting. Already covered this. Negotiate it in the initial agreement, not at conversion time when you have no leverage.
Skipping the structured evaluation. See the entire section above. “We just watched them work” is not an evaluation. It’s vibes.
Common Questions
How long does a contract-to-hire position last?
Three to six months for most tech roles. Ninety days is common for individual contributor positions. Six months shows up more for senior engineers, team leads, or roles where the ramp time is genuinely long. Anything past six months without a defined conversion trigger is worth revisiting, both for legal reasons and because good candidates won’t wait indefinitely.
Contract vs. contract-to-hire: is there actually a meaningful difference?
A pure contract engagement has no planned conversion. The worker fills a specific need for a defined period, then leaves. C2H enters the engagement with conversion as the expected outcome, contingent on performance and fit. The distinction matters for how you treat the worker, how they show up, and how the agreement is structured legally. Worth keeping the two separate in your head when you’re deciding which model fits.
Do contract-to-hire workers get benefits during the contract period?
It varies by firm. Many staffing agencies offer contractors access to benefits plans, though contribution rates tend to be higher than what an employer-sponsored plan would cost. At KORE1, contractors are W-2 employees during the contract period and have access to our benefits. The full employer-sponsored package typically kicks in at conversion.
Can a company back out of a contract-to-hire?
Absolutely. Not converting at the end of the defined window is always on the table, and it’s actually a core reason companies choose this model. No legal obligation to convert unless you’ve put a guarantee in writing. What creates exposure is running someone in a de facto full-time capacity for six months without maintaining the documented evaluation structure, then trying to claim they were never really part of the team. Document the evaluation, give clear feedback, and make the decision within the defined window.
What is a typical conversion rate for C2H placements?
Somewhere in the 60 to 75 percent range across the industry, based on what we observe in staffing firm reporting and what we hear from clients who’ve worked with other agencies before coming to us. KORE1’s tech C2H conversion rate runs above that because we pre-screen for role fit before the contract starts, looking at work style and team dynamics alongside technical skills. Low conversion rates usually signal one of two things: the evaluation process is weak, or the agency isn’t screening tightly enough upfront. Both are fixable.
Is contract-to-hire a good deal for the employer?
For the right role, yes. It costs more than direct hire in total spend. But a bad direct hire for a $150K senior engineer role costs, conservatively, $50,000 to $75,000 when you factor in wasted salary, team disruption, and recruiting restart costs. C2H eliminates most of that downside for a fraction of the premium. Not the right model for every role. For high-stakes technical hires where culture fit and on-the-job performance both matter, it’s hard to beat.
How KORE1 Handles Contract-to-Hire
We specialize in tech and professional staffing across IT, engineering, data, AI, and finance. Most of our clients running senior technical searches end up choosing C2H, and we’ve structured enough of these agreements that we have a pretty clear view of what makes them work and what gets people into trouble.
A few things that matter when you work with KORE1 on C2H:
All contractors are on our W-2 payroll during the contract period, which means you don’t inherit employer liability, payroll tax exposure, workers’ comp risk, or any of the compliance complexity that comes with directly employing a contractor. We handle that entirely.
We screen for role fit before the contract starts, not just skills. Technical interviews are table stakes. We also look at work style, autonomy level, and collaboration patterns relative to your team’s actual environment. The goal is a contractor who converts, not one who makes it to 60 days and then leaves for a direct hire offer from someone else.
We build conversion fee structures and bill rate schedules upfront so there are no surprises at the end. You know exactly what conversion will cost before the contractor walks in the door.
If you’re evaluating a C2H engagement for a current open role, we can walk through the right structure for your specific situation. Start with our contact page or explore how our broader IT staffing services work.
C2H works when you match it to the right scenario, and it’s a waste of money when you don’t. Know which situation you’re in before you start.