Fractional HR vs Full-Time HR: The Actual Numbers

Most comparisons of these two options skip the part you actually need, which is the money. So here it is first, with its sources, and then the parts the money doesn’t capture.

What a full-time HR manager costs

Salary.com puts the national average base salary for a human resources manager at $147,200, across all industries and company sizes. The Bureau of Labor Statistics median for the same role is $149,280 — within about 1.4%, which is unusually good agreement between two independent sources.

Base salary is not what the role costs you.


Base salary	$147,200
Employer payroll taxes — FICA 7.65%, FUTA and SUTA ~1.5%	$13,469
Benefits and insurance — health, dental, vision, retirement match, workers’ comp, disability, PTO	$36,800
Fully loaded	$197,469

That’s before recruiting costs. Before the three to four months it typically takes to hire. And before you’ve found out whether the role was sized correctly — which, at 40 people, it frequently isn’t.

What a fractional arrangement costs

A TrueCollab retainer runs $2,000 to $6,500 a month depending on scope — $24,000 to $78,000 a year. Engagements needing a dedicated resource are scoped separately.

Against $197,469, that’s 60% to 88% less.

The arithmetic is above; check it. And check the salary figure against BLS, which is free and public.

Now the part that comparison hides

You are not buying a full-time person at a discount. You’re buying the hours the work actually needs.

A 30-person company has perhaps six to ten hours a week of genuinely high-stakes people work, plus administration that shouldn’t be occupying a finance lead’s afternoon. That’s an awkward quantity — too much to absorb, not enough to hire for. Fractional exists because that gap exists.

So the honest framing isn’t “the same thing, cheaper.” It’s a different purchase, and for most companies under 150 people it’s the correct one. Any firm presenting it purely as a saving is inviting you to make the comparison wrong.

What full-time actually gives you that fractional doesn’t

Worth being straight about, since we sell one of these.

Presence. Someone in the building, in the hallway conversations, who hears things before they become formal. That has real value and no retainer replicates it.

Availability without thought. No question about whether something warrants a call.

Ownership of culture over years. Fractional partners work with your culture. A long-tenured internal leader shapes it.

Capacity that scales with you. Past a certain size the volume of day-to-day HR work genuinely requires a full-time person, and no amount of efficiency changes that.

What fractional gives you that full-time doesn’t

Seniority you couldn’t otherwise afford. At $197,000 you hire one person at one level. A fractional arrangement puts a more senior practitioner on the problems that need one.

Speed. Days rather than months. No recruiting cycle, no ramp.

Breadth. Someone who has seen the same problem across many companies rather than one.

Reversibility. Thirty days’ notice against a hire that takes three months to make and considerably longer to unmake if it’s wrong.

Signs you’ve outgrown doing it yourself

You’ve crossed 15 employees — Title VII, the ADA and the Pregnant Workers Fairness Act now apply
You’ve hired someone in another state, and nobody has checked what that triggered
A manager has asked you how to handle something and you weren’t sure
You’re approaching 50 employees, where FMLA and the ACA employer mandate arrive together
Someone has raised a complaint and you had to look up what to do
Your handbook predates your current headcount

Signs you’ve outgrown fractional

Nobody in this business writes this section, which is exactly why it’s worth writing.

The day-to-day volume genuinely needs someone present full-time — usually somewhere past 150 people, sometimes earlier in operationally complex businesses
You need HR in the room for decisions made daily rather than weekly
You’re building an HR team, and it needs a leader who is yours

When that happens, the right move is to hire. We’ve taken a client from 0 to 200 employees across multiple states and then helped them hire the HR Director who replaced us — defining the role, sitting in on interviews, and handing over a function that already worked rather than a blank page.

We counted that as a win. A firm that can’t tell you when to stop using it is selling you something other than advice.

The switch works both ways

It’s also common to move the other way: a company with an HR person who leaves, or a team that needs senior depth the budget can’t justify full-time. Past roughly 85 people that’s the more frequent shape — not an absence of HR, but a capable person handling the administration well with nobody to ask when something hard lands.

Common questions

How much does fractional HR cost compared to a full-time HR manager?

$24,000 to $78,000 a year against roughly $197,000 fully loaded — 60% to 88% less. But you’re buying fewer hours, not the same role cheaper, and the comparison is only fair if you hold that in mind.

Is fractional HR only for startups?

No. It suits any company where the HR workload is real but not forty hours a week. That includes 120-person manufacturers and restaurant groups as readily as software startups — arguably more so, because hourly workforces generate more compliance exposure per employee.

Can we switch to full-time later?

Yes, and a good fractional partner helps you do it. If yours resists that conversation, that tells you something.

What does a fractional partner handle day to day?

Onboarding and offboarding, the employee questions, the manager who needs a script before a difficult conversation, policy maintenance, and coordination with your payroll provider and broker. See embedded fractional HR for the full scope.

What if we only need help with one thing?

Then buy one thing. Leave administration, a compensation review, and manager training are all standalone work — see leave management, performance and compensation and manager training.

Sources: Salary.com national average for Human Resources Manager; US Bureau of Labor Statistics, Occupational Employment and Wage Statistics; BLS Employer Costs for Employee Compensation. Federal headcount thresholds per Title VII, the ADA, the PWFA, FMLA and the ACA employer mandate.