Fractional HR vs. Full-Time HR: The Real Cost Comparison

A founder with 25 employees starts feeling the HR pressure and thinks about hiring someone full-time. They post the job, get resumes, and realize anyone worth hiring wants $60,000 minimum. Then they do the real math.

The true cost of a full-time HR hire

Salary is just the starting point. Here’s what a full-time HR manager actually costs:

That’s $7,166 per month for someone who — at 25 employees — will spend a significant portion of their time on tasks that don’t require that level of experience. And if they leave, you start the whole process over.

What you actually need at 15–40 employees

At this stage, most companies need about 15–20 hours of real HR work per month. That’s not a full-time job. It’s onboarding new hires, handling employee questions, keeping compliance current, reviewing offer letters, and occasionally working through a performance issue. A fractional HR partner covers all of it — at a higher experience level — for $2,500–4,000/month. Roughly 30–45% of a full-time hire with more experience and no overhead.

The experience difference matters more than most founders realize

An HR generalist with 2–3 years of experience will handle the obvious stuff fine. But the moment you have a complicated termination, an employee who threatens legal action, or an investor asking about your people infrastructure, you want someone who has been there before. Fractional HR gives you that experience level without paying for it full-time.

When does a full-time hire make sense?

Generally around 75–100 employees, or when you’re hiring more than 5–8 people per month consistently. Many of our clients make that transition and come to us to help hire and onboard their first in-house HR person — which is one of the best uses of a fractional HR relationship at that stage.