HR Person vs. Outsourcing: What Small Businesses Should Know Before Deciding

For small businesses with 20 to 80 employees, the question of whether to hire an HR person or outsource HR comes down to cost, coverage, and where you are in your growth stage. A dedicated HR manager gives you someone in-house, but costs $65,000–$95,000 per year before benefits and overhead. HR outsourcing runs $80–$130 per employee per month and often covers more ground from day one. Neither answer is right for every business — but this guide will help you figure out which is right for yours.

Why Your HR Decision Matters More Than You Think

HR is not just paperwork. At 20 to 80 employees, you are past the stage where the owner or office manager can juggle hiring, compliance, benefits administration, and payroll on the side. Employment law violations, mis-classified workers, and benefits gaps are expensive mistakes. According to the U.S. Department of Labor, wage and hour violations alone cost employers hundreds of millions in back pay each year — and small businesses are not exempt.

The 20-to-80-employee window is also where turnover gets costly. Replacing an employee costs 50–200% of their annual salary depending on the role. Without proper HR infrastructure — onboarding, performance management, competitive benefits — you are more exposed than you realize.

So the decision is not really “do we need HR?” It is “how do we get HR done in the most effective and cost-efficient way?”

Option 1: Hiring an In-House HR Manager

Hiring your first HR person means bringing on a dedicated employee whose full-time job is managing your people operations. Here is what that actually costs and covers.

What Does an HR Manager Cost?

The base salary for an HR manager at a small business typically falls between $65,000 and $95,000 per year depending on your market and their experience level. According to the Bureau of Labor Statistics, the median annual wage for HR managers is around $136,000 nationally — but small business hires typically land at the lower end of the spectrum, trading comp for culture and ownership.

The “loaded” cost — salary plus payroll taxes, health insurance, PTO, 401(k) match, and overhead — adds 25–40% on top of base salary. That means a $75,000 HR manager actually costs you $94,000–$105,000 per year when all is said and done.

What an HR Manager Can and Cannot Do

A single HR generalist is excellent at relationship-based work: recruiting, onboarding, employee relations, and day-to-day questions. They know your people and your culture. But one person cannot be an expert in everything — employment law across multiple states, benefits procurement, workers’ compensation audits, payroll tax compliance, and HR technology all require deep specialization.

At 20–50 employees, you will likely also need to keep a payroll provider (like Gusto or ADP) and a benefits broker on retainer, since most HR generalists are not set up to handle those independently. That adds cost and complexity.

When an In-House HR Hire Makes Sense

• You have 60+ employees and HR demands are genuinely full-time
• You have complex employee relations issues that need a consistent, on-site presence
• Your culture and employer brand are a competitive differentiator that needs dedicated stewardship
• You are scaling rapidly and need someone fully embedded in leadership decisions

Option 2: HR Outsourcing — What It Is and How It Works

HR outsourcing means contracting with an outside firm to handle some or all of your HR functions. This can range from a simple HR software platform to a full-service arrangement that covers payroll, benefits, compliance, and more.

Types of HR Outsourcing

There are a few distinct models worth understanding:

• HR Software Platforms (HRISs): Tools like Gusto, Rippling, or BambooHR automate payroll and basic HR admin. Cost: $8–$25 per employee per month. These are tools, not advisors — someone still needs to manage them.
• HR Consulting / Fractional HR: You hire an outside HR professional on a part-time or project basis. Cost: $50–$150 per hour or flat retainers. Good for specific problems, not ongoing management.
• HR Outsourcing Firms (HROs): Third-party firms take over specific HR functions like benefits administration or compliance support. Cost: $80–$130 per employee per month depending on scope.
• Professional Employer Organizations (PEOs): A PEO co-employs your workforce and handles payroll, benefits, workers’ comp, and compliance under one roof. Cost: typically $80–$150 per employee per month or 2–8% of total payroll. This is the most comprehensive outsourcing option available to small businesses.

What Does HR Outsourcing Cover That a Single Hire Cannot?

The biggest advantage of outsourcing is depth. When you hire one HR manager, you get one person’s knowledge. When you outsource to a firm or PEO, you get a team of specialists — benefits experts, compliance attorneys, payroll specialists, and HR advisors — for less than the cost of that single hire.

For a company with 30 employees paying $100 per employee per month, that is $3,000/month or $36,000/year. Compare that to $94,000+ for a loaded HR manager salary — and you can see why outsourcing is attractive at the 20–60 employee stage.

The PEO Option: Full-Service HR Outsourcing Built for Small Business

A Professional Employer Organization (PEO) is the most complete form of HR outsourcing available to small and mid-size businesses. A PEO becomes a co-employer of your workforce, which means it handles payroll processing, tax filings, benefits administration, workers’ compensation, and compliance — all under one contract.

How Does a PEO Work?

You retain full control of your business decisions: who you hire, how you manage your team, what roles exist. The PEO takes on the administrative employer responsibilities. Your employees get access to Fortune 500-level benefits — medical, dental, vision, 401(k) — that a small business could never negotiate on its own, because the PEO pools hundreds of client companies together for group purchasing power.

According to NAPEO (the National Association of Professional Employer Organizations), businesses that use PEOs grow 7–9% faster and have 10–14% lower employee turnover than comparable businesses that do not. PEO clients also have a lower rate of business failure — a meaningful stat for companies in the 20–80 employee range where execution problems can be fatal.

Based on our analysis of 100+ PEO providers at PEO Marketplace, PEOs are most cost-effective for businesses with 10–150 employees who do not yet have the headcount to justify a full HR department but need real infrastructure.

Want to see how providers compare? Check out our breakdown of Gusto vs. Justworks vs. full-service PEOs or our Insperity cost comparison to see how pricing stacks up across the market.

Side-by-Side Cost Comparison

Cost estimates for a 30-employee company. PEO pricing assumes $100–$150 per employee per month. HR manager loaded cost includes salary, taxes, and benefits at 25–35% uplift.

How to Decide: A Simple Framework

In our experience matching hundreds of businesses with the right HR solution, the decision usually breaks down along a few key questions:

Choose HR Outsourcing (or a PEO) if:

• You have fewer than 60 employees and cannot justify a full-time HR salary
• You want access to enterprise-grade benefits to compete for talent
• You operate in multiple states with varying compliance requirements
• You want to reduce your liability exposure without building an internal legal/HR team
• Your leadership team is stretched thin and needs to offload administrative burden fast

Choose an In-House HR Hire if:

• You have 60–80+ employees and HR is genuinely a full-time operational need
• You have complex, ongoing employee relations situations that need a present, known face
• You have budget to pay competitively and want to invest in culture long-term
• You are planning to scale significantly and want HR embedded in leadership

Note: many businesses use both. A PEO handles the administrative heavy lifting, while a part-time or fractional HR person manages culture, recruiting, and day-to-day people questions. It is not always an either/or decision.

If you are not sure where your business falls, our guide to the best PEOs for small businesses breaks down options by company size, and our free PEO matching service can walk you through what fits your situation.

What Most Business Owners Get Wrong About This Decision

The most common mistake we see is comparing the cost of outsourcing to the cost of a single HR salary — without accounting for what that salary does not cover. One HR manager does not include group health insurance purchasing power, workers’ comp management, multi-state compliance expertise, or HRIS technology. When you add those costs back in, outsourcing almost always wins on value at the 20–60 employee stage.

The second mistake is waiting too long. Many business owners put off the HR decision until there is a crisis — a termination gone wrong, an ADA complaint, an I-9 audit. At that point, the cost of fixing a problem far exceeds what structured HR would have cost to prevent it.

Use our PEO cost calculator to run your own numbers — it takes 60 seconds and gives you a realistic side-by-side comparison for your headcount and industry.

Ready to Figure Out the Right HR Path for Your Business?

Whether you are leaning toward your first HR hire, exploring outsourcing options, or trying to understand whether a PEO is worth the cost, we can help you map it out. PEO Marketplace works with 100+ vetted providers and matches businesses for free — no pressure, no commissions from you.

Book a Free 15-Minute Consultation →

Frequently Asked Questions

At what employee count should I hire an HR person?

Most small businesses are ready for a dedicated in-house HR hire between 60 and 80 employees, when HR demands clearly exceed what one generalist can handle on the side. Below that threshold, HR outsourcing or a PEO typically delivers more coverage at lower cost than a full-time salary.

What is the difference between an HRO and a PEO?

An HRO (HR outsourcing firm) handles specific HR functions you assign to them, while a PEO becomes a co-employer and takes comprehensive responsibility for payroll, benefits, compliance, and HR administration under one agreement. PEOs offer more integrated coverage and typically provide access to better group benefit rates than a standalone HRO.

How much does HR outsourcing cost per employee?

HR outsourcing generally runs $80–$130 per employee per month for most small businesses, depending on the scope of services and the size of your workforce. Full-service PEOs may range from $80–$150 per employee per month, or 2–8% of total payroll, and typically include benefits, payroll, workers’ comp, and compliance support.

Can a PEO replace an HR manager completely?

A PEO handles the administrative and compliance-heavy functions of HR — payroll, benefits, tax filings, workers’ comp — but does not replace the relationship-based and culture-building work that an in-house HR person provides. Many growing companies use a PEO for infrastructure while keeping a part-time or fractional HR person for employee relations and recruiting.

Is HR outsourcing risky for a small business?

Working with a reputable, certified PEO or HRO is generally lower risk than managing HR internally with limited expertise, because these firms specialize in compliance and employ teams of HR and legal specialists. Look for PEOs that are ESAC-accredited or IRS-certified, which signals financial stability and operational accountability.