In-House HR vs. Outsourcing: A Cost Breakdown

Growing companies reach a point where HR takes more time than expected, and the question becomes whether outsourcing makes financial sense.

We have this conversation every day, and one thing stands out: Most companies underestimate what they're already spending on HR, and overestimate what outsourcing costs.

This guide breaks down what in-house HR really costs, what a PEO or other HR outsourcing services typically include, and how to decide between HR outsourcing vs in-house for your business.

What In-House HR Actually Costs

The biggest mistake we see is treating HR as one salary line in the budget. That number matters, but it doesn't reflect what your business spends to recruit, support, train, insure, and equip an HR professional. It also doesn't account for everything that still lands on your finance team, operations leaders, or business owner. To compare HR outsourcing vs. in-house fairly, it’s important to see the full picture, starting with the number that's easiest to spot.

The Visible Costs of an HR Manager

According to the U.S. Bureau of Labor Statistics, the median annual pay for an HR manager in the United States is approximately $140,030. Salary is only one part of the total cost, as employers must also account for payroll taxes, health insurance, retirement contributions, paid leave, workers’ compensation, and other benefits.

The Bureau of Labor Statistics reports that wages and salaries represent 69.9% of total compensation in private industry, with benefits accounting for the remaining 30.1%. Based on those averages, the fully loaded cost of employing one HR manager is approximately $200,000 per year.

The Hidden Costs of HR Tasks

The larger costs don't appear in the HR budget at all. Instead, they're spread across finance, operations, executive leadership, and multiple outside vendors.

Benefits purchasing power

Health insurance continues to be one of the fastest-growing employer expenses. The average employer-sponsored health plan cost reached $17,496 per employee in 2025, up 6% from the previous year, and costs will exceed $18,500 per employee in 2026.

If you're a smaller employer, you're likely purchasing coverage through the small-group market, where negotiating leverage is limited. Larger employer groups often have access to funding arrangements and purchasing options that small-group buyers don't. That difference can meaningfully affect your annual benefits spend.

Compliance exposure

A Fair Labor Standards Act (FLSA) misclassification can trigger overtime liability, penalties, and legal costs. In FY2025, the Department of Labor recovered an average of $1,465 in back wages per worker in misclassification enforcement actions. Affordable Care Act reporting errors can trigger IRS penalties. As companies expand into additional states, payroll tax rules, leave laws, wage requirements, and employment regulations become more difficult to manage consistently.

These aren't routine operating expenses. They're unexpected costs that surface months after the original mistake.

Payroll tax filing responsibility

Payroll doesn't end when employees receive a paycheck. Federal, state, and local payroll tax filings, quarterly reporting, year-end forms, new-hire reporting, garnishments, and tax deposits all require accuracy and consistent deadlines.

Many growing companies assign those responsibilities to someone whose primary role is accounting, finance, or HR. As workloads increase, so does the risk of missed deadlines, corrections, interest, and penalties.

Your leadership team is doing HR work

HR responsibilities don't stay inside HR. Finance leaders answer benefits questions. Operations managers handle employee issues. Business owners approve leave requests, research compliance questions, or review handbook updates after hours.

SHRM's 2025 State of the Workplace report found that 62% of HR departments are operating beyond their typical capacity, while 57% report they don't have sufficient staff to meet current demands. When HR capacity runs short, the work moves somewhere else. That hidden labor cost rarely appears in an HR budget, but it still affects productivity across the business.

Managing multiple HR vendors

Many growing businesses also manage several separate HR vendors for payroll processing, employee benefits, workers’ compensation, or HR software. Each relationship brings separate billing cycles, support contacts, renewals, contracts, implementation updates, and reporting.

Those administrative hours don't appear on an invoice, but they represent real operating costs.

What HR Outsourcing Actually Costs

Business leaders new to HR outsourcing often expect pricing to be significantly higher than managing HR internally. In many cases, the opposite is true.

The most common model among HR outsourcing companies is a professional employer organization (PEO), where pricing is typically structured as a per-employee, per-month (PEPM) fee. The exact investment varies based on company size, industry, workforce location, and the services selected, so there isn't one standard price.

What matters more is what that fee replaces. Depending on your service model, that typically covers payroll processing and tax administration, benefits administration, workers' compensation, HR compliance guidance, and HR technology.

Rather than coordinating several vendors and expanding internal HR headcount, many businesses consolidate those responsibilities under one dedicated service team.

At G&A Partners, clients can choose from multiple HR service models depending on how much support they need. Some organizations use a full PEO service arrangement, which includes co-employment. Others choose an ASO service model that provides dedicated HR support without co-employment, or an HCM solution centered on technology and service.

If you're comparing HR outsourcing companies, focus on more than the monthly fee. Ask what's included, who supports your account, what response time is guaranteed for compliance questions, what service-level expectations are documented, and which responsibilities remain with your internal team.

Total Cost of Ownership: In-House vs. Outsourced at 50 Employees

Comparing an HR salary to a monthly outsourcing fee doesn't tell you much. A more useful comparison looks at the total cost of supporting your workforce, including payroll administration, benefits management, compliance, technology, and the internal time required to keep everything running. That's the comparison finance leaders usually care about because it reflects what the business is spending today, not just what's listed in one department's budget.

SHRM also reports HR spending has grown to 2.4% of operating expenses industrywide, up from 1.4% in 2022 and double the 1.2% reported in 2017.

A 50-person company often reaches an inflection point. The organization has grown beyond owner-led HR, but it usually isn't large enough to justify specialists in payroll, benefits, compliance, and employee relations. One HR professional often becomes responsible for all of it while finance leaders, operations managers, and executives fill the gaps. In practice, that can mean the CFO reviewing benefits invoices, an operations manager fielding a leave-of-absence question, and the owner drafting a handbook update over the weekend.

A coordinated model changes that picture by combining HR expertise, payroll administration, employee benefits, compliance support, and technology under one roof, instead of splitting them across whoever has time. For companies evaluating HR outsourcing services, total value comes from reducing complexity as much as reducing cost.

When In-House HR Makes Sense and When It Doesn't

The right decision depends on your workforce, internal resources, growth plans, and the complexity your business manages every day.

In-house HR often makes sense when:

• Your company has more than 150 employees and multiple dedicated HR specialists.
• Administrative work is already distributed across payroll, benefits, compliance, and employee relations teams.
• HR leadership primarily focuses on workforce strategy, leadership development, and organizational planning.
• Your workforce is large enough to support specialized internal expertise.

HR outsourcing often makes sense when:

• Your company has fewer than 150 employees and one or two people are responsible for nearly every HR function.
• Health insurance costs continue increasing while your negotiating leverage remains limited.
• You're expanding into additional states and don't have dedicated resources to track new registration, payroll tax, and leave requirements.
• A key HR employee recently left, creating a significant knowledge gap.
• Business owners, finance leaders, or operations managers are spending too much time managing HR instead of focusing on growth.
• Recruiting, onboarding, payroll, benefits, HR compliance, and handbook updates are landing on the same one or two people, and responsibilities keep expanding even when headcount doesn't.

If you're trying to compare HR outsourcing and in-house HR efficiency, focus on more than who performs the work. Compare how much work exists today, how much risk accompanies it, and whether your current structure can continue supporting the business over the next several years.

Benefits of HR Outsourcing When You Work With G&A

A 15-person manufacturing company and a 200-person professional services firm don't need the same HR support. The manufacturer might need workers' compensation and safety compliance handled first. The services firm is more likely to lean on benefits administration and multistate compliance as it hires across new markets. That's why G&A offers multiple HR outsourcing service models instead of a one-size-fits-all approach.

Every G&A client gets a dedicated Client Success Manager and Payroll Specialist, plus direct access to HR advisors. That service model is reflected in G&A's NPS, which is twice the HR outsourcing industry average.

Depending on the services you choose, G&A can manage:

• Payroll processing and tax filing
• Employee benefits administration
• Open enrollment and carrier billing
• Workers' compensation administration and claims management
• Multistate compliance guidance
• HR technology and employee self-service tools

Meanwhile, your business continues to control:

• Hiring decisions
• Performance management
• Compensation decisions
• Employee relations
• Company culture
• Business strategy

Co-employment is the administrative and financial structure that allows G&A to provide PEO services. ASO and HCM clients receive the same dedicated support without that structure. Either way, it doesn't change who leads your employees or makes business decisions.

Does Outsourcing HR Make Financial Sense?

The answer depends on your current structure, your growth plans, and how much hidden cost exists in your existing approach.

When companies compare only salaries, keeping HR in-house appears less expensive. When they compare the full picture, including benefits purchasing power, compliance support, payroll administration, technology, and leadership time, the numbers tell a different story.

We've seen many businesses with fewer than 150 employees discover that their current HR costs are higher than expected. Start by evaluating your own numbers.

If yours turns out higher than expected too, G&A Partners is here to help.