How to Choose Between HR Outsourcing and In-House: A Simple Guide for SMEs

That HR Manager you're thinking of hiring? The salary alone sits between £45,000-£60,000 annually. Factor in benefits, training, and office space, and you're looking at £70,000+ for your first year. For most SMEs, that's a serious investment.

Your HR needs typically kick in around 20 employees and become critical as you hit 30-40 team members. But here's the challenge: building an internal team isn't your only option, and it might not be your smartest move.

Consider the alternatives. An HR Coordinator costs £25,000-£35,000 per year, while outsourced HR runs £1,500-£5,000 monthly. Both approaches scale differently—outsourced services adapt whether you're managing ten people or a hundred.

The standard formula suggests one HR specialist per 100 employees. But is following formulas the right approach for your business? What matters more: having someone in your office daily, or accessing the right expertise when you need it?

Your decision impacts more than just your budget. The expertise you can access, how quickly you can scale during growth periods, and staying compliant with employment law all vary significantly between approaches.

This guide breaks down both paths to help you choose what fits your business size, growth plans, and budget. We'll also show you how modern HR software like Factorial can support either direction, giving you professional processes regardless of which route you take.

Understanding the HR Needs of SMEs

Small business owners wear many hats—sales, marketing, customer service, finance. Managing your people effectively becomes more complex as your company grows. Getting your HR approach right can make the difference between a thriving business and one that struggles with high turnover and compliance issues.

When does HR become a priority for small businesses?

Most experts suggest bringing on full-time HR support when you reach 10 employees. But timing depends on how you value your time as a business owner. When HR tasks start eating into your productivity and profitability, it's time to consider proper HR solutions.

Creating a dedicated HR function does more than handle paperwork. It increases employee engagement and builds an inclusive company culture. Research shows half of Americans believe lacking an HR department contributes to toxic workplaces. Nearly 50% of small business owners admit their HR structure is unprofessional.

Even businesses not ready for full-time HR professionals can implement professional processes with HR software like Factorial. You get consistent management across recruitment, onboarding, and employee development without the full-time salary.

What is HR outsourcing and how does it work?

HR outsourcing means delegating some or all HR responsibilities to specialist providers instead of managing them internally. These services typically cover recruitment, payroll processing, benefits management, compliance, training, and employee relations.

Outsourcing gives you expert HR knowledge without building an in-house team. Your business can focus on growth, customers, and innovation. For SMEs with limited resources, outsourcing provides flexibility to scale HR support up or down as your business evolves.

Factorial bridges fully outsourced and in-house HR by providing tools that streamline processes while you maintain control over people management. The platform automates administrative tasks while ensuring compliance with changing employment regulations.

Common HR challenges faced by SMEs

Small and medium enterprises face unique HR obstacles due to size and resource limitations:

• Resource constraints: SMEs allocate much less revenue to HR functions compared to larger companies, making it difficult to maintain proper HR services.

• Compliance concerns: Staying current with changing employment laws across multiple jurisdictions presents significant challenges. Without proper systems, small HR teams waste time tracking legal changes manually.

• Recruitment and retention difficulties: Attracting and keeping talented staff while competing with larger companies offering higher salaries and established career paths.

• Performance management: Many small businesses lack formal processes for managing and improving employee performance, leading to frustration when expectations aren't clearly set.

• Work-life balance: Unresolved workplace conflicts cost organisations significant time per week in lost productivity, with 80% of U.S. workers at risk of burnout.

Factorial addresses these challenges through centralised employee data management, automated compliance updates, streamlined recruitment tools, and performance management systems—all designed for SMEs who need enterprise-level HR capabilities without the corresponding price tag.

Understanding your HR needs and choosing the right solution—whether in-house, outsourced, or hybrid supported by HR software—creates a strong foundation for sustainable growth and employee satisfaction.

The Real Cost of HR: What Your Options Actually Cost

The sticker price never tells the full story. Whether you're building an internal HR team or outsourcing the function, hidden costs can double your initial estimates.

What in-house HR actually costs

HR salaries start at €47,710 for a Coordinator and reach €95,421 for an experienced Manager. But that base salary represents barely half your real investment.

Your actual costs include:

• Benefits and taxes: Add 20-30% to any salary for healthcare, pensions, and employer contributions

• Workspace and kit: Desk space, computers, phones, and office furniture

• HR systems: Software licences for payroll, recruitment, and employee management

• Professional development: Courses and certifications to keep skills current

A basic three-person team—HR Manager (€66,196), Payroll Manager (€66,970), and Benefits Manager (€74,458)—costs over €200,000 annually before you factor in any extras. And here's what keeps business owners awake: workplace lawsuit settlements hit €3.45 billion in 2021, showing the price of getting HR wrong.

How outsourced HR pricing works

Outsourced providers flip your cost structure from fixed to flexible. Instead of paying salaries regardless of workload, you pay for what you actually need.

Per-employee models: €3.82 to €5.73 monthly per person, plus platform fees of €28.63 to €47.71. Your costs grow naturally with your headcount.

Payroll percentage: Between 2-8% of total payroll, so fees align directly with your wage bill.

Fixed packages: Set monthly or annual fees for defined service levels, giving you predictable budgeting.

This flexibility matters more than you might think. Outsourcing can cut HR operational costs by 40% and save over 50% compared to full-time internal teams. You eliminate recruitment fees (often 30% of annual salary), reduce overheads, and minimise compliance risks.

Most importantly, you can scale services up during busy periods and down when things quiet down. No more paying for full-time staff when you need part-time support.

Where Factorial fits in your cost equation

Factorial creates a third option between expensive internal teams and hands-off outsourcing.

Consider this: companies typically spend 570 hours yearly on HR administration, costing larger firms up to €394,088. Factorial automates these tasks without requiring you to surrender control of your people management.

The savings add up quickly:

• Setup costs: Avoid the €477-€1,908 fees that full-service providers often charge

• Technology spend: Access cloud-based HR tools without expensive hardware investments

• Compliance support: Get automated regulatory updates without consultant fees

For growing SMEs, this represents the best of both worlds—professional HR capabilities without the corresponding headcount or outsourcing premiums. You keep oversight while eliminating the time-consuming admin that drains your resources.

The Expertise Gap: What You Actually Get

The knowledge depth available through each HR model often determines whether your approach succeeds or falls short. Here's what you're really buying when you choose between internal teams and external providers.

In-house HR: one person, many hats

Small businesses typically hire HR generalists—professionals who juggle everything from recruitment to compliance across the entire employee lifecycle. These people provide flexible coverage, but they can't be experts in every area.

The numbers tell the story. HR Managers (generalist roles) earned approximately €120,449 in 2021, while specialists averaged €45,226 annually. You're paying more for broader coverage, but getting less depth in specific areas where you might need it most.

Company size drives this decision. Businesses under 50 employees usually benefit from generalists who can handle multiple responsibilities. Larger organisations need specialists for complex challenges. Growing SMEs find themselves caught in the middle—needing specialised knowledge without the budget for multiple HR professionals.

Factorial helps bridge this expertise gap by giving generalists access to specialised tools and processes, enabling them to work more effectively across different HR areas.

Outsourced HR: instant access to specialists

Here's where outsourcing shows its strength. Rather than hiring one person with limited bandwidth, you get immediate access to entire teams with deep knowledge across various HR disciplines.

These teams typically include HR Managers, Recruitment Consultants, HR Coordinators, Leadership Coaches, and IR Advocates—all available through one service contract. Instead of hiring multiple specialists internally, you can tap into a complete HR ecosystem when you need it.

This approach eliminates single-person dependency. If your main contact is unavailable, backup support ensures uninterrupted HR service. You're never stuck waiting for one person to return from holiday when urgent HR issues arise.

Factorial works alongside this model by centralising your HR data, making it accessible to both your internal team and external providers for seamless collaboration.

Where outsourcing delivers real value

Compliance represents the strongest argument for outsourcing. These providers employ experts who track changing employment laws and regulations, helping clients stay ahead of legal requirements. Partnering with Professional Employer Organisations (PEOs) can reduce compliance-related fines by up to 30%.

Beyond compliance, outsourcing provides strategic advantages:

• Benchmarking data comparing your practices against industry standards

• Specialist expertise in compensation design and training development

• Improved documentation processes keeping employee records compliant

• Regular audits ensuring alignment with changing employment laws

Consider the cost of getting this wrong. UK SMEs face average employment tribunal claims of £8,500, with over half reporting productivity impacts. Factorial helps mitigate these risks through automated compliance updates and standardised documentation, supporting both internal teams and external HR partners.

The expertise depth available through outsourcing often proves decisive for growing SMEs wanting sophisticated HR capabilities without expanding headcount.

Flexibility and Scalability: Why Your HR Approach Matters More Than You Think

Business growth rarely follows the neat projections in your business plan. Your HR approach needs to flex with reality, not fight against it.

The in-house scaling challenge

Here's what happens when you build internal HR: that person managing ten employees effectively suddenly faces fifty. The informal processes that worked for your startup team become inadequate. You need scalable systems, not just more people.

The transition from ad-hoc to structured HR management often catches growing businesses off-guard. Your HR person becomes overwhelmed, processes break down, and you're left scrambling to hire additional staff or redesign everything.

Factorial addresses this scaling challenge by growing with your business. The same platform that manages your team of twenty can handle two hundred without requiring you to rebuild your entire HR function.

Outsourced HR adapts to your reality

Outsourced HR shines when your growth gets unpredictable. Doubling your workforce in six months? Your internal HR team would struggle, but external providers can scale support to match your needs.

This flexibility matters more than you might expect. HR outsourcing providers adjust their service levels based on your current requirements. Busy recruitment period? They can increase support. Quiet quarter? Scale back the services.

For SMEs experiencing irregular growth patterns, this adaptability prevents you from being stuck with fixed costs during slower periods or overwhelmed during rapid expansion.

Year-round coverage without the gaps

Your business doesn't stop when your HR person takes holiday or falls ill. Many SMEs discover this vulnerability the hard way—one person out, and HR functions grind to a halt.

Factorial helps solve continuity challenges through automated systems that keep running regardless of staffing changes. Time tracking, leave management, and essential HR processes continue seamlessly. Whether you choose in-house, outsourced, or hybrid approaches, the platform ensures your HR functions remain consistent.

Making the Right Choice for Your Business

Your HR decision isn't black or white. The smart choice depends on where your business sits today and where you're heading tomorrow.

Key questions to ask before deciding

Before you commit to either path, ask yourself:

• Can your business afford the total cost of hiring in-house, or would a fractional service be more cost-effective?

• Do you need broad HR expertise across multiple areas, or just specific functions?

• Is your company anticipating growth or a busy period ahead?

• Are your HR requirements becoming increasingly complex?

• Do you currently have doubts about meeting HR compliance requirements?

Your answers reveal which direction makes sense for your specific situation.

Hybrid models: combining in-house and outsourced HR

Smart SMEs often take a mixed approach. You might:

• Keep employee relations and culture management in-house

• Partner with external specialists for compliance audits or recruitment

• Use HR software to automate the administrative heavy lifting

This gives you control where it matters while accessing expertise where you need it most.

How Factorial supports both models with ease

Factorial works regardless of which route you choose. For hybrid setups, Factorial Professionals connects your team seamlessly with external bookkeepers. Changes like new hires, departures, or leave requests sync automatically in real-time.

The platform handles administrative tasks that would otherwise eat into your time, without the premium price of full outsourcing. You get professional HR processes while keeping control of your people decisions.

The Right HR Choice for Your Business

Your HR approach shapes how your business grows. We've walked through the costs, expertise differences, and scalability challenges that matter most to SMEs. The numbers tell part of the story, but your specific situation tells the rest.

The decision comes down to three factors: your current resources, how quickly you're growing, and what expertise gaps you need to fill. Some businesses thrive with internal teams who understand their culture intimately. Others get better results from external specialists who bring fresh perspectives and proven processes.

Many SMEs discover that hybrid approaches work best. You might keep employee relations internal while outsourcing compliance and recruitment. Or use software to handle administration while bringing in consultants for strategic projects.

Factorial fits into any model you choose. Whether you're building an internal team, working with external providers, or mixing both approaches, the platform handles your day-to-day HR administration so you can focus on what matters most to your business.

Your HR needs will change as you grow. The approach that works at 20 employees might not serve you well at 50. Planning for this evolution now saves you from scrambling to adapt later.

The best HR solution isn't the cheapest or the most sophisticated—it's the one that matches where your business is today and supports where you want to go tomorrow.

Ready to see how Factorial can support your HR approach? Let's explore what works best for your business.

Book a Demo 📅

Key Takeaways

Choosing between in-house and outsourced HR requires careful consideration of costs, expertise needs, and growth plans. Here are the essential insights to guide your decision:

• In-house HR costs extend far beyond salaries—expect £70,000+ annually including benefits, equipment, and training for even basic coverage.

• Outsourced HR provides immediate access to specialist expertise and can reduce operational costs by up to 40% whilst offering flexible scaling.

• Hybrid models combining in-house culture management with outsourced compliance often deliver the best value for growing SMEs.

• HR software like Factorial bridges both approaches, automating administrative tasks whilst maintaining control over your people management processes.

• Consider outsourcing when you reach 20+ employees or when HR tasks consume valuable time that could be spent on business growth.

The key is matching your HR solution to your current size and future ambitions. Whether you choose in-house, outsourced, or hybrid approaches, investing in proper HR foundations now creates sustainable growth opportunities whilst protecting against costly compliance risks.

FAQs

Q1. What are the main differences between in-house HR and HR outsourcing? In-house HR involves maintaining an internal team dedicated to managing human resources functions, offering personalised solutions and stability. HR outsourcing, on the other hand, provides access to specialised expertise, cost efficiency, and scalability without the need for ongoing investments in training and resources.

Q2. How can a small business determine which HR activities to keep in-house and which to outsource? Evaluate factors such as costs, available resources, scalability needs, desired level of control, data security concerns, and alignment with long-term business goals. Generally, core tasks that require intimate knowledge of company culture are better kept in-house, while specialised or fluctuating needs may be more suitable for outsourcing.

Q3. Is HR outsourcing a viable option for small companies? Yes, HR outsourcing can be particularly beneficial for small companies. It allows them to access professional HR support and expertise without the need for a full-time in-house team. This approach can help small businesses focus on their core activities while ensuring compliance and effective people management.

Q4. At what point should a growing SME consider implementing formal HR processes? Most HR experts recommend implementing formal HR processes when a business reaches approximately 10-20 employees. However, the exact timing depends on the complexity of your workforce management needs and how much time HR-related tasks are taking away from core business activities.

Q5. How can HR software like Factorial benefit both in-house and outsourced HR models? HR software like Factorial can streamline processes for both in-house and outsourced HR models by automating administrative tasks, centralising employee data, and ensuring compliance updates. It offers a cost-effective solution that allows businesses to maintain control over their HR processes while benefiting from increased efficiency and reduced workload.