The MSP vs. in-house IT decision is fundamentally a cost, capability, and risk calculation. This guide provides a detailed total cost of ownership (TCO) comparison to help you make a data-driven decision.
Total Cost of Ownership: In-House IT
Direct Costs (Single IT Employee)
| Cost Category | Annual Range |
|---|---|
| Base salary (IT generalist/admin) | $65,000-$95,000 |
| Benefits (health, dental, 401k, PTO) | $15,000-$30,000 |
| Payroll taxes | $5,000-$7,500 |
| Training and certifications | $2,000-$5,000 |
| Tools and software licenses | $3,000-$8,000 |
| Total per employee | $90,000-$145,500 |
Hidden Costs
| Hidden Cost | Annual Impact |
|---|---|
| Recruitment (if turnover occurs) | $10,000-$25,000 per hire |
| Coverage gaps (vacation, sick, after-hours) | $5,000-$15,000 |
| Knowledge concentration risk (single point of failure) | Unquantifiable but significant |
| Opportunity cost (managing IT vs. managing business) | Varies |
| Tool/platform licensing for one person | Often enterprise pricing required |
Average IT employee turnover is 13.2% (Bureau of Labor Statistics, 2024). Each replacement costs 50-200% of annual salary when accounting for recruitment, onboarding, and productivity loss.
Capability Gaps
A single IT generalist cannot match an MSP's breadth. Typical gaps:
- Limited cybersecurity expertise (security requires specialized skills)
- No 24/7 coverage (your IT person sleeps, takes vacation, gets sick)
- Narrow skill set (one person can't master networking, security, cloud, compliance, AND helpdesk)
- No disaster recovery redundancy
- Limited vendor relationships for enterprise pricing
Total Cost of Ownership: MSP
MSP Costs (50-Person Company)
| Service Model | Monthly Cost | Annual Cost |
|---|---|---|
| Comprehensive managed IT ($150-$300/user) | $7,500-$15,000 | $90,000-$180,000 |
| Basic managed IT ($100-$150/user) | $5,000-$7,500 | $60,000-$90,000 |
| Co-managed IT ($75-$125/user) | $3,750-$6,250 | $45,000-$75,000 |
What's Included
A comprehensive MSP typically includes:
- 24/7 monitoring and alerting
- Helpdesk support (unlimited tickets)
- Cybersecurity (EDR, email security, MFA management)
- Backup and disaster recovery
- Patch management and updates
- Vendor management
- vCIO strategic advisory
- Compliance support
- Scalable team (multiple specialists on call)
MSP Advantages
- Breadth of expertise: Access to network engineers, security specialists, cloud architects, compliance experts
- 24/7 coverage: No gaps for vacation, illness, or after-hours
- Scalability: Instantly scale up or down with business needs
- Predictable costs: Fixed monthly fee vs. variable in-house costs
- No recruitment risk: MSP handles staffing
- Enterprise tools: MSPs deploy enterprise-grade tools across clients, spreading cost
Side-by-Side Comparison
25-Person Company
| Factor | In-House IT (1 person) | MSP |
|---|---|---|
| Annual cost | $90,000-$145,000 | $37,500-$90,000 |
| 24/7 coverage | No | Yes |
| Security depth | Limited | Comprehensive |
| Scalability | None | High |
| Verdict | Over-staffed or under-capable | Clear winner |
50-Person Company
| Factor | In-House IT (1-2 people) | MSP |
|---|---|---|
| Annual cost | $90,000-$290,000 | $75,000-$180,000 |
| 24/7 coverage | Partial (2 people) | Yes |
| Security depth | Moderate | Comprehensive |
| Scalability | Limited | High |
| Verdict | MSP usually better value | Strong option |
100-Person Company
| Factor | In-House IT (2-3 people) | MSP | Hybrid |
|---|---|---|---|
| Annual cost | $180,000-$435,000 | $150,000-$360,000 | $200,000-$350,000 |
| 24/7 coverage | Possible (3 people) | Yes | Yes |
| Security depth | Good with specialization | Comprehensive | Best of both |
| Scalability | Moderate | High | High |
| Verdict | Viable but expensive | Good option | Often optimal |
200+ Person Company
At this scale, most businesses benefit from a hybrid model: in-house IT leadership and staff for day-to-day operations, with MSP providing specialized services (cybersecurity, after-hours support, compliance, strategic advisory).
The Hybrid/Co-Managed Model
For companies between 50-200 employees, co-managed IT often provides the best balance:
- Internal IT staff handles daily operations, user support, and institutional knowledge
- MSP provides cybersecurity, after-hours coverage, strategic planning, and specialized projects
- Cost: in-house staff salary + $75-$125/user/month for MSP services
- Benefits: combines internal knowledge with MSP expertise and coverage
Frequently Asked Questions
At what company size does in-house IT make more sense than an MSP?
Generally above 75-150 employees, depending on industry complexity and IT needs. Below 75, MSPs are almost always more cost-effective. Above 150, hybrid models (in-house + MSP) typically provide the best balance.
Can I start with an MSP and transition to in-house later?
Yes, and this is common. Many growing companies start with full MSP management, then hire internal IT staff and transition to a co-managed model as they grow. A good MSP supports this transition rather than resisting it.
What about companies with highly specialized IT needs?
Industries with unique IT requirements (healthcare, financial services, manufacturing with OT networks) may need specialized in-house expertise regardless of company size. However, even these companies often benefit from MSP support for general IT, cybersecurity, and after-hours coverage.
How do I account for the risk of a single IT employee leaving?
Factor in recruitment costs ($10,000-$25,000), transition time (1-3 months of reduced capability), and knowledge transfer risk. MSPs eliminate this risk entirely since they maintain team depth and institutional documentation.
Is one MSP better than one IT employee for a small business?
For businesses under 50 employees, almost always yes. An MSP provides broader capabilities, 24/7 coverage, and specialized security expertise at a comparable or lower cost than a single IT employee.
The Bottom Line
The MSP vs. in-house decision comes down to three factors: your company size, your industry's IT complexity, and your growth trajectory. For most businesses under 100 employees, MSPs deliver better capabilities at lower cost. Above 100, hybrid models typically optimize for both control and expertise.
For more on evaluating MSPs, see our complete guide and evaluation framework.
-- The MSP Finder Team