Building Internal IT vs. Hiring an MSP: A Cost Comparison

The internal IT vs. MSP cost comparison is one of the more consequential decisions growing businesses face. The numbers look superficially straightforward — salary plus benefits vs. monthly retainer — but the real comparison includes substantial hidden costs on both sides that most evaluations miss. Here's an honest framework for comparing the two models, with the cost categories that actually matter.

The Surface-Level Comparison

At the simplest level:

• Internal IT: typical fully-loaded cost of a competent IT generalist is $90k-$150k annually (salary + benefits + employer taxes + equipment + training)
• MSP: typical cost for a similarly-scoped managed services relationship runs $1,500-$5,000 per month for SMB ($18k-$60k annually), scaling with user count

That comparison favors the MSP for businesses under roughly 50-100 users. But it ignores meaningful hidden costs on both sides.

The Hidden Costs of Internal IT

Beyond the headline salary, internal IT requires:

• Tooling — RMM, monitoring, ticketing, security management platforms can run $15k-$50k annually for proper licensing
• Training and certification — ongoing professional development across the rapidly-changing technology landscape
• Backup capacity — what happens when your one IT person is on vacation, sick, or in a meeting? Coverage gaps have real cost.
• Recruiting cost — when the IT person leaves, recruiting their replacement costs $15k-$40k in fees plus the transition gap
• Mistake costs — a single misconfigured firewall, missed patch, or failed backup can cost more than a year of MSP service
• Specialty gaps — internal generalist can't cover specialized needs (compliance, advanced security, SD-WAN, etc.) without contractors
• Off-hours coverage — incidents happen at 2am; one internal IT person can't deliver 24/7 response
• Strategic capacity — internal IT pulled into operational firefighting has no time for strategic work

Fully accounting for these typically adds $30k-$70k annually to the headline salary number.

The Hidden Costs of MSPs

MSPs aren't free of hidden costs either:

• Out-of-scope work — anything not explicitly in the contract is billable at hourly rates; the bill can grow meaningfully
• Project work — implementations, migrations, refreshes are usually separate from the retainer
• Lower familiarity with business context — internal IT knows your business; MSP needs ramp time and may not catch business-specific issues
• Coordination overhead — managing a vendor relationship requires internal time that doesn't show up in MSP pricing
• Vendor lock-in risk — switching MSPs is non-trivial and produces transition costs
• Misaligned incentives — MSPs make more revenue from more billable work; alignment with customer's interest in efficiency requires careful contract design

The Hybrid Model Often Wins

For many businesses in the 50-200 user range, the optimal answer isn't internal-or-MSP — it's both. A small internal IT team (often one person) handles day-to-day support, business context, and vendor coordination. An MSP provides specialized capabilities the internal team can't justify hiring for: 24/7 SOC, advanced security operations, after-hours coverage, specialized expertise. The combined cost is often similar to either pure model alone but produces better outcomes than either alone.

The Right Decision by Business Size

Rough heuristics based on what we typically see produce good outcomes:

• Under 25 users: MSP-only, no internal IT
• 25-75 users: MSP-only or MSP plus an IT-savvy operations role (not dedicated IT)
• 75-200 users: One internal IT lead plus MSP partnership for specialty capabilities — the hybrid model
• 200-500 users: Small internal IT team (2-4 people) plus MSP for security operations and specialized services
• 500+ users: Larger internal team with MSP relationships for specific capabilities like 24/7 SOC, niche expertise, surge support

These are starting points, not rules. Industry complexity, compliance burden, and risk profile shift the optimal balance.

How to Run the Numbers for Your Business

The honest comparison process: estimate fully-loaded internal IT cost including all hidden categories above; estimate MSP cost at the scope you'd actually need (not the minimum); factor in expected variability (vacation coverage, sick days, recruiting, mistakes); evaluate whether the strategic capacity question favors one model or the other; consider whether hybrid might serve better than either pure option. A free 30-minute assessment can help frame the comparison against your specific situation.