MSP vs In-House IT: What Makes Sense for Rockville Businesses?

At some point, usually between 20 and 60 employees, every growing business faces the same fork: hire our own IT person, or sign with a managed service provider? Both answers are defensible, both can go badly, and the salespeople on either side of the question have an obvious interest in your choice. Here is the comparison with the incentives stripped out, aimed at businesses in Rockville and the surrounding I-270 corridor.

The cost math, honestly

Start with what an internal hire actually costs. In Montgomery County, one of the more expensive labor markets in the country, a capable IT generalist (the person who can handle helpdesk, networking, and basic security) commands roughly $75,000 to $110,000 in salary. Add 25 to 35 percent for payroll taxes, health insurance, and retirement, plus tooling (monitoring software, ticketing, security products the employee needs to do the job), training, and recruiting costs. The realistic all-in figure for one solid IT employee is $110,000 to $160,000 per year.

Now the MSP side. Fully managed IT typically runs $100 to $250 per user per month (we break the ranges down in our managed IT pricing guide). For a 40-person company at a representative $150 per user, that is $72,000 per year: less than one internal hire, for a service that includes a whole team, 24/7 monitoring, and an enterprise security stack no individual could buy or run alone.

On raw cost, the MSP usually wins below roughly 75 to 100 employees. But cost is not the whole question, and pretending it is leads to bad decisions in both directions.

What in-house IT does better

• Presence and context. Your person is in the building. They know that the conference room HDMI cable is flaky, that the CFO hates change, and that the lab instrument in suite 300 runs on software from 2014. That context is genuinely valuable and takes an MSP months to approximate.
• Immediate hands. When a machine dies mid-presentation, someone walks down the hall. No ticket, no queue.
• Dedicated attention. An employee works only on your problems and your roadmap. An MSP splits attention across dozens of clients, and you will occasionally feel it.
• Line-of-business depth. Companies with specialized systems (a biotech's laboratory information system, a law firm's document management platform) benefit from someone who lives inside that software daily.

What an MSP does better

• Breadth of expertise. One person cannot be strong at helpdesk, networking, cloud architecture, and security simultaneously. An MSP has specialists in each, and you rent slices of all of them.
• Coverage. Your employee takes vacations, gets sick, and sleeps. Monitoring platforms and after-hours teams do not. Single-person IT departments are also a single point of failure: when that person resigns, they walk out with the passwords and the undocumented knowledge.
• Security posture. Modern security tooling (managed detection and response, a security operations center watching alerts overnight) is priced and staffed for fleets, not for one company. This is the area where a lone generalist falls furthest behind.
• Predictable cost that scales. Hiring employee number two in IT is a $100,000+ step function. Adding ten users to an MSP agreement is a line item.
• Continuity and documentation. Decent MSPs are contractually obligated to document your environment. Your network stops living in one person's head.

Where each model breaks down

In-house IT breaks down at the edges of one person's capacity: the vacation ransomware incident, the security questionnaire nobody can answer, the burnout from being on call 365 days a year. It also quietly caps your ambitions, because major projects (a cloud migration, an office buildout) exceed what one person can do while also answering helpdesk tickets, which is when businesses bring in outside IT project management anyway.

MSPs break down when the relationship is managed on autopilot: response times drift, the quarterly strategy meetings stop happening, and you discover at renewal that you have been paying for services nobody used. They also frustrate companies that need constant physical presence or deep line-of-business expertise the provider does not have. Choosing the wrong MSP is the biggest risk in the model, which is why we wrote 12 questions that matter when choosing an MSP.

The Rockville factor

The decision has a particular shape along the I-270 corridor. Rockville and its neighbors are dense with biotech and life-science companies, law firms, medical and dental practices, financial advisors, and federal contractors serving agencies on both sides of the D.C. line. Three consequences follow:

• Compliance pressure is high. HIPAA, FINRA, CMMC, and client security audits are everyday realities here. These favor either a specialized MSP or a genuinely senior internal hire, not a lone junior generalist.
• IT labor is expensive and mobile. You are competing for talent against federal contractors and biotechs that pay more than most small businesses can. Expect recruiting to take months and retention to be a live risk.
• Growth is lumpy. Funded biotechs and contract-driven firms can double headcount in a year. An MSP absorbs that; a one-person IT department does not.

A simple decision framework

• Under about 30 employees: an MSP is almost always the right answer. A full-time hire would be idle half the week and overwhelmed the other half.
• 30 to 75 employees: MSP for most, unless you have unusual on-site or line-of-business needs. If you already have a good IT person, keep them and add an MSP underneath (see below) rather than forcing a choice.
• 75 to 150 employees: this is genuinely situational. Many businesses run a hybrid: one or two internal IT staff who own strategy and user experience, with an MSP providing helpdesk depth, after-hours coverage, and security operations.
• 150+ employees: you likely need internal IT leadership regardless; the question becomes which functions to keep outsourced, which is a composition question more than a vendor question. Our composition strategy service exists for exactly this.

The middle path most articles skip

This is not actually a binary. Co-managed IT, where an internal IT employee and an MSP share the work with clearly divided responsibilities, is the fastest-growing model for companies in the 50 to 250 range, and it resolves most of the tradeoffs above: presence and context from your employee, depth and coverage from the provider. We wrote a full guide in What is co-managed IT?, and if you are starting from zero, the fundamentals are in What is a managed service provider?

Whichever direction you lean, run the numbers for your actual headcount, be honest about your compliance obligations, and remember that both paths are reversible, just slowly. The businesses that regret their choice are usually the ones that made it by default instead of on purpose.