In-House vs Outsourced vs Co-Managed IT: The Real Cost Comparison
In-house vs outsourced vs co-managed IT: the real cost comparison for a 10-75 person business, including salaries, coverage gaps, tools, and total cost.
The question sounds simple. Is it cheaper to hire someone to run our IT, or pay a company to do it? The reason it’s hard to answer is that the obvious comparison, one salary against one monthly invoice, leaves out most of the real cost. A single hire and a managed plan are not doing the same job, and the gap between what they cover is where the money quietly goes.
This guide walks through the three real options for a 10-to-75-person business: hiring in-house, fully outsourcing to a provider, and the increasingly common middle path of co-managed IT. We’ll be straight about where each one wins, because the right answer genuinely depends on your size, your needs, and how much risk you can carry. We run all three patterns for clients, so we have no reason to push you toward the wrong one.
The three options
In-house means you hire one or more IT staff onto your payroll. They know your business intimately and they’re always your people. The catch is breadth and coverage: one person can’t be an expert in everything and can’t work around the clock.
Outsourced (fully managed) means a provider handles your IT end to end for a predictable fee. You get a whole team’s worth of skills and coverage hours without carrying the headcount.
Co-managed means you keep your internal IT person or team, and a provider works alongside them, covering the gaps. This is the model many growing businesses land on, and it’s the focus of our switching and co-managed IT buyer’s hub.
The real cost comparison
The honest comparison counts everything, not just the headline number. Here is the shape of it for a typical small business.
| Cost factor | In-house (one hire) | Fully outsourced | Co-managed |
|---|---|---|---|
| Salary / fee | One full salary + benefits | Monthly per-user fee | Reduced internal cost + provider fee |
| Coverage hours | One person’s working hours | Provider’s full coverage | Combined, broader |
| Breadth of skills | Limited to one person | Whole team | Internal depth + provider specialties |
| Vacation / sick / quit risk | Coverage drops to zero | Covered | Covered |
| Tools and licensing | You buy them all | Included or bundled | Often shared |
| Project surge capacity | Limited | Available | Available |
The line that surprises people most is “coverage drops to zero.” A single in-house hire is a single point of failure. The day they’re on vacation, out sick, or hand in their notice, your IT coverage doesn’t degrade gracefully, it stops. We wrote a calm walkthrough of that exact scenario in case it ever happens to you, and it informs how we think about resilience.
What in-house really costs
When people picture an in-house cost, they picture the salary. The true number is higher: salary plus benefits and payroll taxes, plus the security and monitoring tools a provider would otherwise bundle, plus certifications and training to keep skills current, plus the cost of the coverage gaps. None of that is hidden in bad faith, it’s just easy to leave out of a quick mental comparison. To make it fair, you have to put every line on the table. Our in-house vs outsourced vs co-managed cost calculator exists to force exactly that, so the three options get compared apples to apples instead of salary against invoice.
Why co-managed is often the sweet spot
For a lot of growing businesses, the answer isn’t either-or. You have an IT person who’s good and who knows your environment, but they’re underwater, can’t cover nights, and can’t be a security specialist and a help desk and a project manager all at once. Co-managed keeps that person, keeps their knowledge and relationships, and adds the depth and coverage around them.
The worry we hear most from internal IT staff is whether bringing in a provider is the first step to being replaced. It usually isn’t, and a good arrangement is designed to make their job better, not endangered. We addressed that head-on in co-managed IT and your job: how shared IT actually works, because the people already in the seat deserve a straight answer too.
When each one wins
In-house wins when you’re large enough to keep specialized staff busy, when you have constant internal needs, or when you simply prefer people on payroll and the math supports it.
Fully outsourced wins when you have no internal IT, or when you’d rather not manage IT staffing at all and want predictable coverage from day one.
Co-managed wins when you have a capable internal person or small team who’s stretched thin, and you want to add coverage and specialties without losing the knowledge you already have.
The deciding factor is rarely the monthly price in isolation. It’s the total cost once you account for coverage, risk, and the hours your team loses when IT can’t keep up. Run your own numbers, be honest about the gaps, and choose the model that actually fits where your business is now.
Frequently asked questions
Is it cheaper to hire in-house IT or outsource to an MSP?
For most businesses under about 75 people, outsourcing or co-managing usually costs less per year than a fully staffed in-house team once you count everything. A single in-house hire looks cheaper on paper than a managed plan, but one person can’t cover security, help desk, projects, and vacations at once, and the all-in cost of salary, benefits, tools, and training adds up. The honest answer depends on your size and needs, which is exactly what a cost comparison is for.
What does co-managed IT actually mean?
Co-managed IT means you keep your own IT person or small team, and an outside provider works alongside them rather than replacing them. The provider typically covers the things one person can’t do alone: after-hours monitoring, security tooling, project surge capacity, and a backstop when your person is out. Your internal staff keep the institutional knowledge and the relationships; the provider adds depth and coverage. It’s a partnership, not a takeover.
What's the hidden cost of relying on one in-house IT person?
The biggest hidden cost is single-point-of-failure risk. When your one IT person is on vacation, out sick, or quits, your coverage drops to zero. You also pay for breadth you don’t get: no single person is equally strong at help desk, networking, security, and cloud projects. Add the cost of tools, certifications, and the slow ramp time if you ever have to replace them, and the true number is well above the salary line.
When does in-house IT make sense?
Larger organizations with constant, specialized internal needs often justify a full in-house team, and some businesses simply prefer having staff on payroll. The key is honest math: count salaries, benefits, the tools an MSP would otherwise provide, training, and the cost of coverage gaps. For many 10-to-75-person businesses that math favors outsourced or co-managed, but for some it genuinely favors in-house. Run the numbers for your own situation rather than assuming.
How do I compare the real cost of each option?
List every cost, not just the obvious one. For in-house: salary, benefits, payroll taxes, tools, training, and the value of lost coverage when that person is away. For outsourced: the monthly fee plus any project and licensing costs. For co-managed: your reduced internal cost plus the provider’s fee. Then weigh response time, coverage hours, and risk. A simple calculator that forces you to enter all three sets of numbers makes the comparison fair instead of guesswork.
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