If you are comparing in-house IT vs outsourced IT support, there is a good chance something has forced the question. Maybe your IT person just handed in their notice. Maybe you are drowning in cybersecurity compliance requirements and your solo technician cannot keep up. Or maybe you simply looked at the numbers last quarter and thought, “There has to be a better way.”

You are not alone. Thousands of UK businesses wrestle with this exact decision every year. The problem is that most comparisons gloss over the real figures. They quote a salary range, mention a monthly fee, and call it a day.

This post does something different. We will break down every cost, including the ones most guides conveniently ignore, for both models. Then we will run the numbers side by side for a real scenario: a 30-person business based in London. By the end, you will have enough data to make a confident decision for your own organisation.

What Does In-House IT Actually Cost in 2026?

The cost of hiring an in-house IT manager in the UK goes far beyond the advertised salary. Once you add statutory contributions, tools, training, and recruitment, the true figure is typically 1.3 to 1.5 times the gross salary.

According to the Robert Half 2026 UK Salary Guide, an IT manager outside London earns between £46,250 and £62,750 per year. In London, that range jumps to £63,000 to £85,250. These are base salaries only. The employer’s costs sit on top.

Here is what you need to budget for beyond the headline number.

Employer National Insurance: As of April 2025, the employer NI rate sits at 15% on earnings above the £5,000 secondary threshold. For a £55,000 salary, that adds roughly £7,500 per year.

Pension contributions: Auto-enrolment requires a minimum 3% employer contribution. On a £55,000 salary, that is another £1,650.

Recruitment costs: Agencies typically charge 15 to 20% of the annual salary. For a £55,000 hire, expect a one-off fee of £8,250 to £11,000.

Training and certifications: Keeping one person current across Microsoft, cybersecurity, cloud, and networking costs between £2,000 and £5,000 annually.

Tooling and licences: Your IT manager needs remote monitoring and management (RMM) software, endpoint detection, backup tools, and a ticketing system. Budget £3,000 to £6,000 per year.

The Hidden Costs Most Businesses Miss

Beyond the obvious line items, in-house IT carries several costs that rarely appear in the initial budget. These are the figures that catch business owners off guard.

1. Holiday and sickness cover gaps. When your single IT person takes two weeks off, who handles a critical outage? Often, nobody. Downtime during these gaps can cost thousands in lost productivity.
2. Single point of failure risk. If your IT manager leaves, you face a three to six month hiring cycle. During that window, your systems run without expert oversight.
3. Limited breadth of expertise. One person cannot be an expert in networking, cybersecurity, cloud infrastructure, Microsoft 365 administration, and strategic planning simultaneously. Gaps in knowledge become gaps in your defences.
4. Opportunity cost. An IT manager buried in password resets and printer issues has no bandwidth for strategic work that actually moves your business forward.
5. Salary inflation. IT salaries in the UK have risen consistently year on year. Your costs will climb, but your coverage stays the same.
6. Equipment and workspace. A laptop, monitors, a desk, and floor space add another £2,000 to £4,000 in the first year.

When you total all of this up for a London-based IT manager on a £55,000 salary, the realistic first-year cost lands somewhere between £75,000 and £90,000. That is the number you should be comparing against, not the job advert figure.

How Much Does Outsourced IT Support Cost in the UK?

Outsourced IT support in the UK is typically priced per user, per month. The exact cost depends on the level of service, the complexity of your setup, and whether you need extras like 24/7 cover or on-site visits.

As of 2026, here are the standard pricing tiers for UK managed IT providers:

A quick rule of thumb for budgeting: multiply your headcount by £80 for a reasonable mid-range estimate. A 30-person business would land at roughly £2,400 per month, or £28,800 per year.

One thing to watch out for: providers quoting significantly below £50 per user for “fully managed” support are often cutting corners. Common shortcuts include stripped-back security, overseas helpdesks with slow response times, and hidden charges for anything beyond basic troubleshooting. Always check what is actually included before comparing on price alone.

Side-by-Side Cost Comparison: A 30-Person London Business

Theory is useful, but real numbers are better. Let us run the maths for a specific scenario: a 30-person business based in London, comparing a single in-house IT manager against a fully managed IT support provider.

That is a potential saving of almost £50,000 per year, and the outsourced option provides access to a full team of specialists rather than a single generalist. You get cybersecurity experts, cloud engineers, and helpdesk support staff, all for less than the loaded cost of one employee.

These figures will shift based on your specific needs. A business with complex server infrastructure or strict regulatory requirements might sit at the higher end of managed service pricing. An organisation with very straightforward IT needs might pay less. The direction, though, is consistent: for most SMEs with fewer than 60 staff, outsourcing costs significantly less than building in-house.

The Pros and Cons Beyond the Price Tag

Cost matters, but it is not the only factor. Here is an honest look at the non-financial trade-offs of each model.

Neither model is perfect. In-house IT gives you proximity and direct control. Outsourced IT gives you depth, resilience, and predictability. The question is which set of trade-offs fits your business better right now.

What Has Changed in 2026 That Tips the Scales

This is not a recycled comparison from three years ago. Several 2026-specific factors are actively shifting the maths in favour of outsourcing for most small and mid-sized businesses.

The employer NI increase. From April 2025, the employer National Insurance rate rose to 15% and the secondary threshold dropped to £5,000. This directly inflated the cost of every in-house hire. For an IT manager on £55,000, the NI bill alone is now roughly £7,500 per year. You can verify the current rates on the HMRC National Insurance rates page (gov.uk).

Tightening cyber insurance requirements. UK insurers are increasingly demanding proof of multi-factor authentication, endpoint detection and response (EDR), and immutable backups before they will underwrite a policy. Meeting these standards requires specialist tooling and oversight that a solo IT manager often struggles to maintain alongside day-to-day support.

AI governance as a new IT responsibility. Staff are using tools like Microsoft Copilot, ChatGPT, and other AI assistants. Someone needs to govern how company data interacts with these platforms. This is a brand new line of work that did not exist two years ago, and it sits squarely on IT’s plate.

The rising compliance bar. UK GDPR enforcement continues to tighten. Cyber Essentials certification is becoming a prerequisite for government tenders and supply chain contracts. Managed providers like GR.IT already hold these certifications and bake compliance into their standard service.

Which Model Is Right for Your Business?

There is no universal answer. The right model depends on your headcount, growth plans, compliance needs, and how much internal IT capability you already have. Here is a quick framework to guide your decision.

Outsourcing is likely the better fit if:

• You have fewer than 60 employees
• You do not have budget for a full IT team (3+ people)
• Cyber insurance or compliance requirements are growing
• You are scaling and need IT costs to flex with headcount
• Your current IT person is spending all their time on reactive fixes

In-house may still make sense if:

• You have 100+ employees and can build a team with real depth
• You run highly specialised, proprietary systems that need deep institutional knowledge
• You operate in a sector where on-site IT presence is a regulatory requirement

A hybrid (co-managed) model works well if:

• You have 50 to 150 employees with one or two internal IT staff
• Your in-house team is good at day-to-day support but needs specialist backup for security, strategy, and out-of-hours cover
• You want to keep institutional knowledge in-house while outsourcing the heavy lifting

From our experience working with SMEs across London and Kent, the sweet spot for most businesses under 60 staff is fully outsourced. Between 50 and 150, hybrid tends to deliver the best of both worlds. Above 150, a dedicated in-house team starts to make financial sense, though many large organisations still use MSPs for specialist security work.

What Does a Managed IT Service Actually Include?

A managed IT service is a proactive, ongoing partnership with an external provider. Rather than paying to fix things after they break, you pay a predictable monthly fee for continuous monitoring, maintenance, security, and strategic planning.

A comprehensive managed IT package in 2026 typically covers:

• Helpdesk support for day-to-day issues (password resets, software problems, connectivity troubleshooting)
• 24/7 system monitoring to catch problems before they cause downtime
• Cybersecurity tools including EDR, email filtering, and automated patching
• Cloud backup and disaster recovery with immutable backups to protect against ransomware
• Microsoft 365 management covering licensing, user provisioning, and configuration
• Quarterly strategic reviews with a virtual CIO who plans your IT roadmap and manages budgets
• Vendor management handling relationships with your internet provider, phone system, and software suppliers

GR.IT Consultancy includes all of the above as standard across its managed IT support packages, alongside dedicated cybersecurity services and cloud hosting and backup solutions. With over 25 years in the industry and clients including AXA Investment Managers and Dolphin Square, the team understands what London and Kent businesses need from their IT partner.

The Bottom Line

For most UK businesses with fewer than 60 employees, outsourced IT support delivers broader expertise, stronger security, and more predictable costs than hiring in-house. The numbers back this up: our worked example showed a potential annual saving of almost £50,000 for a 30-person London business, and that is before you factor in the resilience of a team-based model versus a single point of failure.

Every business is different. Your headcount, systems, compliance obligations, and growth plans all shape the right answer. The key is to make the decision based on the full picture, not just a salary figure or a monthly quote.

Want to see what the numbers look like for your specific business? GR.IT offers a free IT audit where we map out the costs of both models side by side, tailored to your setup. Book a free IT audit with GR.IT and get a clear answer in a single conversation.

Are you currently running in-house, outsourced, or somewhere in between? We would love to hear what is working and what is not.

Frequently Asked Questions

How much does outsourced IT support cost in the UK?

Most UK managed IT providers charge between £60 and £150 per user per month in 2026, depending on the level of service. A fully managed package for a 30-person business typically costs £1,800 to £4,500 per month. This covers helpdesk support, 24/7 monitoring, cybersecurity, cloud backup, and strategic planning. You can see GR.IT’s pricing for a transparent breakdown.

Is it cheaper to outsource IT or hire in-house?

For most UK businesses with fewer than 60 employees, outsourcing is significantly cheaper. A single in-house IT manager in London costs £75,000 to £90,000 per year once you add employer NI at 15%, pension, recruitment fees, tools, and training. Outsourcing the same scope to a managed provider typically costs 40 to 60% less while providing access to a full team of specialists.

What does managed IT support include?

A fully managed IT service includes a helpdesk for day-to-day issues, 24/7 system monitoring, cybersecurity tools such as EDR and email filtering, cloud backup and disaster recovery, Microsoft 365 management, and quarterly strategic reviews with a virtual CIO. Some providers also handle vendor management and hardware procurement.

What are the risks of outsourcing IT support?

The main risks are reduced on-site presence, dependency on the provider’s quality, and potential communication gaps. You can mitigate these by choosing a UK-based provider with certifications like Cyber Essentials, clear response-time SLAs, and a dedicated account team. Always check references and ask about their escalation process before signing.

When should a business outsource IT support?

Consider outsourcing when your in-house IT person is overwhelmed, when compliance or cyber insurance requirements are growing, when you are scaling and need flexible IT costs, or when you find yourself spending more on reactive fixes than proactive improvement. For most SMEs under 60 employees, outsourcing offers better coverage at a lower total cost.