Managed IT Support
What is managed IT support? What's included, what's excluded and what it costs
Managed IT support explained for UK businesses: what a monthly contract covers, what is usually excluded, how SLAs and pricing work and when it beats break-fix.
By Dig IT SolutionsUpdated 8 September 20268 min read
Short answer
Managed IT support is an ongoing contract where an external provider monitors, maintains, secures and supports your computers, servers, network and cloud services for a fixed monthly fee, usually priced per user or per device. It replaces the call-us-when-it-breaks model with patching, monitoring, a helpdesk and planned improvements, governed by a service level agreement.
Most business owners first meet the phrase "managed IT support" on a quote. It sounds like a service tier, but it is really a different way of buying IT: you pay a fixed monthly fee for the provider to keep everything working and secure, rather than paying for repairs after something fails. This guide explains what that covers, what it usually does not, how the contracts and pricing work, and how to tell whether it is the right model for your organisation.
The short definition
Managed IT support is an ongoing agreement in which an external company (a managed service provider, or MSP) takes responsibility for the day-to-day running of your IT. That means monitoring your computers, servers and network, applying updates, managing security tools, running a helpdesk for your staff, looking after Microsoft 365, checking backups and planning improvements.
The provider is paid a recurring fee, typically per user or per device per month. In return, the contract sets out what is covered, the hours support is available, and a service level agreement (SLA) describing how quickly issues are picked up and resolved.
The alternative is break-fix: no standing contract, you call when something breaks, and you pay by the hour. We compare the two in detail in break-fix versus managed IT support.
What a managed IT contract normally includes
Contracts vary, but a typical UK managed service for a business of up to 250 people covers most of the following.
- Helpdesk. Staff log issues by phone, email or portal and an engineer resolves them remotely, usually with a remote-control tool such as Splashtop.
- Remote monitoring and management (RMM). An agent on each computer and server reports health, disk space, failed services and pending updates, so faults are seen before staff notice them.
- Patching. Windows updates and third-party application updates are tested and applied on a schedule, which is one of the five controls in the NCSC's Cyber Essentials scheme.
- Endpoint security. Antivirus or, increasingly, endpoint detection and response (EDR) on every device, managed centrally.
- Microsoft 365 administration. Creating and removing users, licences, mailboxes, SharePoint and Teams permissions, multi-factor authentication.
- Backup monitoring. Checking that backups run and, periodically, that they restore.
- Joiners and leavers. Setting up new starters and disabling leavers' access. See our onboarding and offboarding service.
- Network management. Firewalls, switches and Wi-Fi access points kept on supported firmware and sensibly configured.
- Reviews. Periodic account reviews covering open issues, risks and a plan for the coming year.
What is usually excluded or charged separately
This is where quotes differ most, and where disputes arise later. Read the exclusions before you compare prices.
| Item | Typically included? | What to check |
|---|---|---|
| Remote helpdesk, business hours | Yes | Exact hours (for example 8am to 6pm, Monday to Friday) |
| On-site visits | Sometimes | Whether visits are included, capped per month, or billed per visit |
| Out-of-hours and weekend support | Rarely as standard | Whether it exists, at what rate, and how to reach it |
| Projects (migrations, office moves, new servers) | No | Quoted separately, usually as a fixed price |
| Hardware and software purchases | No | Procurement is a separate line, often with a margin |
| Microsoft 365 licences | No | Passed through at cost or with a small margin |
| Backup storage | Sometimes | Per-GB or per-device charges for cloud backup |
| Security add-ons (EDR, email filtering, awareness training) | Varies by tier | Whether "security" in the quote means antivirus only |
| Support for home or personal devices | Rarely | Bring-your-own-device policy and what is covered |
| Third-party application support | Partially | The provider will liaise with your accounts or CRM vendor, but not fix their software |
The honest version of "all-inclusive" is a contract that lists what is not included. If a proposal has no exclusions section, ask for one.
How managed IT support is delivered
Onboarding comes first. The provider audits your environment, documents the network, collects administrative credentials, installs monitoring agents and reviews backups and security. The changeover itself typically takes up to 2 days, with documentation following in the background, and is described in the first 30 days with a new IT provider.
After that, most of the work is invisible when it goes well. Patches are applied out of hours. A failing disk in a server raises an alert and gets replaced under warranty before it dies. A phishing email that got through the filter is reported by a member of staff and the sender is blocked. A new starter's laptop is built and delivered ahead of their first day.
The visible part is the helpdesk. A member of staff cannot print, a mailbox is full, a file has gone missing from SharePoint, Outlook keeps asking for a password. These are logged as tickets, prioritised and resolved, and the ticket history builds a record of recurring problems that should be fixed at the root.
Service delivery models fall into three groups:
- Fully managed. The provider is your IT department.
- Co-managed. You have an internal IT lead or small team and the provider handles monitoring, security, escalation and cover. See co-managed IT support.
- Project-based. Specific pieces of work such as a Microsoft 365 migration or a network refresh, often for businesses that keep support elsewhere.
Pricing models you will see in UK quotes
There are four common approaches.
- Per user per month. One price for each member of staff, covering their devices and accounts. Simple to budget and scales with headcount.
- Per device per month. Separate prices for computers, servers, firewalls, printers and phones. Fairer for businesses with shared workstations or lots of infrastructure, and the model we use for indicative pricing.
- Block hours. You pre-buy a bank of hours at a discount. Cheaper if you rarely call, but there is no monitoring and no incentive for the provider to prevent issues.
- Break-fix. Pay as you go, hourly. No contract, no monitoring, no patching unless you ask.
Our indicative per-device figures are £17.50 per month for a computer or laptop, £16.50 for a desk phone, £10 for a network printer, £25 for a router or firewall and £150 for a server (indicative February 2025 figures, subject to confirmation). The IT support cost calculator turns those into an estimate for your headcount, and the pricing page explains what sits behind them. For a fuller look at market ranges and what moves the price, read how much IT support costs in the UK.
The SLA: what the contract should commit to
An SLA translates "we're responsive" into numbers you can measure. It should include:
- Priority definitions. What counts as a P1 (whole business down), P2 (a team or key system affected), P3 (one person affected, with a workaround) and P4 (request or question).
- Response time per priority. How quickly an engineer starts work, not just when an automated email is sent.
- Resolution or update targets. Either a target to fix, or a commitment to update you at set intervals until fixed.
- Covered hours. Business hours, extended hours, or 24/7, and what happens outside them.
- Remedies. Service credits or termination rights if targets are repeatedly missed.
We explain the mechanics in what an IT support SLA is and what response times are reasonable. The main point: a response time quoted on a website is a marketing figure. Only the table in the signed contract counts.
Advantages that tend to be overlooked
The obvious benefits are fewer outages and someone to call. The less obvious ones often matter more to a finance director or operations lead.
Predictable spend. IT stops being a series of surprise invoices. Hardware refreshes are planned a year ahead, licences are reviewed rather than left to auto-renew, and emergency call-out rates disappear.
One accountable party. When the internet drops, is it the ISP, the firewall, the switch or the Wi-Fi? With a single provider managing all of it, that question is their problem. Read more in the benefits of a single IT provider.
Documentation. A managed provider has to document your systems to support them. That documentation belongs to you and is the difference between a smooth handover and a painful one when staff leave or you change providers.
Evidence for insurers and clients. Cyber insurers and larger customers increasingly ask whether you patch, use MFA, run EDR and test backups. A managed contract produces the records to answer yes.
Staff time. Every hour a manager spends on a printer driver is an hour not spent on the business. Our article on why business owners should not be managing IT problems puts numbers on that.
Who managed IT support suits, and who it does not
It suits organisations of up to 250 people that depend on email, shared files, line-of-business applications and a network to trade, and that do not want to employ an in-house IT team. Professional services firms, law firms, accountancy practices, healthcare providers, construction and plant hire companies, estate agents and leisure businesses are typical.
It suits businesses with an internal IT person who needs cover, escalation and specialist depth in security or networking.
It is a poor fit for a two-person business running entirely on laptops and cloud apps with no sensitive data, where a pay-as-you-go arrangement plus a backup and MFA might be enough for now. And it is a poor fit for any business that wants to buy the cheapest quote without reading the exclusions, because that is how "managed" becomes "break-fix with a monthly fee".
If you are unsure which side of the line you are on, does my business need IT support? works through the decision.
What to do next
If you want a number rather than a concept, the IT support cost calculator gives an indicative monthly figure for your headcount and equipment in a couple of minutes. It is based on our published per-device rates and is followed up with a scoping call so the estimate can be confirmed against what you actually run.