- Virtual CIO
How to Align IT Strategy with Business Goals
11 Mar, 2026
Free Tool
Internet Downtime Impact Calculator
Calculate the true cost of internet outages to your business — including lost productivity, revenue impact, and whether investing in redundancy pays for itself.
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UK average is approximately £150,000 per employee per year
Average duration of each internet outage
UK SMEs average 3–8 internet outages per year without redundancy
What percentage of your staff cannot work without internet (typically 80–100%)
Average Internet Downtime Costs by Business Size
| Business Size | Employees | Cost per Hour | Annual Cost (no redundancy) | Recommended Solution |
|---|---|---|---|---|
| Micro | 1–5 | £200–£500 | £4,000–£10,000 | 4G/5G backup |
| Small | 6–25 | £500–£3,000 | £10,000–£60,000 | Dual ISP or 4G failover |
| Medium | 26–50 | £2,000–£8,000 | £40,000–£160,000 | Dual ISP + leased line |
| Large SME | 51–100 | £5,000–£15,000 | £100,000–£300,000 | Leased line + FTTP backup |
| Enterprise | 100+ | £10,000+ | £200,000+ | Dual leased lines + SD-WAN |
Costs based on UK SME averages assuming £150,000 revenue per employee, 85% staff affected, and 5 incidents of 4 hours per year. Actual costs vary by industry and internet dependency. Talk to Cloudswitched about resilient connectivity.
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