The Hidden Cost of Cheap Broadband for Your Business
The Hidden Cost of Cheap Broadband for Your Business
I regularly visit small businesses in Kent running their entire operation on a residential broadband line because it is £20 a month cheaper than the business alternative. The broadband is technically identical in terms of cable and speed. The difference shows up when something goes wrong, or when twelve people try to use Teams simultaneously on a Friday afternoon.
Here is what you are actually buying when you pay for business broadband, and how to decide whether the saving is worth the risk.
What residential broadband does not give you
Priority repair
When a residential line goes down, the repair SLA is typically 72 hours. That is three days without internet if Openreach is busy. A business broadband line with a proper SLA typically guarantees next-day repair, sometimes same-day. If your team cannot work without the internet, three days of downtime is not a theoretical cost; it is a real one.
Static IP address
Most residential broadband comes with a dynamic IP address that changes periodically. Business broadband typically includes a static IP. This matters if you host any services that need to be reached from outside (a VPN, a hosted phone system, a remote desktop gateway), or if your business banking or email filtering uses IP-based security rules.
Contention ratio
Residential broadband lines are heavily contended: the bandwidth of the physical cable is shared among many homes. Business lines have lower contention, meaning your speed is more consistent during peak times. The difference is noticeable on video calls and cloud applications during the working day.
Support
Consumer broadband support is designed for householders. Business broadband support from a reputable provider includes UK-based business support, faster escalation paths, and a contact who can actually investigate a complex fault rather than reading from a script.
What about speed?
Speed matters less than consistency and reliability for most business use. A 150Mbps residential line with variable performance is less useful than an 80Mbps business line that delivers its headline speed reliably. For video calls, the key metric is upload speed and latency, not raw download speed.
For a team of ten doing Microsoft 365, Teams calls, and cloud-based line-of-business software, 100Mbps symmetric (or even 50Mbps) with a business SLA is more than sufficient. The problem is usually reliability, not raw speed.
The failover question
Whatever you spend on your primary broadband line, I strongly recommend having a failover. That can be a second broadband line on a different network (so a cabinet fault does not take both), or a 4G/5G router that kicks in automatically when the main line drops.
A failover line is not expensive. A 4G SIM with enough data for a working day costs around £20-£30 per month. Compare that to the cost of even two hours of downtime for a ten-person team, and the maths is straightforward.
What to look for in a business broadband provider
- A written SLA with defined repair times (not "we will try our best")
- UK business support, reachable during business hours without a long queue
- Static IP included or available
- A contract that gives you recourse if the service fails to meet the SLA
- The option to add a failover or secondary line
The bottom line
Broadband is infrastructure. Running your business on cheap residential connectivity is like having a single-phase power supply in a workshop: it works until it does not, and when it fails, everything stops. The difference in cost between residential and business broadband is usually less than £30 per month. The difference in reliability and support can be the difference between a minor inconvenience and a lost day of work.
If you are not sure what you are currently running on, or you want advice on connectivity options for your office in Kent or Medway, get in touch.
ClearPath IT Services advises small businesses across Kent, Medway and South East London on connectivity, IT infrastructure, and managed support.