How Much Does a Business VoIP System Cost in the UK?

Understanding Business VoIP Costs in the UK

One of the first questions businesses ask when considering a switch to VoIP is: how much will it cost? The good news is that a VoIP phone system is significantly cheaper than traditional telephony — both upfront and on an ongoing basis. This guide breaks down every cost so you can budget with confidence.

Monthly Per-User Costs

The core cost of a hosted phone system is the monthly per-user licence. This covers the hosted platform, call routing, voicemail, and typically a bundle of inclusive calls. Expect to pay:

Basic packages — £8–12 per user per month (ideal for businesses that mainly receive calls)
Standard packages — £12–16 per user per month (includes unlimited UK calls and core features)
Premium packages — £16–20 per user per month (adds call recording, CRM integration, analytics and advanced features)

Most business phone service packages include unlimited calls to UK landlines and mobiles, so there are no surprise call charges at the end of the month.

IP Handset Costs

If your team prefers physical desk phones, you will need IP handsets. Here are typical prices for popular Yealink models:

Entry Level: Yealink T33G (£50–80)

A reliable, no-frills IP phone with a colour screen, HD voice and four line keys. Perfect for general office use, reception desks and hot-desking environments.

Mid Range: Yealink T46U (£120–180)

A feature-rich phone with a large colour display, 16 line keys, Bluetooth and USB support. Ideal for managers, team leaders and staff who handle high call volumes.

Premium: Yealink T58W (£200–300)

A smart media phone with a 7-inch adjustable touch screen, built-in Bluetooth and Wi-Fi, and optional camera for video calls. Suited to executives and customer-facing roles.

Softphone Apps: Free

Most VoIP providers include softphone applications at no extra cost. These apps turn your computer, tablet or mobile into a fully functional business phone. For remote workers and mobile staff, softphones eliminate the need for any hardware investment.

Number Porting Costs

Transferring your existing phone numbers to your new VoIP system is usually free of charge. Your provider handles the porting process with your current carrier. There may be a small charge for porting large batches of numbers or complex number ranges, but for most businesses there is no cost.

Call Costs

With most hosted VoIP packages, UK calls are included in the monthly fee. This typically covers:

Unlimited calls to UK landlines (01, 02, 03 numbers)
Unlimited calls to UK mobiles
Competitive rates for international calls (often 1–5p per minute to major destinations)

Compare this with traditional ISDN, where you pay for every call on top of your line rental.

Comparison with ISDN Costs

To understand the savings, here is how VoIP compares with ISDN for a typical 10-user business:

ISDN Costs (10 Users)

ISDN30 rental: £300–350 per month
Call charges: £100–200 per month
PBX maintenance contract: £50–100 per month
Total: £450–650 per month

VoIP Costs (10 Users)

Per-user licences (10 × £14): £140 per month
Call charges: included
Maintenance: included (cloud-hosted)
Total: £140 per month

That is a saving of £310–510 per month, or £3,720–6,120 per year. Over a typical three-year period, the savings are substantial.

Hidden Savings You Might Not Expect

Beyond the obvious cost reductions, VoIP delivers several hidden savings:

No maintenance contracts — the hosted platform is maintained by your provider at no extra cost
No engineer visits — changes, additions and configurations are done remotely or through a self-service portal
No hardware depreciation — there is no on-premise PBX to replace every 7–10 years
Reduced mobile costs — staff using softphone apps on Wi-Fi do not use mobile minutes
Lower international call costs — VoIP international rates are a fraction of traditional charges

Typical Savings: 30–60%

Across our customer base, businesses switching from ISDN or traditional landlines to hosted VoIP typically save 30–60% on their total telephony costs. The exact saving depends on your current setup, call volumes and the package you choose.

Want to know exactly how much you could save? Request a free, no-obligation quote from Connection Technologies. We will review your current phone bills and show you a detailed cost comparison.