How Much Does Business VoIP Cost in the UK in 2025?
A clear, direct answer to this question — written for UK business owners and IT decision-makers.
Direct Answer
Hosted VoIP systems typically cost £5–£15 per user per month with inclusive UK calls — a saving of up to 70% versus traditional ISDN line rental at £25–£50 per channel. Setup costs vary depending on number porting, handset requirements, and call routing complexity. AMVIA provides fixed monthly pricing with no hidden charges.
Key Points
What you need to know.
The Short Answer
31% of UK businesses have switched to VoIP as of 2025 — the fastest adoption rate of any business communication technology in recent history.
For UK Businesses
The PSTN will be switched off by 31 January 2027. Over two-thirds of UK landlines have already been upgraded to VoIP.
Cost Considerations
VoIP systems can reduce communication costs by up to 75%. Small businesses typically see 25–50% lower costs than traditional telephony.
Next Steps
About 1 in 5 business leaders say they have lost business due to poor communication.
Quick Comparison
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Frequently Asked Questions
A hosted VoIP licence at £5–£15/user/month typically includes unlimited UK landline and mobile calls, voicemail to email, a softphone or mobile app, call forwarding, and basic call reporting. Premium tiers add call recording, CRM integration, and wallboard analytics. Hardware such as desk phones is either rented or purchased separately. Teams Phone has surpassed 26 million PSTN users worldwide (UC Today), showing the scale of cloud telephony adoption.
The main additional costs are number porting fees (often waived by providers), IP desk phones if required (£50–£150 each), and potentially upgrading your internet connection to handle voice traffic reliably. Some providers also charge for call recording storage or premium support. AMVIA provides fully transparent pricing with no hidden charges, so your quoted monthly cost is the cost you pay.
ISDN line rental costs £25–£50 per channel before call charges, and each channel supports only one simultaneous call. VoIP at £5–£15/user/month includes calls and supports multiple simultaneous calls per user. With the UK PSTN switch-off scheduled for completion by January 2027 (Openreach), ISDN pricing will become irrelevant as the network is decommissioned entirely.
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