Business VoIP Costs in the UK
Hosted business VoIP starts from £5.95 per user/month, with the wider UK market typically £12–£20 per user for managed platforms. This guide breaks down what actually drives the bill — users, handsets, calling plans — and what the PSTN switch-off means for your budget.
Quick answer: what does business VoIP cost?
Hosted business VoIP starts from £5.95 per user/month with AMVIA, while the wider UK market typically runs £12–£20 per user for managed platforms (RingCentral from £15, 8x8 from £12, Vonage from £14, BT from £16). Against legacy ISDN at £25–£50 per channel/month — or an on-premises PBX at £5,000–£15,000 in hardware for a 20-user office — the switch usually pays for itself quickly. Number porting takes 5–15 working days.
Compare UK VoIP providersGet business VoIP pricing for your team
Tell us your business postcode and roughly how many users — we size the right platform and send tailored per-user pricing, typically within 24 hours. Hosted VoIP from £5.95 per user/month.
What Business Phone Options Cost (2026)
Per-user monthly pricing for hosted VoIP against the legacy alternatives it replaces. Entry pricing shown where centrally verified.
| Option | Typical cost | Notes |
|---|---|---|
| AMVIA hosted VoIPFrom £5.95/user | from £5.95 per user/month | Hosted platform, mobile apps, Teams integration available |
| Managed VoIP platforms (UK market) | £12–£20 per user/month | RingCentral from £15, 8x8 from £12, Vonage from £14, BT from £16 |
| Legacy ISDN line rental | £25–£50 per channel/month | Being retired — PSTN/ISDN switch-off completes 31 January 2027 |
| On-premises PBX (20 users) | £5,000–£15,000 hardware | Plus maintenance — the capex model VoIP replaces |
What Moves Your VoIP Bill
Six factors that decide the real per-user price — most are choices, not surprises.
User count
Per-user pricing means the bill scales with headcount — and volume improves the rate. Count everyone who needs an extension, including hybrid and mobile-only staff.
Calling plans
Inclusive UK calling vs pay-as-you-go, and international bundles if you call abroad regularly. The right plan for your call profile is worth more than a cheap headline rate.
Handsets vs softphones
Physical desk phones add per-device cost; softphone apps on laptops and mobiles are typically included. Most modern deployments mix both.
Teams integration
If your team lives in Microsoft Teams, direct routing or Teams calling plans change the licensing shape — sometimes cheaper, sometimes not. Worth modelling both ways.
Number porting
Keeping your numbers costs little but takes 5–15 working days — sequence it properly during migration so there's no gap in service.
The connection underneath
VoIP is only as good as the bandwidth it runs on. Uncontended connectivity — or at least business-grade broadband — protects call quality; budget them together.
The honest way to price business VoIP
Start with what you're leaving, not what you're buying. Legacy ISDN runs £25–£50 per channel per month, and an on-premises PBX for a 20-user office represents £5,000–£15,000 in hardware before maintenance. Hosted VoIP replaces both with per-user pricing — from £5.95 per user/month with AMVIA, or £12–£20 across mainstream UK managed platforms — with no switch hardware to own and numbers that cost less than landline equivalents to run.
The 2027 deadline changes the question
The PSTN and ISDN switch-off completes on 31 January 2027, so for businesses still on analogue or ISDN the question isn't whether to move — it's when, and to what. Migrating early avoids the engineer bottleneck as the deadline approaches, and the sequence matters: choose the platform, port the numbers (5–15 working days), then cease the legacy lines — never the other way round. Our PSTN switch-off guide covers the timeline in full.
Comparing providers on more than the headline rate
Entry pricing across the UK market clusters tightly (8x8 from £12, Vonage from £14, RingCentral from £15, BT from £16, AMVIA from £5.95), so the real comparison is what the rate includes: calling plans, mobile apps, Teams integration, support quality and contract terms. Our UK provider comparison puts the big names side by side — and the case for AMVIA is the same one that runs through everything we do: the phones, the connectivity they run on, and the support sit with one accountable provider. See hosted phone systems for what the platform includes.
Don't price the phones without the connection
Call quality is a bandwidth question before it's a platform question. VoIP on contended broadband at peak times is where dropped-call complaints come from — which is why we quote telephony and connectivity together. For most offices that means business-grade broadband; where phones are business-critical, a leased line with guaranteed bandwidth is the safer platform. Start with your postcode and we'll price the whole stack.
Business VoIP Cost FAQs
AMVIA hosted business VoIP starts from £5.95 per user/month, while mainstream UK managed platforms typically run £12–£20 per user (8x8 from £12, Vonage from £14, RingCentral from £15, BT from £16). Your exact rate depends on user count, calling plans and whether you need physical handsets.
Almost always. Legacy ISDN line rental runs £25–£50 per channel per month before call charges, against hosted VoIP from £5.95 per user/month — and the PSTN/ISDN switch-off on 31 January 2027 is retiring the legacy option anyway. The comparison now is between VoIP providers, not VoIP versus staying put.
Hosted VoIP has no PBX hardware to buy — the £5,000–£15,000 capex of an on-premises system for a 20-user office simply disappears. Budget instead for handsets if you want desk phones (softphone apps are typically included), and allow 5–15 working days for number porting during migration.
Not necessarily — business-grade broadband carries VoIP well for most smaller teams. But call quality is a bandwidth question: on contended broadband at peak times, calls degrade first. Where phones are business-critical, uncontended connectivity with guaranteed bandwidth is the safer platform, which is why we price telephony and connectivity together.
Yes — numbers port to the new platform, typically in 5–15 working days. The critical rule during any migration: port the numbers before ceasing the old lines, never after, so there's no gap and no lost numbers.
Get VoIP Pricing for Your Team
Tell us your user count and we'll size the platform, the calling plans and the connectivity underneath — one quote, one provider. No obligation.
Related Resources
Business VoIP
Hosted telephony from £5.95/user/month — the full AMVIA VoIP hub.
Best Business VoIP Providers UK
AMVIA, RingCentral, 8x8, Vonage and BT compared side by side for 2026.
Is VoIP Cheaper Than a Landline?
The like-for-like running cost comparison.
The PSTN Switch-Off
What the 31 January 2027 deadline means for your phones and lines.
Business Broadband
The connectivity your calls run on — from £29/month.