VoIP Office Phone System Pricing (2026): Guide to UK VoIP Costs

Core monthly costs for office VoIP systems

One-off or optional costs for office VoIP systems

How Much Does VoIP Software Cost in the UK?

VoIP software typically costs UK businesses around £7 for entry-level plans up to around £40 per user, per month for the most advanced plans. Here’s how we split those costs based on the different tiers providers offer.

What changes the price of VoIP software?

• Minutes policy: Plans vary on UK landline and mobile inclusions, and fair use rules still apply.
• AI and analytics depth: Call summaries, searchable transcripts, coaching insights and QA tools usually sit in higher tiers or add-ons.
• Integrations: CRM and helpdesk integrations can be included, limited by tier or sold as paid add-ons.
• Support level: Onboarding, admin help and faster response times are commonly tied to higher tiers.
• Contract terms: Annual billing is often cheaper than monthly rolling and longer terms can reduce per-user cost.
• User volume: Per-user pricing often drops at higher seat counts, especially on annual contracts.

Quick way to pick the right tier

• Choose basic if you mainly need a professional number, simple routing, and you rarely call mobiles or internationally.
• Choose mid-tier if you handle regular inbound calls, need queues or ring groups, and want predictable monthly costs.
• Choose premium if calls drive revenue or service delivery and you need deeper reporting, integrations and AI call intelligence.

We suggest that you export a recent call log, check your mobile versus landline split and confirm what the provider counts as inclusive minutes before you commit to any specific plan. That way, you can compare costs for your specific use cases.

Example software pricing from top UK VoIP providers

To clarify what VoIP pricing ranges you may come across in reality, here are some examples:

How Much Do Call Minutes Cost With a VoIP Office Phone System?

Most UK business VoIP plans include inclusive UK minutes, especially at the mid-tier and premium tier levels, but international calling, premium-rate numbers and some destination types are commonly metered.

When a VoIP plan doesn’t include minutes, calls cost around £0.01 to £0.15 per minute for UK domestic calls, and £0.03 to £2 per minute for international calls.

What does ‘unlimited’ minutes mean in practice?

• Fair use policies still apply. Inclusive minutes can be capped or managed for unusually high outbound usage.
• Bundles are rarely truly universal. International calls and special number types are commonly charged separately.
• Mobile-heavy teams pay more when mobiles are excluded. If most customer calls go to mobiles, choose a tier that explicitly includes them.

How Much Does VoIP Phone Hardware Cost in the UK?

VoIP hardware is optional in 2026. Many UK businesses eliminate handset costs by using softphones on laptops and smartphones, which essentially means using a downloaded or web-based app, and using those devices’ microphone capabilities, or investing in a headset for clearer audio and better privacy.

What hardware to buy first in 2026?

If you don’t already own any office phone hardware, this is the order we’d suggest investing in:

1. Headsets: Upgrades call quality immediately over laptop or smartphone devices, improving professionalism on customer calls.
2. Desk phones: Add only for fixed roles (reception, compliance lines, shared hot desks) or where a handset is operationally better.
3. ATAs: Use for limited legacy needs, not as a full-office strategy (avoid if you are a new business).

How Much Does It Cost To Install a VoIP Office Phone System?

Most UK VoIP systems cost £0 to install because setup is cloud-based and can be completed online with remote provisioning. Paid setup support is typically £200 to £350 for a half-day when you need help configuring call flows, provisioning hardware or coordinating a larger rollout.

What does VoIP setup support usually involve?

• User setup: Creating accounts, extensions, groups, permissions and admin roles.
• Call handling: Auto attendant menus, ring groups/queues, routing rules and business hours.
• Devices: Remote provisioning for IP phones and recommended headset/app settings.
• Number migration: Coordinating number porting and confirming cutover steps.
• Live checks: Test calls, voicemail, call transfers and failover routing.

How Much Does a VoIP Phone System Cost for Different Business Sizes?

A VoIP phone system’s total cost (made up of monthly and one-off upfront costs discussed above) will vary depending on the team size and system complexity your business requires. Here’s a practical guide to what those totals could look like.

Total monthly cost by team size and VoIP system setup

How these monthly totals are calculated:

• Lean setup = basic software (£7 to £14 per user, per month) + broadband (£20 to £50 per month)
• Average setup = mid-tier software (£15 to £24 per user, per month) + broadband (£20 to £50 per month) + add-ons (£5 to £15 per user, per month)
• High-performance setup = premium software (£25 to £40 per user, per month) + broadband (£20 to £50 per month) + add-ons (£15 to £35 per user, per month)

You may also need to compute monthly calling minutes, depending on your package. However, since most plans include unlimited domestic minutes, according to our research, we’ve not included them in our overall cost calculations.

One-off setup cost by team size and VoIP system setup

How these one-off totals are calculated:

• App-first setup = one headset per user (£10 to £150 each) + number porting (one to three numbers for up to 10 users; two to five for 10 to 25; three to 10 for 25 to 50; priced at £0 to £30 per number)
• Mixed hardware setup = app-first setup + IP desk phones for up to 25% of users (£10 to £120 per phone)
• Optional setup support = £0 to £350 when you pay for provider-led onboarding or a more complex rollout

Can AI Features Reduce the Total Cost of a VoIP Phone System?

AI features embedded in VoIP systems reduce business costs by improving efficiency rather than explicitly saving you money in monthly or upfront costs.

AI tools for note-taking, follow-ups, CRM updates, coaching and quality assurance can all help here, saving your team time spent on admin, onboarding, and even aiding with lost sales or missed actions after customer conversations.

How Can UK Businesses Save Money When Choosing a VoIP Phone System?

The cheapest VoIP plan is rarely the cheapest VoIP system in the long run. The lowest total cost comes from matching the plan to your call pattern, keeping hardware lean, and avoiding paid add-ons you will not use.

The steps below reduce monthly spend without creating the two expensive outcomes VoIP buyers want to avoid: missed calls and unpredictable bills.

1) Choose the lowest tier that still matches your call destinations

Plans that look cheap often exclude the destinations SMEs dial most. Before you pick a tier, export a recent call log and calculate your UK mobile versus landline split, plus any international calling. Then choose a plan that explicitly includes what you dial.

2) Keep the rollout app-first, then add desk phones if they improve workflow

As discussed, the lowest-cost hardware setup is softphones on laptops and mobiles, plus headsets for frequent callers. This removes handset purchases and keeps you flexible if your team works remotely.

We suggest only adding desk phones for fixed roles (reception desks, shared hot desks, high-volume call roles) where a physical handset is genuinely operationally better.

3) Avoid per-user add-ons by getting the right bundle upfront

Add-ons are where costs silently climb, especially as headcount grows. Price up your must-haves first (integrations, analytics, call recording retention, AI call summaries), then compare whether they are included in a higher tier. A slightly higher per-user plan can be cheaper than stacking multiple paid add-ons.

4) Pay only for users who need a dedicated number

VoIP is priced per user, so only give full licences to staff who make or handle calls directly, then use lighter roles (such as via different extension lines) where your provider supports them. This is one of the simplest ways to keep monthly spend controlled as you scale.

5) Use annual billing only when the exit terms are safe

Annual billing often reduces the per-user price, but it only saves money when the contract is aligned with your reality. Confirm the minimum term, renewal behaviour and early termination rules. A cheap annual deal becomes expensive if you need to downsize or switch providers mid-term.

6) Get number strategy right at the start

Extra numbers are cheap individually, but add up when you keep adding lines for departments, marketing campaigns and locations.

Decide up front how many numbers you need and what each one is for. This also helps you avoid paying twice during migration by keeping old and new numbers running in parallel for too long.