Understanding business phone system cost in the UK is harder than it should be — pricing pages rarely show the full picture, and traditional providers often bundle in extra charges that only appear once you’re locked into a contract. Here’s a clear breakdown of what actually drives the cost, so you can compare providers properly.
What Affects Business Phone System Cost in the UK?
Several factors determine what a business will pay for its phone system, regardless of whether it’s a traditional line-based setup or a cloud VoIP platform:
- Number of users – most providers price per user, per month
- Call bundles – inclusive minutes for UK landlines, mobiles, and international calls
- Hardware – desk phones, headsets, or conferencing equipment
- Features included – video meetings, contact centre tools, CRM integration
- Contract length – shorter contracts often carry a premium
- Support level – self-service vs. fully managed support
Traditional Phone System Costs
A traditional PSTN or ISDN-based phone system typically involves several separate cost lines:
- Line rental per number
- Call charges (often higher for mobile and international numbers)
- On-site PBX hardware purchase or lease
- Maintenance contracts for that hardware
- Engineer call-out fees for changes or faults
These costs are easy to underestimate because they’re spread across multiple invoices, and hardware maintenance in particular tends to increase as equipment ages.
Cloud VoIP / UCaaS Pricing Models
Most cloud phone system providers, including Curo IP, price per user per month, with everything bundled into a single predictable invoice. Typical pricing tiers include:
- Basic – calling only, ideal for very small teams
- Standard – calling, video meetings, and messaging in one app
- Premium / Contact Centre – adds call queuing, wallboards, and CRM integration for larger or customer-facing teams
Because there’s no separate hardware maintenance contract or line rental, cloud VoIP pricing is usually far easier to forecast month to month. See our current pricing plans for exact figures.
Hidden Costs to Watch Out For
Whichever system you choose, watch for these common hidden costs before signing a contract:
- Setup and porting fees – some providers charge extra to migrate existing numbers
- Minimum contract terms – long lock-in periods can cost more if your needs change
- Add-on features – call recording, analytics, or CRM integration sometimes cost extra
- Early termination fees – particularly relevant if you’re migrating away from an existing provider
- Hardware costs – desk phones or headsets may be charged separately from the software
VoIP vs Traditional: Which Costs Less Long-Term?
In almost every case, cloud VoIP costs less over a 3–5 year period than a traditional phone system, mainly because it removes ongoing hardware maintenance and typically bundles more calls and features into the base price. For a full feature-by-feature comparison, see our guide on VoIP vs traditional phone systems.
How to Get an Accurate Quote
Because pricing varies so much by provider, the most reliable way to understand your actual cost is to request a quote based on:
- Number of users and locations
- Expected call volume (UK, mobile, international)
- Features required (video, contact centre, CRM integration)
- Whether number porting is needed
- Desired contract length
A provider that can’t give you a clear, itemised quote covering these points is worth being cautious of.
How Curo IP Prices Its Cloud Phone System
Curo IP offers transparent, per-user pricing with no hidden hardware maintenance fees, and most businesses see a meaningful reduction in their total telecoms spend after switching from a traditional system. Get a free, no-obligation quote to see exactly what your business phone system would cost with Curo.
How much does a business phone system cost per user in the UK?
Costs vary by provider and features included, but cloud VoIP systems typically price per user per month, often working out cheaper overall than traditional line-based systems once hardware and maintenance are factored in.
Is VoIP cheaper than a traditional phone system?
Generally yes, because VoIP consolidates line rental, call charges, and hardware maintenance into one predictable subscription.
Are there hidden costs with cloud phone systems?
Some providers charge extra for setup, number porting, or add-on features like call recording, so it’s worth checking exactly what’s included before signing up.
Does switching phone systems cost anything upfront?
Some migration and porting costs may apply depending on the provider, though many, including Curo IP, keep this process simple and clearly costed from the outset.
How can I compare business phone system costs fairly?
Request an itemised quote covering users, call bundles, features, and contract length from each provider, rather than comparing headline prices alone.