How much does a business phone system cost?
Business phone system pricing splits into two very different models, and most of the confusion comes from comparing them without knowing which is which. Cloud VoIP runs about $20 to $45 per user per month with no hardware required. A traditional on-premise system costs more upfront in hardware and installation, with lower ongoing fees after that. Nearly every new small-business deployment today is cloud.
If you want a concrete number: a 10-person team on a mid-tier cloud plan spends roughly $3,000 to $3,600 per year, no hardware costs included unless the team wants physical desk phones.
The two cost models
Cloud VoIP (also called hosted PBX) runs on the provider's servers. Your team places and receives calls through an app on a laptop, smartphone, or desk phone. The provider manages the infrastructure, handles software updates, and scales with you as you grow. You pay a flat fee per user per month and can add or remove seats without touching any hardware.
A traditional on-premise PBX puts the switching equipment in your office. You pay a large amount upfront for hardware and installation, connect it to SIP trunks or analog lines, and manage ongoing maintenance yourself. Monthly fees are lower once it is running, but the capital outlay is real, and so is the IT cost over time.
Nearly every new small-business phone system deployed today is cloud VoIP. On-premise is mainly an enterprise choice now, kept for compliance requirements or organizations with dedicated IT staff. If you are starting fresh or switching from an old system, cloud is the practical default.
Cloud VoIP: the per-user monthly cost
Pricing is tiered by features. Entry plans with basic calling, voicemail, and a mobile app run about $15 to $25 per user per month. Mid-tier plans add an auto-attendant (the menu that greets callers and routes them to the right person), call recording, voicemail transcription, and basic analytics - those typically land around $25 to $35. Top-tier plans add CRM integrations, AI transcription, video conferencing, and unlimited international calling, generally $35 to $45 per user per month.
Annual billing usually knocks 15 to 20 percent off the monthly rate. Worth taking if you have tested the provider and confirmed it is a good fit for your team.
Ten people on a $30-per-user mid-tier plan pays $300 a month, or $3,000 to $3,600 annually depending on billing cycle. That gets every user a direct-dial number, voicemail, an auto-attendant for the main line, and a mobile app for working from anywhere.
One thing to check before signing: shared numbers (a main business line or a department number) may count as an additional seat, or they may be bundled in. It varies by provider, and the answer can affect the total meaningfully if you need several shared lines.
Hardware: desk phones or just apps
No hardware required. Softphone apps come with virtually every cloud VoIP plan and run on Windows, Mac, iPhone, and Android. For remote or hybrid teams, a laptop app and a decent headset handles most calls well.
Physical desk phones are an option, not a requirement:
- Basic IP phones run about $80 to $130 each - adequate for a receptionist or anyone in an office role who stays at a desk
- Mid-range phones with better audio quality and more programmable buttons run about $130 to $200
- Executive or conference-room phones with larger screens and higher-grade audio run $200 to $300 or more
- Headsets are optional add-ons, about $30 to $150 each depending on whether they are wired or wireless and the audio quality
- Analog phones you already own can connect via an ATA adapter for about $30 to $80 each, instead of replacing them outright
Desk phones are a one-time purchase. No monthly hardware fee once you own them. A five-person office buying mid-range phones spends roughly $650 to $1,000 up front - separate from the monthly plan costs, not included.
Setup, porting, and the fees to watch
The per-user plan price is not the complete number. Several additional costs appear on real invoices, and a few are large enough to change the total meaningfully.
Number porting - moving your existing business phone number to the new provider - is free at most cloud VoIP providers. Some charge $10 to $30 per number. Confirm this before you sign up if keeping your current number matters to your business.
The recurring costs that catch businesses off guard are the regulatory ones. Telecommunications taxes, the Universal Service Fund surcharge, and state-specific fees are legally required on all phone service. Depending on your state, they add 10 to 25 percent to the base plan price. Every provider charges them. They are not negotiable.
E911 fees, usually $1 to $2 per user per month, apply in most states and are required for emergency call routing.
Add-ons are the other area to audit carefully. AI transcription, extra call recording storage, toll-free numbers, and CRM integrations are often sold separately on lower-tier plans, even when they look like standard features at higher tiers. A few dollars per user per month adds up quickly across a larger team.
International and toll-free usage is metered on most plans, not unlimited. Toll-free minutes are billed per minute. If customers call you on a toll-free line from outside the US, that usage is not covered by the flat monthly fee.
On-premise PBX: the big-upfront option
Hardware alone for an on-premise PBX - server, PBX appliance, and IP phones for every desk - runs from a few thousand dollars for a small office to tens of thousands for a larger one. Add installation and configuration by a certified technician, then ongoing maintenance, IT support, and the SIP trunks or analog lines the system needs to connect to the public phone network. Those are recurring costs you manage yourself.
On-premise makes sense for large organizations with dedicated IT staff and specific compliance requirements around where call data lives and who controls it. For a small business without an IT department, it is almost always more expensive over the life of the system than cloud VoIP. Our hosted PBX guide and SIP trunk article go deeper on those cost structures if you are evaluating the option seriously.
A realistic total, and how to keep it down
| Cost item | Typical range |
|---|---|
| Cloud VoIP per user | $20 to $45 per month |
| Desk phone (one-time) | $80 to $300 each |
| Number porting | Free to $30 per number |
| On-premise system upfront | $3,000 to $20,000 or more |
Start at mid-tier. Most teams do not need the highest-tier plan from day one. Upgrade when you actually hit a specific feature gap. Some providers make it harder to step back down once you have been on a higher tier, so factor that in before committing.
Skip desk phones if the team is remote or hybrid. A USB headset and a laptop app handles most business calls. You avoid the one-time hardware cost entirely and your team can work from anywhere without additional equipment.
Pay annually. The 15 to 20 percent discount is standard across most providers, and the service is identical either way. Confirm the provider works well for your team before locking in for the full year.
Audit add-ons after 90 days. AI transcription, extra storage, and premium integrations get enabled during signup and then sit unused. Check what your team has actually used and remove what it has not.
Drop unused numbers. Extra phone lines cost a few dollars a month each. Remove any assigned to people who have left the company or roles that no longer need their own dedicated line.
Frequently Asked Questions
Senior Staff Writer
Alex has covered telecom, smartphones, and business communications for eight years. Before DeltaThree, he tested gear for a carrier trade publication and ran the wireless desk at a consumer tech site. He pays his own phone bill.
