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Business phone costs range from $10 to $65+/user/mo. Learn what drives pricing, common add-on charges to watch, and how Zoom Phone can help you get more value.
7 min read
Published on September 10, 2026
If you've ever Googled "business phone system cost" and come away more confused than when you started, you're not alone. The answer depends on what kind of system you choose, how many people need it, and — crucially — what's actually included in the price. Cloud-based voice over internet protocol (VoIP) systems have changed the math dramatically, putting enterprise-grade calling within reach of even the smallest teams, but hidden fees and add-ons can quickly erase those savings if you don't know what to look for.
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Not all business phone systems are built the same — and your choice will have the biggest impact on what you pay, both upfront and every month.
A private branch exchange (PBX) is the classic office phone setup: hardware installed on-site, physical handsets, and calls routed over the public telephone network (PSTN). It's reliable, but the cost of entry is steep.
For businesses with a few dozen employees, an on-premises PBX can easily run into six figures over its lifetime — and it doesn't travel with your team.
A hosted VoIP system routes calls over the internet instead of copper wire. There's no on-site hardware to buy or maintain, and pricing is per user per month. Generally, prices for business VoIP range from roughly $10/user/month for basic service to $40+/user/month for advanced solutions — with most small businesses landing around $20/user/month.
The savings compared to traditional systems are significant. Independent cost analysis shows cloud VoIP typically costs 37–41% less than traditional PBX over a five-year period.
UCaaS goes further than a standalone VoIP line. It bundles calling with video meetings, chat, SMS, and often AI-powered features — all in one platform. For teams that currently pay separately for a phone system, a video conferencing tool, and a messaging app, consolidating into a single UCaaS platform can cut the total cost of ownership significantly.
| System type | Upfront cost | Monthly cost per user | Best for |
|---|---|---|---|
| Traditional PBX | $5,000–$20,000+ | $35–$70/line | Static office environments |
| Hosted VoIP | $0–$500 (hardware optional) | $10–$40 | Remote/hybrid teams |
| UCaaS | $0 | $16–$50+ | Teams wanting calling + meetings + chat in one place |
Even within the same category, prices vary widely. Here's what often drives the number up or down:
Sticker price and actual price aren't always the same. Common add-on charges that can inflate your bill:
When comparing providers, build a complete per-user cost that includes all the features your team actually needs — not just the base plan rate.
Here's a quick-reference breakdown of what you can expect to pay by tier:
| Tier | Typical cost/user/month | What's usually included |
|---|---|---|
| Entry-level (metered) | $10–$20 | Pay-as-you-go calling, basic call handling, voicemail |
| Mid-tier (unlimited domestic) | $20–$30 | Unlimited US/Canada calling, SMS, call recording, integrations |
| Advanced / UCaaS | $30–$40+ | Calling + video + chat + AI features, analytics, global calling |
Keep in mind: two providers at the same price point can include very different feature sets. AI-powered call summaries, voicemail transcription, and built-in integrations with CRM and other business tools are increasingly standard on mid-tier and above — but not universal.
How much does Zoom Phone cost?
Many cost guides focus on per-user pricing and feature tiers. What they often overlook is the cost of meeting compliance requirements and maintaining security — and that can be a significant gap for businesses evaluating their options.
For many businesses that handle sensitive customer calls, operate in a regulated industry, or simply need to meet E911 requirements, security and compliance aren't optional. With some providers, meeting those requirements may mean layering on third-party tools or paying for compliance add-ons.
Zoom Phone includes features to support security and compliance requirements, including E911 support to help businesses stay prepared for emergency situations. Role-based access controls enable admins to manage who can see call logs, recordings, and settings without needing deep technical expertise. For a full overview of Zoom's certifications and attestations visit our Compliance at Zoom page.
The monthly per-user rate is just the starting point. A true total cost of ownership (TCO) calculation should factor in:
That last point is where cloud phone systems often deliver the clearest return. Managing multiple carriers and legacy systems can drive up costs and complexity.
For a 10-person team currently paying separately for a phone system ($20/user), a video tool ($15/user), and a chat app ($10/user), consolidating onto a single UCaaS platform at $20.50/user could cut that stack cost significantly while adding capabilities — like AI call summaries and voicemail prioritization — that weren't there before.
The average small business target is around $20/user/month, with most small businesses paying between $10 and $40 per user per month for a cloud VoIP system, depending on the plan tier and features included.
Yes, in most cases — significantly so. Traditional on-premises PBX systems often require $5,000–$20,000 or more in upfront hardware and installation, plus ongoing maintenance contracts. Cloud VoIP has no upfront hardware cost.
There can be. Common extras include SMS/MMS charges, E911 fees, number porting fees, call recording storage, and compliance add-ons. When evaluating providers, always ask for a fully loaded per-user cost that includes the features your team actually needs.
It varies by provider and tier. A standard cloud VoIP plan typically includes inbound and outbound calling, a business phone number, voicemail, and basic call management (hold, transfer, call routing). Mid-tier and above often add unlimited domestic calling, SMS, call recording, and integrations. UCaaS bundles like Zoom Phone add video meetings, chat, and AI-powered features like call summaries and voicemail prioritization.
Yes. Most cloud VoIP providers support number porting — transferring your existing business number to the new system. You can bring over company phone numbers from your old system without service interruptions. Check with your new provider for porting timelines, which typically run five to 10 business days.
The cheapest cloud VoIP entry point is typically a metered (pay-as-you-go) plan, which runs around $10–$12/user/month. Zoom Phone offers a metered plan that includes calling, SMS, voicemail, AI features, and integrations — making it a capable entry-level option. Note that metered plans charge per minute for outbound calls, so they work best for light callers with low messaging volume.
