Cloud business phone entry-level plans may start around $15 to $25 per user per month with annual billing; advanced plans and add-ons typically cost more. On-premises business communications systems require an upfront investment in equipment, licensing, and installation, with the total depending on the size and configuration of the system. Hybrid communications systems combine on-site equipment costs with recurring service fees.
However, the advertised subscription price is only one part of the total cost.
To compare a business phone system across deployment options, separate one-time expenses from ongoing charges. Then compare the total cost of each option over the same period.
The prices below are illustrative US market figures in USD, not guaranteed quotes. Actual prices vary by provider, location, features, equipment, promotions, and contract terms.
Business Phone System Costs at a Glance
| Cost or consideration | Cloud | On-premises | Hybrid |
| Upfront costs | Typically lower if using existing devices and softphone apps; setup and hardware may cost extra | PBX equipment, licenses, installation, and any compatible phones or gateways | On-site equipment and installation plus any required backup connectivity |
| Recurring charges | Entry-level plans may start around $15- $25 per user per month with annual billing; advanced plans cost more | Calling service, maintenance, licenses, and administration | Service subscriptions, connectivity, and equipment support |
| Ongoing upkeep | Provider maintains the hosted platform; the business maintains its local network and devices | Business or service partner maintains the system | Responsibilities vary by platform and service agreement |
| Typical fit | Lower upfront spending, distributed teams, and flexible expansion | Direct control over infrastructure and configuration | Cloud flexibility with supported local survivability and configured backup calling |
Quick Example: Ten Users
Ten cloud licenses at $25 per user cost $250 per month. Add one additional number at 5, and the sub total becomes 255 per month, or $15,300 over five years if that subtotal never changes. This excludes setup, devices, usage, taxes, fees, and replacement costs. A more complete budgeting method appears below.
Business Phone System Pricing Models: Per User, Per Line, and Per Channel
Two quotes with the same headline price can produce very different monthly bills if one charges per user and the other per channel. Identify how each provider charges, then calculate the total based on your actual requirements.
Per-User Pricing for Cloud Plans
Cloud phone systems charge a monthly fee for each user. Calling is either unlimited within the US and Canada, drawn from a minute pool shared by the whole team, or billed per minute. On annual contracts, removing a user may not lower the bill until renewal.
Per-Line Pricing for Landlines
Traditional analog services generally charge per line, with each line supporting one simultaneous call. PRI and other digital services can have different channel-based arrangements. When comparing them with cloud calling, count employees who need individual calling capabilities rather than relying only on your current number of lines.
Per-Channel Pricing for SIP Trunks
A SIP trunk connects a compatible phone system to the public telephone network. Fully managed cloud calling plans generally include that connectivity. SIP trunking providers may charge by concurrent-call capacity, usage, bundled calling plans, or a combination. A channel typically represents a simultaneous call, but forwarded calls can consume additional call legs or channels depending on the setup. Ask how peak calling, forwarding, and overages are billed.
Cloud Phone System Prices by Plan Tier
| Tier | Illustrative monthly price per user (annual billing) | Features to compare |
| Entry | Around $15 – $20 | Domestic calling, voicemail, desktop and mobile apps, and basic messaging |
| Midrange | Around $25 – $35 | Expanded messaging, integrations, reporting, and collaboration |
| Advanced | Around $35 – $75 or more; sometimes quote-only | Advanced analytics, administration, specialized call handling, and customer engagement tools |
Some entry plans already include AI tools, recording, or integrations, while more expensive packages may add contact center capabilities. For a comparison of how features differ by vendor, see Sangoma vs. Nextiva. Always confirm current published rates and eligibility requirements before budgeting.
When comparing cloud phone systems, check the features employees will actually use. Recording storage, video meeting limits, and texting allowances can differ even when headline prices look similar.
Monthly billing often costs more than annual billing. Compare both options using live quotes, since rates may change by seat count, contract term, region, and promotion. A monthly invoice does not necessarily mean the agreement is month-to-month.
Check the commitment period separately from the billing schedule.
How Much Do On-Premises Phone Systems Cost?
An on-premises PBX is a phone system hosted on equipment installed at your business location.
The upfront cost depends on capacity, licensing, installation work, and how much existing equipment can be reused. Request an itemized quote rather than estimating the entire deployment from employee count alone.
Upfront costs can include:
- The PBX server or controller.
- Interface cards and analog gateways for older phones or devices.
- Compatible desk phones, where needed.
- Software licenses, configuration, and installation.
Ongoing costs can include:
- SIP trunking or another external calling service.
- Maintenance contracts, repairs, and support.
- Per-extension licensing or software subscriptions, where applicable.
- A telecom administrator’s or service partner’s time.
- Power and cooling for equipment.
- Hardware replacement and migration.
An on-premises business phone system gives administrators direct control over updates and configuration. The business also needs a plan for maintaining supported hardware and software.
Base replacement budgeting on the equipment’s condition, warranty, compatibility, and vendor support dates. Include a replacement allowance from the start, using the supplier’s guidance for the proposed system.
How Much Do Hybrid Phone Systems Cost?
A hybrid business phone system combines cloud and on-premises communications capabilities, although the architecture varies by provider. Costs can include local equipment and installation alongside recurring service fees.
Sangoma’s hybrid phone system supports local call processing and backup routing options. Local processing can preserve internal calling during an internet outage. External calling requires a working connection to the telephone network, such as configured LTE or traditional phone connectivity, along with power for the equipment.
Request a quote that identifies the equipment, backup connections, and support included. Ask which functions remain available during an outage and whether active calls survive a connection failure.
Whether the additional investment is worthwhile depends on the operational and financial impact of an outage.
Setup Costs for Every Phone System
Several one-time expenses can fall outside the advertised subscription price. Include them before comparing proposals.
Setup and Activation Fees
Some providers charge separately for account activation, installation, configuration, or staff training.
Ask for setup fees in writing before signing. Confirm who will configure call routing, voicemail, business hours, and any integrations your team needs.
Desk Phones, Headsets, and Softphone Apps
Cloud softphone apps let employees make business calls on compatible computers and mobile phones they already use. Desk phones and headsets may need to be purchased separately.
On-premises phone systems can also support software-based calling, depending on the platform. If employees need physical phones, include them in the installation budget without counting them twice.
For leased equipment, compare total payments over the agreement with the purchase price. Check ownership, return requirements, and any contract obligations before choosing.
Keeping Your Existing Phone Numbers
Ask your current and prospective providers about number-porting fees and outstanding contractual obligations. Keep the existing service active until the transfer is complete so the business can retain its numbers and avoid an unnecessary interruption.
Network Upgrades You May Need
Before signing, check:
- Internet capacity: Enough bandwidth for peak simultaneous calling alongside other business traffic.
- Router capabilities: Support for correctly configured Quality of Service, or QoS, to prioritize voice traffic on the local network.
- Phone power: Power over Ethernet switches if desk phones will receive power through network cables.
- Network condition: Suitable cabling, wireless coverage where needed, and acceptable latency and packet loss.
QoS cannot compensate for an unreliable internet connection. Have the provider assess the network before assuming existing equipment will support the deployment.
Additional Costs Beyond the Advertised Price
Use the following checklist when reviewing a proposal or speaking with sales.
Add-Ons and Usage Charges
- Additional phone numbers: Some providers charge approximately $5 per additional number per month, but pricing varies. Toll-free numbers may also carry incoming per-minute usage charges.
- Features outside your plan: Call recording, CRM integrations, AI tools and reporting may need a higher tier. Recording plans can also cap storage.
- International calls: Billed per minute, sold as an add-on, or included for set countries. Calls to mobile numbers often cost more.
- Texting: Plans may include limited message allowances or bill for usage. US business texting can also require 10DLC registration and related fees; longer SMS messages may count as multiple segments. See Sangoma’s 10DLC overview.
Taxes and Surcharges
- Federal Universal Service Fund (USF) charges: The contribution factor for October–December 2026 is 42.0%. It applies to assessable interstate and international telecommunications revenues—not automatically to the entire phone bill. The amount a provider passes through to customers depends on its billing methodology and applicable charges. Because the factor changes quarterly, request an itemized estimate.
- 911 fees and state and local taxes: These vary by state and city. Ask for an itemized estimate for each location.
- Provider recovery fees: Charges the provider adds itself, separate from government taxes. Ask what each one covers and whether it can rise during the contract.
Billing and Contract Terms
- Billing schedule: Compare the annual and monthly options described above, including when payment is due and how long the commitment lasts.
- Advertised-price conditions: Confirm whether the rate requires a particular seat count, a new-customer promotion, or a minimum term. Ask what the price becomes after any introductory period.
- Automatic renewal: Record the renewal date, notice deadline, and renewal price. Some agreements require notice 30 days or more before the term ends, but the exact requirement varies.
- Seat reductions and early termination: Ask when licensed seats can be reduced and how cancellation charges are calculated. Depending on the contract, ending service early can make remaining payments due.
How to Estimate Your Business Phone System Cost
Start by estimating your monthly operating expenses, then calculate the total cost over five years.
Your Monthly Cost
Monthly cost = (users × plan price) + add-ons + extra numbers + usage charges + taxes and fees
For 10 users on a $25 plan with one additional number priced at $5:
(10 × $25) + $5 = $255 per month before usage charges, taxes, and fees
Add the charges shown on your own quote. If that extra number is toll-free, its rental price may not include incoming usage.
List one-time expenses separately: phones, setup, porting, and network upgrades. Include any additional recurring connectivity costs, such as a backup internet service. For an on-premises proposal, replace the cloud subscription component with recurring trunking, licensing, maintenance, and administration expenses.
Your Total Cost Over Five Years
Five-year total cost of ownership = initial costs + all recurring costs over 60 months + equipment replacement and other additional expenses
At an unchanged $255 monthly subtotal, the example above comes to $15,300 over five years before one-time expenses and excluded charges.
Five years provides a common budgeting period for comparing a larger upfront purchase with ongoing subscriptions. The resulting estimate is the system’s five-year total cost of ownership.
If staffing, prices, or usage change, calculate costs year by year and sum the results. Include support and administration consistently across proposals.
Choosing Between Cloud, On-Premises, and Hybrid Phone Systems
- Choose cloud if you want lower upfront spending or expect your team’s size or locations to change. Subscriptions continue throughout use, and the agreement determines when seat changes affect billing. Read more about what this choice means in practice in our Cloud Phone Systems Guide.
- Choose on-premises deployment if you want direct control over the system and can support the initial investment and ongoing upkeep. Include maintenance, administration, and eventual equipment replacement. Read more about choosing on-premises business communications setup, especially if you operate in a highly regulated industry.
- Choose a hybrid phone system if maintaining local calling and backup external connectivity justifies additional equipment and service costs. Confirm the outage capabilities included in the quote. Also see: Why Hybrid UC is the Best of Both Worlds for Scalability and Control
Get a Business Phone System Quote From Sangoma
Every business has different communications needs, and the right phone system should fit both your operations and your budget.
Sangoma offers cloud, hybrid, and on-premises communications, allowing businesses to choose a deployment model that fits their existing infrastructure, reliability needs, and growth plans.
Depending on the selected platform and plan, Sangoma solutions offer business calling, messaging, video collaboration, advanced call handling, and supported integrations. Available capabilities, licensing, support arrangements, and contract terms vary by deployment.
Sangoma also provides SIP trunking, managed networking, connectivity, and security services. Bringing compatible services together through one provider can simplify deployment, billing, troubleshooting, and ongoing management.
Whether you’re replacing an aging PBX, moving to the cloud, or considering a hybrid solution for added local survivability, Sangoma can help you compare your options and understand the complete cost.
Talk to a Sangoma expert to get a quote tailored to your users, locations, and requirements.
Frequently Asked Questions
Is a cloud phone system cheaper than an on-premises PBX?
Cloud plans often require less upfront spending because you do not need to buy and maintain a local PBX server. Over several years, however, subscriptions and add-ons can add up. Compare equipment, licenses, connectivity, maintenance, administration, and replacement costs over the same period before deciding.
How much should a 10-person business budget for cloud calling?
At an illustrative $25 per user per month, ten licenses cost $250 monthly before additional numbers, usage, equipment, taxes, and fees. Adding one $5 number brings that example to $255 monthly. Request a quote reflecting your team’s actual features, calling patterns, and contract terms.
Do we need to purchase desk phones?
Not necessarily. Many cloud platforms allow employees to call using supported desktop or mobile apps. Some roles may still benefit from compatible desk phones or headsets. Include any device, provisioning, and support expenses in your comparison.
What extra charges should we watch for?
Ask about setup and number porting, international and toll-free calling, texting registration, recording storage, premium features, additional numbers, support, equipment rental, taxes, provider-imposed recovery fees, and early termination. Get an itemized quote rather than comparing advertised seat prices alone.
Is hybrid worth the extra cost?
It can be for businesses where an internet outage would interrupt critical communications. Hybrid systems vary, so ask precisely which internal and external calls remain available and what equipment, power, backup connectivity, and recurring services are required.