If you are shopping for a new phone system, the first question is simple: what will it cost each month, and what will it cost to get started? The honest answer is a range. Prices depend on how many people you have, what kind of system you choose and how much help you need during setup. This guide breaks the costs into pieces so you can build a real budget.
Most San Diego offices today choose a hosted VoIP system because it avoids big upfront spending and moves the phones to the internet. Older on-site systems still exist, but they carry equipment costs, maintenance contracts and repair visits. We cover both so you can compare them fairly.
Prices below are typical ranges, not quotes. Your final number will shift with your needs. Use these figures to spot a quote that looks too low, too high or too vague.
The Short Answer: Typical Price Ranges
For a hosted system, most San Diego businesses pay typically $20 to $45 per user per month. The low end covers basic calling and voicemail. The high end adds video meetings, call recording, advanced call routing and reporting.
One-time costs are usually modest with hosted service. Expect setup, number porting and training to run from nothing to a few hundred dollars for a small office. Larger offices with many phones and custom call flows pay more.
| Cost Item | Typical Range | How It Is Billed |
|---|---|---|
| Hosted VoIP seats | $20 to $45 per user | Monthly |
| Desk phones | $80 to $300 each | One time |
| Setup & configuration | $0 to $2,500 | One time |
| Number porting | $0 to $25 per number | One time |
| Taxes & fees | 8% to 15% of the bill | Monthly |
Treat these as planning numbers. A written quote that lists every line is the only number you should trust.
What Drives the Monthly Bill
Three things move your monthly cost more than anything else: user count, feature tier and call volume. Each user needs a seat. Each seat sits in a plan, and plans differ in what they include.
User Count & Seat Types
Not every person needs a full seat. A receptionist and a sales rep need full calling features. A warehouse shared line or a lobby phone can often use a cheaper basic seat. Sorting your team into types before you shop can trim the bill noticeably.
Feature Tier
Basic tiers cover calling, voicemail and a mobile app. Mid tiers add auto attendants, ring groups and video. Top tiers add call recording, analytics and customer system links. Pay for the tier your team will actually use.
Minutes, Faxing & Toll-Free
Many plans include unlimited US calling. Toll-free numbers, international calls and online fax often cost extra. If your office takes many customer calls, ask how toll-free minutes are billed.
A single plan tier can change the per-user price by $10 to $20 a month.
Hosted vs. On-Site: A Cost Comparison
An on-site phone system, often called a PBX, lives in a closet in your office. You buy the equipment, pay someone to maintain it and pay a phone carrier for lines. Hosted service moves the system to the provider and bills you monthly.
| Factor | Hosted System | On-Site PBX |
|---|---|---|
| Upfront cost | Low, mostly phones | High, often $5,000 to $30,000+ |
| Monthly cost | Per user fee | Lines plus maintenance |
| Adding a user | Add a seat in minutes | May need hardware or licenses |
| Power or internet outage | Calls reroute to cell phones | Calls drop until power returns |
| Upgrades | Included | Paid projects |
On-site can still make sense for a large single site with special needs. For most offices under 100 people, hosted wins on cost and flexibility. If you want to see how the options differ in detail, our page on business phone systems walks through each type.
Hardware & Setup Costs
Hardware is the part people forget. You have three choices. Desk phones, softphones on a computer or mobile apps. Many offices mix them.
- Basic desk phone: about $80 to $150 each.
- Mid-range phone with color screen: about $150 to $250.
- Reception console or conference speakerphone: about $250 to $600.
- Headsets: about $40 to $200 per person.
- Softphone app: usually included in the seat price.
Setup covers building your call flows, programming phones, moving numbers and training staff. Some providers include it. Others charge a flat project fee. Ask whether the fee covers on-site help or only remote setup.
Your network matters too. Voice calls need a steady connection. If your switches or Wi-Fi are weak, budget for upgrades or you will blame the phones for problems the network caused.
A small office with ten desk phones typically spends $800 to $2,000 on handsets alone.
Budget Examples by Office Size
Real numbers help more than ranges. These examples use mid-tier hosted service and typical hardware choices. Your results will vary.
| Office Size | Monthly Estimate | One-Time Estimate | Notes |
|---|---|---|---|
| 5 users, a Hillcrest dental office | $110 to $200 | $500 to $1,200 | Mostly desk phones, one reception console |
| 15 users, a Kearny Mesa distributor | $300 to $600 | $1,500 to $3,500 | Auto attendant and call queues |
| 40 users, a UTC wealth management firm | $900 to $1,700 | $4,000 to $9,000 | Call recording and mobile apps |
| Two sites, 25 users, Carlsbad and Mission Valley | $600 to $1,100 | $3,000 to $6,000 | Shared extensions between sites |
Notice that monthly cost grows with people, while one-time cost grows with phones and complexity. A team that works mostly from laptops and mobile apps can cut the hardware line sharply.
Hidden Costs to Watch For
The monthly price on a brochure is rarely the final price. Read the quote line by line and look for these items.
- Taxes and regulatory fees. Telecom taxes and surcharges can add roughly 8% to 15% to your bill.
- Contract length. Longer terms lower the price but lock you in. Ask what happens if you add or remove users.
- Early termination fees. Some contracts charge the remaining balance if you leave.
- Number porting fees. Moving numbers from your old carrier may carry per-number charges.
- Overage charges. Toll-free minutes, international calls and extra storage can be billed on top.
- Support fees. Some providers charge for help beyond basic phone support.
The cheapest advertised price often leaves out two or three of these. Ask for the all-in monthly total, taxes included, for your exact user count.
Teams Phone & Other Options
If your staff already live in Microsoft 365, you may be able to use Microsoft Teams Phone as your business line. The cost is a Teams Phone license per user plus a calling plan or a carrier connection. It can reduce the number of separate tools and logins.
The tradeoff is that Teams needs good setup to behave like a real phone system. Reception desks, call queues and shared lines need planning. Price it side by side with a dedicated VoIP service before you decide.
Whichever path you choose, count the true total. Add licenses, calling, hardware, headsets, setup and support. Then divide by users. That per-user number is the one that lets you compare fairly.
A Teams Phone license often costs about $8 to $12 per user before calling plans.
How to Get an Accurate Quote
Good quotes start with good information. Before you call anyone, gather a few facts so every provider prices the same thing.
- Number of people who need a phone and how many only need an app.
- Number of locations and whether they should share extensions.
- Existing phone numbers you want to keep.
- Features you must have, such as call recording or a receptionist console.
- Your internet speed and the age of your network equipment.
Ask each provider for the same four numbers: monthly total with taxes, one-time setup, hardware and contract term. Lay them side by side. The right choice is usually clear once the numbers match.
Phone cost is easy to misjudge because it hides in several places. The seat price is only one part. Hardware, setup, taxes, porting and contract terms all change the total. When you add them up for your own team, the real monthly number often looks different from the headline price.
A calm next step is to get a free IT assessment. We review your network, count your users and send a written quote with every line itemized. You can compare it against any other proposal and decide on your own schedule.
FAQs
How much does a business phone system cost per month in San Diego?
Most San Diego businesses pay typically $20 to $45 per user per month for hosted service. Basic plans sit at the low end. Plans with video, call recording and reporting cost more. Add taxes and fees of roughly 8% to 15% on top.
Is VoIP cheaper than a traditional phone system?
For most offices, yes. VoIP avoids large equipment purchases and expensive maintenance contracts. Calling is usually included in the monthly fee. A large single site with unusual needs may still find an on-site system worth the cost.
What does setup usually cost?
Setup typically runs from nothing to a few hundred dollars for a small office, and up to a few thousand for larger or multi-site offices. Costs depend on phone count, call flow design, number porting and whether a technician visits your office.
Do I have to buy desk phones?
No. Many teams use softphone apps on laptops and mobile phones, which are often included in the seat price. Desk phones still make sense for reception, shared areas and staff who prefer them. Mixing both is common.
Will I need to upgrade my internet?
Maybe. Voice needs stable bandwidth and low delay more than raw speed. A weak router, old switches or crowded Wi-Fi can cause choppy calls. A network check before you switch tells you if upgrades belong in the budget.
Can I keep my existing phone numbers?
Usually yes. Providers can port your numbers to the new service, and many charge a small fee per number or nothing at all. Porting can take days to weeks, so start early and keep your old service active until the switch is complete.
Are long contracts worth it?
Longer terms often lower the monthly price, but they lock you in. Look for flexibility to add or remove users. Ask about early termination fees. A shorter term at a slightly higher rate can be safer if your headcount changes often.
What happens to calls if the power or internet goes out?
With a hosted system, calls can reroute to cell phones or another office automatically. That is a real advantage over an on-site system, which stops working when power is lost. Set up your failover rules during installation.
What taxes and fees apply to business phone service?
Telecom services carry taxes and regulatory surcharges. Together they typically add about 8% to 15% to the bill, depending on the plan. Ask for a quote that shows the all-in monthly total so there are no surprises on the first invoice.
How do I compare quotes from different providers?
Ask each one for the same items: monthly cost with taxes, one-time setup, hardware, contract length and included features. Divide the total by your user count to get a per-user figure. That makes quotes directly comparable.
Tyler Navarro
Editorial Director, Giga San Diego
Tyler runs the Giga San Diego editorial desk and turns what our technicians see every week, from Santa Ana wind outages to office moves along I-5, into practical guides for San Diego business owners. He grew up in the county and has spent more than 15 years in IT services, starting on a help desk in Kearny Mesa and later leading network and support projects for biotech firms, clinics, logistics companies and defense suppliers. He holds Microsoft 365 and CompTIA Security+ certifications. Lately he focuses on how AI tools such as Microsoft Copilot can help small teams without exposing sensitive data, and every guide he writes is reviewed by a working technician before it goes live.