- Apr 22, 2026
- 7 min read
How Much Does a VoIP Phone System Really Cost for a Small Business?
VoIP providers are notorious for leading with a low per-user price that looks great until you read the fine print. Taxes and fees. Add-on charges for features that should be standard. Annual commitment requirements hidden in the pricing tiers. Here is a complete, honest breakdown of what a VoIP phone system actually costs for a small business — so you know what to expect before you sign up for anything.
Most VoIP providers advertise a per-user monthly price that assumes annual billing. The monthly rate for a month-to-month plan is typically 20 to 30 percent higher. So a plan advertised at $15 per user per month might actually cost $19 per user per month if you do not commit to a year upfront. Then add taxes and regulatory fees — typically 15 to 25 percent on top of the base rate — E911 service fees, number porting fees if you are bringing your own number, and overage charges if your plan has minute limits.
If you want physical desk phones, you will need to budget for IP phones. Business-grade Grandstream desk phones run $50 to $150 per phone depending on the model. Some providers lease phones for an additional monthly fee. Others require you to buy their proprietary hardware. If you use softphones — apps on your computer or mobile device — hardware cost is zero.
What is typically included at the base price is a local phone number, basic calling for inbound and outbound, voicemail, and a mobile app. What usually costs extra is an auto-attendant or IVR, call recording, AI receptionist, eFax, additional numbers, international calling, and advanced analytics. Read the fine print before you assume a feature is included.
For a solo operator with 1 to 2 users, expect to pay $20 to $40 per month for the VoIP plan, $80 to $120 one-time for an optional IP phone, and $15 to $35 per month if you add an AI receptionist. Total monthly cost runs $35 to $75. For a small team of 5 users, the VoIP plan runs $100 to $150 per month, IP phones cost $400 to $600 one-time, an AI receptionist is $35 per month, and eFax is $16 per month. Total monthly cost runs $151 to $201.
DiaVoice pricing is transparent with no hidden fees. DiaPBX is $20 per user per month and includes extensions, IVR, call recording, voicemail-to-email, and DiaVoice Go mobile app. DiaVoice AI starts at $15 per month for a full AI receptionist with 24/7 call handling. DiaFax is $16 per month for HIPAA-compliant eFax. DiaCRM is $39 per month per account for an auto-logging CRM built into your phone dashboard. No contracts. No setup fees. Number porting included at no charge.
Get a straight answer on pricing for your specific setup. Call (256) 724-3100 or visit diavoice.net — no pressure, no sales tactics.
Was this post helpful?
Related articles
How Much Does a Business Phone System Cost in 2026?
A straightforward breakdown of what business phone systems actually cost — from traditional landlines to cloud PBX to AI-powered solutions.
Mar 10, 2026
How Much Does Visual Voicemail Cost for a Small Business?
Visual voicemail pricing ranges from free to $30/month depending on the provider. Here's the complete cost breakdown — and why DiaVoice includes it free on every account.
May 14, 2026
DiaVoice vs RingCentral: The Real Cost of a Business Phone System in 2026
RingCentral advertises $20/user/month but the real cost is much higher. Here is an honest breakdown of what you actually pay.
Dec 31, 2026
Why Small Businesses Are Leaving Nextiva for DiaVoice
Nextiva starts at $15/user/month but everything you need is a paid add-on. Here is why small businesses are switching to all-inclusive pricing.
Mar 21, 2026
What Is an AI Receptionist and Does My Small Business Need One?
AI receptionists answer business calls 24/7 using conversational voice AI. Here is what they actually do, how much they cost, and whether your small business needs one in 2026.
Apr 22, 2026
What Is a BAA and Why Does Your Fax Service Need One?
If your business handles patient information by fax, you need a Business Associate Agreement from your eFax provider. Here is what a BAA is, why it matters, and what happens without one.
Apr 22, 2026