The honest answer to the Teams Phone vs Zoom Phone cost question is that the per user sticker price is the least important number on the page. Both platforms advertise a calling license in roughly the same range, so a side by side of those two figures tells you almost nothing. What decides the real bill is what you already own, how you connect to the public phone network, and how many of the seats you bought are actually placing calls. Most mid market companies we review are overpaying on cloud telephony not because they picked the wrong vendor but because they are running pieces of both, or paying for full calling seats for staff who never dial out.
This guide walks the full cost stack for each platform, the line items that hide below the headline rate, and the decision framework that keeps you from buying calling capacity twice.
Teams Phone vs Zoom Phone cost: the real comparison
The reason a simple price match misleads buyers is that the two products sit on different foundations. Zoom Phone is the calling product attached to the Zoom platform. Teams Phone is the calling product attached to Microsoft 365, which most enterprises already license for email, documents, and meetings. So the fair comparison is never one calling line against another. It is the whole cost of being on Zoom against the marginal cost of switching on calling inside a Microsoft estate you have already paid for.
As a rough anchor, the Teams Phone calling add on lists around 8 dollars per user per month, and Zoom Phone plans range from a metered pay as you go tier near 10 dollars up to unlimited regional and global plans in the mid teens and higher, as of mid 2025. Treat those as starting points only, since both vendors revise list pricing and bundle terms regularly. The point is that the add on numbers are close enough that they should not drive the decision. The platform context underneath them should.
Source: Microsoft Teams Phone and Zoom Phone public pricing pages, list pricing as of mid 2025. Confirm current figures and your negotiated rate before modeling.
What is actually included in each calling license
A calling license is a control layer. It gives a user a phone number, voicemail, call handling, and the right to use the softphone. What it does not automatically include is the connection to the outside phone network, and that connection is where buyers get surprised.
The Teams Phone connection routes
Teams Phone on its own lets users call each other and handle calls inside the tenant. To reach external numbers you add one of three routes. A Microsoft Calling Plan bundles minutes from Microsoft and is the simplest to switch on but rarely the cheapest at scale. Operator Connect lets you bring an approved carrier into the Teams admin center with less setup. Direct Routing connects your own session border controller and carrier contract, which is usually the lowest cost per minute for high volume but carries setup and management overhead. The route you choose can swing the per user cost by several dollars a month, so the calling add on price is only the first layer.
The Zoom Phone connection model
Zoom Phone bundles calling more directly into its plan tiers. Metered plans charge for usage, unlimited plans bundle domestic minutes, and global or regional plans extend that footprint. Bring your own carrier is supported for larger deployments. The packaging feels simpler at first because the minutes are folded into the tier, but that simplicity can mask overspend when you assign unlimited seats to people who place a handful of calls a month.
The hidden line items that move the bill
Once you look past the per user rate, the same set of extras appears on both platforms and tends to add more to the invoice than the headline ever suggested.
- International and toll free usage. Bundled minutes usually cover domestic calling only. Heavy international callers and inbound toll free numbers meter separately and can dominate a usage bill.
- Common area and shared devices. Reception phones, conference room phones, and warehouse handsets each need a license. Buying full user calling seats for these instead of the cheaper common area option is a frequent leak.
- Contact center seats. Both vendors sell a separate, pricier contact center product. Teams pulled into a support function without the right licensing, or an over scoped Zoom Contact Center rollout, can quietly dwarf the base phone spend.
- Compliance and emergency calling. E911 location services, call recording, and retention add ons carry their own per user or per tenant charges that buyers often forget to model.
- Number porting and provisioning. One time porting fees and ongoing number charges accumulate across a large estate.
- Leaver seats. Calling licenses assigned to departed staff are pure waste and are among the easiest reclamations to make once you have a clean inventory.
This is the same pattern we see across the wider stack. The headline rate gets the scrutiny in procurement while the add ons, the usage, and the unused seats slip through unreviewed. Mapping those is central to digital workplace cost optimization across every tool, not just telephony.
The expensive mistake: running both at once
The single largest avoidable cost in this category is not choosing the more expensive platform. It is choosing both. It happens easily. A company standardises on Teams, then acquires a firm running Zoom Phone, and the two estates sit side by side for years. Or a single department insists on Zoom while the rest of the business runs Microsoft, so heavy users end up with two numbers and two licenses.
Two cloud phone platforms means two carrier relationships, two sets of numbers to manage, duplicated admin effort, and in the worst cases a per user license on each side for the same person. If you already pay for Microsoft 365 across the company, the default question is whether Zoom Phone is earning its place on top of calling capability you could switch on inside a platform you own. Sometimes it is, for a contact center or a specialized workflow. Often it is not. Working through that overlap is the heart of collaboration tool rationalization, and it usually pays for itself many times over.
How to decide which calling platform to keep
The decision is less about features and more about your existing estate and your call profile. A short framework keeps it honest.
Start from what you already own
If you are a committed Microsoft 365 shop, Teams Phone is the lower friction and usually lower total cost path, because the platform underneath it is a sunk cost. If Microsoft 365 is light or absent in your environment, that advantage disappears and Zoom Phone competes on its own merits.
Profile your actual callers
Pull usage data and separate true callers from nominal ones. A large share of office staff place almost no outbound public network calls. Those users do not need a full calling seat at all. Right sizing the count to active callers, then covering the rest with shared or common area licenses, often saves more than any platform switch. This is the same discipline covered in our look at Zoom Phone and add on cost review.
Model the full stack, not the add on
Build the comparison as total platform cost over the contract term, including connection route, usage, common area devices, compliance add ons, and any contact center seats. When you compare full stacks rather than calling lines, the cheaper option is usually obvious, and it is frequently the platform you already pay for.
Consolidate before you renew
If you discover you are running both, resolve the overlap before the next renewal rather than after. Walking into a Zoom or Microsoft renewal having already decided which platform you are consolidating onto gives you leverage and removes the risk of signing another multi year commitment to a tool you are about to retire. The broader case for trimming duplicate meeting and calling tools sits in consolidating video conferencing tools and the question of whether you even need a second platform at all in do you need Zoom if you have Microsoft Teams.
Where the savings come from
In our reviews the telephony savings rarely come from negotiating the per user rate down by a dollar. They come from three moves in order. First, eliminate any duplication so nobody is licensed on two platforms and no department is paying for a second calling tool the business does not need. Second, right size the seat count to people who actually call, and push the rest to common area or shared licenses. Third, pick the lowest cost connection route for your volume, which for larger estates often means direct routing through your own carrier rather than bundled minutes. Only after those three is renewal negotiation the lever, and by then you are negotiating a smaller, cleaner contract from a stronger position.
For the full picture of how calling fits the wider meeting and messaging spend, the collaboration and video tool cost pillar maps every overlapping tool in the category and where each one tends to leak money.