Capacity-based vs per-seat pricing for team chat

Team-chat pricing is almost universally per-seat. You pay a monthly fee per user, usually between five and twenty-five dollars, and the bill scales linearly with headcount. That model is familiar enough that most buyers never question it — until they do the arithmetic for a growing team and realise what it compounds to. It is the kind of thing that feels reasonable at ten people and starts to feel like a structural tax at fifty.

Capacity-based pricing is the alternative. You pay a flat amount for a tier that covers up to a fixed number of users. The fifteenth hire inside the tier does not change the bill. Both models are defensible, but they produce very different outcomes depending on how your team grows, and I think the difference is worth understanding through the lens of incentives rather than just sticker prices.

How per-seat pricing actually scales

Take Slack Pro at $7.25 per user per month on annual billing. At ten users that is $870 per year. At fifty it is $4,350. At two hundred it is $17,400. The per-user price stays stable, but the total climbs in lockstep with headcount. Add SSO on Slack Business+ at $15 per user per month and that same two-hundred-person company is paying $36,000 per year for a chat tool.

Mattermost Professional runs $10 per user per month — $6,000 per year at fifty users, $24,000 at two hundred. Microsoft Teams Essentials at $4 per user per month is $2,400 at fifty, $9,600 at two hundred. The pattern is the same everywhere. Growing the team grows the bill, linearly and predictably, which sounds comforting until you realise the comfort is in the predictability of an ever-increasing cost.

How capacity-based pricing scales

Capacity pricing works in tiers. TheChatApp Cloud Business is €1,690 per year for up to fifty users, and Cloud Enterprise is €12,490 per year for up to two hundred. The eleventh hire, the thirtieth, and the forty-ninth all cost the same as the tenth: nothing. Only when the team crosses the tier boundary does the cost change, and it changes once, not fifty times.

The economic consequence is that the marginal cost of a new hire is zero inside a tier. That matters because hiring decisions should be made on the merits of the hire, not on whether the chat bill can absorb another seat. It is a subtle thing, but incentive structures shape behaviour in ways people rarely notice. When every new person adds a line item, there is a quiet friction against growth that has nothing to do with the value that person brings.

When per-seat actually makes sense

Per-seat pricing is not irrational. It makes sense in two specific situations.

The first is teams that churn heavily. If your headcount fluctuates by twenty percent a quarter, per-seat lets you scale down without waiting for a contract renewal. Capacity pricing locks you to a tier for the billing period, and if you are consistently below the threshold the tier starts to feel like waste.

The second is teams already paying a vendor-bundled rate. For existing Microsoft 365 tenants, Teams is effectively bundled into the Office licence. For Google Workspace, Google Chat is bundled the same way. If you are already paying for the productivity suite, the marginal cost of the chat tool is effectively zero and the comparison becomes irrelevant.

For everyone else — small and mid-sized teams not locked into a suite, growing teams that hire in bursts, privacy-aware teams that want to avoid a per-seat upsell path — capacity pricing is usually the better match.

The real numbers at fifty users

At fifty users on annual billing, the 2026 list prices for the major players look like this: Microsoft Teams Essentials at $2,400 per year. Zulip Cloud Standard at $4,000. Slack Pro at $4,350. Rocket.Chat Pro at $4,800. Mattermost Professional at $6,000. Webex Suite Business at $15,000. TheChatApp Cloud Business at €1,690 per year total.

The headline gap is real, but it is not the whole story. Slack ships a marketplace of over two thousand integrations and compliance certifications that TheChatApp does not have today. Microsoft Teams ships Office interop. Mattermost ships government certifications. If your team needs those specific things, the per-seat price is buying something concrete. If it does not, you are paying for features you will never use, and that is a cost with no return.

What to check on your own chat bill

Three questions that usually reveal whether per-seat is working for you. First, what has the total chat bill grown to over the last twelve months, and was that growth planned or did it just happen? Second, how many of the paid features you are charged for are actually used day to day by more than ten percent of the team? Third, if you doubled headcount next year, what would the bill become — and is that a number you are willing to commit to before you have even hired those people?

Where to go next

If capacity pricing sounds like the right fit, the pricing page covers TheChatApp's tiers in full, including the self-hosted one-time licence. For a per-competitor breakdown, see the Slack comparison, the Microsoft Teams comparison, or the Mattermost comparison.