Microsoft License Types Explained for 2026: What Businesses Actually Need to Know
- Brandon Alsup
- May 15, 2024
- 10 min read
Updated: 3 days ago
Microsoft licensing hasn’t gotten simpler. Kosh Solutions has been working with Microsoft for over 20 years. This guide reflects how organizations are making decisions in 2026.
Microsoft licensing confuses good, upstanding, smart people (like yours truly and perhaps yourself) for a reason. The names are similar. The features overlap. Microsoft changes packaging, billing, and bundles often enough that even savvy business owners end up asking the same thing:
What do we actually need?
At Kosh, we usually do not get pulled into this conversation because someone wants a licensing lesson. We get pulled in because something is not lining up.
A company wants stronger security controls and realizes the license they bought does not support it. A frontline user needs a fuller email experience and runs into limits. An executive mailbox is getting out of hand. A business is paying for enterprise licensing across the board when only a handful of users actually need it.
That is usually where the real licensing conversation starts.
Not with Microsoft’s product catalog. With a problem.
Most businesses are not really choosing from every Microsoft license Microsoft has ever made
Technically, yes, there are still multiple licensing paths. OEM still exists. Retail still exists. Volume licensing still exists. For some organizations, those still matter.
But for most small and midsize businesses, the practical decision in 2026 is much narrower:
Do we need a device-based one-time license at all?
Should this user be on Microsoft 365?
Is Business Premium enough?
Is this person actually a fit for F3?
Do we need E3 or E5 for some users because of mailbox size, security, or compliance?
That is the real-world version of the question.
Inside Kosh, the conversation is usually less “Which Microsoft program is this?” and more “What does this person actually do all day, and what does the business need to protect?”
That is a much better place to start.
Business Premium is usually the first serious option
For a lot of organizations under 300 users, Microsoft 365 Business Premium is where the conversation becomes practical. Microsoft positions its business plans, including Business Premium, for organizations with up to 300 users, and Microsoft’s current plan details show Business Premium includes advanced identity and access management, desktop apps, business email, and 1 TB of cloud storage per user. Microsoft also documents that Business Premium includes Entra ID P1.
Why Entra ID P1 actually matters
At a practical level, Entra ID P1 is what allows you to control how people access your systems.
Without it, you’re mostly relying on:
Username + password
Basic MFA (if enabled)
With it, you start controlling who can access what, from where, under what conditions.
The simplest way to think about it
Without Entra ID P1 → You react to problems
With Entra ID P1 → You prevent problems
That matters because a lot of businesses buy too close to the floor.
They start with a cheaper plan because it looks sensible in a spreadsheet. Then six months later they want Conditional Access, stronger device management, or a cleaner security posture, and suddenly the “budget” option is not really a budget option anymore.
One of the common Kosh observations here is simple: many companies do not realize they are making a security decision when they think they are making a software decision.
Business Premium is often the point where Microsoft 365 starts fitting the way a real business operates.
F3 is useful, but only when the role actually fits
This is probably one of the most misunderstood licenses in the stack.
Microsoft 365 Frontline F3 can be a very good fit for the right user. Microsoft says F3 includes Exchange Kiosk with a 2 GB mailbox per user, and that email access is through Outlook on the web rather than the full desktop Outlook experience.
That sounds fine until a business starts putting the wrong people on it.
We have seen this pattern before. Someone is treated like a lightweight user because their title sounds operational. Then real life kicks in. They are copied on schedules, approvals, vendor conversations, internal coordination, and a pile of daily email that does not stay “lightweight” for very long.
Now the business is frustrated, the user is frustrated, and the license is getting blamed for doing exactly what it was designed to do.
F3 is not bad. It is just specific.
A good rule of thumb is this: if the user lives in a lean frontline workflow, F3 may make sense. If the user is drifting toward a full business-email-and-desktop-app experience, it often does not.
E3 and E5 are usually about needs, not status
A lot of businesses think of E3 and E5 as “bigger company licenses.”
That is partly true, but it is not the useful part.
The useful part is understanding what pushes someone into that tier. Microsoft’s service descriptions tie Business Premium to Exchange Online Plan 1, while E3 and E5 map to Exchange Online Plan 2. Microsoft’s Exchange documentation shows Plan 1 with a 50 GB primary mailbox and Plan 2 with a 100 GB primary mailbox. Microsoft also states that Entra ID P1 is included with Microsoft 365 E3, while Entra ID P2 is included with Microsoft 365 E5.
That is where the real conversation gets more concrete.
Do you have users with large mailboxes? Do you have stronger compliance demands? Do you have leadership, finance, HR, or regulated roles that justify a higher security tier? Are you buying enterprise licensing for everyone because it feels safer, even though only a subset of users really needs it?
Those are the questions that matter.
Kosh has seen both mistakes: companies paying for more than they need, and companies trying to squeeze serious users into licenses that are clearly too light.
Neither one is efficient.
Mailbox limits expose bad decisions quickly
If there is one topic that cuts through the noise fast, it is email.
Microsoft’s own plan details make the differences pretty clear. Exchange Online Plan 1 includes a 50 GB primary mailbox. Exchange Online Plan 2 includes a 100 GB primary mailbox. F3 gives the user 2 GB.
That sounds like a small technical detail until it becomes a daily annoyance.
At Kosh, mailbox size is one of the first practical questions worth asking because it tells you a lot very quickly. Some organizations really do have light users. Others have users who have effectively turned Outlook into a filing cabinet, a task manager, and a record-retention system all at once.
The wrong license tends to reveal itself there.
This is usually a security conversation wearing a licensing costume
One of the reasons licensing gets confusing is that businesses think they are comparing software bundles.
In practice, they are often comparing security posture.
Business Premium includes advanced identity and access management, and - as stated above - Business Premium includes Entra ID P1. Conditional Access requires at least Entra ID P1. E3 also includes Entra ID P1, while E5 includes Entra ID P2.
That is why Kosh conversations around licensing often sound like this:
Do you need better control over how people sign in?
Are you standardizing devices and security policies?
Are there users who carry more risk than others?
Are you paying enterprise pricing but not really using enterprise capabilities?
That is not a catalog discussion. That is operations.
A quick note for government, regulated organizations, and nonprofits
At Kosh, this is where the licensing conversation usually gets more nitty gritty.
If you are a government entity, government contractor, nonprofit, healthcare organization, or any business dealing with heavier compliance requirements, Microsoft licensing is not just about apps and mailbox size. It is also about environment, eligibility, data handling, and what security and compliance capabilities are actually included in the plan.
For government customers, Microsoft offers separate government cloud environments such as GCC, GCC High, and DoD, and Microsoft is clear that these are not just pricing variations of the commercial plans. They come with different eligibility rules, different compliance alignments, and in some cases feature differences compared to commercial Microsoft 365. Microsoft states that GCC is designed to support federal cloud requirements including FedRAMP High, DFARS, and requirements tied to criminal justice and federal tax information systems, while GCC High and DoD are built for more sensitive federal and defense workloads (CMMC and Microsoft). Microsoft also notes that DoD licensing is limited to Department of Defense entities, while eligible non-DoD organizations such as qualified defense contractors may need GCC High instead.
That matters because a regulated organization can make the wrong decision by looking only at price or plan names. A commercial E3 or E5 conversation is not always the same as a government G3 or G5 conversation, and some capabilities differ across compliant cloud environments. Microsoft’s own documentation specifically says there are feature differences between commercial offerings and GCC High / DoD because of the architecture and certification requirements of those environments.
Nonprofits should pay close attention too, because Microsoft still offers meaningful nonprofit support, but the structure has changed. Microsoft says eligible nonprofits can still receive up to 300 granted Microsoft 365 Business Basic licenses, and discounts of up to 75% on many Microsoft 365 offers, including Business Premium and Business Standard. Microsoft’s current nonprofit pricing pages also show discounted nonprofit pricing for Business Premium and Standard, while noting that pricing can vary by country and currency. Microsoft also announced that nonprofit pricing was adjusted in line with commercial pricing effective July 1, 2026.
The practical takeaway is simple: if your organization has compliance, regulatory, public-sector, or nonprofit considerations, licensing should be reviewed with those realities in mind from the beginning. This is one of the easiest places to underbuy, overbuy, or choose the wrong Microsoft environment entirely.
What Kosh usually recommends in plain English
If the business is under 300 users and wants a strong, modern baseline, Business Premium is often where we start the conversation. It tends to be the plan where the business gets a more complete Microsoft environment instead of just a collection of apps.
If the user is truly frontline and their work is genuinely light, F3 can make sense. But the role has to fit the license, not the other way around.
If the organization is larger, more regulated, more security-sensitive, or has heavier mailbox and compliance demands, E3 or E5 deserves a serious look.
And if somebody is trying to solve a modern business problem with the thinnest possible license because it looks cheaper this quarter, that decision usually deserves a second look.
License / Plan | Best fit | What the decision maker should know | Common mistake | Kosh read |
Office 2024 / one-time purchase | Very limited cases where a business truly wants classic desktop apps on a single machine and does not need the broader Microsoft 365 cloud stack | One-time purchase for 1 PC or Mac; classic desktop apps; does not include the services that come with Microsoft 365; no upgrade option to the next major release. (Microsoft) | Treating this like a cheaper substitute for Microsoft 365 when the business really needs cloud services, user-based licensing, or stronger security controls | Never recommended. |
Microsoft 365 Business Premium | Most small and midsize businesses that want a serious Microsoft baseline | Built for organizations with up to 300 users; includes desktop, web, and mobile apps, business email, 1 TB cloud storage per user, advanced identity and access management, and Entra ID P1. (Microsoft) | Buying too low in the stack, then discovering later that security, device management, or access-control needs were underestimated | Often the best starting point for a business that wants Microsoft 365 to behave like a business platform |
Microsoft 365 Frontline F3 | True frontline or light-duty users who do not need the full desktop/business-email experience | Designed for frontline workers; includes Exchange Kiosk with a 2 GB mailbox and Outlook on the web only. (Microsoft) | Putting too many “real office users” on F3 because it looks cheaper | Good when the role really is frontline; frustrating when the role has drifted into heavier email and desktop workflows |
Microsoft 365 E3 | Larger, more complex, or more regulated environments that need enterprise licensing without going all the way to E5 | Enterprise family plan; E3 users can get a 100 GB mailbox; includes Entra ID P1. (Microsoft Learn) | Buying E3 for everyone by default instead of matching licenses to actual user needs | Strong option when mailbox size, governance, or enterprise standardization starts to matter |
Microsoft 365 E5 | Security-heavy, compliance-heavy, or higher-risk organizations that need the top-tier Microsoft stack | Microsoft positions E5 as its premium enterprise offering with advanced security, compliance, analytics, and AI-readiness capabilities; E5 includes Entra ID P2, and users can get a 100 GB mailbox. (Microsoft) | Paying for E5 broadly when only a subset of users truly needs that level of capability | Best reserved for environments or user groups where the extra security, identity, and compliance value is real |
For government, defense, regulated, and nonprofit organizations, the licensing conversation can change because eligibility, compliance environment, and special pricing may apply.
Final thought
The best Microsoft license is not the most expensive one.
It is the one that fits the way your people actually work, gives the business the level of control it really needs, and does not create avoidable friction six months from now.
That is usually what Kosh is helping clients sort out.
FAQ
What is the main difference between Business Premium and E3?
Business Premium is built for organizations with up to 300 users and includes advanced identity and device-management features for SMBs. E3 is part of Microsoft’s enterprise tier and includes Exchange Online Plan 2 and Entra ID P1, making it a better fit for larger or more complex environments.
Does Microsoft 365 F3 include the desktop Outlook app?
No. Microsoft says F3 includes a 2 GB mailbox and Outlook on the web access rather than the full desktop Outlook experience.
How much mailbox space comes with these plans?
Microsoft documents 50 GB for Exchange Online Plan 1, 100 GB for Exchange Online Plan 2, and 2 GB for F3.
Does Business Premium include Conditional Access?
Business Premium includes Entra ID P1, and Conditional Access requires at least Entra ID P1.
How many users can Business Premium support?
Microsoft’s business plans, including Business Premium, are designed for organizations with up to 300 users.
Disclaimer
The information contained in this communication is intended for limited use for informational purposes only. It is not considered professional advice, and instead, is general information that may or may not apply to specific situations. Each case is unique and should be evaluated on its own by a professional qualified to provide advice specifically intended to protect your individual situation. Kosh is not liable for improper use of this information.