Microsoft 365 licensing should be simple. Most companies just want to know three things: what they are paying for, who really needs which license, and whether there is an easy way to stop wasting money without disrupting day-to-day work.
If Microsoft 365 feels harder than it should, you are not alone. Licensing changes constantly. Features move between plans. Names change. Add-ons get bundled. Pricing evolves. At the same time, your business keeps moving. People join, roles change, people leave, and onboarding and offboarding processes do not always stay perfectly aligned. Even strong IT teams end up dealing with licensing drift.
We see this every week in Microsoft Subscription Reviews. Many IT leaders come to us for a simple reason: they want a second set of eyes. They believe things are mostly in order, and they want confirmation. That is a smart move. Microsoft licensing has become a specialized discipline, and most IT teams already have a full plate.
Here is the part that surprises even well-run organizations. Even when things look “fine,” we almost always find at least 10 percent in savings. In many cases, it is 10 to 35 percent. Sometimes the savings come from straightforward mistakes like double licensing or keeping licenses assigned after someone leaves. More often, it is just normal business reality catching up with a licensing model that is not built for simplicity.
This guide breaks down Microsoft 365 E1 vs E3 vs E5 in plain English. We will cover what employees actually use, the common traps that cause overspend, and a role-based approach to licensing that makes budgeting and management easier.
Quick Summary: E1 vs E3 vs E5
If you want the shortest possible answer, here it is.
• Microsoft 365 E1 is best for employees who primarily need email, Teams, and web-based Office apps.
• Microsoft 365 E3 is the best fit for most office employees who need desktop Office apps and a solid security baseline.
• Microsoft 365 E5 is best for security, compliance, and analytics-heavy roles where advanced features will be actively used and managed.
If you are unsure, most companies are a mix. The fastest savings usually comes from putting the right roles on E1 and avoiding over-assigning E5.
When Enterprise (E) Licensing Is Not the Best Fit
One part of Microsoft licensing that often gets skipped in conversations is whether enterprise licensing is actually the right starting point. While E1, E3, and E5 are powerful plans, they are not automatically the best choice for every organization.
Microsoft designed the E licenses with larger, more complex environments in mind. These plans assume a certain level of internal IT capacity, security governance, and device management maturity. When those structures are not fully in place, companies often end up paying for capabilities they rarely use.
For many small and midsize businesses, Microsoft’s Business licenses are a better fit, both financially and operationally.
Where Business Licenses Often Make More Sense
We frequently see organizations benefit from Business Basic, Business Standard, or Business Premium when they meet a few common criteria:
- Fewer than 300 users
- A lean internal IT team or outsourced IT support
- A need for strong productivity and collaboration tools without enterprise-level complexity
- Limited time or resources to manage advanced security and compliance configurations
Here’s how those licenses typically align in real environments.
Business Premium is the option we recommend most often for growing SMBs. It includes desktop apps along with strong security, device management, and conditional access features. For many companies, Business Premium delivers the protection they need without the cost or administrative overhead of E3 or E5.
Why This Matters
Licensing decisions should be based on fit, not just feature count.
We often see companies default to E3 because it feels like the safe choice. In reality, Business Premium would have supported their needs just as well, at a lower cost and with less complexity.
This is one of the most common optimization opportunities we uncover during subscription reviews. It’s also where many IT teams appreciate having a second set of eyes. Microsoft licensing evolves quickly, and what made sense a few years ago may not be the best option today. Choosing the right license isn’t about cutting corners. It’s about aligning your tools to how your organization actually works.
Why Licensing Drift Happens (And Why It Is Not a Personal Failure)
Licensing drift is normal. It does not mean someone “messed up,” and it also does not mean everything is perfect. It usually means the business grew, changed, and moved faster than the licensing model.
Common causes we see:
- Onboarding happens fast, so new hires get the default license “just to be safe.”
- People change roles, but licenses do not get reviewed at the same pace.
- Offboarding steps vary, so licenses stay assigned longer than intended.
- Admins add a security or collaboration add-on for a project, and it never gets removed.
- Multiple tools or bundles overlap, creating accidental double licensing.
- Microsoft introduces new packaging, which makes legacy decisions less optimal over time.
Most IT teams are trying to keep the business secure, supported, and productive. Licensing becomes the “quiet task” in the background until a budget review or renewal brings it to the surface.
What Employees Actually Use in Microsoft 365
Across industries, the pattern is remarkably consistent. Most employees use a core set of tools every day.
Most common daily usage:
- Outlook (email and calendar)
- Teams (chat, meetings, calling)
- Word, Excel, PowerPoint
- OneDrive and SharePoint (files and collaboration)
- Mobile apps for quick access
Less common usage (valuable, but not for everyone):
- Advanced eDiscovery and compliance tools
- Threat hunting and advanced security dashboards
- Advanced audit and identity governance features
- Power BI Pro at scale across the entire organization
That difference matters. E5 is powerful, but many organizations assign it broadly when only a smaller set of users truly needs it.
Microsoft 365 E1 Explained
E1 is built for communication and collaboration. It is often the most underused option, even though it fits a large portion of modern workforces.
E1 is a strong fit when employees:
- Mainly use Teams and email
- Do not need the desktop versions of Office apps
- Work on shared devices or primarily on mobile
- Have job roles that do not require heavy document creation
Common E1 role examples:
- Warehouse and shop floor employees
- Field service teams
- Frontline staff
- Seasonal or part-time employees
- Team members who mostly read information, communicate, and complete light tasks
Where E1 can disappoint:
If a role relies heavily on Excel models, complex documents, or offline work, E1 may feel limiting because desktop apps are not included.
Practical tip:
If your frontline teams are already successful with Teams and email, E1 is often the first place to look for savings.
Microsoft 365 E3 Explained
E3 is the “workhorse” license for most businesses. It includes the desktop Office apps plus a security baseline that fits most office roles.
E3 is a strong fit when employees:
- Need installed desktop apps (Office on PC or Mac)
- Create and edit documents frequently
- Need core security and management capabilities
- Work in roles where data protection matters (finance, HR, customer service)
Common E3 role examples:
- Accounting and finance staff
- HR and operations teams
- Customer service and sales teams
- Managers and executives
- Remote professionals who work primarily on a laptop or desktop
Why E3 is usually the default recommendation:
It is the safest “broad fit” option for office workers. The challenge is when E3 becomes the default for everyone, including roles that do not need it.
Microsoft 365 E5 Explained (And When It Is Truly Worth It)
E5 adds advanced security, compliance, and analytics capabilities. It can be an excellent fit, but it needs to be actively used to justify the cost.
E5 is often worth it when you have:
- Higher regulatory or compliance requirements
- A security team (internal or outsourced) that will use advanced tools
- A need for advanced eDiscovery, audit, and risk management
- Users who rely heavily on analytics, including Power BI Pro usage at scale
- Elevated cybersecurity risk and a mature security posture
Common E5 role examples:
- Security administrators and IT security roles
- Compliance and risk leadership
- IT administrators managing identity and security policies
- Specific executives or departments handling highly sensitive data
The most common mistake we see:
Assigning E5 broadly “for safety” without a plan for enabling, monitoring, and operationalizing the features.
A good rule of thumb:
If no one is responsible for the E5 security stack, it is unlikely you are getting full value from it.
A Role-Based Licensing Model That Works in Real Companies
One of the simplest ways to reduce overspend is to stop thinking about licenses as a per-person status symbol and start treating them like role-based equipment.
A practical approach:
- 1) Define 5 to 8 role groups in your organization
- 2) Assign a default license per group
- 3) Create a review step for promotions, role changes, and offboarding
- 4) Audit quarterly or twice per year
Example role groups:
- Frontline and operational roles: E1
- Standard office roles: E3
- IT and security roles: E5
- Leadership and sensitive roles: E3 or E5 depending on needs
- Contractors and short-term roles: E1 or limited access based on policy
This approach makes onboarding faster, budgeting simpler, and renewals less stressful.
The Most Common Licensing Mistakes We Find
Here are the issues that show up repeatedly, even in well-managed environments.
- 1) Double licensing
This happens when a user has overlapping licenses or add-ons that duplicate included features.
- 2) Not removing licenses after offboarding
Offboarding is often a checklist item, but license removal does not always happen immediately.
- 3) Defaulting everyone to the same plan
E3 or E5 becomes the default “safe choice,” even for roles that do not need it.
- 4) Paying for add-ons that are rarely used
An add-on gets turned on for a project, then quietly stays in the environment.
- 5) Over-assigning Power BI or advanced security
Analytics and security tools are valuable, but only when the right people are using them.
None of these are “gotcha” items. They are normal consequences of busy environments. The good news is they are fixable.
How to Decide: A Simple Checklist
If you are unsure where to start, use this checklist.
E1 is usually enough if the employee:
- Uses email and Teams
- Does not need desktop Office apps
- Works mostly in web apps or mobile
- Creates light documents, if any
E3 is usually the best fit if the employee:
- Needs desktop Office apps
- Works heavily in Excel, Word, or PowerPoint
- Handles financial or HR data
- Needs a strong baseline for security and device management
E5 is usually the best fit if the employee:
- Has a security or compliance role
- Needs advanced audit, eDiscovery, or risk features
- Will actively use advanced security tools
- Needs advanced analytics at scale
If you are still uncertain, you likely need a quick role review and a look at actual usage data.