Microsoft Licensing
Microsoft 365 F3 vs E3, the right seat.
Frontline or knowledge worker decides this. Here is what F3 and E3 each include, and how putting deskless staff on the right tier cuts the bill.
Frontline or knowledge worker decides this. Here is what F3 and E3 each include, and how putting deskless staff on the right tier cuts the bill.
Microsoft 365 F3 and E3 serve different workers, and the saving comes from putting deskless and shift staff on F3 instead of paying full E3 prices for licenses they barely use.
This guide is for IT and procurement leaders with a mixed workforce. Read it with the F1 vs F3 frontline guide and the Microsoft Practice page before reclassifying seats.
The split is about the worker, not the company. F3 fits people who work in short bursts on shared or mobile devices. E3 fits people at a desk in Office all day.
E3 adds the installed desktop Office suite, a 50 GB mailbox, larger OneDrive storage, and a deeper compliance set. Microsoft lists the full split on its enterprise plans page.
The table makes the trade explicit. F3 trades desktop apps and storage for a price that is a fraction of E3.
F3 vs E3 at a glance
| Feature | F3 | E3 |
|---|---|---|
| Desktop Office | No | Yes |
| Mailbox size | 2 GB | 50 GB |
| Best fit | Frontline, shift | Knowledge workers |
| Relative cost | Low | Several times F3 |
Ask whether the person needs the desktop Office suite and a large mailbox to do the job. If not, F3 fits. If yes, E3 fits.
The saving is reclassification, not negotiation. Most over spend is genuine frontline staff sitting on E3 by default.
F3 is a frontline license for deskless and shift workers, with web and mobile Office and a 2 GB mailbox. E3 is a full knowledge worker license with the desktop Office suite and a 50 GB mailbox. F3 costs a fraction of E3.
Shift workers, retail staff, factory floor teams, and field staff who use Teams, email, and web apps but do not need the full desktop Office suite belong on F3. Office based knowledge workers belong on E3.
F3 omits the installed desktop Office apps, caps the mailbox at 2 GB, limits OneDrive storage, and excludes some compliance and analytics features. Those gaps are the trade for its low price.
Yes, and mixing them by role is the standard way to cut cost. Put frontline staff on F3 and knowledge workers on E3 in the same tenant with no technical barrier.
No. F1 is lighter still, with no Office web apps for creating documents and a smaller feature set. F3 adds web and mobile Office and a mailbox, which makes it the more common frontline choice.
Because F3 lists at a fraction of E3, moving genuinely frontline users off E3 onto F3 can cut their per seat cost by well over half. The saving scales with how many deskless staff are on the wrong tier.
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Most F3 savings sit in plain sight: deskless staff parked on E3 because nobody reclassified them.
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