Cost Optimisation Guide

How to Reduce Microsoft 365 Costs Without Cutting Corners

Most businesses aren't overpaying because Microsoft's pricing is unfair — they're overpaying because nobody has checked who has which licence since the day it was assigned. Here's where the waste actually hides, and how to remove it without taking anything away your team needs.

Unused Licences

Staff who left months ago, seasonal or contractor accounts nobody disabled, and spare licences bought "just in case" during a growth spurt that never used them.

Wrong Tier for the User

Frontline staff who only ever check email on their phone sitting on a premium desktop-app licence, or the reverse — power users under-licensed and quietly working around the gaps with personal tools.

Duplicate & Overlapping Tools

A separate video conferencing tool when Teams is already paid for, a third-party file-sync app running alongside SharePoint and OneDrive, or a bolt-on email security product duplicating protection you already own.

Microsoft 365 Tiers: Who Actually Needs What

The tier names sound similar, but the gaps between them are real. Buying the tier above what a role needs is the single most common source of Microsoft 365 overspend we find in Australian SMBs.

  Business Basic Business Standard Business Premium E3 E5
Best for Frontline or casual staff working in a browser or on mobile. Typical office staff who need desktop Word, Excel and Outlook installed. Anyone handling sensitive data — most SMBs settle here as their security baseline. Businesses over the 300-seat SMB cap, or needing enterprise compliance tools. Regulated industries (legal, finance, health) or heavy Power BI / advanced analytics users.
Desktop Office apps Web & mobile apps only Fully installed desktop apps Fully installed desktop apps Fully installed desktop apps Fully installed desktop apps
Device management & security Basic Defender protection Basic Defender protection Intune device management, Defender for Business, Conditional Access Entra ID P1, Intune, basic compliance & eDiscovery Everything in E3, plus advanced threat protection & insider risk
Seat cap 300 users 300 users 300 users No cap No cap

Every Business-tier plan is capped at 300 users — once you cross that line, or need enterprise-grade compliance features, E3 or E5 become the realistic option regardless of company size. Pricing moves regularly, so always confirm current rates before budgeting off any figure you've seen online.

How to Actually Find the Waste

A licence audit isn't a guess — it's a straightforward data-matching exercise once you know what to pull.

  • Pull the raw usage reports. The Microsoft 365 admin centre's active user and last-activity reports show exactly who's signed in, when, and which services (Exchange, Teams, OneDrive) they're actually touching — not just who has a licence assigned.
  • Cross-reference against your starters and leavers list. Match every active licence against current HR records. Any account still licensed for someone who's left is pure, immediate waste sitting on your monthly invoice.
  • Match tier to actual behaviour, not job title. Check whether a Premium or E-series user has ever opened a desktop Office app or touched the advanced security features they're paying for. Job titles lie; usage logs don't.
  • Look for features you're already paying for twice. Line up your paid third-party tools (security, file sync, video calling) against what your current Microsoft 365 tier already includes — duplicate spend is one of the easiest wins to find.
  • Check your commitment type against your renewal date. Annual commitment plans are cheaper per seat but lock in your headcount for 12 months; monthly-flex plans cost more per seat but let you resize immediately. Know which one you're on before you assume you can just remove a seat.

Quick-Win Cost Reduction Tactics

None of these require a platform migration or a big project — most can be actioned inside a single admin session.

  • Audit 60-90 days before renewal, not after. Right-sizing before your annual commitment locks in means you're paying for next year's actual headcount, not last year's.
  • Reclaim leaver licences immediately. Add licence removal to your offboarding checklist as a same-day step, not something that waits for a quarterly review.
  • Move shared and resource mailboxes off paid licences. Shared mailboxes, meeting room calendars and equipment bookings can run on free shared mailbox licences instead of a full paid seat.
  • Retire tools you're already paying for twice. If your current tier already includes Teams, Defender or SharePoint-based file sync, cancelling the overlapping third-party subscription is often the single biggest line-item saving available.
  • Match your commitment type to your headcount stability. Stable headcount favours the cheaper annual commitment; seasonal or fast-changing headcount is often cheaper overall on monthly-flex, even at a higher per-seat price.

Managed Provider vs DIY: When It's Worth Bringing In Help

Plenty of businesses can run this audit themselves. The question is really whether anyone has the time to do it properly, and keep doing it.

DIY Makes Sense When
  • You're under roughly 20 users with a simple, stable team structure.
  • Someone internally already owns IT admin part-time and has admin centre access.
  • You're comfortable setting a recurring calendar reminder to actually repeat the audit.
A Managed Provider Pays Off When
  • You're 20+ users and nobody's reviewed licensing since the day it was set up.
  • Security and compliance stakes are high enough that getting the tier wrong is a real risk, not just a cost issue.
  • You'd rather this be checked on a schedule automatically than rely on someone noticing.

Frequently Asked Questions

In the Microsoft 365 admin centre, the Active Users report and the per-product usage reports both show last activity date per user. Anyone with no sign-in activity in the last 30-60 days, or who no longer appears on your HR active staff list, is worth investigating first.

Generally yes, but check what the user actually relies on first — downgrading someone off a desktop Office licence will remove their installed Word or Excel app, and downgrading off Business Premium will remove Intune-managed security policies on their device. Test on a small batch before rolling changes out company-wide.

For most SMBs, yes. The jump adds Intune device management, Defender for Business and Conditional Access — the baseline most cyber insurance policies and compliance frameworks now expect. If you're handling any customer or financial data, the security gap is usually worth more than the price difference.

At 40 users, Business Premium almost always covers what you need — you're well under the 300-seat cap, and Premium already includes the core device management and security features most SMBs are actually after. E3/E5 tend to make sense once you exceed the seat cap or need specific enterprise compliance tooling Premium doesn't cover.

At minimum, once a year ahead of your renewal date. If your headcount changes often, a quarterly check keeps unused seats from piling up between renewals — and offboarding licence removal should happen the same day someone leaves, not on any schedule at all.

Want us to run this audit for you?

We'll review your current Microsoft 365 licensing, flag the waste, and recommend the right tier for every user — no sales pitch required.

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