Microsoft 365 Licensing: What IT Leaders Overlook That Costs Them

Microsoft 365 licensing looks simple until you audit it. A few SKUs. Per-user pricing. Monthly billing. What’s to manage?

What’s to manage is a software category that has quietly grown into one of the largest line items in most IT budgets — and one of the least actively optimized. Organizations that haven’t conducted a proper licensing review in the last 12 months are typically overspending by 20-40% through a combination of unused licenses, wrong-tier assignments, stacked add-ons that never got activated, and commitment structures that locked in higher pricing than necessary.

The July 2026 Microsoft 365 price adjustment is a forcing function. Renewals are being quoted at higher rates. CFOs are asking why. IT leaders who can show a right-sized environment going into the renewal conversation negotiate from a different position than those who can’t.

Here’s what most IT leaders overlook in their M365 licensing, and how to audit each one before the next renewal quote lands.

Why M365 Licensing Drifts Without Anyone Noticing

Unlike most software categories, Microsoft 365 licensing is designed for continuous change. New users get added when someone joins. Former users don’t always get removed. SKU decisions made two years ago quietly remain in force as the company and the available tiers evolve around them. Add-ons get purchased for specific projects and persist long after the project ends.

None of this is anyone’s fault in particular. It’s the natural drift of any subscription that bills automatically based on user count. The problem is that the drift is always in one direction: upward. Nobody adds usage that isn’t needed. But unneeded usage accumulates.

The result, at most mid-sized organizations, is an M365 environment with:

• Licenses still assigned to former employees or contractors
• Business Standard licenses for users whose actual needs would be served by Business Basic, or vice versa
• Premium SKUs purchased for a handful of users but rolled out more broadly because “we’re already paying for it”
• Add-ons like Power BI Pro, Teams Phone, or advanced security features that were purchased but never configured or adopted
• NCE commitments from a past renewal that reduce flexibility without delivering the discount they were meant to secure

The five specific patterns below are where we see the most recoverable waste.

Five Things IT Leaders Overlook

1. Inactive Users Still Generating Monthly Charges

The most common and largest source of M365 waste is licenses assigned to users who aren’t actively using them. Former employees whose accounts weren’t offboarded cleanly. Contractors whose project ended but whose access wasn’t revoked. Dormant accounts created for integration or testing that were forgotten.

The fix requires visibility most organizations don’t actively maintain: a current report of license assignments cross-referenced with last login, last mail send, last Teams activity. Any license assigned to a user with no activity in the last 60-90 days deserves review. Most will come back as removable.

At typical Business Standard or E3 pricing, each inactive license is approximately $150-250 per year of recoverable spend. Fifty inactive licenses is a meaningful number.

2. Wrong-Tier Assignments

Microsoft 365 SKUs were designed for different user profiles. Business Basic works well for users who primarily need email, Teams, and web Office. Business Standard adds desktop Office applications. Business Premium adds advanced security and device management. E3 and E5 add enterprise-grade compliance, analytics, and security — at significantly higher prices.

Two patterns recur:

• Over-licensing: A company standardizes on a premium tier because “some users need it” and applies it org-wide. Most users would be adequately served by a lower tier.
• Under-licensing: A company standardizes on Business Basic to minimize cost, and then layers on individual add-ons for users who need desktop Office, extra storage, or specific features — ending up paying more than Business Standard would have cost.

The fix is a usage-based tier review: group users by actual feature usage, map to appropriate SKUs, and accept that the answer is typically not “everyone gets the same SKU.”

3. Add-Ons That Were Purchased and Forgotten

Microsoft 365 has dozens of add-on products, each priced per user per month. Teams Phone, Audio Conferencing, Power BI Pro, Microsoft 365 Copilot, Advanced Threat Protection, Azure AD Premium, eDiscovery features.

The pattern we see repeatedly: a specific project or executive request triggers an add-on purchase. It gets assigned to a subset of users. Nobody tracks whether adoption actually happened. A year later, the add-on is still active, still billing, and often still assigned to users who never used it.

Audit each add-on subscription: who is it assigned to, what’s the actual usage, is it still needed. Expect to find at least one add-on in most environments that should be cancelled or reassigned.

4. Copilot and the Stacking Cost Trap

Microsoft 365 Copilot is the most prominent recent example of a pattern that deserves explicit discussion. Copilot requires a qualifying base license (typically E3 or higher for enterprise, or a Business Standard/Premium for SMB). Copilot itself is an additional per-user monthly fee. Organizations that want to deploy Copilot to their executive team frequently discover mid-procurement that their current base licensing isn’t qualifying, requiring an upgrade to the base tier plus the Copilot fee.

The total landed cost per Copilot seat is often significantly higher than the headline Copilot price. Organizations should model the full stack cost — base license tier, Copilot add-on, and any related security or compliance add-ons that deployment requires — before committing to a Copilot rollout scale.

5. NCE Commitment Structures Locking in Past Decisions

Microsoft’s New Commerce Experience (NCE) introduced commitment-based pricing: annual and three-year commitments with meaningful discounts versus month-to-month pricing. The trade-off is reduced flexibility — adjustments mid-term are constrained, and the total commitment is enforceable.

Organizations that signed three-year NCE commitments at past renewals often find themselves locked into seat counts or tiers that no longer match their needs. The discount they secured at signing is real, but it was calculated against the needs of that moment, not the current reality.

Before the next renewal, evaluate:

• What commitment structure makes sense given your business’s actual growth and change rate
• Whether the NCE discount still represents net value versus the flexibility premium of annual or month-to-month terms
• Which seats should be on commitments versus kept flexible for known-volatile teams

The right answer isn’t always the deepest discount. Match the commitment structure to how your business actually operates.

The Audit Workflow That Actually Works

A meaningful M365 licensing audit produces specific, actionable findings — not a 40-page report that sits on a shelf. The workflow that produces useful outcomes:

Audit Step	What You’re Looking For	Typical Recovery
1. License Inventory	All active subscriptions, assigned seats, and per-user SKU assignments	Foundational visibility — most orgs don’t have this
2. Usage Correlation	Active use by user (last login, Teams activity, mail activity, app usage)	Inactive license recovery: typically 5-15% of total seats
3. Tier Appropriateness	Users on premium tiers with basic usage patterns (or vice versa)	Right-sizing savings: typically 8-20% of eligible users
4. Add-On Audit	Add-on subscriptions with low or zero adoption	Cancellation or reassignment opportunities
5. Commitment Review	Current NCE commitments vs. business change rate and flexibility needs	Structural improvements at renewal, not necessarily this cycle
6. Audit Trail	Documentation that supports an actual Microsoft license audit	Audit-readiness that avoids retroactive charges

This isn’t a one-time exercise. The organizations that maintain optimized licensing run this workflow quarterly, ideally as part of a broader cost optimization practice that also covers security gaps in the M365 environment — the security review and the licensing review share data sources and benefit from being run together.

What the July 2026 Price Adjustment Actually Means

Microsoft announced pricing changes taking effect July 2026 that affect most Business and Enterprise SKUs. The specifics vary by tier and region, but the practical implication is consistent: renewals quoted after July will be higher than renewals quoted before.

Two practical responses:

• For organizations renewing before July: Evaluate whether locking in current pricing via an NCE commitment makes sense for the portion of your license estate that’s stable. Keep flexibility for the volatile portion.
• For organizations renewing after July: The audit work becomes more valuable. Entering a renewal conversation with a right-sized environment means paying the higher rates on fewer seats.

Either way, the audit work is what produces leverage. A right-sized environment negotiates better than an oversized one.

When to Bring in External Help

Most mid-sized IT teams can execute the basic parts of an M365 audit internally. The license inventory, the usage correlation, the obvious inactive-user cleanup — this is tooling and time, not specialized skill.

Where external help adds value:

• Tier-appropriateness analysis at scale across hundreds of users, especially when behavioral data is distributed across multiple tools
• Commitment structure negotiation, where experience with Microsoft’s actual concession patterns is worth the fee
• Audit-readiness reviews where the question is whether the current environment would survive a Microsoft license compliance audit
• Copilot and AI licensing evaluations where the stacking-cost analysis benefits from recent comparables

A partner with experience across adjacent domains — security, managed services, IT strategy — typically produces better audit outcomes than a licensing specialist alone, because the licensing questions rarely exist in isolation from the broader IT environment.

Key Takeaways

• M365 licensing drifts upward without active management. The default state of every environment is modest overspend.
• Inactive users and wrong-tier assignments are the largest recoverable categories. Most audits recover 10-25% on these alone.
• Add-ons deserve individual review. Each one was purchased for a reason; verify the reason still applies.
• Copilot is not a single line item. Model the full stack cost — base tier, Copilot fee, and required supporting licenses.
• Match NCE commitments to actual business volatility. The deepest discount is not always the best structure.
• Audit before renewal, not during. Leverage comes from having a right-sized environment when negotiations begin.

The July 2026 price adjustment will raise costs on every environment that hasn’t been optimized. Organizations that treat this as a forcing function to run a proper audit will exit the renewal with reduced total spend even against the higher rates. Organizations that don’t will simply pay more for the same waste they had before.