Quantify the shelfware in your Microsoft 365 estate, model E3 and E5 right sizing scenarios, and walk into your Enterprise Agreement renewal with the same numbers Microsoft's licensing team is already running. Built by buyer side advisors with twenty plus years of Microsoft contract experience.
Microsoft 365 has become the single largest software line item for most enterprises. A 10,000 seat E5 estate now represents roughly $7 million per year in list spend, and Microsoft's account teams have grown adept at preserving that line item across every renewal. The most common pattern we observe in 2026 is an enterprise that licensed every employee at E5 in 2020 to take advantage of advanced security features, then never returned to right size after the workforce changed, after Defender for Endpoint became table stakes, after Power BI Pro stopped being part of E5, and after Copilot for Microsoft 365 emerged as a separate add on. The result is a stack of overlapping entitlements where individual users pay twice for capabilities they only need once.
The Microsoft 365 License Optimizer on this page reproduces the analysis our advisors run in the first ninety minutes of every Microsoft engagement. It accepts your seat counts by SKU, the security and analytics add ons you have separately, and a small set of usage and renewal questions. It returns three numbers: the size of the shelfware in your current estate, the annual saving available from a defensible right sizing exercise, and a renewal risk score that flags how exposed you are to a forced uplift at your next Enterprise Agreement true up or transition to a Microsoft Customer Agreement for Enterprise.
The tool is designed for IT procurement leaders, software asset managers, CIOs, and finance partners at organizations of any size with a Microsoft 365 estate of more than five hundred seats. Below five hundred seats the right sizing playbook is different and the calculator's discount logic is calibrated for larger commitments. If you sit between five hundred and five thousand seats, the calculator works, but the negotiation tactics shift toward Microsoft's Cloud Solution Provider channel and the levers move accordingly. The recommendation block flags this when relevant.
The Microsoft 365 stack is a bundle of bundles. E3 includes Office, Exchange, SharePoint, Teams, Intune, and a baseline of Azure Active Directory features. E5 adds advanced security through Microsoft Defender, advanced compliance through Purview, advanced analytics through Power BI Pro, and advanced telephony through Phone System and Audio Conferencing. Every one of those add ons is also sold as a standalone SKU. Customers who licensed E5 to obtain Defender for Endpoint then later bought Defender for Endpoint Plan 2 standalone for unmanaged devices end up paying twice. Customers who licensed E5 for Power BI Pro then later bought Power BI Premium per user are paying twice. Customers who licensed E5 for Teams Phone then later bought Operator Connect or Direct Routing carrier services without retiring the E5 telephony entitlement are paying twice.
The second source of shelfware is workforce mix. A frontline worker on an E5 license uses a fraction of what an information worker uses, but Microsoft's standard renewal proposal assumes a single SKU across the estate. The F1 and F3 frontline SKUs exist precisely for this scenario, and most enterprises have not deployed them at the scale their headcount profile would justify. A typical retailer with 60 percent frontline workers on E5 is paying roughly 4 to 5 times the necessary rate per frontline seat. A typical healthcare provider with 40 percent clinical frontline workers on E3 is paying roughly 3 times the necessary rate per clinical frontline seat.
The third source of shelfware is feature drift. Microsoft moves features between SKUs at every major product cycle. Power BI Pro left E5 in 2024. Copilot for Microsoft 365 became a separate add on at $30 per user per month in 2024 and was repriced again in 2025. Microsoft 365 Apps for Enterprise was repackaged as a separate SKU. The sustained effect is that an E5 license you bought in 2021 entitles you to a different feature set than the same SKU bought in 2026. Customers who set up their renewal once and never revisited the bundle composition are paying for entitlements that are no longer there, or worse, for entitlements they replaced with a separate purchase.
Read the Microsoft 365 licensing guide for a full breakdown of the SKU stack and the feature movements that have happened since 2023, and review the Microsoft Enterprise Agreement renewal guide for the negotiation tactics that protect the savings the optimizer surfaces. If you are early in renewal preparation, the Microsoft license discovery checklist will help you assemble the data the optimizer needs to produce a precise estimate.
The optimizer is a triage tool. It is not a substitute for a usage data extract from the Microsoft 365 admin center, a SKU by SKU contract review, or a fully modeled negotiation. The savings logic uses Microsoft's published list pricing as of the 2026 calendar year and applies a discount band derived from outcomes we have seen across more than eighty Microsoft Enterprise Agreement renewals. The shelfware logic combines workforce mix benchmarks with the usage signals you provide. The risk score weights renewal timing, audit history, contract type, true up exposure, and Copilot pressure against a calibrated rubric. Numbers in the result panel are estimates expressed in US dollars and are intended to support a budget conversation, not to settle one.
If your organization is already in receipt of a Microsoft Software Asset Management engagement letter, a Microsoft Verified Self Assessment request, or a renewal proposal that includes an unexplained uplift on the prior term, stop here and book a consultation. The window to push back on Microsoft's framing closes early in the renewal cycle and the levers shrink as the renewal date approaches. Our Microsoft Enterprise Agreement renewal service exists for exactly that scenario.
The shelfware calculation has three layers. Layer one is the SKU duplication layer. The calculator inspects whether you license Defender for Endpoint, Defender for Office 365, Power BI Pro, Teams Phone, or Intune both as part of an E5 bundle and as a standalone add on. Each duplicate is removed from the right sized scenario. Layer two is the workforce mix layer. The calculator estimates how many of your seats fit a frontline profile, how many fit an information worker profile, and how many fit a developer or technical specialist profile. Each profile is then matched to an appropriate SKU in the right sized scenario, with F3 for the bulk of the frontline workforce, E3 for the majority of information workers, and E5 reserved for executives, security teams, and roles with a clear E5 only requirement. Layer three is the usage layer. The calculator inspects your reported active user counts and adjusts the right sized scenario downward where active usage does not justify the licensed entitlement.
The negotiated savings logic applies a discount band on the right sized scenario. Microsoft Enterprise Agreement discounts on Microsoft 365 are normally between 8 and 15 percent on the headline list rate, with deeper discounts available on multi year prepay, on Copilot bundling, and on transitions from EA to a Microsoft Customer Agreement. The calculator returns the midpoint and explains the levers that move it. The risk score weights the renewal cycle position, the audit history, the contract type, the true up exposure, the workforce mix gap, and the Copilot pressure into a single 0 to 100 number that bands into green, amber, or red.
The recommendation block translates the band into specific actions. Green indicates that you have a credible position and a clear path to a defensible cost. Amber indicates that there is meaningful exposure that warrants targeted action before any conversation with Microsoft. Red indicates that you are at high probability of an audit or renewal escalation in the next 12 months and should treat the situation as time critical. Each recommendation lists vendors to engage, documents to assemble, and contract clauses to renegotiate.
Procurement leaders responsible for Microsoft renewals use the optimizer to size their savings target before walking into a budget review. Software asset managers use it to model the impact of a workforce mix correction before pushing a recommendation. CIOs use it to validate the gap between their current Microsoft 365 line item and a fully optimized estate. Finance partners use it to test the case for a multi year EA prepay against a transition to MCA-E. IT directors use it as a starting point for a deeper usage analytics exercise.
The optimizer is also relevant for organizations preparing to add Copilot for Microsoft 365 at scale. The Copilot conversation only works in your favor if your underlying E3 or E5 estate is right sized first. Adding Copilot at $30 per user per month to a license you should not have been carrying turns a $360 per year shelfware item into a $720 per year shelfware item. The optimizer flags Copilot pressure separately and recommends sequencing the right sizing exercise before any Copilot commitment. Read the Microsoft Copilot licensing guide for a full treatment of the Copilot bundle question.
For organizations with a complex mix of frontline and information workers, the optimizer's output is most useful when paired with a usage extract from the Microsoft 365 admin center. The active user counts in that extract feed directly into the layer three usage adjustment. Without that data, the optimizer falls back on workforce mix benchmarks, which produce a credible estimate but a wider band on the savings number. The recommendation block flags this and points to the data extract steps you can run yourself in the next thirty minutes.
Complete the 16 questions below. Your inputs are submitted to Redress Compliance for the optional consultation, but the calculation is run in your browser and the result is shown immediately. Nothing about your environment is published or shared with Microsoft.
All fields required. Calculation is instant. Estimate is in US dollars per year.
Our 56 page playbook walks through the eight decision gates every enterprise faces at Microsoft Enterprise Agreement renewal, the conditions under which a transition to MCA-E makes sense, and the levers Microsoft uses to defend its EA price floor. Used by procurement teams at more than 120 enterprises in 2025.
Download the playbookBring your optimizer output. We will pressure test your numbers, flag the SKU duplications Microsoft's account team will not surface, and outline a defensible path to a right sized renewal. No sales pitch. No vendor in the room.
