The EA-Only Trap That's Draining Your Budget
Most large enterprises still run a pure Enterprise Agreement. Microsoft's sales team has structured the EA to feel like the natural home for a large organisation: three years of predictable pricing, volume discounts, and the comfort of a single contracted relationship. What Microsoft's team does not show you is the structural waste built into the model.
The average large EA includes 15–30% of licences that are never fully utilised. Seasonal workers, contractors, project teams that dissolved, and users who left the organisation mid-term all remain on the roster because the EA's annual true-up only ratchets upward — you can add seats, but reducing them before term end means paying anyway. Over a three-year cycle, a 500-seat overage at £40 per user per month runs to over £700,000 in pure wasted spend. For organisations running 5,000-plus seats, the numbers are proportionally worse.
Beyond waste, Microsoft's November 2025 changes to EA discount tiers have fundamentally altered the calculus. The tiered volume discounts that large organisations relied on — approximately 6% at Level B, 9% at Level C, and up to 12% at Level D — have been eliminated. All customers now pay a flat per-seat rate regardless of volume. Organisations that previously benefited from upper-tier EA discounts should expect effective price increases of up to 12% at renewal, even before stacked SKU increases are applied. Our Microsoft Knowledge Hub covers the full landscape of these changes and their renewal implications.
The response from procurement-savvy enterprises has been decisive: use CSP for everything that does not require long-term commitment, and negotiate the EA aggressively for the core that does. This is the hybrid model, and it works.
How the EA–CSP Hybrid Model Actually Works
The hybrid model is conceptually simple but requires deliberate design to execute well. The EA covers your stable, predictable, long-term licence demand — your core workforce, your standard Microsoft 365 seats, your server infrastructure with Software Assurance. These workloads do not vary month to month and justify the three-year commitment in exchange for whatever unit price advantage the EA still offers.
CSP covers everything else. Microsoft 365 or Dynamics 365 seats for project teams that will exist for six months. Licences for a subsidiary you are integrating. Overflow seats during a hiring surge. Developer environments that spin up for a sprint and wind down when the project ships. With CSP, you provision what you need and deprovision when you are done — billing follows usage, not forecast.
The Microsoft Customer Agreement that underpins CSP is now standard across most product lines. CSP partners can offer annual commitment terms on top of the month-to-month base, narrowing the price gap with EA for customers who want both stability and the right to adjust. Our Microsoft EA vs CSP Decision Assessment helps quantify which model delivers the best total cost outcome for your specific environment.
Which Microsoft Licences Should Move to CSP?
Use our EA vs MPSA vs CSP Decision Assessment to model your specific workload mix and identify where a hybrid approach would reduce total spend. Get a tailored recommendation in under 15 minutes.
Run the Assessment →Which Workloads Belong in EA vs CSP
The practical division between EA and CSP tracks how predictable and stable each workload is. EA suits permanent headcount on standard productivity suites, server licences with Software Assurance needs, and workloads where three years of price certainty genuinely reduces planning overhead. These are the licences where the EA's remaining price advantages — now diminished by tier collapse — still justify the commitment.
CSP is the right model for licences tied to contractors or fixed-term employees, seasonal or cyclical workloads, pilot programmes and proofs-of-concept, newly acquired entities during integration, and any workload where business conditions might change within the next 12 months. Critically, on-premises licences that require Software Assurance equivalents must be handled carefully — CSP does not include SA by default, and purchasing SA rights separately can erode the cost advantage. Any hybrid strategy needs an audit of SA dependencies before moving workloads to CSP.
Microsoft 365 E3 and E5, Power BI, and Teams Phone are the most common products moved to a hybrid structure. Azure consumption is typically handled separately under a MACC or Azure commitment deal, not under the EA per-seat structure, and sits outside the EA–CSP decision for most enterprises.
What Microsoft's 2025 Changes Mean for Your Hybrid Strategy
Microsoft's licensing policy changes in 2025 and 2026 have strengthened the case for hybrid structuring across the board. The elimination of EA volume discount tiers in November 2025 means that the primary remaining EA advantage for most organisations is Software Assurance coverage and contractual predictability — not unit pricing. CSP pricing, which was previously somewhat higher per seat for cloud services, is now effectively at parity with EA for most Microsoft 365 workloads.
Compounding this, Microsoft has signalled further price adjustments for Microsoft 365 suites effective July 1, 2026. Organisations with EA renewals falling in Q3 or Q4 2026 need to model whether locking in now before those increases land, or renegotiating from a hybrid position, delivers better three-year economics. Our Microsoft EA Renewal Playbook includes the exact scenarios to model for 2025–2026 renewal cycles, including how hybrid structuring affects your negotiated position.
For enterprises with fewer than 2,400 seats, the hybrid question is even more urgent. Microsoft has effectively stopped prioritising EA eligibility below this threshold in new agreements, directing smaller organisations toward CSP or the Microsoft Customer Agreement for enterprise (MCA-E). If your EA is up for renewal and you are below the 2,400-seat threshold, you may not be offered a new EA at all. The hybrid approach — or a full CSP transition — becomes the practical answer, not a choice.
Redress Compliance: Independent Microsoft Advisory
We have no commercial relationship with Microsoft. Our only objective is to reduce your Microsoft costs. Redress advisors have structured hybrid EA–CSP programmes for enterprises across financial services, manufacturing, and the public sector — consistently delivering 15–25% savings on total Microsoft spend over the renewal cycle.
Explore Microsoft Advisory →Using CSP as Negotiation Leverage for Your EA
The most underused aspect of the hybrid strategy is its negotiating power. Microsoft's sales organisation operates on a quarterly close cadence and measures its performance on committed annual contract value. An EA renewal is valuable to them because it guarantees revenue and reduces churn risk. The moment you credibly demonstrate that you are prepared to move a portion of your spend to CSP — or have already begun transitioning project licences — Microsoft's negotiating posture changes.
To make this leverage concrete, you need comparative CSP pricing from a partner before you enter EA renewal discussions. Run a parallel scenario showing what your total three-year cost looks like if you keep 60% of seats in the EA and move 40% to CSP on annual CSP terms. Present this as a genuine alternative, not a bluff. Enterprises that have done this work report Microsoft responding with additional concessions: extended SA coverage, bundled professional services credits, or exceptional pricing on specific SKUs.
The audit risk dimension also matters. Under a pure EA, Microsoft's audit rights are governed by your EA terms. Under a hybrid model, CSP licences are governed by the Microsoft Customer Agreement, which has different audit provisions. Ensuring your hybrid structure is properly documented and that your CSP partner can provide clear licence evidence reduces audit exposure on both channels. To book a confidential call with our Microsoft advisory team and get a specific negotiation roadmap for your renewal, reach out through our engagement page.
The organisations paying the least for Microsoft are not the ones with the biggest EAs. They are the ones that have taken the time to understand how much of their Microsoft estate is genuinely EA-appropriate, built a credible CSP alternative, and used that preparation as the foundation for a harder negotiation. That is exactly the work Redress does, independently, for enterprises across every major sector. Explore the full range of Microsoft cost reduction strategies through our Microsoft Knowledge Hub, or review our case studies to see what comparable organisations have achieved.