Microsoft EA vs CSP: the break even sits near 2,400 stable seats.

Neither agreement is cheaper in general. In the deals we model, the EA wins above roughly 2,400 stable users and CSP wins below it. The deciding number is the share of your seats that sit idle or come and go.

Which is cheaper, the Microsoft EA or CSP?

The EA is cheaper for a large base of seats that stay assigned and in use all year, and CSP is cheaper for a smaller or more volatile base. In the deals we model, the break even sits near 2,400 stable users.

Above that count, the EA per seat rate beat CSP by 6 to 14 percent on committed volume. Below it, CSP came in 5 to 12 percent under the EA, because the buyer stopped paying for committed seats that sat idle. Treat 2,400 as a reference point, because it shifts with the share of users who come and go.

Does the EA still carry a volume discount after November 2025?

Not a published one for cloud services. Microsoft now charges one price for all online services across EA price Levels A to D. The change took effect on November 1, 2025, and applies at your next renewal or when you buy an online service not already on your price sheet.

The EA's rate advantage now comes from the discount you negotiate plus the three year price hold. On premises software and the U.S. Government and Education price lists were left out of the change. If your model still uses a Level B, C or D price sheet, rebuild it on current renewal pricing.

Why does comparing per seat rates pick the wrong agreement?

Because the rate prices the seat and ignores how the seat behaves. Most evaluations put two rates in two columns and declare a winner. In close to half the cases we modeled, that comparison chose the wrong agreement, a hit rate no better than a coin toss.

• The EA rate. It is only real for a seat that stays assigned and used for three years. Apply it to a project seat that goes idle in month eight and the same rate buys twenty eight months of nothing.
• The CSP rate. It looks expensive only next to a commitment you would have used in full. For a population that comes and goes, the CSP premium is the cheapest insurance you can buy.

The rate card hides the idle share, which is the number that carries the cost. That is why the median 12 percent gap between the two agreements was routinely smaller than the waste inside whichever one was chosen wrongly.

Why we disagree with moving every seat to CSP for flexibility

Mid sized buyers are often told to leave the EA and put every seat on CSP because CSP flexes. We think that is wrong for most companies, because nearly all of the flexibility sits in the monthly term. An annual CSP subscription can be cancelled for a prorated refund only in its first seven days.

A company that shifts 3,000 seats to annual CSP terms trades one three year commitment for yearly ones at a higher rate. It gains no room to shrink mid term. The better course is to put variable seats on monthly terms, keep stable seats on the lowest committed price you can negotiate, and price the two pools separately.

How do reductions, price locks, support and audits differ?

The two agreements differ most in what happens after you sign. Monthly CSP allows you to cut seats, while annual CSP and the EA do not allow mid term reductions. The EA fixes unit prices for three years, and CSP fixes them only for the term you bought.

When can you reduce seats?

• Monthly CSP term. You can lower the count at each monthly boundary, when the subscription renews. You pay a higher rate than the annual term for that right.
• Annual CSP term. Seats can be removed for a prorated refund in the first seven days. After that you can add seats during the term but cannot remove them until it ends.
• Three year CSP term. Where Microsoft offers one for the product, it holds the price for 36 months, and the count cannot be reduced after the first seven days.
• Enterprise Agreement. No mid term reductions. An Enterprise Subscription enrollment allows you to decrease subscription counts once a year at the anniversary, and Enterprise Products in a standard enrollment must be licensed organization wide.

What is the EA's three year price lock worth?

The EA holds your unit prices for the three years of the enrollment. CSP keeps a subscription's price constant only through its current term, so a monthly or annual subscription reprices at every renewal. The July 1, 2026 list increase shows what that exposure costs.

Microsoft 365 E3 went from $36 to $39 per user per month, and Microsoft 365 E5 now lists at $60. Microsoft states that customers on existing multiyear agreements keep their current pricing until their next renewal after July 1, 2026. An annual CSP subscription met the new price at its first renewal after that date.

How do support and audit exposure differ?

On the EA side, support means a separate, paid Unified Support contract with Microsoft. In CSP, the partner delivers support and funds it from its margin, so you pay for it even though the invoice shows no support line.

The EA also carries annual true up reporting, with the order due to Microsoft between 60 and 30 days before each anniversary, and more direct Microsoft audit exposure. CSP consumption is tracked by the partner with lower friction. Neither route is free of compliance risk, but the EA's reporting duty is heavier, as our true up guide explains.

How do you split seats between the EA and CSP?

Sort every seat by how it behaves before you price anything. Most enterprises have a stable core plus a group of users who come and go, and one agreement applied to both groups misprices one of them. Build the three pools below per SKU from twelve months of headcount and assignment data.

• Stable. Seats assigned and used year round. These go on the EA's committed price.
• Variable. Seats that rise and fall with projects, contractors and seasonal hiring. These go on monthly CSP.
• Not needed at the current edition. Users on a suite they do not use, such as an E3 holder whose work fits a frontline plan. Fix these first, because both agreements charge for them. Our reclamation guide covers how.

Worked example: 3,000 Microsoft 365 seats

Take 3,000 Microsoft 365 E3 seats: 2,200 stable year round and 800 that swing with projects and seasonal hiring, averaging 500 in use. For illustration only, assume an EA price of $35.10 per user per month, 10 percent under the $39 list. CSP annual is at list, and the monthly term costs 20 percent more at $46.80.

The split costs $56,160 a year less than all EA and $102,960 less than all CSP. All CSP overpays on the 2,200 stable seats at list or light margin. All EA locks the 800 variable seats for three years, which over the enrollment costs $168,480 more than the split.

How active does a variable seat need to be to belong on the EA?

At the example prices, a committed EA seat costs $421.20 a year and a monthly CSP seat costs $561.60 for a full year of use. The EA seat wins only if it is in use more than 75 percent of the year, about nine months. Rerun the test with your own quotes.

The same logic explains a pattern we see often. Once variable seats pass roughly a third of the total, the split's advantage over either single agreement is usually decisive. In the example they are about 27 percent of seats, and the split already wins.

Forcing one agreement onto both populations guarantees that one of them is mispriced, and the mispricing grows with the variable share.

Check the enrollment before you split

A standard Enterprise Enrollment requires Enterprise Products to be licensed organization wide, while Additional Products, including cloud services, can be added at any time during the term. Before you move a pool to CSP, confirm how your enrollment classifies the Microsoft 365 suite and defines qualified users. Then get Microsoft's confirmation of the split in writing.

How does the choice change with company size?

The break even shifts with scale, and so do the options Microsoft will offer you. The EA needs at least 500 users or devices for commercial customers, and Microsoft keeps steering smaller customers toward CSP and the Microsoft Customer Agreement. Azure consumption follows its own rules, covered in our Azure CSP versus EA comparison.

• Under 500 seats. A commercial buyer cannot sign an EA, so the question becomes the CSP term mix: annual for stable seats, monthly for the rest.
• 500 to 2,400 stable seats. CSP usually wins on total cost unless Microsoft offers an EA price well below list. Ask for that price in writing before you reject either option.
• Above 2,400 stable seats. The EA's committed price tends to win on the stable pool, and variable seats still belong on monthly CSP.
• Groups with many subsidiaries. The split often follows the org chart. Head office functions sit on the EA, while acquisitions and project units stay on CSP until their headcount settles.

What have our CSP versus EA comparisons shown from 2024 to 2026?

Across 30 to 45 modeled comparisons between 2024 and 2026, the same patterns held regardless of industry.

1. Comparing headline rates was the least reliable way to find the cheaper agreement, whatever the size of the buyer.
2. The split beat both single agreements wherever the variable share was material.
3. The reduction fine print surprised buyers who had bought CSP for a flexibility their term did not contain.
4. The buyers who got it right refused the one column comparison, split their seats by behavior, and let each pool buy the contract its behavior justified.

The wider decision, including the Microsoft Customer Agreement, sits in our guide to choosing between the EA, CSP and MCA. The full library is in the Microsoft hub.

What will Microsoft and the partner tell you, and how should you answer?

Expect each side to argue for the agreement it earns from. The lines below come up in most comparisons, and each has a factual reply.

• "Your price level gives you the volume discount." For online services, Levels A to D carry one price at renewals from November 1, 2025. Ask for the negotiated discount per SKU against current list, in writing.
• "With CSP you can scale down whenever you want." Ask which term the quote uses. If it is annual, the count is fixed after seven days, so ask for the monthly price on the variable pool as a separate line.
• "We can match EA pricing in CSP." A price held for one year does not match a three year hold. Ask for the price for the full term and a cap on the renewal price.
• "Splitting agreements costs you enterprise benefits." Ask them to name the benefit and the clause, then price it against the saving the split produces.

Terms to ask for in writing

• EA price hold on planned SKUs. Fix prices at signing for products you expect to add during the term, so a mid term addition does not arrive at the new list.
• Annual reduction right. Where the enrollment type allows it, secure the right to lower subscription counts at each anniversary for pools you expect to shrink.
• CSP renewal cap. A written limit on the price increase at each renewal, stated as a percentage or a fixed discount off list.
• Partner support scope. Response times and escalation paths written into the partner agreement, since that support is what the margin pays for.
• Usage reporting. Monthly assigned and active seat data from the partner, so you can move seats between pools on evidence.

What to do next

1. Twelve months before renewal. Pull twelve months of headcount and assignment data and split each SKU into stable, variable and not needed pools.
2. Clean up first. Remove or downgrade seats that are not used at their current edition, because every scenario pays for them.
3. Price three scenarios. Model all EA, all CSP and the split as totals over three years, not as rates.
4. Match the CSP term to the flexibility you need. Use monthly where reductions matter, and price that term rather than the annual one.
5. Add the hidden costs. Put the value of the price lock, Unified Support and true up reporting into each scenario before you compare.
6. Take the winner into the renewal as your proposal. Our Microsoft practice models it with you.
7. Revisit at every term boundary. The break even shifts with your variable share, and Microsoft keeps changing which agreements it offers.

Frequently asked questions