CSP vs Enterprise Agreement: which way should you buy Microsoft 365?
The short answer
For most organizations under roughly 2,400 seats, CSP through a partner is the better way to buy: the same Microsoft products, no seat minimum, terms you can actually flex — and the partner margin Microsoft builds into the price working for you as included services instead of staying in Redmond. An Enterprise Agreement still earns its keep at genuine enterprise scale: 500 seats just to sign, thousands to negotiate well, a three-year commitment, and real discounts only if you bring real leverage.
Choose CSP if…
- You have anywhere from 1 to a few thousand seats and want to pay for what you use
- Headcount moves — seasonal staff, contractors, growth you can’t predict three years out
- You’d rather get support, audits, and monitoring included than buy a separate support contract
- You want an expert on your side of the table when licensing questions come up
Choose an Enterprise Agreement if…
- You’re well past 2,400 seats and can negotiate meaningful discounts
- You carry on-premises Server/CAL licensing with Software Assurance in one vehicle
- Leadership mandates company-wide standardization on a fixed three-year platform
- You already pay for Microsoft Unified support and use it
What’s the difference between CSP and an Enterprise Agreement?
They’re not different products — they’re different ways to buy the same Microsoft 365 licenses. An Enterprise Agreementis Microsoft’s classic large-company contract: a minimum of 500 users or devices, a three-year commitment, annual billing, an annual true-up to add what you grew into, and pricing negotiated against volume levels. Support isn’t part of it — that’s a separate paid contract (Unified, formerly Premier).
CSP— the Cloud Solution Provider program — is how Microsoft sells through partners like us. No seat minimum, monthly or annual terms per subscription under NCE, seats added any day you need them, and one itemized invoice from the partner. The price is Microsoft’s public NCE list — the same list you’d pay buying direct. What differs is what rides along with it, which is the entire argument of this page.
How do the two compare side by side?
| CSP (through a partner) | Enterprise Agreement | |
|---|---|---|
| Seat minimum | None — one seat is fine | 500 users or devices to sign (and the floor keeps rising) |
| Commitment | Monthly or annual NCE terms, chosen per subscription | Three years, organization-wide |
| Price basis | Microsoft's public NCE list (ERP) — the same list direct or through any partner | Negotiated volume price levels; real discounts start at serious scale |
| Mid-term flexibility | Add seats any day; reduce at each term's renewal | Add via annual true-up; reductions generally wait for the anniversary or renewal |
| Billing | One itemized invoice from your partner, monthly or annual | Annual billing under the agreement with Microsoft |
| Included support | Funded by the partner margin: break/fix, security and tenant audits, monitoring, consulting hours | Effectively none — real support is a separate paid Unified/Premier contract |
| Who negotiates for you | Your partner — SKU mix, promos, right-sizing, renewal timing | You do, against Microsoft's licensing desk |
| Switching cost | Low — partner-to-partner transfers are routine, no penalty, tenant untouched | High — you're committed until the term ends |
| Best for | Roughly 1–2,400 seats; anyone who values flexibility and a working support relationship | 2,400+ seats with negotiating leverage, on-prem SA, standardization mandates |
The licenses themselves — features, tenant, admin center, compliance posture — are identical in both channels. Only the commercial wrapper changes.
Is CSP cheaper than an EA?
Honest answer: it depends on your size, and we’ll tell you where the line is. CSP sells at Microsoft’s public NCE list price — no partner can change that list, us included. A large EA is negotiated, and a genuinely large organization with 2,400+ seats and procurement leverage can and often does beat the public list through one. If that’s you, an EA deserves a serious look.
Below that scale, EA discounts run thin to nonexistent — and Microsoft has been raising the EA floor for years, steering mid-size agreements toward CSP and MCA at renewal. So for most companies the real comparison isn’t list price vs. negotiated price; it’s what comes back to you from the same spend. Buying through us, the roughly 20% margin Microsoft builds into the partner price becomes a monthly fund spent on your account — support, audits, monitoring, consulting — rather than a token discount. Model the fund vs. a discount with your own numbers — it’s the same math this page describes, live.
What do I give up by buying direct from Microsoft?
The price stays the same — that’s the part most people find hard to believe. Microsoft publishes one NCE list, and it’s the same whether you buy from microsoft.com or through a CSP partner. What you give up buying direct is everything the channel margin could have paid for: the margin simply stays with Microsoft, and you get a billing portal and a support queue.
Through IT Partner, that margin funds included services: break/fix support from real engineers, security audits, tenant configuration audits, monitoring, and consulting hours — prioritized to your needs while the fund lasts. That isn’t a rebate or a coupon; it’s our actual partner economics made visible. And if you’d rather take part of it as a straight discount instead, the calculator has a slider for exactly that.
When does an EA still make sense?
We’d rather be straight than sell you a switch you shouldn’t make. An EA is still the right vehicle when you’re well past 2,400 seats and can extract real negotiated discounts; when you carry on-premises Windows Server or SQL Server licensing with Software Assurance and want it in the same agreement; when leadership wants company-wide standardization locked for three years; or when you already pay for — and actually use — Microsoft Unified support. CSP covers cloud subscriptions superbly, but it doesn’t replicate an EA’s Server/CAL-with-SA bundling.
If none of those describe you, the EA’s remaining advantages are mostly inertia. Three-year price lock sounds appealing until headcount drops and you’re paying for seats nobody sits in until the anniversary.
Can I switch from an EA to CSP?
Yes — and increasingly, Microsoft would quietly prefer that mid-size customers did. The clean exit points are your EA anniversary and its expiration. Start about 90 days out: we map your EA SKUs to their NCE equivalents from the subscriptions catalog, price monthly against annual terms per role, and stage the CSP subscriptions so they activate the day the EA lapses. Your tenant, users, and data don’t move — the change is purely who you buy from and who answers when something breaks.
Frequently asked questions
What is the seat minimum for an Enterprise Agreement?
Microsoft's commercial Enterprise Agreement starts at 500 users or devices, and Microsoft has been raising the practical floor — many mid-size EAs are being steered toward CSP or MCA at renewal. CSP has no minimum at all: one seat works.
Is CSP more expensive than buying through an EA?
Per seat, CSP sells at Microsoft's public NCE list price — the same list you'd pay buying direct without an EA. A large EA with negotiated discounts can beat that list, which is exactly why EAs persist at 2,400+ seats. Below that scale the discounts are usually thin, and the CSP side of the ledger includes services an EA never will.
Can we move from an EA to CSP before the agreement ends?
The clean exit points are your EA anniversary and its expiration — mid-term exits are rare and rarely worth the fight. The right move is to start about 90 days before the date: we map your EA SKUs to their NCE equivalents, price monthly against annual terms, and have the CSP subscriptions ready to activate the day the EA lapses. Nothing about your tenant or data moves.
Do we keep our tenant and data when we switch from an EA to CSP?
Yes. The switch happens at the licensing and billing layer only — same tenant, same users, same data, no migration, no downtime. What changes is who you buy from and who is on your side afterward.
Does an Enterprise Agreement include support?
Not meaningful support. An EA covers licenses; hands-on help comes from a separate paid support contract — Microsoft Unified, formerly Premier — priced on top. In CSP, support is the partner's job: ours is funded out of the margin Microsoft already builds into the price, so it comes included rather than invoiced.
Does buying CSP through IT Partner lock us in?
No. The CSP program is explicitly designed for moving between partners — if we ever stop earning the relationship, you can transfer to another CSP, or back to buying direct, without penalty and without touching your tenant.
Same Microsoft price. Different side of the table.
Put your seat count and plan mix into the calculator and see what the partner margin buys as included services — or talk it through with the founder first.