The numbers first, because they are the whole story. In FY26 a Cloud Solution Provider indirect reseller earned a flat Core incentive of 3.75% on every Microsoft 365 subscription it billed and 4.0% on every Dynamics 365 subscription, whether the account grew, shrank, or sat still. Effective July 1, 2026, that Core incentive is gone. In its place the Growth Accelerator rose from 7.5% to 12.5%, but it pays only on year-over-year growth in Microsoft’s strategic product tiers. The Tier 1 strategic accelerator on billed revenue (Business Premium, E3) fell from 4% to a flat 2.5%; Tier 2 (E5, Copilot) held at 7%. Azure kept its 3% consumption rate and replaced a single 7.5% growth rate with a tiered 7% / 10% / 12% ladder, the top rung reserved for databases and Fabric, the middle for Foundry, GitHub, Sentinel and Copilot Studio.
Then came October. On October 1, 2026, growth margins went live for CSP distributors and direct-bill partners: a discount earned transaction by transaction for new-to-offer sales, seat expansion and adoption of selected AI workloads, validated through an eligibility API that opened on September 23. On September 30 the Microsoft 365 E5, E7 and Copilot promotions ended “with the transition to growth margins.” A Copilot Cowork activation bonus launched September 1. And the Change of Channel Partner rule now means a partner who wins an account from a competitor earns incentives on none of the existing revenue for twelve months, only on what it adds.
The arithmetic on a $2 million book. Take an indirect reseller with $2 million of annual Microsoft 365 billings, all in Tier 1 products, and model only the published US rate card, nothing else. Flat book: FY26 paid $155,000 (Core 3.75% plus the 4% strategic accelerator); FY27 pays $50,000. That is a 68% cut for standing still. Grow the book 10%: FY26 $185,500 against FY27 $80,000. Grow it 20%: $216,000 against $110,000. The richer growth rate never catches the lost base, because 12.5% of a $400,000 delta is $50,000 and 3.75% of the whole $2 million was $75,000 before the Tier 1 cut is counted.
Move the same book into Tier 2 products, E5 and Copilot, and the shape softens but does not flip: flat, $215,000 becomes $140,000, a 35% cut; at 20% growth, $288,000 becomes $218,000. Run the model to its limit and there is no growth rate under 200% at which the FY27 schedule pays what the FY26 schedule paid. On the rate card alone, every partner lost money. The partners who lost least are the ones selling the AI SKUs and growing fastest.
Two honest caveats on that model, because the number is only as good as its edges. First, it excludes the reseller margin from the distributor, which does not change and remains the larger line for most partners; the incentive is a rebate layered on top of it. Second, it excludes everything Microsoft launched to replace the Core money: growth margins, the Cowork activation bonus, Frontier Accelerate. Those programs are real. They are also conditional. Each pays for a specific motion a partner must perform, with eligible SKUs, minimum seat counts and earning caps. The flat 3.75% paid for existing.
Why this is bigger than one vendor. Microsoft is not inventing a trend; it is the largest channel in software confirming one. DigitalRoute surveyed 631 executives across six markets in April and May 2026: 83.4% are exploring usage or outcome-based pricing, 49.1% are already live or optimising usage-metered pricing, 32.2% run hybrid subscription-plus-usage, and 24.6% have outcome-based pricing in place. The same survey found 67% manually fix more than 5% of their usage invoices before sending them, 75.4% see customer disputes on usage charges at least occasionally, and only 21.7% rate their billing and order-to-cash stack as very ready.
Hold those two facts together. A partner paid on a vendor’s revenue is paid on a number the vendor increasingly cannot bill cleanly. Microsoft’s own September notes describe a “continued shift toward consumption,” a flex spend plan now in the CSP sandbox as the construct for “several other consumption products in the future,” and a new Copilot commercial model in which user subscriptions cover everyday use “while usage-based billing gives customers flexibility to access advanced capabilities.” When the base is a meter and the payout is a rate on the growth of that meter, the partner’s income is a second derivative. It cannot be forecast from the contract. It can only be observed after the invoice, and a quarter of the time the invoice is in dispute.
The structure that does not need a July rewrite. Compare the alternative Issue No. 1 ran the math on: a 50% lifetime revenue share. It is indifferent to the seat-versus-usage question, because it is a share of whatever the customer actually pays, not a rebate schedule the vendor publishes each fiscal year. It pays on the book and on the growth at the same rate, because growth is simply more of the book. It carries no change-of-partner clock, no strategic tier list, no eligibility API. A $500-a-month account held for two years pays the partner $6,000 under a lifetime half-share; the same account under a typical 20%-for-twelve-months referral tier pays $1,200. Five times the money, and none of it depends on which products the vendor decided to call strategic that year.
The market benchmark for what partners are actually offered sits far below that. Across PartnerStack’s top 25 vendors in 2025, the best-performing commission offers were 20%, 25% and 30%; IT infrastructure vendors paid 30 to 35%. The same report put the network at $2.7 billion in all-time GMV after a 52% jump in transaction volume, with paid customer conversions up 112% and mid-market and enterprise accounts now 78% of volume. Partners are delivering buyers who pay. The question a lifetime share answers is how long the partner keeps getting paid for that.
The discipline it requires is the part vendors skip. A 50% share for life is only survivable with a quality gate on who gets it, because an uncapped liability attached to a partner who sends churn is a slow leak. That is why Issues 1 and 3 argued the gate is the product, and why the North Star model runs entry through an alignment interview instead of an open form.
The counterargument, and it is strong. Microsoft’s own October 1 note says the total partner investment commitment is unchanged; what changed is how it is targeted. Read generously, that is not a cut but a reallocation from partners who collected a rebate on renewals to partners who create net-new value, and the indirect reseller’s 12.5% growth rate is the richest in the channel, 2.5 points above direct bill. The old Core rebate had a real cost: it funded customer-swapping on price, which is exactly what the twelve-month change-of-partner rule exists to stop. A vendor that pays for growth gets growth. SoftwareOne’s channel director called it what it is: a filter, applied to roughly 500,000 partners.
The data has edges too. DigitalRoute sells usage-billing software and PartnerStack sells partner-management software; both surveys describe markets their authors profit from. And a lifetime revenue share is expensive for the vendor in a way a rebate schedule never is. It only closes at high gross margin, on a product with real retention, with the partner roster policed. For a vendor with thin margins or weak retention, Microsoft’s structure is the rational one, and that is most vendors.
The decision framework. If any part of your income is a vendor’s incentive schedule, three questions settle the next two quarters. First: what share of your partner income is paid on the book versus the delta, today, after July 1? If you have not re-run the number since the Core rebate ended, your FY27 forecast is wrong by roughly the figures above. Second: for each vendor you resell, is the base you are paid on a subscription or a meter, and who audits the meter? Where the answer is a meter and the auditor is the vendor, you are carrying their billing-quality risk on your margin line. Third: which of your revenue lines would survive a rate card you did not write? Lifetime shares, retained services, owned relationships survive. Rebates do not, and the largest channel in software just said so in writing.
Where this plugs in. The North Star Affiliate Network is built on the structure this issue argues for: a straight 50% lifetime recurring share across every asset in the ForgedOps.Ai suite, attributed by named relationship rather than by cookie or by fiscal-year rate card, with no upfront cost. Entry runs through a short Alignment Interview, which is the quality gate that makes an uncapped lifetime share survivable for the vendor and worth having for the partner.
Take the Alignment Interview — North Star Affiliate Network →
Sources: Microsoft Partner Center announcements, September 2026 (growth margins general availability October 1, 2026; eligibility API September 23; E5/E7/Copilot promotions ending September 30; Copilot Cowork CSP Activation Incentive September 1; flex spend plan sandbox; new Copilot commercial model), learn.microsoft.com; Microsoft partner news, October 2026, on the October 1 FY27 incentives portfolio update; FY26-to-FY27 CSP rate tables for US indirect resellers as published by Pax8 (July 28, 2026, updated August 4) and SoftwareOne (July 30, 2026), which summarise Microsoft’s incentive guide; DigitalRoute, From Usage to Revenue 2026 (631 executives, six markets, April–May 2026); PartnerStack Research Lab, network report (February 2026). The $2 million book model is the author’s arithmetic on the published rate card only; it excludes distributor margin, growth margins, activation bonuses, Frontier Accelerate and earning caps, and is illustrative rather than a forecast. Figures verified against the cited sources within the week of October 19, 2026.