Amazon Vendor Economics · Glossary

Net PPM

Updated October 20, 2026

Net PPM (Net Pure Product Margin) is Amazon's product-level profitability metric for the ASINs a 1P vendor sells through Vendor Central: what Amazon earns reselling your products, net of co-op and every other vendor-funded dollar Amazon books as contra-COGS, before advertising, chargebacks, and payment-term costs. It sits under Reports, Retail Analytics, Net PPM, and it is the number your Vendor Manager quotes to you when discussing profitability, though not the main one they are judged on.

What is the Net PPM formula?

As third-party sources document it, the formula has four parts, shown as a margin percentage on each ASIN:

Net PPM = Shipped Revenue - Shipped COGS + Contra-COGS - Sales Discounts

Amazon's own vendor analytics schema states the same formula, divided by shipped revenue. The contra-COGS term carries a plus sign because vendor-funded dollars lower Amazon's cost of goods and raise its margin on your product.

Contra-COGS here is every vendor-funded dollar Amazon books against its cost of goods, not only the trade terms. It takes in the accruals set in the vendor agreement and revisited at the annual negotiation (base marketing co-op, promotional allowances, freight and damage allowances, growth rebates, the AVS fee) and the dollars agreed outside those terms: straight-pay agreements, matching compensation and event participation. The more of it you fund, the higher Amazon's Net PPM on the product and the lower your net revenue.

Why Net PPM is an estimate

Three things make it an estimate rather than an accounting fact. It excludes shipping costs, which vary with item weight and dimensions. Amazon publishes no Net PPM level that keeps an ASIN safe; products have been dropped with a small positive Net PPM. And Amazon books the contra-COGS inside Net PPM at sale time from an estimate, not from your actual co-op billing, so fixed-dollar agreements with no ASIN assignment cannot allocate cleanly; one documented vendor case shows a $31M gap between dashboard Net PPM and the vendor's books. Around May 2025 Vendor Central also stopped showing Sales Discount and Contra-COGS as separate lines in Net PPM. One practitioner source blames an interface bug and, as of January 2026, points to the Sales report's Sourcing distributor view as the only place those columns still appear. Either way the on-screen figure is Amazon's estimate: the formula explains the metric, and your own deduction data supplies the contra-COGS term.

Why it matters to a 1P vendor

Net PPM decides how much attention your ASINs get. A product whose Net PPM flatters the category earns purchase orders and support; one that drags it triggers cost-decrease requests, term increases, or CRaP status, where Amazon quietly stops reordering. Your Vendor Manager is judged on category profitability, and Net PPM is the closest thing to that score you are allowed to see.

Use it directionally: trend, ASIN ranking, and early warning of CRaP risk. For actual margin, reconcile your own deduction-adjusted P&L. A gap between the two is a lead, not proof of leakage: part of it comes from how Net PPM is estimated, and a Margin Recovery Audit checks the rest deduction by deduction, from the same Retail Analytics exports plus your remittance and backup reports.