Is your net PPM on Amazon shrinking, even as sales grow?

Many brands face a common problem on Amazon. As sales graphs climb, profit margins drop. Rising revenue and increased order volumes can only really be celebrated if your Net Pure Product Margin (Net PPM) is heading in same direction.

Profit, not revenue, determines the health and sustainability of your Amazon channel. And Net PPM, which reflects your true, bottom-line profitability after all fees, deductions, and contributions, is one of the most telling indicators. If it’s shrinking while sales expand, you need to get to the bottom of the problem quickly.

So let’s look at some of the most common reasons behind a falling Net PPM:

Chargebacks and shortages

Amazon’s chargebacks can feel relentless. From labelling issues and shipment timing errors to incorrect carton weights or missing Advanced Shipment Notifications (ASNs), even small slip-ups can lead to financial penalties. When compounded across multiple SKUs and shipment cycles, these seemingly minor charges can snowball into significant losses.

Similarly, shortages, where Amazon claims not to have received full quantities, can trigger disputes and deductions. Without proper reconciliation processes in place, brands often eat these costs rather than contest them.

Aggressive terms and negotiation pressure

Once you’re in Vendor Central, Amazon will often revisit terms regularly. Requests for steeper freight allowances, higher MDF contributions, or expanded co-op agreements can come under the guise of “mutual growth” but ultimately reduce your Net PPM.

What many brands don’t realise is that these terms are often negotiable. If you accept each request without pushing back or understanding the true cost to your margins, profitability will erode, regardless of top-line growth.

Lack of cost transparency and financial clarity

One of the biggest challenges that brands face on Amazon is visibility. While sales figures are easy to track, deductions such as chargebacks, allowances, shipping fees, returns handling, and storage costs, are often dispersed across different reports and departments.

Finance teams may struggle to piece together a full picture, leading to distorted margin reporting. When marketing, logistics, and finance aren’t aligned, no one truly knows where the profitability issues lie. The result? Decisions are made based on incomplete or inaccurate data, and Net PPM continues to deteriorate.

Returns and damaged inventory

Return rates on Amazon are high, especially in categories like fashion, electronics, and consumer goods. But the associated costs, such as restocking fees, damage write-offs, and shipping losses, often go unnoticed until they start to hit the bottom line.

Even more problematic is how Amazon handles returned inventory. Products may be deemed unsellable or disposed of without prior notice, creating further untracked losses that erode Net PPM.

What can you do?

If your Net PPM is shrinking, you need more than surface-level reporting. A granular, SKU-level analysis of margin performance is essential. Brands should:

• Audit chargebacks and shortages regularly, and challenge them when necessary

• Ensure cross-functional collaboration between operations, finance, and marketing

• Use tools like Amazon Marketing Cloud (AMC) to tie performance data to profitability

• Review all negotiated terms, don’t assume every Amazon ask is final

• Track returns closely and identify patterns in products or fulfilment issues

It’s easy to get swept up in the excitement of sales growth, but if your Net PPM is quietly shrinking behind the scenes, that growth may be misleading. The most successful brands on Amazon aren’t just focused on revenue, they’re laser-focused on protecting their margins. Because in the end, profitability is what keeps your brand healthy, agile, and ready to grow.

Frequently Asked Questions

Q: Why can Net PPM shrink even when Amazon sales are growing?
A: Net PPM can shrink during sales growth because increased volume often brings higher advertising costs, more chargebacks, greater fulfilment expenses, and increased co-op or allowance deductions, all of which reduce overall profitability even if revenue rises.

Q: What are the most common causes of declining Net PPM?
A: The main drivers include chargebacks and shortages, rising vendor terms and allowances, returns and damaged inventory costs, and a lack of visibility across fragmented financial data that hides true margin erosion.

Q: How do chargebacks and shortages impact Net PPM?
A: Operational errors such as labelling issues, ASN mistakes, or delivery discrepancies can lead to Amazon penalties and disputed shortages, which accumulate over time and significantly reduce product margins.

Q: Why do returns and damaged inventory reduce profitability?
A: High return rates and unsellable returned stock create hidden losses through restocking fees, write-offs, and disposal costs, which often go unnoticed but directly erode Net PPM.

Q: What can brands do to protect or improve Net PPM?
A: Brands can improve Net PPM by auditing deductions, improving supply chain accuracy, reviewing Amazon vendor terms, analysing SKU-level profitability, and using better data visibility across finance, operations, and marketing.