Amazon’s New Sponsored Products Fee Structure Is Reshaping FBA Margins

Amazon’s advertising team sent a notice to seller accounts on June 18, 2026, that most operators didn’t read carefully enough. Buried inside a routine policy update was a structural change to Sponsored Products bidding: a category-specific minimum CPC floor, ranging from $0.18 in commodity home goods to $0.75 in high-competition supplement and beauty verticals. For sellers running lean ACoS targets in the 18–22% range, the floors are blowing up months of bid optimization work overnight.

By late June, threads in the Seller Central forums and the Amazon FBA Masterminds Facebook group — which counts over 94,000 active members — were running hot. Sellers in kitchen, pet, and personal care categories reported average CPCs jumping 22–31% week-over-week, with no corresponding lift in conversion rates to justify the spend.

What exactly did Amazon change about Sponsored Products bidding?

Amazon’s updated policy introduces what the company internally refers to as a “relevance-weighted minimum bid,” according to documentation reviewed by Ecommerce Times. Unlike the old system, where a $0.02 bid was technically valid (even if it rarely won impressions), the new floor is enforced at the ad auction level. Bids below the category floor are automatically bumped to the floor price before entering the auction — meaning sellers can no longer use ultra-low bids as a traffic throttle on low-priority ASINs.

The change also affects dynamic bidding. Under “Dynamic Bids – Down Only,” Amazon’s algorithm previously had latitude to reduce bids below a seller’s set amount. That downward adjustment now stops at the new floor, removing a key cost-control lever that many experienced sellers had baked into their PPC architecture.

“We had 140 SKUs running at sub-floor bids as a way to maintain indexing without burning budget. All of those campaigns essentially repriced themselves overnight. Our blended ACoS went from 21% to 29% in two weeks.” — Cody Langlois, founder of Apex Outdoor Brands, a seven-figure FBA seller in the camping and hiking niche

💡 Article Summary

Key Insights

1

What exactly did Amazon change about Sponsored Products bidding?

2

Which Amazon seller categories are absorbing the biggest CPC increases?

3

Are Amazon’s own brands benefiting from the floor changes?

4

How are agencies and PPC tools responding to the floor changes?

5

What operational adjustments are sellers making right now?

Source: Ecommerce Times

Which Amazon seller categories are absorbing the biggest CPC increases?

Data pulled from Perpetua’s benchmark dashboard — which aggregates anonymized campaign data from over 12,000 Amazon seller accounts — shows the following average CPC increases by category between May 27 and June 28, 2026:

• Beauty & Personal Care: +34% average CPC, floor set at $0.72
• Health & Household: +28% average CPC, floor set at $0.61
• Kitchen & Dining: +19% average CPC, floor set at $0.31
• Pet Supplies: +24% average CPC, floor set at $0.44
• Sports & Outdoors: +17% average CPC, floor set at $0.28
• Toys & Games: +11% average CPC, floor set at $0.22

Sellers in lower-competition categories like tools, automotive parts, and industrial supplies have seen minimal impact, with floors landing at or below their historical average bids. The pain is concentrated in the high-intent, high-repurchase verticals where Amazon’s own private label brands — including Amazon Basics, Solimo, and Lark & Ro — compete directly against third-party sellers.

Are Amazon’s own brands benefiting from the floor changes?

That question is generating significant friction in the seller community, and it’s not a new concern. But the timing of the floor rollout — coinciding with Amazon’s mid-year push on its private label portfolio ahead of Prime Day 2026, which runs July 15–16 — has amplified suspicions.

“When Amazon raises the floor on CPCs in the exact categories where it competes with third-party sellers, you have to ask who that policy serves. It’s not us.” — Daniela Ruiz, CEO of Verde Essentials, a clean beauty brand doing approximately $4.2M annually on Amazon

Amazon has not publicly commented on whether its first-party retail team receives preferential advertising rates. An Amazon spokesperson provided a statement to Ecommerce Times indicating the floor changes are “designed to improve ad quality and relevance for shoppers,” but declined to provide specific methodology for how floors are calculated by category.

Patrick Miller, co-founder of Flywheel Commerce Network and a longtime Amazon advertising strategist, said the floors are likely tied to Amazon’s internal signals around minimum bid-to-quality-score thresholds — not a direct subsidy to private label. “Amazon wants its auction to look healthy to Wall Street. Floors inflate reported CPMs and average CPCs, which makes the ad business look more premium. It’s partly optics, partly yield management,” Miller told Ecommerce Times.

How are agencies and PPC tools responding to the floor changes?

Third-party advertising platforms that serve Amazon sellers are moving quickly to update their bidding logic. Perpetua released a patch on June 25 that automatically detects floor prices by category and adjusts minimum bid settings in bulk campaigns to prevent wasted impressions from sub-floor bids. Teikametrics pushed a similar update on June 27, with a new “Floor Compliance Mode” toggle in its Flywheel 2.0 dashboard.

Helium 10’s Adtomic product updated its bid recommendation engine to account for floors, surfacing a “Floor Risk” score on any ASIN where the suggested bid falls within 10% of the category floor. The feature rolled out in beta on June 30 to Helium 10 Diamond subscribers.

“The sellers who are getting hurt are the ones who built their entire PPC architecture around keeping bids artificially low to suppress spend on tail ASINs. That playbook is gone. You need to think about portfolio-level profitability now, not ASIN-level ACoS.” — Mina Elias, founder of Trivium Group and well-known Amazon PPC educator

Agencies are responding by restructuring campaign portfolios. Trivium Group, which manages PPC for over 200 Amazon brands, is reportedly consolidating low-volume ASINs into single-bid ad groups with shared budgets, reducing the number of campaigns that hit the floor simultaneously. Several other agencies reached by Ecommerce Times confirmed similar restructuring work is underway.

What operational adjustments are sellers making right now?

Beyond PPC restructuring, the floor changes are accelerating several upstream decisions among FBA operators:

• Raising retail prices: Several sellers in the beauty and health categories told Ecommerce Times they’ve pushed through 4–7% price increases since June 18 to recover margin, accepting a short-term conversion rate dip.
• Shifting budget to Sponsored Brands and DSP: Sellers with brand registry are reallocating 10–15% of their Sponsored Products budgets to Sponsored Brands Video, where floor mechanics are currently less aggressive, and to Amazon DSP for retargeting via managed service partners.
• Accelerating FBM hybrid setups: Some sellers are activating FBM listings on lower-margin SKUs to reduce FBA fee exposure while cutting Sponsored Products spend on those ASINs entirely, relying on organic rank maintenance instead.
• Expanding to Walmart Marketplace: Several sellers contacted for this article said the floor changes are finally pushing them to take Walmart Marketplace seriously as a margin-relief channel, citing Walmart’s lower advertising CPCs and less competitive auction dynamics in comparable categories.

The Walmart angle is notable. Walmart Connect, the marketplace’s advertising arm, has been aggressively recruiting Amazon sellers since Q1 2026, offering managed onboarding credits of up to $2,500 for sellers migrating SKUs from Amazon. With Amazon’s ad costs rising, that offer is landing differently than it did six months ago.

What should sellers do before Prime Day 2026 to protect margins?

With Prime Day 2026 roughly two weeks out as of press time, the urgency is acute. Sellers who rely on heavily discounted Prime Day promotions to drive velocity — and who fund that velocity with aggressive Sponsored Products spend — are staring at a compressed margin window that didn’t exist in prior years.

The tactical advice circulating among top sellers and agencies breaks into three buckets:

• Audit every campaign for sub-floor bids immediately using Helium 10 Adtomic’s Floor Risk score or Perpetua’s floor detection report, and manually reset bids to 15–20% above the floor to maintain auction competitiveness.
• Recalculate break-even ACoS for every promoted ASIN using updated CPC assumptions — not historical averages. Sellers using static ACoS targets set before June 18 are working with stale inputs.
• Front-load lightning deals and coupons rather than relying on PPC-driven traffic alone during Prime Day, since coupon visibility in search results provides organic-adjacent exposure without CPC exposure.

For FBA operators who have built their business on the assumption that Sponsored Products CPCs would remain controllable through bid architecture, the June 2026 floor rollout is a structural reset. The sellers who adapt fastest — repricing, restructuring campaigns, and diversifying channel spend — will likely emerge from Prime Day in better shape than those still optimizing against a bidding environment that no longer exists.