Fragmented Negative Keywords and Duplicate Amazon Ads Spend

Why fragmented negative keywords create duplicate spend

In many Amazon Ads portfolios, each campaign is treated as its own silo. A term that is identified as irrelevant in a broad or auto campaign may still receive clicks through phrase, exact, or product targeting elsewhere. Without a shared negative keyword list or consistent review step, those terms reappear in search term reports and continue to accumulate spend.

This is especially common when account managers split work by product line or marketplace. One team may add a negative in one campaign while another team is unaware, leading to duplicated effort and inconsistent coverage across related campaigns.

Practical steps for centralising negative keyword management

A more reliable approach is to treat negative keyword discovery as a portfolio-level task. Start by consolidating search term reports across campaigns and marketplaces, then review terms against shared performance criteria such as orders, ROAS, and campaign maturity. Tools like Amazon Negative Keyword Tool by Todoza are designed to rank search terms from Amazon Ads search term reports and provide cross-campaign visibility from a Waste & Efficiency dashboard.

Key workflow habits include:

• Reviewing search terms at daily or weekly intervals rather than only during campaign builds.
• Maintaining one approved list of confirmed negatives that can be applied consistently.
• Using campaign-specific signals alongside portfolio-level checks to avoid blocking useful terms.
• Requiring team approval for negative keyword additions so changes stay intentional.

When this matters

Centralised negative keyword management has the biggest impact for accounts running multiple campaigns with overlapping targeting, especially broad and automatic campaigns. If a search term spends across several campaigns without a single order, that repeated cost is easier to see and stop when review is consolidated. It also matters for teams handling multiple marketplaces, where the same issue can scale quickly.