> ## Documentation Index
> Fetch the complete documentation index at: https://docs.onlinebrandgrowth.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How to Diagnose Wasted Amazon PPC Spend

> A practical method for finding wasted Amazon ad spend: search term audits, negative keyword gaps, structural problems, and margin-blind bidding.

**Most wasted Amazon PPC spend comes from four sources: search terms that never convert, missing negative keywords, structural campaign problems, and bidding without knowing per-ASIN margins.** Here is how to find each one in your own account.

## 1. Audit the Search Term Report

Pull 60-90 days of search term data. Sort by spend and flag every term with meaningful spend and **zero orders**. Sum that spend - for many accounts this alone reveals a significant monthly leak.

## 2. Check Negative Keyword Hygiene

Every zero-converting term you found should become a negative (exact or phrase) in the campaigns where it appears. Then check whether your **branded** and **generic** traffic are separated - without negatives isolating them, expensive generic campaigns quietly absorb cheap branded clicks and flatter their own numbers.

## 3. Find Structural Problems

* Overlapping campaigns bidding on the same terms against each other
* Auto campaigns never harvested into exact-match manual campaigns
* One budget shared across winners and losers, so losers drain what winners could use
* Identical bids across ASINs with very different margins and conversion rates

## 4. Bid Against Real Margins

Calculate break-even ACoS per ASIN: contribution margin before ads, divided by price. Any ASIN consistently running above its break-even ACoS is buying unprofitable sales. Free tool: [Breakeven Calculator](https://www.onlinebrandgrowth.com/tools/breakeven-calculator). And judge account-level health with TACoS, not ACoS alone - see [ACoS vs. TACoS](/guides/acos-vs-tacos).

## Fixing It

Cut the waste first (negatives, budget reallocation), then rebuild structure (segmentation, harvesting), then scale winners toward page-1 rank. This is the sequence OBG uses in its [PPC management service](/services/amazon-ppc-management), and the advertising section of the free [OBG360 Audit](/services/obg360-audit) quantifies your waste for you. [Book yours free](https://www.onlinebrandgrowth.com/#book-call).