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Amazon PPC Profit Optimization

5 PPC Mistakes Killing Your ACOS (And How to Fix Them)

ALFI Team January 7, 2026 4 min read
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The Hidden Costs of Poor PPC Management

Running Amazon PPC campaigns without a clear strategy is akin to throwing your hard-earned money into the fire. The allure of quick sales and immediate results often tempts many sellers to dive in without a solid plan, which can lead to wasted ad spend and diminishing returns. After carefully analyzing hundreds of seller accounts, we've identified five prevalent mistakes that not only sabotage your Advertising Cost of Sales (ACOS) but can also significantly erode your profits.

Mistake #1: Ignoring Search Term Reports

Your search term report is an invaluable asset, a potential goldmine of insights that can guide your advertising to success. Unfortunately, many sellers overlook this critical tool, often checking it sporadically—perhaps once a month, if they remember at all. This neglect means missed opportunities for optimization. Picture this: you're missing a highly relevant search term that could drive sales simply because it goes unnoticed.

To fully capitalize on your search term data, create a consistent review schedule. Aim to analyze these reports weekly. Pay attention to which terms are converting well and which are falling flat. By eliminating irrelevant search terms and honing in on the profitable ones, you refine your targeting, enhance your ad spend efficiency, and significantly improve your ACOS. For instance, if you sell organic skincare, identifying and prioritizing terms like "natural acne treatment" over generic ones such as "skincare" can yield better results by reaching an audience more likely to purchase.

Mistake #2: Bidding on Everything

It's tempting to cast a wide net with your bids, hoping to capture a broad audience. However, this often results in wasted spend on keywords that don't convert. Not all keywords are created equal; some may boast high search volumes but are not closely aligned with your product.

To improve your results, concentrate your budget on keywords that have demonstrated conversion potential. Begin by analyzing performance data to identify which keywords are actually driving sales and are highly relevant to your product offerings. By focusing your efforts on these high-performing keywords, such as pinpointing "vegan leather wallet" instead of the generic "wallet," you ensure that your investment yields maximum returns.

The Bottom Line

The magic of PPC efficiency lies in the compounding effect of small, strategic improvements. Consider this: if you're managing a $100,000 monthly ad spend, reducing your ACOS by just 5% could lead to annual savings of $60,000. This is a substantial amount that can be reinvested into other facets of your business that drive growth, such as expanding your product line or enhancing customer service.

In the competitive world of Amazon advertising, precision and vigilance can make a significant impact on your bottom line. By avoiding common pitfalls and adopting a more strategic approach, you are not just saving money—you are setting the stage for sustainable growth and long-term profitability. Embracing these mindful practices will empower you to transform your advertising efforts into a powerful engine for business development.

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