Amazon Pay-Per-Click (PPC) advertising is a powerful tool for sellers looking to boost product visibility and increase sales. However, running PPC campaigns efficiently requires proper optimization to maintain profitability. One key metric that determines the success of a campaign is the Advertising Cost of Sale (ACoS). A lower ACoS means higher profitability, but achieving this requires strategic planning. This guide will explore the best practices for optimizing Amazon PPC to reduce ACoS while maximizing profits.
Understanding ACoS and Its Impact
What is ACoS?
ACoS (Advertising Cost of Sale) is the ratio of ad spend to sales revenue, calculated as:
ACoS = (Total Ad Spend / Total Sales) × 100
A lower ACoS indicates a more cost-effective campaign, meaning you’re spending less on ads while generating more revenue.

Why is Lowering ACoS Important?
Reducing ACoS allows sellers to maximize profitability. A high ACoS means excessive spending on ads without proportional returns, cutting into margins. Sellers need to find the right balance between ad spend and revenue generation.
Effective Strategies to Lower ACoS
1. Conduct In-Depth Keyword Research
Choosing the right keywords is essential for improving PPC performance. Sellers should:
- Use Amazon’s search term reports to identify high-performing keywords.
- Utilize keyword research tools like Helium 10, Jungle Scout, or MerchantWords.
- Focus on long-tail keywords, which have lower competition and cost per click (CPC).
2. Optimize Bidding Strategies
Amazon PPC allows different bidding strategies to control ad spend:
- Dynamic Bidding (Down Only): Amazon lowers bids when conversion likelihood is low.
- Dynamic Bidding (Up and Down): Amazon adjusts bids based on conversion probability.
- Fixed Bidding: Keeps bid amounts unchanged.
For ACoS reduction, using Dynamic Bidding (Down Only) can help prevent overspending on unprofitable clicks.
3. Improve Product Listings for Better Conversions
A well-optimized product listing converts more visitors into buyers, helping reduce ACoS. Ensure:
- High-quality images showcasing the product from multiple angles.
- Clear and engaging product titles with relevant keywords.
- Compelling bullet points and descriptions emphasizing benefits.
- Enhanced Brand Content (A+ Content) for added visual appeal and trust-building.
4. Leverage Negative Keywords
Negative keywords prevent ads from showing for irrelevant searches, reducing wasted spend. Sellers should:
- Regularly analyze search term reports to identify unprofitable keywords.
- Add irrelevant or low-converting terms to the negative keyword list.
- Use both exact match and phrase match negative keywords for better control.
5. Adjust Campaign Structure and Ad Placement
A well-structured PPC campaign leads to better performance. Consider:
- Separating campaigns by match types (broad, phrase, and exact).
- Creating individual campaigns for top-performing ASINs.
- Testing Sponsored Products, Sponsored Brands, and Sponsored Display ads for the best ROI.
6. Monitor and Optimize Ad Performance Regularly
- Use Amazon’s PPC reports to track keyword performance.
- Pause underperforming ads or reduce bids on low-converting keywords.
- A/B test different ad creatives and descriptions to find what works best.
- Adjust budgets based on seasonal demand and competitor activity.
Increasing Profits While Lowering ACoS
1. Focus on High-Converting Keywords
- Identify keywords with low CPC and high conversion rates.
- Allocate more budget to top-performing search terms.
- Remove or lower bids on keywords that don’t generate sales.
2. Implement Bid Optimization Tools
- Consider using AI-driven PPC automation tools like Sellics, Perpetua, or Teikametrics.
- Automate bid adjustments based on real-time performance data.
3. Use Remarketing Strategies
- Utilize Sponsored Display ads to re-engage past visitors.
- Target competitor product pages to capture their audience.
4. Bundle Products for Higher Order Value
- Offer product bundles to increase average order value.
- Promote bundled deals through Sponsored Brands ads.
5. Optimize for Organic Ranking
- PPC and organic rankings are interconnected. By improving PPC efficiency, organic sales also increase.
- Encourage verified customer reviews for better rankings and conversion rates.
Conclusion
Amazon PPC optimization is not just about cutting costs but also about making smarter investments in high-performing campaigns. By focusing on keyword research, bid adjustments, listing optimization, and strategic ad placements, sellers can lower ACoS while increasing overall profits. Consistent monitoring and data-driven decisions are key to sustaining long-term success in Amazon advertising.
FAQs:
1. What is ACoS in Amazon PPC, and why is it important?
Answer: ACoS (Advertising Cost of Sale) is the percentage of ad spend relative to sales revenue. It helps sellers measure ad efficiency. A lower ACoS means better profitability, while a higher ACoS may indicate excessive spending on ads compared to revenue.
2. What is a good ACoS for Amazon PPC?
Answer: A good ACoS depends on your business goals. Generally, an ACoS below 25% is considered profitable for most sellers, but for brand awareness campaigns, a higher ACoS may be acceptable.
3. How can I lower my ACoS on Amazon?
Answer: Lowering ACoS requires optimizing keywords, improving product listings, refining targeting, using negative keywords, adjusting bids, and analyzing ad performance regularly to eliminate wasteful spending.
4. How do negative keywords help reduce ACoS?
Answer: Negative keywords prevent your ads from showing up for irrelevant searches, reducing wasted ad spend and improving conversion rates. This helps lower ACoS by ensuring your budget is spent on high-intent shoppers.
5. Should I use automatic or manual campaigns for lower ACoS?
Answer: A combination works best. Start with automatic campaigns to discover profitable keywords, then transfer the best-performing keywords to manual campaigns for better control and cost efficiency.
6. How does bid optimization impact ACoS?
Answer: Lowering bids on high-ACoS keywords and increasing bids on profitable keywords ensures that your budget is allocated effectively, reducing wasted spend and optimizing profitability.
7. How important is listing optimization in reducing ACoS?
Answer: Very important! A well-optimized listing with high-quality images, compelling descriptions, and relevant keywords improves conversion rates, helping you generate more sales with the same ad spend, which lowers ACoS.
8. What is TACoS, and how does it relate to ACoS?
Answer: TACoS (Total Advertising Cost of Sale) measures ad spend relative to total revenue (organic + PPC). A declining TACoS indicates that your organic sales are growing, reducing dependency on ads for sales.
9. How can I scale my PPC while maintaining a low ACoS?
Answer: Gradually increase bids on profitable keywords, expand to new keyword opportunities, test different match types, optimize placements, and reinvest profits into high-performing campaigns.
10. How often should I monitor and adjust my PPC campaigns?
Answer: Regular monitoring is crucial. Check your PPC performance at least weekly, analyze keyword performance, adjust bids, add negative keywords, and refine targeting to keep ACoS in check while maximizing profits.