Blog post
January 29, 2025

Google Ad Bidding Strategies: Target CPA vs Target ROAS Explained

Why does your Google Ads bidding strategy matter?

It's not just about spending money; it's about spending it wisely. Choosing the right bidding strategy can mean the difference between a successful campaign and a wasted budget.

Two of the most powerful strategies are Target CPA (Cost Per Acquisition) and Target ROAS (Return on Ad Spend). In this post, we'll break down these strategies and help you decide which one is right for your business.

Google Search Screen

What is Target CPA in Google Ads?

Understanding Target CPA

Target CPA (Cost Per Acquisition) is a powerful Google Ads bidding strategy that empowers you to set a specific maximum amount you're willing to pay for a desired conversion. Whether it's a product purchase, a form submission, or a phone call, Target CPA allows you to optimise your bids to achieve your desired cost-per-acquisition goal.

How Target CPA Works

When you implement Target CPA, Google's sophisticated algorithms automatically adjust your bids in real time to maximise conversions while staying within your budget constraints. This intelligent bidding system analyses various factors, including your campaign history, keywords, ad quality, and landing page experience, to determine the optimal bid for each auction.

Why Choose Target CPA?

  • Cost Control: By setting a target CPA, you have direct control over your acquisition costs. You can ensure that you're not overspending on conversions that aren't profitable.
  • Consistent Performance: Target CPA helps maintain a consistent level of performance over time. Google's algorithms learn from your campaign data and make adjustments to optimise your bids for sustained success.
  • Scalability: As your business grows, you can easily adjust your target CPA to accommodate changes in your marketing goals and budget.

Real-World Application: The Impact of Target CPA

Consider an e-commerce business that sells high-end products. By setting a target CPA of $100, the business can ensure that each conversion is profitable. Google's algorithms will then work diligently to acquire customers at or below that cost.

Industry Benchmarks: Average CPA

To gain a better understanding of industry standards, let's examine some average CPA figures:

  • Overall Average CPA: Across all industries, the average CPA for Google Ads is $51.50 for search ads and $47.81 for display ads.
  • E-commerce Average CPA: For e-commerce businesses, the average CPA is slightly lower, with search ads averaging $45.27 and display ads at $65.80.
Online Shopping

What is Target ROAS in Google Ads?

Understanding Target ROAS

Target ROAS (Return on Ad Spend) is a powerful Google Ads bidding strategy that empowers you to set a specific target return on your ad investment. By using Target ROAS, you can optimise your bids to maximise your revenue while controlling your advertising costs.

How Target ROAS Works

When you implement Target ROAS, Google's sophisticated algorithms automatically adjust your bids in real time to achieve your desired return on ad spend. This intelligent bidding system analyses various factors, including your campaign history, keywords, ad quality, and landing page experience, to determine the optimal bid for each auction.

Why Choose Target ROAS?

  • Revenue Maximisation: Target ROAS is designed to help you achieve your revenue goals. By setting a specific target ROAS, you can ensure that your advertising efforts are generating a positive return on investment.
  • Flexible Bidding: Target ROAS allows you to adjust your bids dynamically based on your campaign performance. As your business evolves, you can modify your target ROAS to optimise your results.
  • Data-Driven Optimisation: Google's algorithms continuously learn from your campaign data, enabling you to make informed decisions and refine your strategy over time.

Real-World Application: The Impact of Target ROAS

Consider an e-commerce business that sells high-end products. By setting a target ROAS of 4:1, the business aims to generate $4 in revenue for every $1 spent on advertising. Google's algorithms will then work diligently to acquire customers who are likely to spend more, ensuring that the business achieves its revenue goals.

Industry Benchmarks: Average ROAS

To gain a better understanding of industry standards, let's examine some average ROAS figures:

  • Overall Average ROAS: Across all industries, the average ROAS for Google Ads is 200%, meaning that businesses, on average, earn $2 for every $1 spent on advertising.
  • Industry-Specific ROAS:
    • Travel Industry: The travel industry boasts a higher-than-average ROAS of 4.3:1, indicating strong returns on ad spend.
    • Retail Industry: The retail industry has an average ROAS of 2.8:1, which is still a healthy return on investment.

Target CPA vs Target ROAS: Key Differences Simplified

FeatureTarget CPATarget ROASFocusCost per acquisitionReturn on ad spendGoalConsistent acquisition costsMaximise revenueIdeal forBusinesses with a fixed budget and clear acquisition goalsBusinesses seeking maximum ROI and revenue growth

When to Choose Target CPA or Target ROAS?

  • Target CPA: Ideal for businesses with a fixed budget and a specific cost-per-acquisition goal.
  • Target ROAS: Perfect for businesses aiming to maximise revenue and are willing to adjust their budget based on performance.

Decoding Your Goals: Picking Between Target CPA and Target ROAS

To choose the right strategy, consider the following:

  1. Define your goals: Are you focused on acquiring new customers or maximising revenue?
  2. Set a budget: Determine how much you're willing to spend on advertising.
  3. Track your metrics: Monitor key metrics like conversion rate, cost per acquisition, and return on ad spend.

Optimising Google Ad Bidding Strategies for Maximum ROI

Choosing the right Google Ads bidding strategy is crucial for maximising your return on investment (ROI). Remember, the best strategy is the one that aligns with your specific business goals. Experiment with different approaches and use A/B testing to find what works best for you.

Here's where Adcraft Studio comes in. Our team of experienced Google Ads specialists can help you navigate the complexities of bidding strategies and develop a customised campaign plan that aligns with your unique goals. Whether you're focused on maximising conversions, driving brand awareness, or achieving a specific target return on ad spend (ROAS), we can help you craft the perfect strategy to achieve success.

Wrapping it up...

By understanding the nuances of Target CPA and Target ROAS, you can make informed decisions about your Google Ads bidding strategy. Remember, the key to success is to continuously monitor and optimise your campaigns to achieve your desired results.

FAQ

What is the main difference between Target CPA and Target ROAS? 

Target CPA focuses on cost control, while Target ROAS prioritises revenue maximisation.

Which strategy is better for a tight budget? 

Target CPA is generally a good choice for businesses with limited budgets, as it allows you to control your costs.

Can I combine Target CPA and Target ROAS in one campaign? 

No, you can only use one bidding strategy per ad group.
External Source:
Learn more about Google Ads Bidding Strategies from Google Ads Support Website