How to Reduce Google Ads CPA (Cost per Action)

reducing google ads cpa by keyword level budget reallocations and value track parameters

An easy strategy to reduce Google Ads CPA involves using ‘Value Track Parameters’ creatively. And lots of data analysis.

With CPMs and CPAs increasing by the day, effective ways to refine your ads strategy are hard to come by.

Rising CAC is unsustainable.

Understanding Value Track Parameters

Value Track Parameters might sound like something only a seasoned PPC specialist would understand.

But I assure you, it’s a concept that can be grasped and utilized by marketers of all levels.

These parameters allow you to capture vital information about the source of your clicks.

Thus enabling a deeper analysis of your campaign’s performance.

TL;DR: 5 Steps to Reducing Google Ads CPA

  1. Go into your campaign settings.
  2. Find the URL tracking template.
  3. Add {keyword} in the query string.
  4. Store {keyword} along with your lead data.
  5. Reallocate budget to best performing keywords.

Below are the steps in more detail:

1. Setting the Stage

The goal here is to append specific codes (collectively called ‘Value Track Parameters’) to your landing page URLs.

Adding within campaign settings is most effective.

For example, by creating a URL like {lpurl}?keyword={keyword}, you can track which keywords are driving traffic to your site.

This enables Google to pass on information about each click.

You can read Google’s full guide here.

2. Crafting URL Tracking Template for Insights

Your tracking template can contain multiple parameters appended e.g. I append the following template for highest visibility –

?utm_source=google&utm_medium=search&utm_campaign={campaignid}&utm_term={keyword}&utm_content={creative}

There are many more parameters you can add. The ones most popular are –

list of google search ads value track parameters for cpa reduction

3. Accurate Keyword Tracking

Ensure your keywords are set to ‘exact’ and ‘phrase’ match types rather than ‘broad’.

4. Data Capture + Lead Tagging

Save the {keyword} value in URL, along with lead data in your CRM. Then your leads are tagged with keywords –

5. Data Analysis + $$$

Consider the following example.

Before you added Value Track Parameters, your data looked something like this –

KeywordCostCPLLeadsConversionCustomersCAC
keyword 150000500100???
keyword 22000040050???
Total7000046715033%501400

You know your CAC but not at a granular level.

After adding Value Track Parameters, this is how you can now see your data –

KeywordCostCPLLeadsConversionCustomersCAC
keyword 15000050010020%202500
keyword 2200004005060%30667
Total7000046715033%501400

Now you know which keywords are performing poorly and which ones are not.

Also note that you need to have enough data to understand whether you can statistically replicate your wins. Read more about statistical significance here in this article on Minimum Viable Scale in Performance Marketing.

Further, you can now allocate more budget to the better performing keywords.

Earlier, this is what you had –

KeywordCostCPLLeadsConversionCustomersCAC
keyword 150000500100???
keyword 22000040050???
Total7000046715033%501400

After reallocating spends, this is how your CAC looks like –

KeywordCostCPLLeadsConversionCustomersCAC
keyword 1100005002020%42500
keyword 26000040015060%90667
Total7000041217055%94745

In our example, we’ve seen a reduction of ~47% in Google Ads CPA.

With many of my clients, I’ve seen ROAS go up by 20% – 300%!

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