Monitoring Average CPC (Avg. CPC) trends are essential for managing your budget and assessing the competitiveness and efficiency of your Google Ads campaigns. Avg. CPC is calculated as 

Total Ad Cost \ Total Clicks.

You can effectively monitor these trends using the standard reporting tools within the Google Ads interface.

Step-by-Step Guide to Monitoring CPC Trends

Step 1: Navigate to the Data Level

Start by selecting the appropriate level in the left-hand menu where you want to see the trend:

1. Click Campaigns in the left menu for a high-level view.

2. Click Keywords (found under Audiences, keywords, and content in the menu).

Step 2: Ensure the Metric is Visible

The Avg. CPC column is available by default in most views. If you don’t see it:

1. Click the Columns icon above the data table.

2. Select Modify columns.

3. Expand the Performance section.

4. Check the box next to Avg. CPC

5. Click Apply.

Step 3: Use the Date Range and Graph

This is the most critical step for monitoring trends:

1. Use the date selector in the top-right corner to choose a period long enough to show a trend (e.g., “Last 30 days,” “Last 90 days,” or “Compare: Previous Year”). Comparing periods is the best way to spot trends and seasonal shifts.

2. Above the data table, click the Graph icon to display the trend over time.

3. Ensure the Avg. CPC metric is selected in the graph menu to clearly see how your average cost per click is trending day-by-day or week-by-week over your selected date range.

Step 4: Analyse by Time Segmentation

To identify when a trend shifted, use the Segment tool:

1. Click the Segment button above the data table.

2. Select Time, then choose a breakdown like Day, Week, or Month.

3. This breaks the rows in your table down by your selected time period, allowing you to easily compare the Avg. CPC from one week to the next.

Expert Advice and Trend Analysis

1. Look for the “Why” Behind the Change

A change in Avg. CPC is often a symptom, not the root cause. When you see a change in the trend, look for correlation with other metrics:

2. Benchmarking is Key

• Compare your Avg. CPC against industry benchmarks. The overall Google Ads average CPC is around £4.66 for search ads, but competitive sectors like Legal Services or Home Improvement can see costs much higher (upwards of £8.00). If your campaign is well below the industry average, you might be missing out on valuable traffic.

• Use the Keyword Planner (found under Tools > Planning) to get estimated top-of-page bids for your target keywords. If your Avg. CPC is consistently higher than the top-of-page bid estimate, you need to investigate your Quality Score and ad relevance.

3. Optimise Quality Score to Lower CPC

Improving your Quality Score (found at the keyword level) is the most effective long-term way to lower your Avg. CPC. A high Quality Score tells Google that your ad is highly relevant, and in return, you get a lower price per click.

• Formula: Ad Rank = Max. Bid X Quality Score

• Principle: Since Quality Score is a multiplier in the auction, improving it means you can pay less (lower CPC) than a competitor with a lower Quality Score and still win the same ad position.