TACoS Diagnostic

The "ACoS trap" is the most common 2025 PPC mistake. ACoS looks fine, but TACoS is climbing, organic rank is falling, and total profit is shrinking. The seller is cutting bids on winning keywords and watching organic sales fall with them. This skill diagnoses the pattern and rebalances.

When to use this

• ACoS is acceptable but total profit is shrinking.
• Organic rank has been sliding for a few weeks.
• Sales feel flat but ad spend keeps rising.
• The seller cut bids to "improve ACoS" and noticed organic dropped too.

The framework. The 4-Quadrant Diagnostic

Plot the trend of ACoS vs TACoS over the past 8-12 weeks.