Google Ads ROAS and AOV Benchmarks

Macro-Trend Analysis: ROAS & AOV

Overall Trajectory & YoY Gaps

• Profitability Surge: Current year ROAS consistently outperforms the previous year from October through May. The profitability gap widened most significantly during the holiday peak (December) and late Q1 (February/March).
• Spending Power Shift: AOV mirrors this early strength, staying elevated YoY through May. However, the gap abruptly narrows and inverts during the summer (June–August), signaling a distinct cooling in consumer willingness to spend.

Metric Divergence: CAC vs. Pricing Power

• The Summer Anomaly: Between June and August, AOV drops below the previous year, yet ROAS remains higher.
• Strategic Implication: This divergence reveals that while retailers lost pricing power (consumers buying smaller baskets or trading down), Customer Acquisition Costs (CAC) improved significantly. Advertisers maintained profitability not through larger carts, but through highly efficient, lower-cost conversions that offset shrinking basket sizes.

External Drivers & Market Forces

• Algorithmic Efficiency: The sustained ROAS growth, even when AOV dips, points heavily to the maturation of AI-driven campaign types (e.g., Performance Max) and widespread adoption of Value-Based Bidding (VBB). These systems are successfully identifying high-probability converters at lower CPCs to protect margins.
• Macroeconomic Caution: The Q1 AOV spike reflects peak inflationary pricing and lingering holiday momentum. Conversely, the summer AOV contraction indicates consumer economic fatigue. As shoppers became more price-sensitive and cautious, retailers were forced to rely on algorithmic bidding efficiency rather than premium pricing or volume to sustain their ROAS.