Google Smart Bidding Strategies: The Complete 2026 Playbook for eCommerce

Smart Bidding is now the default for most spend — roughly 78% of Google Ads dollars run through AI bid strategies. The strategic question is which strategy, which target, and when to change it, not whether to use manual CPC.

Core strategies

StrategyWhat it doesWhen to use
Maximize Conversion ValueMax revenue in budgetNew campaigns / learning
Target ROASHit a return targetStable monthly conversion volume (often 30+ in window)
Maximize ConversionsMax orders in budgetVolume-first testing
Target CPAHit a CPA targetLead gen more than classic eComm ROAS goals

Recommended progression

  1. Launch on Maximize Conversion Value with accurate purchase values.
  2. After 30–50 conversions, add tROAS starting below trailing average, then tighten gradually every few weeks.
  3. Avoid thrashing: respect learning windows after major edits.

Value-based bidding (VBB)

Encode margin or LTV in values so Google chases profitable orders, not only the easiest SKU to sell. Common 2026 pairing: broad match + Customer Match signals + margin-adjusted tROAS when volume supports it.

Smart Bidding Exploration

Simulate strategy switches before you commit — use when moving from Max Conv. Value to tROAS or testing more aggressive ROAS caps.

AI overview · Automated vs manual · Pillar