Target CPA (tCPA)
Target CPA (tCPA) explained — Google's automated bidding to a cost-per-acquisition goal, now folded into AI Max workflows.
Updated July 2026.
A Smart Bidding strategy where you set a target cost per acquisition and Google automatically sets bids to win conversions at or near that cost.
Formula
Bids optimized toward: Ad Spend ÷ Conversions = your Target CPA
Benchmark range
Set your target near your recent actual CPA, then adjust gradually. Aggressive targets below market reality will throttle volume.
Why it matters
tCPA automates bidding toward a clear efficiency goal, but setting it too low starves delivery while setting it too high overspends. It needs steady conversion volume to learn.
2026 update
tCPA returned as a standalone strategy name in June 2026. The bigger change is August 17, 2026: bidding will deliver to the literal target you set, so if you have been over-performing your target, tighten it (adjustment tool live July 6, 2026). With Google's average CPL falling for the first time in five years, many advertisers can tighten targets that were previously unrealistic — but move in small steps to avoid re-triggering the learning phase.
Where it applies
- Google Ads