Your Google Ads account looks healthy. Target CPA? Hitting. Target ROAS? Hitting. Yet revenue, profit, and new customers have barely moved. That gap is not a bidding bug. It is the system doing exactly what it was asked to do.
Smart Bidding optimizes for the target, not the business
Smart Bidding is built to hit the numbers in the target field. If those numbers are disconnected from margin, customer mix, or incremental revenue, the algorithm still chases them. The result is an account that reports success while the business stalls.
Google’s August 17 bidding update makes this harder to ignore. Search Engine Journal notes that budget-constrained campaigns using tCPA and tROAS will now be pulled closer toward their stated targets instead of significantly outperforming them. In practical terms, an outdated target isn’t a soft guardrail anymore—it’s a hard instruction.
Seven ways an account can hit its goals and still stall
If growth is flat while efficiency looks strong, one of these leaks is usually hiding in the setup:
- Targets set once and forgotten. A 4.0x ROAS on a 20% margin product line is very different from the same 4.0x on a 60% margin line. Hitting one can mean losing money.
- Smart Bidding chases returning customers. Existing buyers convert cheaper, so bids drift toward people who would have bought anyway. The customer base never really expands.
- Brand terms claim credit for existing demand. High-ROAS brand and retargeting campaigns can inflate attribution while incremental revenue stays flat.
- Proxy conversions replace sales. Form fills and booked calls are not revenue, and the algorithm gets better at finding submitters, not buyers.
- Efficiency caps restrict reach. A very low CPA or very high ROAS tells the algorithm to skip auctions that could have been profitably incremental.
- All conversions count equally. Cheap, low-lifetime-value buyers can flood the account while churn rises.
- The leak is downstream. Slow follow-up, out-of-stock products, or poor onboarding can break the link between clicks and revenue.
Where to look first
Start with the target itself: when was tCPA or tROAS last set, and what was it based on? Can anyone connect it to current margins? Then check new versus returning customer share. Then check how much reported revenue sits in branded campaigns, and whether non-brand spend actually moves total business revenue. Next, ask whether your primary conversion action is a real sale or a maybe sale, and check impression share lost to rank on campaigns already hitting target. Finally, follow what happens after the click: lead response time, close rates versus other channels, and any stock or capacity gaps.
Reframe the dashboard
Growth teams should compare ad targets against actual financials at least quarterly. Track incremental new-customer revenue, not just blended ROAS. If a target cannot be explained by current unit economics, change it. If the account is hitting every number and the business is not growing, the ceiling is probably in the account settings, not the market.
Source: Search Engine Journal
