Google Ads changes how budget-limited campaigns running Target CPA or Target ROAS behave starting today, August 17. A campaign that had been beating its target because its budget was limited will now optimize toward the number the advertiser typed in rather than the better number it had been delivering.
Campaigns that consistently outperformed their targets did so because their budget was limited, and from today Google Ads steers them back toward the number set in the account, described on Google’s Help page as optimizing “more consistently toward your target when your campaign has a limited budget.” Search Engine Land described the result as making the target the primary lever for controlling efficiency even on a constrained budget, aimed at cutting the performance swings that follow whenever a budget changes.
What changes for target-based bid strategies?
Google Ads now optimizes budget-limited campaigns more consistently toward the Target CPA or Target ROAS value an advertiser set, instead of letting them settle below the target cost or above the target return while the budget is limited. The change applies only where all three conditions hold: the campaign uses a target, is limited by budget, and has been overachieving that target; campaigns not limited by budget are unaffected. Google states it will not adjust anyone’s targets or budgets to compensate, and the rollout is gradual rather than a single switch flipped today.
Scope: three conditions, and where the line sits
Target CPA and Target ROAS are the strategies in scope, along with Target CPC on Demand Gen campaigns. Asked directly whether anything changes for campaigns that are not limited by budget, Google Ads Liaison Ginny Marvin answered: “No.” Ad group-level targets are also in scope, and the existing hierarchy holds: an ad group target still supersedes the campaign target. Marvin cautioned that ad group targets “can have constraints on smart bidding” and suggested advertisers reconsider whether they need them.
Google calls the tool the Target Adjustment Tool. It surfaces as a notification banner reading “Review your campaign targets” at the top of the account dashboard, or under a campaign’s Settings icon, Bidding, “Review campaigns.” Google’s own wording on the underlying policy is direct: “Google will not automatically adjust your bidding targets or budgets.”
Practitioners split on the framing
Freelance Google Ads consultant Joey Bidner has argued the update “favors Google over advertisers,” reading it as strict enforcement of loose targets that removes an efficiency buffer some advertisers kept on purpose. Bidner and Maggie Humphrey both read it as a broader Smart Bidding overhaul presented as a narrow fix. Marvin rejected that framing, saying Google is “making the controls clearer” and that unconstrained campaigns already behave this way.
The forecasting gap advertisers now sit inside
Google’s Help page warns that Performance Planner and other planning tools will be updated for the new behavior, but flags a transition window: “Please use caution when using forecasts from August 17 to August 31.” That is precisely the two weeks an advertiser adjusting to a corrected target would normally spend re-forecasting spend and expected volume, using forecasts Google itself flags as possibly inaccurate for that fortnight.
Measuring the landing side independently matters more during that gap, since Google’s own forecasts carry the caveat. Campaign parameters built through a consistent process, such as elsop’s UTM builder, keep campaign data comparable in first-party analytics across the transition regardless of what Performance Planner says this fortnight.
The target itself is only as good as what feeds it. Smart Bidding optimizes against the conversions it is given, and our report on Google’s GBRAID documentation found that offline conversions only attribute if the click ID survives the form. Where it does not, the target Google is now optimizing toward more consistently is being measured against an incomplete conversion count.
For advertisers running budget-limited Target CPA or Target ROAS campaigns, the number typed into the account is now the operative one. Google will not move it, and its own planning tools should be treated with the caution Google itself advises for the next two weeks.
