The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →If a Search campaign marked Limited by budget uses Target CPA or Target ROAS, check its goals, conversion data, target and other performance drivers before changing bids or budget. Google updated how these target-based strategies deliver toward set targets on August 17, 2026, with the global rollout complete August 27. The change applies to that specific campaign group—not every Google Ads campaign or Google Search’s organic rankings—and Google says it does not automatically change advertisers’ targets or budgets.
First, identify whether the update applies to your campaign
Google describes the update as affecting Search campaigns marked Limited by budget that use target-based bidding, including Target CPA and Target ROAS. Start with that group rather than assuming a change in performance across the account was caused by the update. See Google’s explanation of changes to target-based bid strategies and its troubleshooting guidance for Search campaign fluctuations.
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Google’s example describes a budget-constrained campaign with a $10 Target CPA that had recently achieved a $5 CPA moving closer to its stated $10 target. That is an illustration of the system’s behavior, not a measured outcome or a forecast for your account. Whether a CPA closer to the target is acceptable depends on the campaign’s acquisition economics.
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- Make an affected-campaign list. In Google Ads, filter Search campaigns by the Limited by budget status, then identify those using Target CPA or Target ROAS. Record each campaign’s bid strategy, target, budget, status and relevant change dates. This establishes whether the campaign fits the update’s described scope.
- Verify the goal being optimized. Check the campaign’s selected conversion goals and conversion values. For Target CPA, assess cost per conversion alongside conversion volume and the intended cost of acquiring a customer or lead. For Target ROAS, review conversion value and realized ROAS against the value and margin assumptions behind the target. A bidding metric is useful only if its underlying conversions and values still represent meaningful business outcomes.
- Compare the target with mature results and business needs. Review recent performance over a period that has had time to accumulate conversions, then use Google’s Bid Target Adjustment Tool as an input to target review. Google says no target change is required if the current target still reflects the business objective. If the goal is to maintain recent performance, a target near that mature level may be appropriate; a custom target may instead reflect profitability or lead-quality requirements. The tool cannot determine what is profitable for your business.
- Check measurement and conversion delay. Confirm that conversion actions, values, attribution and tracking are working as intended. Recent date ranges may be incomplete when conversions take time to arrive, so an apparent fall in conversion volume or rise in CPA may change as delayed conversions are recorded. Google lists tracking setup and conversion delay among common causes of performance fluctuations in its Search campaign troubleshooting guide.
- Review other changes and delivery constraints. Look at change history for edits to bids, bid adjustments, budgets, keywords, audiences, demographics, ad schedules and other campaign settings. Also check targeting breadth or overlap, policy and ad-review status, ad quality, auction dynamics and Search Lost impression share (rank). Google recommends using Explanations for significant changes; use Ad Preview and Diagnosis when ads are not serving.
- Change one thing deliberately, then allow results to mature. After a Smart Bidding change, Google advises waiting at least one conversion cycle before evaluating its effect. A conversion cycle depends on how long conversions take in your account; a fixed one- or two-week waiting period is not a reliable substitute unless your own delay data supports it. See Google’s guidance on evaluating Smart Bidding performance.
Choose a response that fits the campaign’s objective
Compare the desired CPA or ROAS with recent mature performance, conversion volume, lead quality or profit, the budget constraint and the volatility your business can tolerate. Do not select a target solely because it matches a short reporting window or because a platform recommendation is available.
#1 Best Overall
| Option | When it may fit | Trade-off to consider |
|---|---|---|
| Keep the current target | The target still represents the outcome the business wants. | Recent results may move closer to the stated target rather than staying at a better-than-target level. |
| Set a target near recent performance | The aim is to maintain a recent level that is supported by sufficiently mature data. | A short or incomplete period may not be a sound basis for a new target; use the Bid Target Adjustment Tool as an input, not a profitability decision. |
| Set a custom target | Profitability, lead quality or another business requirement calls for a target different from the recent average. | That target reflects the business’s chosen constraint, not necessarily the level recent campaign results have achieved. |
| Change bidding strategy | The campaign’s objective or willingness to use a target has changed. | Google says Maximize Conversions and Maximize Conversion Value seek to spend the full budget without a target, so actual CPA or ROAS can fluctuate as budgets change. |
| Increase budget | There is a reason to pursue more volume while retaining an aligned target. | More budget does not guarantee a particular result; monitor performance over conversion cycles. |
Google says advertisers can increase budgets to capture more volume at the stated target, but that is a choice to assess against the account’s goals—not a required response to the update. Its guidance also states that it will not automatically adjust advertisers’ bidding targets or budgets.
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Google’s Search troubleshooting guidance groups fluctuations around recent settings changes, conversion tracking and delay, bids and targets, budget, ad quality, targeting and overlap, policy or review, other account issues, auction dynamics, and lost impression share. Compare date ranges of equal length and use Explanations to investigate large shifts. Search Lost impression share (rank) can help show when ads were not shown because of Ad Rank.
Rank #2
- For Target CPA: focus on cost per conversion and conversion volume in relation to the acquisition goal; CPC or impressions alone do not establish whether the campaign is meeting that goal.
- For Target ROAS: examine conversion value and realized ROAS, while checking that tracking and assigned values remain credible.
- For recent periods: account for conversion delay before treating recorded conversions as final.
Google’s guidance notes that campaign performance can vary. A change after the August update does not by itself establish that the update caused it; an account-specific diagnosis depends on campaign settings, change history, measurement, conversion timing, budget and business outcomes.
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