Google is rolling out a quiet but significant change to how Target CPA and Target ROAS bidding works, and unlike most Google Ads updates, this one won’t wait for you to opt in.
Starting August 17, 2026, campaigns that have been outperforming their bid targets will start drifting toward those targets instead. If your targets are outdated, your results could change without you touching a single setting.
Here’s exactly what’s changing, who it affects, and what to do before the rollout date.
What's Actually Changing
Right now, many “Limited by budget” campaigns quietly outperform the targets advertisers set for them. For example, if you set a Target CPA of $10 but your daily budget cap has been constraining delivery, your campaign might actually be delivering conversions at $5, twice as efficient as your stated goal.
After August 17, that gap closes. Google will stop letting budget-limited campaigns “borrow” efficiency beyond the target you specified. Campaigns will optimize toward your actual target, regardless of budget constraints.
| Before August 17, 2026 | After August 17, 2026 |
|---|---|
| Budget-limited campaigns can outperform their target | Campaigns optimize strictly toward the stated target |
| A $10 Target CPA might actually deliver $5 CPA | A $10 Target CPA delivers closer to $10 |
| Outdated targets go unnoticed because performance looks fine | Outdated targets directly affect cost and results |
| Increasing budget was risky and unpredictable | Increasing budget becomes safer and more predictable |
Which Campaigns Are Affected
| Affected | Not Affected |
|---|---|
| Search | App campaigns |
| Shopping | Video reach campaigns |
| Performance Max | Video view campaigns |
| Demand Gen (including Target CPC) | Manual CPC |
| Travel | Target Impression Share |
| — | Maximize Conversions / Maximize Conversion Value (no target set) |
| — | Display and Hotel campaigns (already behave this way) |
This applies across Google Ads, Search Ads 360, Display & Video 360, Editor, and the API.
Why Google Is Making This Change
Under the current system, budget-limited campaigns using Target CPA or Target ROAS are allowed to perform more efficiently than the target you set, because the bidding algorithm effectively “borrows” from the target to compensate for a tight budget.
Google’s update removes that borrowing behavior, so campaign performance becomes more consistent and predictable, but only if your targets actually reflect your current goals.
The Real Risk: Stale Targets
Many advertisers set a Target CPA or ROAS months or years ago and never revisited it, because performance always looked fine. That’s exactly the trap this update exposes.
If your real CPA has been quietly beating your stated target, you will likely see costs rise toward that target after August 17, even if nothing else about your account changes.
This also affects multi-channel strategies. If you run Performance Max and Demand Gen together, shifts in how each channel hits its target can change how traffic is split between them.
The Silver Lining: Budget Increases Get Safer
Before this update, raising the daily budget on a budget-constrained campaign was a gamble, efficiency could swing unpredictably because the algorithm was already stretching beyond the target to make the smaller budget work.
After August 17, that unpredictability goes away. If your target is genuinely accurate and there’s demand above your current cap, increasing the budget should let the campaign scale at the stated target rather than drifting away from it.
Google's New Bid Target Adjustment Tool
To help advertisers prepare, Google made a Bid Target Adjustment Tool available starting July 6, 2026, inside Google Ads. It’s designed to help you review and reset targets before the rollout takes effect.
If you’re seeing alerts like “Check your campaign targets” or “Review your portfolio targets” in your account, this is exactly what they’re referring to.
Action Checklist Before August 17
- Audit every campaign with a “Limited by budget” status over the last 12 months.
- Compare target vs. actual performance for each — how far apart are they?
- Decide for each campaign: keep the target as-is, tighten it to match reality, or raise the budget to let the campaign scale at its current target.
- Review Performance Max and Demand Gen together if you run both, since traffic splits may shift.
- Don’t wait until August 17: by then, performance will already be shifting toward whatever target is currently set, whether it’s accurate or not.
What This Means If You're Not Actively Managing Your Account
This update rewards advertisers who treat Google Ads as something to actively manage, not a “set it and forget it” channel. A target set a year ago, with no review since, is now a direct lever on your cost per result, not just a background number.
If you’re not sure whether your campaigns are affected, or you’d rather have someone audit your targets before the rollout, that’s exactly the kind of work we do.
Need Your Google Ads Account Reviewed Before August 17?
At AV Consulting, we manage Google Ads accounts for businesses that don’t have time to track every platform change, but still need results that hold up. Before this update hits, we’ll audit your budget-limited campaigns, compare your targets against real performance, and make sure your account is positioned to scale, not drift.
Get a free Google Ads account review
Don’t let an outdated target quietly increase your cost per lead. Talk to us before August 17.
Source: Google Ads Help
