Google’s Ads Bidding Change Lands August 17: Here’s What Actually Moves

If you run Google Ads with a Target CPA or Target ROAS strategy, a Google ads bidding change starts rolling out on Monday, August 17, 2026. It only touches campaigns that meet three conditions at once: you’ve set a target, your budget is capping delivery, and your campaign is beating that target right now. If none of that applies to you, nothing changes. If all three apply, your costs are about to move toward the number you actually typed into the account.

What’s Actually Changing (and What Isn’t)

Google’s Ads Product Liaison, Ginny Marvin, laid out the boundary in a podcast interview with Marketing O’Clock host Greg Finn, published on August 12. She put it plainly: the change “only impacts campaigns that are using a target when the budget is limited and the campaign is overachieving.” Miss any one of those three conditions and your account stays exactly as it is.

Say you set a Target CPA of 20 dollars, but your budget cap has been holding your actual cost near 12 dollars. That gap made your campaign look more efficient than the target you set. Starting August 17, Google closes it and lets your cost drift up toward the number you actually chose. Your click and conversion volume can shift as a result, even though you didn’t touch a setting.

Marvin also ruled out a common assumption. If your campaign is missing its target rather than beating it, this update does nothing for you. “It’s really affecting the overachievement, versus not if you’re not overachieving,” she said. The correction runs one direction only: down toward the target you set, never away from a target you’re missing.

You can read Marvin’s full remarks and Finn’s line of questioning in the PPC Land interview writeup on the August 17 bidding change.

Why Ad Group Targets Now Matter

Here’s the part that catches a lot of accounts off guard. If your campaigns use targets set at the ad group level rather than just the campaign level, those targets fall inside the scope of this change too. Marvin confirmed it directly: “whenever you set a target, including at the ad group level, we want advertisers to set targets that actually mean something to their business.”

She added a caution worth taking seriously. Ad group level targets can constrain how Smart Bidding operates, so she recommended you “think deeply about why those are needed at an ad group level if they’re needed” at all. If your account has grown over the years with individual targets tucked inside ad groups, check every one, not just your top-level campaign settings.

Google built a Bid Target Adjustment Tool in July that gives you a few paths forward: keep your target and let delivery drift toward it, lower it to match recent performance, set a custom figure, or drop the target constraint and switch to Maximize Conversions. None of these choices happen automatically. Google won’t change your targets or budget on your behalf.

What You Should Check Before Monday

You don’t need to overhaul your account this week. You need three quick checks. First, find every campaign running Target CPA or Target ROAS that also carries the “Limited by budget” status. That combination is the entire population affected. Second, check whether any ad groups inside those campaigns carry their own separate targets, since those inherit the same exposure. Third, decide whether you want costs to rise toward your stated target, or whether to lower that target now to match what you’ve actually been paying. This kind of review is part of the wider habit of using digital tools deliberately to grow your business instead of leaving them on autopilot.

Whatever you decide, give the account time to settle. Marvin’s own advice was to wait at least one full conversion cycle, maybe two, since any budget change triggers its own adjustment period on top of the rollout. If you manage campaigns without an agency, this is exactly the kind of decision where a second set of eyes helps, especially if your business depends on steady lead flow. If you’d rather have one team handling your ads, your website, and your analytics together, that coordination matters more in weeks like this one, when a change on one channel ripples into everything else you track.

Pair this bidding check with a broader look at how your content performs beyond paid search. Google recently rolled out a way to track how your Instagram, TikTok, and YouTube posts perform inside Google Search, giving you a fuller picture of where your traffic actually comes from before you decide how much more to spend chasing it.

Frequently Asked Questions

Does the August 17 Google Ads bidding change affect every campaign?

No. It only affects Search, Shopping, Performance Max, Demand Gen, and Travel campaigns that use a Target CPA or Target ROAS strategy, are marked “Limited by budget,” and are currently beating their stated target. Campaigns without a budget cap, campaigns missing their targets, and formats like App campaigns or Video campaigns sit outside the change entirely.

Will my costs go up right away on August 17?

Not instantly. Marvin described the rollout as gradual, spreading out over several weeks rather than hitting every account the same day. Even after your campaign is affected, expect an adjustment period before performance settles, so judge results over a full conversion cycle rather than the first few days.

What should I do if I want to keep my current costs stable?

Open the Bid Target Adjustment Tool inside Google Ads and lower your target to match your recent actual cost per acquisition or return on ad spend. Google will not do this for you automatically, and the same advice applies to any targets set at the ad group level, not just the campaign level.

Getting Ready for the Google Ads Bidding Change

This Google ads bidding change comes down to a narrow slice of accounts: budget-capped campaigns running a target that’s currently outperforming it. If that’s not your setup, you can leave your account alone. If it is, spend twenty minutes this week checking your campaign and ad group targets, decide whether you want costs to rise toward your stated numbers or whether to reset those numbers first, and give the account a full conversion cycle before you judge the outcome. A few minutes of review now beats a confusing month of unexplained cost swings later.