Google's ads liaison used a podcast interview released on August 12, 2026 to draw the narrowest boundary yet around the bidding change landing on Monday, and to confirm that targets entered at ad group level sit inside it.

Five days before the rollout begins, the argument over the August 17 bidding target change has narrowed to a question of who is actually affected. On August 12, 2026, Marketing O'Clock published a special early release interview with Ginny Marvin, Ads Product Liaison at Google, recorded by host Greg Finn and posted ahead of the show's regular weekly episode. The video ran seventeen minutes and forty-nine seconds and had drawn 194 views, four likes and two comments at the time of capture, on a channel carrying 10,700 subscribers.

Finn opened by naming the problem rather than the mechanics. "why is this the most confusing update from Google Ads that I've ever seen in say 20 years of doing this?", he asked. Marvin did not dispute the premise.

A slice of the bidding universe

Her answer began with scope. "let me if I can just kind of break it down. I think maybe um because we're looking at the whole bidding universe and this is affecting just a slice of it", Marvin said. That slice has three conditions attached to it, and all three must hold at once.

According to Marvin, the update "only impacts campaigns that are using a target when the budget is limited and the campaign is overachieving." A campaign using Target CPA or Target ROAS without a binding budget cap is outside it. A budget-limited campaign delivering at or worse than its stated figure is outside it. Only the intersection, a campaign carrying a target, constrained by budget, and beating that target, moves.

Marvin gave a reason for that shape, and the reason is symmetry rather than revenue. Budget-limited campaigns are singled out, she said, because the system "already works this way when campaigns using a target are not limited by budget." The stated purpose, in her framing, is to "standardize bidding behavior whenever you set a target", regardless of whether the campaign is budget constrained.

The second stated purpose concerns what happens when advertisers touch a budget. Marvin described the prior behaviour as producing "a lot of unexpected unpredictable volatility" as a campaign moved from the target it was achieving toward the target actually entered in the account. "That caused a lot of confusion, frustration. People didn't know um what they should be doing when changing budgets", she said. After the change, "going forward, your target is a clear representation of your business goals."

Finn restated the mechanic in operational terms: budget-limited campaigns had been overperforming because of the budget discrepancy, scaling had produced fluctuations, and scaling would now proceed, in his words, in a more true fashion. Marvin agreed, and located the reason in the target itself. "the target will be um the control that is reliably used just as it is when campaigns are not limited by budget", she said, adding that "the target will be the only lever for efficiency when campaigns are limited by budget."

That last formulation matches the language Google used a week earlier. PPC Land recorded on August 5 how a question-and-answer post from Marvin stated that in budget-constrained campaigns the target becomes the efficiency lever, and that campaigns left untouched may enter different auctions than they previously competed in.

Nothing moves for unconstrained campaigns

Finn pressed for a binary answer on the population most likely to be worrying unnecessarily.

"To be completely blunt with you, is anything at all changing for non-limited bybudget campaigns?", he asked.

"No", Marvin replied.

She repeated the point later in the interview when handling a submitted question about whether advertisers running comfortably needed to reset campaign targets to a proven historical CPA. Her answer was that a campaign performing to its intended goals "probably don't need to make changes", and that the update "should not impact anything that you're doing in terms of optimizing for those campaigns that are not limited by budget and using a target."

Finn treated that as the headline finding of the exchange. "the fact that non-limited by budget is not changing is the biggest deal", he said.

The denial is not new in substance. PPC Land documented on July 17, 2026 how Marvin, replying inside a LinkedIn comment thread, rejected the claim that the change reaches unconstrained campaigns on the same grounds. What the August 12 interview adds is the unqualified single-word form, delivered to a direct question rather than folded into a longer reply.

No help in the other direction

The narrower finding cuts against advertisers hoping the recalibration works both ways.

Finn put a concrete case: a Target CPA of 100 dollars with conversions arriving at 125 dollars. Would the change assist a campaign failing its target, limited by budget or otherwise?

"Yeah. No, it won't", Marvin answered. The system already attempts to achieve the stated target in those cases, she said, and the update "is really affecting the overachievement um versus not if you're not overachieving."

That answer closes a symmetry some practitioners had assumed. A campaign whose actual CPA sits above its stated target receives no new mechanism on August 17. The correction runs in one direction only: campaigns delivering below their stated cost target move up toward it, and campaigns delivering above it stay where they are.

Ad group targets enter the picture

The most operationally consequential passage of the interview concerns a level of the account hierarchy that earlier coverage of the change had largely left aside.

Finn asked whether a target set at ad group level, inside a campaign carrying the Limited by budget status, also requires attention. Marvin confirmed it does. "whenever you set a target including at the ad group level um yeah we want advertisers to set targets that actually mean something to their business and again so we can accurately um and appropriately act on those", she said.

Asked whether more specific ad group targets continue to supersede a campaign target, Marvin said the hierarchy is unchanged: "Yes there's no change to um that behavior."

She attached a caution that stands apart from the August 17 change itself. "when you're setting is just be cognizant of setting uh ad group level targets. It can have constraints on smart bidding", she said, adding: "think deeply about why those are needed at an ad group level if they're needed."

The measurement point that followed matters for anyone reading performance after the rollout. According to Marvin, evaluation rests on average target performance, "because that takes into account your ad group settings, any bid adjustments, value rules, all of that uh target changes."

That instruction has a practical edge. An account holder reviewing a single campaign-level target figure while ad group targets, bid adjustments and value rules pull in different directions is not looking at the number the bidding system is working from.

The alternative to carrying a target

Finn asked why the recommendation for budget-limited campaigns is not simply a move to Maximize conversions or Maximize conversion value instead of an adjusted target.

Marvin declined to name a single answer. Maximize conversions and Maximize conversion value "are designed for when you are when you have a fixed budget", she said, while "our recommendation has always been when you're using a target to not have a capped budget and really to give the system the flexibility it needs to find um the most conversions most conversion value for you at your target."

Advertisers without clear targets, or operating on a genuinely fixed budget, could find those strategies a good option, according to Marvin. Advertisers wanting to hold the performance their campaigns currently deliver can instead move the stated target to the actual figure, provided the review covers at least a full conversion cycle. "there's not just one method of um of response that we would recommend", she said.

Finn separated his own view from hers before offering it, saying the words were his and not Marvin's. "if you do plan on trying to drive more volume in a consistent fashion, you should probably be on a target", he said.

Those paths track the options built into the interface tool Google shipped in July. PPC Land set out the six week preparation window and the choices inside the Bid Target Adjustment Tool when it became available on July 6, 2026: keep the target and let delivery drift toward it, lower it to match recent performance, set a custom figure, or drop the target constraint entirely.

The recalibration window does not disappear

Marvin was explicit that August 17 does not deliver stability on its own.

"There still is going to be um you adjustment periods", she said. "So it's not like there's no change you know when you make a budget change there will be some fluctuation and adjustment period. it just should be more stable than it's been in the past, more predictable than in the past."

She also flagged that advertisers acting before the deadline inherit the same effect. "if you're making changes now, you should also expect that recalibration and um adjustment period", Marvin said, recommending that performance be left to settle for at least a conversion cycle or two and pointing to the bid strategy report as the place to establish what that cycle is.

Her closing framing was about account practice rather than platform mechanics. The change, she said, "hopefully will help restart conversations about um how bidding works, how to think about targets, what the business goals of your targets actually are."

Marvin twice confirmed the rollout is gradual. The update "will start rolling out August 17th", she said, and later: "that's going to be rolling out starting August 17th. I just want to make that clear also."

The record leading to Monday

The change was first disclosed on June 15, 2026, inside a three-part package covering an expansion of Smart BiddingExploration to Performance Max and Shopping campaigns, a promotion mode beta, and the bidding target optimisation change itself. PPC Land's account of what actually changed in that package recorded the platform coverage: Google Ads, Search Ads 360, Display and Video 360, Google Ads Editor, and the Google Ads API.

A parallel interface change ran through the same month. In June 2026, Google restored Target CPA and Target ROAS as standalone bidding strategy labels, splitting them out of the Maximize conversions wrappers without altering the underlying logic.

Notification emails and revised Help Center documentation followed on July 2, 2026, covered alongside a practitioner walkthrough of the arithmetic in reporting on the notification wave. On July 14, 2026, a Display and Video 360 announcement extended the identical effective date to Demand Gen line items running Target CPA, Target ROAS or Target CPC.

Criticism arrived in between. PPC Land documented on July 15, 2026 how a freelance Google Ads manager's post stating he had never been more frustrated by a Google Ads update gathered 71 reactions and 27 comments.

Formats inside the change are Search, Shopping, Performance Max, Demand Gen and Travel campaigns carrying the Limited by budget status while running a target-based strategy. Hotel and Display campaigns already operate under the new logic. App campaigns, Video reach campaigns and Video view campaigns sit outside it.

Why this matters for marketers

The interview does not move the effective date, the mechanics or the exposure. What it moves is the boundary, and the boundary is where agency time gets spent in the five working days before Monday.

Three populations now have clear standing. Campaigns without a budget constraint require nothing, on Marvin's flat answer. Campaigns missing their targets receive nothing. Campaigns that are budget-limited, carrying a target and beating it hold the entire adjustment, and the size of the movement scales with the size of the gap between the figure typed into the account and the figure actually delivered.

The ad group confirmation is the addition with the longest tail. Accounts built with granular ad group targets, a structure common in lead generation and in older Search builds, carry more surfaces to audit than a campaign-level review would surface, and Marvin's warning that ad group targets can constrain smart bidding sits uneasily alongside their persistence in mature accounts. Nothing in the interview suggests those targets are automatically adjusted; Google has stated throughout that it will not alter bidding targets or budgets on an advertiser's behalf.

Timing remains the unresolved variable. Marvin's guidance to allow a conversion cycle or two before reading results, combined with a rollout described as gradual rather than instantaneous, pushes the first credible performance signal into September. That lands close to the point at which fourth-quarter budgets are usually committed, roughly ten weeks after the rollout begins. Whether the recalibration is legible before those commitments are made is the question the interview leaves open.

Timeline

Summary

Who: Ginny Marvin, Ads Product Liaison at Google, interviewed by Greg Finn, host of the Marketing O'Clock podcast. The audience is advertisers and agencies running budget-limited campaigns on Target CPA or Target ROAS, including those with targets set at ad group level.

What: Marvin confirmed the August 17 bidding target change applies only to campaigns that carry a target, are limited by budget and are overachieving that target; stated that nothing changes for campaigns not limited by budget; ruled out any benefit for campaigns missing their targets; confirmed that ad group level targets fall inside the change while the ad group over campaign hierarchy is unaltered; and said budget changes will still trigger an adjustment period after the rollout.

When: The interview was published on August 12, 2026, five days before the change begins rolling out on Monday, August 17, 2026. The change was first disclosed on June 15, 2026, with notification emails on July 2 and the Bid Target Adjustment Tool on July 6.

Where: The Marketing O'Clock YouTube channel, released early as a standalone segment ahead of the show's weekly episode. The underlying change applies across Google Ads, Search Ads 360, Display and Video 360, Google Ads Editor and the Google Ads API.

Why: Google states the objective is uniform bidding behaviour whenever a target is set, removing the volatility that budget-limited campaigns exhibited when budgets were adjusted. The interview narrows the affected population and, by placing ad group targets inside it, widens the audit surface inside accounts that use granular target settings.