Google Ads Changed Target CPA on August 17. Was Google Just Trying to Make More Money?

When I first wrote this post in July, Google was about to change how certain Target CPA and Target ROAS campaigns behave, and it described the change as a way to create more "consistent and predictable" performance. My question then was the one advertisers should still be asking: predictable for whom? The change is now live, the rollout is finished, and we have early data on what it did.

Here is the short answer. Since August 17, 2026, campaigns that use Target CPA or Target ROAS and are limited by budget bid toward the target you entered instead of quietly beating it. Early data shows CPCs rising for those campaigns and falling for campaigns that are not budget-limited. If your targets were looser than your real economics, you are probably paying more per conversion now, and the fix is to reset targets around business outcomes such as cost per qualified lead and cost per customer.

1. What did Google change on August 17, 2026?

Google announced that budget-limited campaigns using Target CPA or Target ROAS "will more consistently perform toward your target, including when you make budget adjustments". Before the change, a campaign marked Limited by budget could perform well ahead of its target because the budget kept it out of many auctions, so the system concentrated on the cheapest conversions it could find.

Google's own example made the point. A campaign with a $10 Target CPA that was delivering a $5 actual CPA would, with no changes, start delivering closer to $10. The advertiser could keep the $10 target or lower it to $5 to hold recent performance. Google said it would not change anyone's targets or budgets automatically. It released a Bid Target Adjustment Tool on July 6 that shows historical performance and lets you apply new targets.

Google's help documentation now says the global rollout was completed on August 27, 2026, and that the new behavior is fully live across all affected accounts.

2. Which campaigns were affected, and which were not?

The change applies to Search, Shopping, Performance Max, and Demand Gen campaigns that meet two conditions: they use a target-based bid strategy such as Target CPA or Target ROAS, and they are marked Limited by budget. ppc.land's coverage also lists Travel and Display, and notes that App, Video reach, and Video view campaigns are excluded. Campaigns that are not budget-constrained did not change their behavior as a result of this update.

The campaigns that felt it most met all three of these conditions:

• They use Target CPA, Target ROAS, or another affected target-based strategy

• They are limited by budget

• Their actual performance was materially better than the target entered in Google Ads

One clarification from Google matters here. As Search Engine Roundtable reported, Google's Ads Liaison, Ginny Marvin, said the update does not change how much a budget-limited campaign spends. Spend only rises if you raise the budget. What changes is what you get for that money: the system bids more aggressively within the same budget, which can mean higher CPCs and a higher cost per conversion.

3. What did advertisers actually see after the change?

The most widely reported early data comes from Mike Ryan of Smarter Ecommerce. Search Engine Land reported his analysis: median CPCs for budget-limited Target ROAS campaigns rose 15.8% after August 17, while CPCs for campaigns that were not budget-limited fell 13%. In euros, budget-limited median CPCs went from €0.38 to €0.44, and non-limited CPCs fell to €0.33.

Impression share shifted too. Before the update, budget-limited campaigns lost about 45% of impression share to rank and about 4% to budget. Afterward, losses to rank fell to about 30% and losses to budget rose to about 33%, and overall median impression share dropped from 40% to 31%. Ryan's reading is that budget-limited campaigns used to win cheaper auctions by bidding conservatively, and that those cheaper clicks are now going to advertisers without budget limits. When PPC consultant Kirk Williams asked whether Google had improved the system for everyone except budget-limited accounts, Search Engine Roundtable's answer in its early data roundup was yes.

Two cautions. This is one firm's analysis, not a controlled study, and the long-term effect on ROAS needs more time because conversions take time to attribute.

4. Was Google just trying to make more money?

This is my view, and it has not changed since July. We cannot know Google's internal motivation, and it would be irresponsible to claim the change exists only to raise ad revenue. But we can look at the incentives. Google earns more when advertisers enter more auctions, bid higher, raise budgets, and give automated systems more freedom to spend. A change that makes budget-limited campaigns bid harder, and that pushes cheaper clicks toward advertisers with bigger budgets, lines up with those incentives. It can produce more conversions for some advertisers and more revenue for Google at the same time.

Google's position is defensible. If you told the system a $300 CPA is acceptable, Google is effectively asking why it should hold delivery to the auctions that produce $60 conversions. From that angle, a campaign beating its target by that much is underdelivering against what you asked for. That argument holds up only if your target reflects real business economics. Many don't.

So my conclusion is the same one I reached before the change. I don't see proof here that Google is trying to drain budgets. I do see another reminder that Google Ads is not an independent financial adviser. Google does not know your true customer acquisition cost unless you give it the data, it does not know which leads are qualified, it does not know whether an extra conversion creates profit, and it does not bear the cost when a target is wrong. That responsibility stays with you.

5. Why is your Target CPA often not a true business target?

In theory, Target CPA should represent what a business can afford to pay for a conversion. In practice, targets are often based on past campaign performance, a Google recommendation, a temporary change made months ago, a number an agency picked, a target meant to encourage volume, or cost per lead instead of cost per qualified lead.

A law firm may tell Google it will pay $300 for a lead, but a lead is not a signed case. A healthcare company may set a $150 Target CPA for appointment requests that include duplicates, people outside the service area, insurance mismatches, and requests that never become appointments. Now that Google bids toward the target in budget-limited campaigns, a weak conversion definition costs more than it used to. The algorithm can deliver exactly what you asked for while hurting the economics of the business.

Here is an example of how that plays out if you take Google's advice to raise a budget-limited campaign's budget. Before, the campaign spends $6,000 and gets 100 leads ($60 per lead), 20 qualified leads ($300 per qualified lead), and 5 customers ($1,200 per customer). After, it spends $18,000 and gets 150 leads ($120 per lead), 22 qualified leads (about $818 per qualified lead), and still 5 customers ($3,600 per customer). Google Ads reports 50 more conversions. The business gained no customers, and acquisition cost tripled. That is why you cannot judge this change by Google's reported CPA alone.

6. Why does marginal CPA matter more than average CPA now?

Here is a second example. A campaign spends $10,000 and gets 100 conversions, an average CPA of $100. You raise spend to $15,000 and get 120 conversions. The new average CPA is $125, which may not look alarming. But the extra $5,000 bought only 20 extra conversions, so the marginal CPA on that new spend was $250.

That is the number you need when deciding whether to keep scaling. Since August 17, budget-limited campaigns can reach past the efficient core they used to concentrate on, and averages can hide that. The same logic applies to Target ROAS. A campaign with a 300% target that was delivering 600% will now operate closer to 300%. For a business with healthy margins, that may be a perfectly good trade if the extra volume adds profit. For a business with thin margins, high return rates, or unreliable revenue tracking, it may not be. The question is whether the incremental spend produced enough incremental profit.

7. What should you do now if your campaigns were limited by budget?

If you haven't reviewed your affected campaigns yet, do it now. Use the Bid Target Adjustment Tool as a starting point, and check its suggestions against your own economics. Here is the checklist I would work through:

• Find every campaign that uses Target CPA or Target ROAS and has been Limited by budget

• Compare performance before the change with performance after the rollout finished, leaving out the August 17 to 27 rollout window

• Look at CPC, impression share lost to rank and to budget, conversion volume, and actual CPA or ROAS against target

• Go past Google's numbers to cost per qualified lead, cost per customer, and marginal return

• Read the search terms for new, weaker queries

• Audit which conversion actions count in bidding, and remove page views, short calls, duplicate forms, and secondary actions set as primary

• Import downstream stages such as qualified lead, appointment, or closed sale

On that last point, Google now offers journey-aware bidding in beta for Search campaigns using Target CPA or Maximize conversions, which can learn from every stage of the lead-to-sale journey you import. Automated bidding can only optimize toward the signals it receives, so better downstream data is the most durable fix.

8. Should you lower your target or raise your budget?

Lower the target? Possibly leaning toward probably, if you want to hold the efficiency you had. If a campaign had a $300 Target CPA but consistently delivered qualified conversions at $100, and $100 is what your economics support, a lower target is reasonable. Just don't set it to last week's CPA. Account for normal variability, conversion lag, seasonality, recent budget or tracking changes, and whether the reported conversions are qualified. Google's guidance on Smart Bidding target adjustments says the bidder starts optimizing to a new target within minutes but recommends waiting one to two conversion cycles before assessing performance. For high-spend or volatile accounts, I would base the decision on business performance and enough history, not on a platform recommendation.

Raise the budget? Not just because Google says the campaign is limited. "Limited by budget" means Google believes the campaign could spend more, which is different from the campaign being underfunded for your business. A budget increase makes sense when the campaign produces profitable customers, the extra conversions stay qualified, your team can handle more volume, and margins support the acquisition cost. It is a poor decision when bidding optimizes toward weak conversions, lead quality is slipping, you don't know your true acquisition cost, or branded demand is being mistaken for growth. Mike Ryan's options in the Search Engine Land piece line up with this: accept reduced reach, move targets closer to historical performance, raise budgets where the economics support it, or reconsider the bid strategy.

9. What is my bottom line now that the change is live?

Google is right that targets should mean something and that campaigns should work toward them. Advertisers are right to question a change that, by the early data, made budget-limited campaigns less efficient while benefiting Google. Both can be true. Google changed how it interprets the number you entered. Make sure that number means what you think it means.

For the other big Google Ads changes this year, including the AI Max upgrade and the Dynamic Search Ads timeline, see what is different in Google Ads for 2026. To check your own account, start with my Google Ads audit checklist for 2026 or the shorter founder's self-audit for whether your Google Ads account is actually healthy. If you'd like a second set of eyes, here is how I handle Google Ads and PPC campaign management, or you can book a free 30-minute introductory call here.

Dr. Linda Orr, PhD, is the founder of Orr Consulting, a fractional CMO and marketing analytics practice serving brands from $5M to $500M in revenue. She built Upwork's first enterprise marketing mix model, covering an $88M annual media portfolio, and spent about 20 years as a marketing professor before moving fully into consulting.