Every few months Google Ads announces a change, the paid search corner of the internet catches fire, and roughly four thousand LinkedIn posts appear explaining that this is either nothing or the end of advertising as we know it.
This month's episode is Smart Bidding.
Here is what happened, what Google actually said, and what it means if you are a local business writing a check every month to somebody who runs your ads.
What Google Is Changing
Starting August 17, 2026, Google is changing how Target CPA and Target ROAS bidding behaves in campaigns that are limited by budget.
Right now, a budget-limited campaign often beats its own target. You set a $50 Target CPA. The campaign comes back with $35 leads month after month and you feel like a genius. Everyone is happy. Nobody asks questions.
After the update, Smart Bidding will optimize more closely toward the target you actually set. Meaning if you told it $50, it is going to try to work with $50 rather than politely hiding in the safest corner of the auction and handing you $35.
That is the whole change. That is it. That is the thing that broke the internet.
Why Advertisers Panicked
You can probably see the problem. If a campaign was giving you $35 leads and now aims at $50, that sounds a lot like "your leads are about to get more expensive so Google can make more money."
PPC folks said so out loud. Kirk Williams asked whether the system would "literally choose to be dumber when limited by budget?" which is a genuinely great sentence and also the exact question every advertiser had in a slightly more polite form.
Others worried the change would drag campaigns into lower-quality traffic, or that it was a soft way of telling everyone to raise their budgets.
The concern is fair. It is also, according to Google, mostly a misreading of what the update does.
What Google Actually Said
Ginny Marvin, the Google Ads Liaison, jumped in to clear things up. The clarifications were refreshingly specific:
- Your budgets will not change automatically.
- Your Target CPA and Target ROAS settings will not change automatically.
- A campaign that is already capped by budget will not start spending more. If you want more spend, you still have to go in and raise the budget yourself, like a person.
Her words: "Our advice is not to 'let the system spend more money'… this change won't result in spend changes on a campaign already budget constrained."
On why they are doing it at all, Marvin said: "Performance has often fluctuated unexpectedly… especially with budget changes. That's not been a great experience for advertisers & made it challenging to scale campaigns with confidence."
That last part is the real motive, and it is worth understanding.
The Actual Problem Google Is Trying to Fix
Smart Bidding has historically leaned hard toward playing it safe. When budget is tight, it goes after the auctions it is most confident about and skips the rest. In machine learning terms it favors exploitation over exploration. In plain English, it hides.
Mike Ryan and others have pointed out that this made Smart Bidding needlessly conservative. It chased the sure thing instead of the thing you told it to chase.
That sounds fine until you try to grow. You have a campaign humming along at $35 CPA against a $50 target, so you double the budget expecting roughly double the leads. Instead performance lurches somewhere unpredictable, because the system was never actually optimizing toward $50. It was optimizing toward "do not embarrass myself," and the moment you changed the constraints, the whole shape of the thing changed with it.
Anyone who has scaled a Google Ads campaign has lived this. You raise the budget and the campaign has what can only be described as a personal crisis for two weeks.
The August update is meant to make that behavior consistent. Predictable scaling in exchange for less accidental overperformance. Whether you consider that a fair trade probably depends on how much accidental overperformance you were enjoying.
What This Means If You Are a Local Business
Let us translate this out of ad-platform language.
If your campaigns are not budget limited, this mostly does not apply to you. The change is specifically about campaigns constrained by budget. Plenty of small local accounts are limited by search volume, not money. If Google can only find eleven people a day searching for emergency AC repair in your zip code, budget was never the bottleneck.
If you are budget limited and beating your target, pay attention. This is the group with something to lose. That gap between your $50 target and your $35 actual is the exact thing the update closes. Your spend will not increase, but your cost per lead might drift up toward the number you set months ago and then forgot about.
The fix is not complicated. Google's own recommendation is to look at your current actual performance and decide whether that number should be your target now. If you have been getting $35 leads for six months, your target should probably be $35, not the $50 you guessed at during setup while distracted by something else.
This is one of those rare updates where the correct response is to change a setting to match reality. If nobody touches it, your target is just a stale guess that Google is now going to take seriously.
What to Expect If You Pay an Agency
Here is the part nobody puts in the newsletter.
An update like this creates a very convenient story. If results dip in September, "Google changed Smart Bidding" is an available explanation that requires no evidence and cannot really be argued with by someone who does not run ads for a living.
Sometimes it is even true. But it is also the perfect cover for an account nobody has meaningfully touched since onboarding.
So a few questions worth asking, ideally before mid-August rather than after:
- Which of my campaigns are actually limited by budget? If they cannot answer this in under a minute, they are not in the account much.
- Are any of them beating their targets right now, and by how much? This is the exposure. It is one report.
- Are we resetting targets before August 17, or waiting to see what happens? Both are defensible. Having no opinion is not.
- What is our baseline? Write down current CPA, ROAS, conversion volume, and spend now. Otherwise September becomes a debate about vibes.
A good agency has already emailed you about this. A fine agency answers these questions well when you ask. A bad agency explains that it is complicated and changes the subject to how many impressions you got.
What Nobody Should Do
Do not raise your budget because a blog post implied you should. Google specifically said that is not the advice. Your spend does not change unless you change it.
Do not rebuild your account. This is a bidding behavior adjustment, not a platform rewrite.
Do not panic on August 18. Smart Bidding needs time to settle after any change, and judging performance off a few days of data is how people talk themselves into breaking a campaign that was fine.
Do not ignore it entirely either, which is the actual most common outcome. Most small accounts will sail through this untouched because nobody was watching the targets in the first place.
How We Stay On Top Of This
Honestly, a lot of it is unglamorous.
We read the release notes and the industry coverage, because Google announces these things with dates attached and the dates matter. We watch what experienced practitioners say in the days after an announcement, because the first reaction is usually panic and the useful analysis shows up about seventy-two hours later.
Then we go look at the actual accounts. Which campaigns are budget limited. Which targets are stale. What the current numbers really are, written down, before the change lands, so that afterward there is something to compare against instead of a feeling.
And when a client's numbers move, we can say whether it was the platform, the season, a competitor, the landing page, or us. That last one is the whole point. An update is only a good excuse if nobody was keeping score.
The change lands August 17, 2026. It is small. It is manageable. It is also a decent test of whether anyone is actually driving.
If you are not sure who is driving your account, Miami Web Lab will take a look at it and tell you straight. No jargon, no impression counts, no long pause followed by "well, it's complicated."