Google Smart Bidding Changes: What Happens to Target CPA and ROAS?
Google is changing Smart Bidding from August 17, 2026. Here is what Target CPA and Target ROAS advertisers need to know before the rollout begins.
Google has scheduled Smart Bidding changes to begin rolling out on August 17, 2026, and they are already generating serious debate inside the PPC community. Advertisers running Target CPA or Target ROAS strategies are asking whether their setups will keep working as expected, or whether years of bidding best practices need to be revisited. Search Engine Land is hosting an SMX Now webinar on August 19 at 1PM EST to put the changes in historical context and help advertisers prepare before the early rollout phase.
What happened
| Detail | Fact |
|---|---|
| Rollout start date | August 17, 2026 |
| Bidding strategies affected | Target CPA and Target ROAS |
| SMX Now webinar date | August 19, 2026 at 1PM EST |
| Hosted by | Search Engine Land |
Google is changing how its Smart Bidding system works, with the rollout set to begin August 17. Smart Bidding is Google’s suite of automated auction-time bid strategies, and Target CPA (cost per acquisition) and Target ROAS (return on ad spend) are its two most widely used options. The changes have prompted more debate in the PPC industry than almost anything in recent years, according to Search Engine Land.
The specifics of exactly what is changing under the hood have not been fully disclosed by Google, but the PPC community’s concern is that the algorithms governing how bids are set will behave differently than advertisers have come to rely on.
Why it matters
Target CPA and Target ROAS are not edge-case settings. They are the default recommended strategies for the majority of Google Ads campaigns, from local service businesses to large e-commerce accounts. If the underlying behaviour shifts, accounts that have been tuned around historical performance data could see unexpected results without any change to their settings.
Experienced PPC managers quoted in the SMX Now preview argue this is not unprecedented. Google has changed how automated bidding works before without formally retiring the strategy names, meaning advertisers sometimes only noticed the shift in their performance data weeks later. That history is exactly what the August 19 webinar aims to document and learn from.
For businesses running performance advertising at scale, the practical risk is straightforward: if your target settings no longer drive the algorithm toward the same outcomes, your CPA could rise or your ROAS could drop before you even know to look.
What does this mean for your Google Ads account?
The honest answer right now is: it depends on how your campaigns are set up and how much margin you have built in. Accounts with aggressive targets, thin margins, or heavy dependence on automated rules are the most exposed. Accounts that already run frequent audits and keep conversion tracking clean are better positioned to catch drift early.
The SMX Now session is framed around historical context rather than panic, which is a useful framing. The broader point is that automated platforms change constantly, and advertisers who understand the pattern tend to adapt faster than those waiting for Google to explain itself. You can browse our full AI and digital marketing news coverage for related updates as more detail emerges from the rollout.
Our take
The lack of specifics from Google is the real problem here. “We’re changing Smart Bidding” without a clear technical explanation of what is actually different forces advertisers to treat every performance fluctuation after August 17 as a potential symptom of the change rather than normal variance. That’s a bad position to manage accounts from.
The historical framing the SMX Now webinar is promising is genuinely useful. Google has done this before: the shift from manual to enhanced CPC, the changes to how Target ROAS handled budget pacing, the quiet deprecation of average position as a meaningful signal. Each time, the advertisers who came out ahead were the ones who understood what the algorithm was actually optimizing for, not just what the label said.
Our advice: do not wait for August 17 to start looking at your accounts. If you work with an agency or are considering one, now is the right time to ask pointed questions about how your bidding strategies are monitored and adjusted.
What to do about it
- Audit your current Target CPA and Target ROAS targets against actual recent performance to establish a baseline before August 17.
- Check that conversion tracking is accurate and complete so you can trust the data you use to judge any post-rollout changes.
- Register for the SMX Now webinar on August 19 at 1PM EST to hear experienced PPC professionals discuss what the historical parallels suggest.
- Set up performance alerts in Google Ads for key campaigns so you catch significant CPA or ROAS shifts within days, not weeks.
- If your account relies heavily on automation, speak to whoever manages your Google Ads strategy about contingency targets before the rollout begins.
The advertisers most likely to feel no pain are the ones who know exactly why their accounts are performing today, not just that they are.
Frequently asked questions
When do Google's Smart Bidding changes start rolling out?
Google's Smart Bidding changes are scheduled to begin rolling out on August 17, 2026.
Will Target CPA and Target ROAS still work after the Google Smart Bidding update?
The strategies themselves are not being retired, but PPC professionals are concerned that the underlying algorithm behaviour will change in ways that affect performance, even if the settings look the same.
What is the SMX Now webinar about the Google bidding changes?
Search Engine Land is hosting an SMX Now webinar on August 19, 2026 at 1PM EST that covers the Smart Bidding changes in historical context, explaining how similar transitions have happened before and how advertisers adapted.
What should advertisers do before the Google Smart Bidding rollout?
Advertisers should audit their current Target CPA and Target ROAS targets against recent performance data, verify conversion tracking accuracy, and set up alerts to catch any performance changes quickly after August 17.
