Google Ads target CPA change, 17 August 2026: what to do
Google is changing how it delivers budget-limited campaigns that run on Target CPA or Target ROAS. If you set a target a year ago and never touched it again, from 17 August you start paying that number — not the one you pay today.
What actually changes
Until now, a budget-limited campaign on Target CPA could deliver below your target. You set €30, you got conversions at €16, and everyone was happy. From 17 August 2026, Google says plainly that the system will deliver toward the target rather than under it: if you wrote 30, you move toward 30.
The official wording is that these campaigns "will more consistently perform toward the target, including when budget adjustments are made" (source: Google Ads Help, Changes to target-based bid strategies, 2026). The example is Google's own: a campaign with a $10 Target CPA that actually delivers at $5 will move to delivering close to $10.
17 August 2026. The tool for fixing your targets — the Bid Target Adjustment Tool — has been available since 6 July 2026. At the time of writing, that leaves three weeks.
This isn't a penalty and it isn't a price rise. It's a change of logic: the target used to be a ceiling the algorithm was free to beat, and now it's a destination it moves toward. Google reports, from its own testing, an 18% lift in unique converting query categories and a 19% lift in conversions (source: Google, cited by Search Engine Journal, July 2026). Translated: more conversions, at the price you declared.
Who this actually hits
Three things have to be true at once:
- the campaign shows the status "Limited by budget";
- it runs a target-based strategy — Target CPA or Target ROAS;
- it's a Search, Shopping, Performance Max or Demand Gen campaign (source: Google Ads Help, 2026).
If you run Maximise conversions or Maximise conversion value without a target set, this doesn't touch you. And if your budget isn't being fully spent, likewise — the campaign isn't budget-limited, so it's out of scope.
Why an old target is the problem
This is the part that matters. A target isn't a technical setting, it's a price promise you made at some point in the past. And in most accounts that number was entered once, at launch, off an estimate — and nobody has looked at it since.
Take a European online store that set a €25 Target CPA back in 2024, when that seemed reasonable. Since then the campaign has settled and closes at €13. The margin was recalculated on 13. The monthly budget was signed off on 13. From 17 August, the campaign is entitled to climb back toward 25 — and it will, bringing more conversions with it. Volume goes up, cost per conversion nearly doubles. Nothing broke: Google simply started taking seriously the number you wrote and then forgot.
A target you haven't reviewed in a year isn't a setting. It's a number you guessed once — and from 17 August, it's a number you pay.
What we're doing before 17 August
The rule we apply on every new account we open predates this announcement, but it fits it almost too neatly: we set no target for the first two weeks.
On the Search campaign we launched on 25 July 2026 for an Italian client, we started on Maximise conversions with no Target CPA and ad rotation set to "rotate evenly", specifically so the account would collect real data first. The target (around €15) gets set afterwards, on what the account shows, not on what we estimated before a single conversion existed. The reasoning was always mundane, and this change makes it concrete: a target set before you have data is a guess, and from 17 August the guess becomes the invoice.
On the accounts we already run, the job for these few weeks is a single one: put every budget-limited campaign through the comparison between real CPA and written target, and bring the target down wherever the gap is wide. That's not optimisation. It's housekeeping.
What to do, in order
If you manage the account yourself, this is about 30 minutes of work:
- Filter campaigns by "Limited by budget" status. Those are the only ones that matter today.
- Check which of them use Target CPA or Target ROAS. The column is "Bid strategy".
- Put reality next to the target. Real CPA (or ROAS) over the last 30 days, against the number in the settings. That gap is your exposure.
- Lower the target where the campaign beats it comfortably. If you want to keep today's CPA, the target has to look like today's CPA.
- Use the Bid Target Adjustment Tool (live since 6 July 2026) if you have many campaigns to fix.
- Set a reminder for 18 August. The week after is the only moment you find out whether the maths was right.
Three quick questions
Do I need to pause campaigns on 17 August?
No. Nothing stops and nothing resets. The only thing that changes is how close to your target the system delivers. If your target is correct, there's nothing to do.
If I raise the budget, do I avoid this?
No — if anything the logic runs the other way. The change applies precisely to budget-limited campaigns, and Google states that delivery will be more consistent toward the target including when budget adjustments are made. More budget buys more volume at the declared target, not a lower CPA.
What if I do nothing?
Campaigns delivering below target today will climb toward it. You'll get more conversions and a higher cost per conversion. For some businesses that's genuinely good news — if the margin carries it. The problem only appears when nobody checked whether it does.
Want us to look at the account?
We run Google Ads for businesses across Romania and Italy, and this is one of the few checks with a fixed date on the calendar. If you have budget-limited campaigns with a target and you're not sure where you stand, we'll go through it with you before 17 August and tell you honestly whether anything needs changing. Book a meeting.
If the wider context helps, we've also written about how Performance Max works in 2026 and about Meta Ads benchmarks for European e-commerce.
How many campaigns carry a target you've forgotten?
We'll review your Google Ads accounts before 17 August and show you exactly where the written target no longer resembles reality. No pitch, just the numbers.
