Starting August 17, 2026, Google Ads will make "Limited by budget" campaigns using Target CPA or Target ROAS deliver more consistently toward the target you set, even after budget increases, ending the overperformance many campaigns quietly relied on. It's mandatory, non-opt-in, and covers Search, Shopping, Performance Max, Demand Gen, and Travel.

If you manage or oversee paid search, this is a bidding-logic change with a fixed deadline, not a feature you can ignore until it's convenient. Here's what it actually does, what it doesn't do, and what to check this week.

What's Changing on August 17, and Why It's Mandatory

Two terms, defined plainly, because this affects budget owners as much as it affects the person running the account:

• "Limited by budget" is a status Google Ads assigns to a campaign when its budget is the thing holding back spend, not weak bids or thin audience volume. The campaign could spend more and would likely get more results if you raised the budget.

• Target CPA / Target ROAS are Smart Bidding strategies where you tell Google the cost per conversion (CPA) or return on ad spend (ROAS) you want, and the algorithm bids to hit that number.

Here's the mechanic. Right now, some budget-limited campaigns quietly beat their stated target, spending less per conversion (or earning more per dollar) than the number you set, simply because the budget cap kept a mouth from being fully fed. After August 17, Google Ads will push those campaigns to spend up to the full budget while tracking closer to the actual target you set, rather than continuing to coast below it.

Google's own example, in plain terms: if your Target CPA is $10 but the campaign has been achieving $5, expect it to drift toward spending up to the full $10 target instead of continuing to overachieve at $5, unless you change the target yourself. That last clause matters. Per Google Ads Help Center, "Google will not automatically adjust your bidding targets or budgets" (Google Ads Help Center, "Changes to target-based bid strategies," verified Aug 13, 2026). The system changes how it delivers against your number. It does not touch the number for you.

The rollout is mandatory and non-opt-in. There's no toggle to switch off.

Scope:

(Source: Google Ads Help Center, "Changes to target-based bid strategies," support.google.com/google-ads/answer/17061251, verified Aug 13, 2026.)

The One-Directional Mechanic Most Coverage Isn't Stating Clearly

Most write-ups describe this as Google "tightening" target adherence, which makes it sound symmetrical. It isn't.

This only pulls overachieving, budget-limited campaigns toward their stated target. If a campaign is underachieving its target already, CPA running higher than you set, or ROAS running lower, nothing changes for it. Confirmed directly by Ginny Marvin, Google's Ads Product Liaison, in an Aug 12, 2026 podcast interview (Marketing O'Clock, reported by PPC Land, Aug 13, 2026): the system already tries to hit the stated target in underachieving cases, so this update adds no new mechanism there.

That asymmetry is the point worth sitting with this week, while Q4 budget conversations are happening. If a campaign has been overdelivering on a loose target, and you or your agency read that as good performance, the headroom that produced it is closing, not opening. If a campaign has been struggling, this change offers no relief. Nothing new to celebrate on either side, but a real cost shift on one side only.

The Fresh Nuance Most Articles Are Missing: Ad Group-Level Targets Are in Scope Too

Confirmed just one day before this article's research pass, on Aug 12, 2026: ad group-level targets are also in scope, not only campaign-level targets. The account hierarchy hasn't changed. A more specific ad group target still overrides a campaign-level target, exactly as it does today. What's new is that ad group targets now carry the same audit obligation as campaign targets do.

That widens the practical audit surface more than most coverage suggests. Accounts built years ago, or lead-gen accounts that set granular targets at the ad group level rather than one clean campaign-level number, are exactly the accounts where this gets missed. A quick scan of campaign settings won't catch it. If your account structure predates a cleanup, or if your agency inherited it from a previous team, assume there are ad group targets nobody has looked at in a while.

What to Check Before Monday (or Now, If You're Reading This After Aug 17)

Start with the tool Google built for exactly this. The Bid Target Adjustment Tool, live inside Google Ads since July 6, 2026, recommends a target based on recent performance. It recommends. It doesn't decide or apply anything on your behalf (Optmyzr, "Google's August 17 Bidding Change: What Advertisers Need to Do Now," Jul 23, 2026).

For each in-scope campaign or ad group, you have four real paths:

1. Keep the current target, if it genuinely reflects your business goal.

2. Match the target to recent actual performance, using the tool's recommendation.

3. Set a different custom target, if neither the current number nor the tool's suggestion fits.

4. Switch to Maximize Conversions, if you'd rather not manage a fixed target at all.

One blind spot to flag for whoever runs your account review: per Optmyzr's analysis (Jul 23, 2026), campaigns with roughly fewer than 7 conversions won't get a tool recommendation at all. The data's too thin for Google to calculate one. That means smaller campaigns need a human look, because the tool simply won't help.

On timing, be patient with your own read of the results. Google recommends waiting one to two full conversion cycles before judging whether a change worked, which for lead-gen accounts with longer sales cycles or offline conversion imports can mean four to six weeks, not days (Optmyzr, Jul 23, 2026). Also worth flagging to anyone building forecasts right now: Performance Planner outputs may be temporarily unreliable in the days immediately following Aug 17, per Google's own FAQ, as cited by Optmyzr.

Why PPC Practitioners Are Split on This

This isn't a manufactured controversy. Practitioners genuinely disagree, and both sides have a real point.

Joey Bidner, a freelance Google Ads manager, argued in a widely-discussed LinkedIn post (reported via Search Engine Journal, Aug 12, 2026, and Optmyzr's mid-July 2026 coverage) that some of his best-performing accounts intentionally ran with loose targets, low Target ROAS or high Target CPA, specifically to give Smart Bidding room to explore, find new customers, and discover efficiencies over time. From his view, this change removes a deliberate lever, not just a loophole.

Jyll Saskin Gales, a PPC practitioner, pushed back on the backlash in her own LinkedIn post (reported via Search Engine Journal, Aug 12, 2026), arguing something close to: if your target is $10 and you've been achieving $5, just change your target to $5, what's the actual issue here? Her framing treats this as Google closing a real inconsistency, not breaking a strategy.

Both are describing the same mechanic from opposite sides of it: one used the gap as a feature, the other sees no reason the gap should have existed.

For a marketing leader, the useful move isn't picking a side. It's asking your in-house team or agency one specific question this week: which of our budget-limited Target CPA/ROAS campaigns have been quietly overachieving, and was that intentional or just lucky? The answer tells you whether this change costs you anything real.

How to Stay Ahead of Changes Like This

Platform bidding logic changes like this one ship with real deadlines and real, account-specific consequences, but most teams only notice after performance has already moved, usually in a monthly report written weeks later. Continuous, always-on monitoring of paid search account health, the kind that flags target drift and scope changes like this one as they roll out rather than after the fact, is exactly the standing problem an AI marketing intelligence system like DOJO is designed to sit on top of.

FAQ

Does this change affect campaigns that aren't limited by budget? No. Confirmed directly by Google's Ads Product Liaison Ginny Marvin (Aug 12, 2026): nothing changes for unconstrained campaigns.

What happens if my campaign is already missing its Target CPA/ROAS (underperforming)? Nothing changes for it. The update only affects overachieving, budget-limited campaigns. Underachieving campaigns get no new mechanism in either direction.

Do ad group-level targets fall under the August 17 change? Yes, confirmed Aug 12, 2026. The ad-group-over-campaign hierarchy is unchanged, but ad group targets are now in scope for the same review.

Will Google automatically adjust my bidding targets or budgets? No. Per Google's own Help Center: "Google will not automatically adjust your bidding targets or budgets." Every change requires manual action, via the Bid Target Adjustment Tool or direct edits.

How long should I wait before judging whether the change affected my campaign? Google recommends one to two full conversion cycles. Several practitioners note this can mean four to six weeks for lead-gen accounts with longer sales cycles or offline conversion imports.

Sources Cited

• Google Ads Help Center, "Changes to target-based bid strategies", verified Aug 13, 2026

• Google Ads Help Center, "Frequently asked questions about changes to Target-based bid strategies", verified Aug 13, 2026

• PPC Land, "Google puts ad group targets in scope for the August 17 bidding change" (Ginny Marvin, Google Ads Product Liaison), Aug 2026

• Optmyzr, "Google's August 17 Bidding Change: What Advertisers Need to Do Now", Jul 23, 2026

• Search Engine Journal, "Google Is Ending Target Overperformance: What to Fix Before August 17", Aug 2026 (citing Jyll Saskin Gales, Google Ads coach)