Google Ads target CPA change 17 August 2026

Your Google Ads campaign is running well. The cost per lead sits well under your target CPA and even so something has changed since 17 August 2026. On that date Google adjusted the way Smart Bidding works on campaigns that are limited by budget. Are your real costs per lead lower than the target you set? Then Google steers more actively towards that target from then on.

The result: your campaign takes more auctions and reaches more people, but the cost per lead moves up towards your own target. A lead at 16 pounds can easily end up at 28 or 30 pounds.

Google does not call it the Bidding and Budgeting Update itself; that name does go round, but it does not come from Google's documentation. The help article is called Changes to target based bid strategies. What Google does do: there are notices in Google Ads for affected advertisers and there is a Bid Target Adjustment Tool to move your target. Google names no date on which those notices started, so no date is given here. Source: Google on the change to target based bid strategies, checked on 25 August 2026.

Note: Google does not change your settings for you. Your budget stays the same and your target stays the same, unless you do something about it.

Target CPA stands for target cost per acquisition. In plain language: the most you want to pay for an enquiry, a lead, an order or a quote request. On every auction Google looks at the chance that somebody clicks and then makes an enquiry, and bids on that basis.

Is your campaign running as limited by budget? Then the bidding system currently only picks the auctions with the highest chance of an enquiry for the lowest cost. That label appears as soon as your daily budget is smaller than what Google considers ideal to hit the target properly. That is why you may now pay 16 or 18 pounds while your target sits at 35: the system is scraping off only the cheapest chances.

After 17 August that changes. Google writes itself that campaigns limited by budget will from then on perform more consistently towards your bidding target, including when you change your budget. After all, you said yourself that 35 pounds per lead is fine. Does the budget have room? Then the system takes the slightly dearer auctions as well. More reach, potentially more leads, but the average cost moves up towards your own target.

For a trade with a small Google Ads budget and Smart Bidding as the bid strategy this is a real change. No reason to panic, but something to check now.

Not every campaign is involved. Google is clear about the scope of the change. The following campaign types fall under it:

• Search campaigns
• Shopping campaigns
• Performance Max
• Demand Gen
• Display, Hotel and Travel campaigns

And then only where the bid strategy is target CPA, target ROAS, or target CPC for Demand Gen. Manual CPC and Target Impression Share do not change. Do you set your bids by hand? Then nothing is the matter.

The combination that needs attention is Smart Bidding plus the status limited by budget. Are you running a Performance Max campaign with target CPA and has the budget been on limited for months? Then you are one of the advertisers who will notice this.

Tip: check in Google Ads which campaigns carry the status limited by budget. You find it in the campaign overview, in the Status column. Is there a target bid strategy on it as well? Then this update is relevant for you.

Say you are a painter and decorator in Leeds. You have been running search campaigns for painting work in the area for a while. Your daily budget is 20 pounds and your target CPA sits at 40 pounds: the amount you are willing to pay for a quote request.

At the moment you pay 19 pounds per lead on average. Which sounds fine, surely? You sit well under your target and get enquiries regularly. Your campaign is on limited by budget, but you do not notice, because the leads come in anyway.

The problem: Google currently picks only the cheapest auctions, people with a high chance of an enquiry for little bid money. That filters a large part of the market out. After 17 August the bidding system looks at slightly dearer auctions as well, towards your target of 40 pounds. The reach grows, potentially more leads, but the cost per lead moves with it. That 19 pounds can end up at 30 or 35.

A landscape gardener with a target of 25 pounds who now pays 12 pounds per lead notices the same. After the update Google steers closer to that 25 pounds: more auctions, perhaps more leads, but a higher average cost.

What is the smart move? That depends on your situation. Are you happy with the current volume and the current price? Then lower your target CPA to an amount closer to the real cost. Do you want more leads and are you willing to pay more per lead? Then a higher budget can make sense, but make sure your target is realistic and matches what you really pay now.

Concretely, step by step. You need no technical knowledge for this, only access to your Google Ads account.

Step 1: check the status of your campaigns

Go to Google Ads and open the campaign overview. Look in the status column for campaigns showing limited by budget and note them down.

Step 2: compare target and reality

Per campaign, look at your target CPA or target ROAS setting, and at the real CPA or ROAS over the last 30 days. You find the real CPA in the columns of your campaign overview; sometimes you have to switch that column on yourself through the columns menu.

Step 3: work out the gap and choose a direction

Is your real CPA far lower than the target you set? Then you will see that mismatch back in your costs after 17 August. You have two options:

• Lower your target CPA to an amount closer to the real cost. If you pay 19 pounds now, set the target at 22 or 25. Then the system does not suddenly steer towards 40 after the update.
• Raise your daily budget if you want to take more leads, but do it together with a realistic check on your target. A higher budget with too high a target does not solve the problem. Before you raise it, check what a daily budget adds up to over a month, because Google changed the pacing of that on 1 June 2026: the sum is in the budget pacing change.

Step 4: use the tool to go through your targets

Google has a tool ready, the Bid Target Adjustment Tool, which analyses your campaign data and indicates whether your targets are realistic for your current budget. Google names no date on which that tool appeared, so we do not add one. You find it through the notice at the top of your account, or on the Campaigns page: click the settings icon, then Bidding, then review campaigns.

Step 5: read Google's notices properly

Have you had notices? Read them properly. Every notice is campaign specific and explains the expected impact of doing nothing. That gives you a guide for the choice you have to make. Make sure your conversions are correct as well, for instance by setting up Google Analytics 4 properly, so that Google bids on the right data.

Tip: look at your cost per conversion this week, because the shift started on 17 August 2026. If your targets are still too high, your budget runs out sooner without you taking more leads. Adjusting it costs you five minutes.

Not sure how to deal with this? As a paid search specialist we check your Google Ads targets and budget status and move them if your cost per lead has climbed, with concrete advice on what to change. No technical knowledge needed, just a clear conversation about what is there now and what is sensible to do.

Alongside your target CPA we look at the things that affect your cost per lead lastingly, such as a higher quality score. That keeps your cost per click lower, after this update as well. There is a second change on the calendar that touches the same accounts: Dynamic Search Ads move to AI Max, with September 2026 for part of it and February 2027 for the phase out, and what to test and when to migrate is in from DSA to AI Max.

Do you want to be sure your targets and budget still hold up? Book a call and we will go through your campaigns together.

What exactly is target CPA?

Target CPA stands for target cost per acquisition: the most you want to pay for an enquiry, a lead or a quote request. On every auction Google looks at the chance that somebody clicks and then makes an enquiry, and tunes the bid to that. So it is not a ceiling per click but a guide amount per result.

Which campaigns are affected?

Search, Shopping, Performance Max, Demand Gen, Display, Hotel and Travel, and then only where there is a smart bid strategy on it and the campaign carries the status limited by budget. If your campaign is not on limited by budget, nothing changes for you. App campaigns and the two video campaign types fall outside it according to Google.

I see no notice in my account. Can I still be affected?

The limited by budget label is the indicator, so without that status there is no cause. Do look properly in the status column of your campaign overview and not only on the notifications page: the status sits on the campaign itself and disappears again as soon as the budget stops pinching.

What do I notice if my cost per enquiry currently sits under my target?

That is exactly the situation this is about. If your real cost per enquiry sat well under your target CPA while your campaign was limited by budget, that price can move towards your target. You get more volume back for it, but if your target CPA was once set generously and never revisited, this is the moment to work that number out again.