For all those who run Google Ads campaigns and rely on customer lists for better shopper outreach, there is some good news coming your way. Starting in August 2026, Google Ads will begin to automatically label certain customer lists with a ‘customer type’. You do get a say in how your own listings gets classified, but you need to act fast as the window may be available for a limited period only.
Read on to know what’s happening, why it matters and what steps you should take before the update rolls out.
What’s Actually Changing
Anyone who has been running Google Ads might be familiar with a feature called conversion-based customer lists. This can be turned on at the account level to let Google automatically build customer lists using your conversion data. This includes recent purchases, sign-ups, etc., and saves you from the burden of having to upload that information manually. These automated lists reside inside Audience Manager and get updated on their own as new conversions come in. But this is not new and everyone dealing with Google Ads might be aware of this feature.
What’s new is how Google plans to organize these lists going forward. Starting from August 2026, Google Ads will automatically assign a ‘customer type’ to each conversion-based list. The system will decide on its own how to categorize each list based on your conversion data.
This update was first spotted by Bia Camargo, a Google Ads strategist who has a track record of catching new features before Google makes any formal announcement. She shared the update on LinkedIn, where it quickly caught the attention of advertisers and agencies who rely on customer lists for targeting.
Why Google Is Doing This
It is still unclear why Google is making this change. Based on the way customer lists already function in Google Ads, the likely motive is consistency. Currently, advertisers who not organize their lists manually, can end up with overlapping audience data. Automatic labeling aims to sort this issue by giving every conversion-based list a standard classification, whether or not the advertiser ever touches it.
And that’s consistent with a trend that Google has been pursuing for some time now. In its Search, Shopping, and Performance Max ads products, it has slowly been moving towards automation, sometimes leading marketers to default to letting “Google take care of it” unless they opt out. And conversion-based audiences have long been part of that trend.
Why This Matters for Your Campaigns
The impact of customer lists should not be overlooked as a behind-the-scenes process since the customer lists play a direct role in ad targeting.
By agreeing to use conversion-based customer lists, you allow Google to automatically apply them to Smart Bidding and optimized targeting processes. This implies that some of your customer lists might affect your advertising strategy without your knowledge because you did not add them to your campaign. If Google mislabels a list, it could end up shaping your campaign in ways you never intended.
For instance, imagine that you are a clothing brand trying to make a difference between new and returning customers to place bids accordingly. However, if Google’s automatic labeling lumps both groups into one category, you lose the ability to bid differently for each one. You also won’t be able to exclude one group from a campaign meant for the other. It may happen that you do not even realize this error occurred until you explore your account.
That is why it is recommended that advertisers review their settings in advance, before August. Otherwise, you may find it difficult to change an unwanted label once Google applies it.
What You Should Do Before August
The good news is that this doesn’t require any complicated setup. Open your Google Ads account and navigate to Tools > Shared Library > Audience Manager. There you should check your currently active conversion-based customer lists.
Think about what kind of customer segment each list actually represents. Do you have new and returning customers mixed into the same list? What about cart abandoners sitting alongside people who already bought? Now would be a good time to split these segments into distinct lists.
In case you are not using the conversion-based customer lists yet, it is worth considering activating the feature. It can be done in the Account Settings menu and means that Google will create such lists automatically from your conversions.
Advertising agencies managing several client accounts should complete the checklist above individually for each account since their customer lists could vary greatly among different advertisers.
The Bigger Picture
Google Ads has been continuously adding newer and more ‘automatic’ features over the past couple of years, including auto-applied recommendations, AI-driven bidding adjustments and more. Each new feature promises to save the time of advertisers. Although most of these features are really good, it helps to know that automation works best when a human has already done the groundwork. Letting Google fill in the gaps with its own assumptions can sometimes create more of a mess than it solves.
The labeling update might be a small change, but it’s a good reminder to regularly check the back end of your Google Ads account. Settings that seemed fine months ago could shift automatically, affecting your results. And unless you check in periodically, you won’t notice until the damage is already done.
Mark your calendar for August, take twenty minutes to review your Audience Manager, and you’ll be ahead of the curve before the automatic labels take hold.
Frequently Asked Questions
Q1: What is a conversion-based customer list on Google Ads?
These are the customer lists built automatically by Google Ads from your conversion data (e.g., new purchases). Unlike a manually uploaded customer list, these update automatically as new conversions come in.
Q 2: When does this automatic labeling process take effect?
According to the announcement, Google Ads will start this automatic labeling process for conversion-based customer lists in August 2026.
Q 3: Do I need to do anything before August 2026?
Not necessarily, but it’s a good idea. Reviewing your lists now lets you set your own classifications before Google applies its own.
Q 4: Where do I find my customer lists on Google Ads?
In Google Ads, you go to Tools > Shared Library > Audience Manager where you’ll see all the lists you have, including your conversion-based customer lists.
Q 5: What happens if I don’t review my lists before the update?
In that case, Google will start classifying them based on their criteria. In some cases, these will differ significantly from your preferred classification which will influence bidding and targeting accordingly.
Q 6: Does this also affect manually uploaded Customer Match lists?
So far, the update appears to affect only the automatically created conversion-based customer lists, not manually uploaded ones.
Q 7: How do customer list labels affect my ad targeting?
After opting into conversion-based customer lists, they will be automatically used for Smart Bidding and Targeting. Hence, depending on their label, it might affect whom your ads target.
Q 8: Who first reported this update?
Bia Camargo, a Google Ads Strategist, published this announcement on LinkedIn. At the time of writing, there has been no official announcement from Google.
Q 9: Is this feature available to all the Google Ads accounts?
Since conversion-based customer lists are created when opting into them in Account Settings, your account will have to be enabled to use them first.
Q 10: Will this slow down my campaigns or require a learning period?
As of now, there are no confirmed details concerning any learning period associated with labeling. That being said, keep monitoring this in the following weeks.
