Google Performance Max Guide: Setup, Signals and Bidding (2026)

Performance Max is a goal-based Google Ads campaign type that lets one campaign reach all Google Ads inventory: YouTube, Display, Search, Discover, Gmail and Maps. You provide conversion goals, creative assets, optional audience signals and search themes, and Google's Smart Bidding decides where and to whom the ads serve in each auction.

This Google Performance Max guide covers the setup decisions that shape what the campaign learns, plus what reporting shows. Facts and limits come from Google Ads Help pages checked in September 2026; confirm labels in your own account.

What Performance Max is and which inventory it covers

According to Google Ads Help ("About Performance Max campaigns"), Performance Max is a goal-based campaign type that accesses all Google Ads inventory from a single campaign. Google's asset group documentation describes the same assets being combined into ads that serve across Google Search, Google Maps, Display, YouTube, Gmail, the Discover feed and Google partner websites.

When you create the campaign, you pick an objective (Sales, Leads, Website traffic, or Local store visits and promotions) or create it without a goal's guidance. From there the campaign relies on Smart Bidding: in each real-time auction, bids are set based on the likelihood of a conversion.

On how it coexists with Search, one rule is enough for this guide: Google Ads Help states that Search campaigns with an exact match keyword are prioritized over Performance Max when a query matches that keyword.

The inputs split roughly like this:

Asset groups: the creative layer

Google Ads Help defines an asset group as a collection of creatives centered on a theme or related to a target audience. Any asset in a group can be combined with any other asset from the same group, so each group should hang together (one product line, one service or one audience) rather than mixing unrelated offers. You can create multiple asset groups per campaign. For retail campaigns connected to Merchant Center, listing groups inside the asset group control which products are eligible.

According to Google Ads Help ("How asset groups work"), the asset counts per asset group are as follows. A dash means that page does not state a value.

The Ad strength indicator in the interface shows whether an asset group has enough assets.

Practical tip: write headlines that stand alone. Because assets are mixed and matched, a headline that only makes sense next to one specific description can produce awkward combinations.

Audience signals are signals, not targeting

Audience signals are optional suggestions that help Google's AI optimize toward your selected goals. Google Ads Help is explicit that Performance Max may show ads to relevant audiences outside your signals when they have a strong likelihood of converting. A signal is a starting hint for the model, not a fence: it will not keep ads away from a group of people.

Signal types listed by Google Ads Help:

• Your data: website visitor lists, app user lists, customer lists and video viewer lists
• Custom segments: keywords, URLs or apps that describe your audience
• Demographics
• Other segments: detailed demographics, life events, affinity and in-market segments

A sensible starting point is data that describes people who have already converted, followed by custom segments built from the terms and sites your buyers use.

Search themes in Performance Max

Search themes let you add the words and phrases customers use to find your offer. According to Google Ads Help ("Use search themes with your Performance Max campaign"):

• You can add up to 50 search themes per asset group.
• They are optional and additive: they add to the queries and placements Performance Max already predicts will perform based on your assets, feeds and landing pages, rather than limiting delivery to them.
• Exclusions and negative keywords still apply.
• Relative to Search campaigns, search themes have the same prioritization as phrase match and broad match keywords.
• Avoid near-duplicates with similar reach (Google's example is "car" and "automobile").

Use search themes for intent the campaign may not infer from your pages and assets, such as a newer product line. They are not a keyword list with match-type control.

Conversion goals and bidding

Performance Max optimizes toward the conversion goals attached to the campaign. Google Ads Help notes that account-default goals are populated automatically at creation and can be removed or supplemented. If those goals include low-value actions, the campaign will optimize for them, which is why goal selection matters more here than in manually managed campaigns.

According to Google Ads Help ("Set your bidding preferences"), the bidding choices are:

• Maximize conversions, with an optional Target CPA
• Maximize conversion value, with an optional Target ROAS, which Google recommends when you track values with your conversions

Two details worth knowing:

1. Targets now hold more closely. Google Ads Help ("Changes to target based bid strategies") says that from August 17, 2026, target-based strategies in Performance Max and several other campaign types perform more consistently toward the target you set, including after budget adjustments. A campaign that was beating its target will trend toward it, so set targets that reflect what you are actually willing to pay.
2. New customer acquisition. You can choose to bid for new customers only. Google Ads Help states this requires an audience segment with at least 1,000 active members in at least one network.

Final URL expansion and brand exclusions at setup

Two settings decide where traffic lands and which branded searches the campaign enters.

Final URL expansion. According to Google Ads Help ("About Final URL expansion in Performance Max"), this setting is turned on by default. It lets the campaign replace your Final URL with a more relevant landing page from the Final URL domain based on the user's search intent. It works alongside text customization, which can generate headlines and descriptions from landing page content. You can:

• Turn it off during setup or later in campaign settings.
• Keep it on but exclude specific URLs, or add rules to exclude URLs.
• Add a page feed, which Google says helps verify those URLs are indexed but does not restrict ads to serve only feed URLs.

Pages that rarely lead to a conversion, such as careers, support, login or legal pages, are the usual candidates for exclusion. An "Expanded Final URL assets" tab in asset reporting shows which assets served with which expanded URLs.

Brand exclusions. Brand exclusions use brand lists applied at campaign level. Google Ads Help ("Apply brand exclusions to Performance Max or Search campaigns") states that for Performance Max they apply only to Search, Shopping and YouTube search inventory, and there is an option to allow Shopping ads on searches that mention excluded brands. Google's Performance Max FAQ adds that brand exclusions can cover misspellings and other variants that negative keywords do not. Whether to exclude your own brand is a judgment call: excluding it keeps Performance Max focused on non-brand demand, and Google advises monitoring how exclusions affect reach and conversions.

Performance Max reporting: what you get and what you don't

Reporting has expanded, but it is still built around outcomes rather than levers.

What you get, per Google Ads Help:

• Channel performance report, under Insights and reports. It has a performance summary, a Channels-to-Goals chart and a channel distribution table, broken out by Google Search, Google Display Network, YouTube, Discover, Maps, Gmail and Search partners, with metrics such as impressions, clicks, conversions, conversion value and cost. Any date range after June 6, 2025 can be viewed.
• Search terms report, listed as "Search terms and landing pages for Performance Max". It shows the search terms that triggered ads along with landing pages and ad format. Data is available starting from March 2023.
• Asset reporting, comparing performance at the level of an individual asset, an asset group, a campaign or several campaigns, including assets created with text customization.

What you don't get, or get only partly:

• No manual bids by keyword, placement or channel; Smart Bidding sets the bid in each auction.
• No way to confine delivery to your audience signals, since Performance Max can serve outside them.
• Store visits and store sales conversions are not available in the search terms report, and in the channel report offline conversions for each store are summed rather than broken out store by store.
• Shopping ads appear in the channel report only when you segment by ads using product data.

When Performance Max fits, and the prerequisites

Google's Performance Max FAQ points to advertisers who want conversions across multiple channels, new customer acquisition, lead generation or retail with store goals, and who judge success on overall results rather than channel-by-channel metrics. It tends to be a weaker fit when you need tight control over individual queries, placements or channels, or when you cannot yet tell which conversions matter to the business.

Conversion tracking quality is the real prerequisite. Before launching, check that:

1. The Google tag is installed and each conversion action fires correctly; Google's getting-started guide walks through the tag and event snippet. For a platform-specific example, see setting up Google Ads conversion tracking on BigCommerce.
2. Primary goals reflect business outcomes, not micro-actions such as page views.
3. Lead advertisers consider enhanced conversions for leads and separate lead stages such as a qualified lead, as Google's FAQ recommends.
4. Conversion values are passed if you plan to use Maximize conversion value or Target ROAS.
5. Account-level choices are right from the start; the Google Ads account setup guide covers the settings that are hard to change later.
6. UTM parameters and click IDs survive redirects so post-click data stays attributable, as explained in link tracking for ad campaigns.

Google Ads Help also notes a learning period after launch but gives no fixed duration, so avoid large changes to goals and targets early on.

Performance Max decides who sees the ad and where it runs; DeepClick works on what happens after the click, helping teams manage the landing experience and post-click optimization.

FAQ

Is Performance Max a replacement for Search campaigns?

Not necessarily. Google Ads Help describes Performance Max as able to complement keyword-based Search campaigns, and exact match keywords in Search campaigns take priority when a query matches them.

Do audience signals limit who sees my ads?

No. Signals are suggestions that guide optimization, and Google states Performance Max may show ads to relevant audiences outside your signals when they are likely to convert.

How many search themes can I add to Performance Max?

Up to 50 per asset group, according to Google Ads Help. They are optional and add to, rather than restrict, the queries the campaign can reach.

Can I stop Performance Max from sending traffic to unrelated pages?

Yes. Final URL expansion is on by default, but you can turn it off, or exclude specific URLs and URL rules, in campaign settings.