If you already run Performance Max against a live product feed, you have probably felt this without naming it. The campaign's reported ROAS looks great, but your bank balance and total order count barely move. Brand exclusions are the single control that most directly fixes that gap.
What brand exclusions actually do in Performance Max
A brand exclusion is an account-level list of brands you do not want Performance Max serving against. When you exclude a brand, Google automatically extends that to its variations and common misspellings, so you are not chasing every typo by hand (Google Ads Help).
The exclusion covers Search, Shopping, and YouTube search inventory. There is one important exception baked into the interface: a checkbox that lets your Shopping ads keep appearing on searches that mention an excluded brand, even while your other formats stop (Google Ads Help).
Account-level brand exclusions for Performance Max have been available since 2024 and cover brand variants and misspellings out of the box (AdNabu). You can point one brand list at multiple campaigns, so you set the policy once and reuse it.
Two jobs matter for an operator. First, excluding your own brand so Performance Max stops taking credit for demand that already exists. Second, excluding competitor brands so you are not paying to appear on searches that almost never convert for you.
Why an operating store loses money without them
Performance Max chases the cheapest conversions it can find, and branded queries are the cheapest of all — the intent is already built. So the machine drifts toward your brand terms, "wins" conversions that were coming anyway through organic and direct, and posts a return figure that looks like genius.
The cost mechanism is blunt. Smec describes it as paying "$1.50 for a click that you could have bought for $0.20" — the same customer, several times the price (smec).
Practitioner analyses put the damage in a consistent range: roughly eight to fifteen percent of Performance Max budget leaking to brand queries in unprotected accounts, and roughly fifteen to thirty percent apparent-ROAS inflation from that absorbed brand traffic (GrowthSpree; ClickTrends). Treat those as field estimates, not laws — but they are directionally where unprotected accounts land.
Say you run a Performance Max campaign at $3,200 a month and it reports a 6.0x return, so $19,200 in tracked revenue. If twelve percent of that spend is quietly buying branded clicks, that is $384 a month paying premium prices for customers who already know you. Worse, the branded conversions inflate the headline: strip out $4,800 of brand-driven revenue that would have arrived free, and your true incremental return is $14,400 ÷ $3,200 = 4.5x, not 6.0x.
That 4.5x-versus-6.0x gap is the whole game. It is the difference between a decision made on real acquisition economics and one made on a number the auction handed you.
The number that actually matters: break-even, not reported ROAS
Reported ROAS ignores product cost, fulfillment, and fees — so a big multiplier can still lose money on thin print-on-demand margins. Your break-even ROAS is simply 1 ÷ contribution margin.
Say you sell a mug for $24 that nets $9 after the base cost, shipping share, and processing fees. That is a 37.5% margin, so break-even ROAS = 1 ÷ 0.375 = 2.67x. Every dollar of ad revenue below 2.67x is a loss on that order, no matter how proud the campaign looks.
Now connect the two ideas. If Performance Max reports 6.0x but the branded slice makes the true figure 4.5x, you are still profitable here — but on a leaner product, or with more brand leak, that inflation is exactly what pushes a "winning" campaign underwater without you seeing it. The cluster's Google Ads economics guide walks the full break-even and tROAS math if you want the deeper version.
How to tell if Performance Max is eating your brand
Do not exclude blind — diagnose first. Performance Max now exposes search terms, so open the search-terms view and look for your own brand name and its variants showing up as converters inside the campaign.
Then check your dedicated brand Search campaign, if you have one. A sudden drop in its impressions while Performance Max spend rises is reallocation, not growth — the two campaigns are trading the same demand.
The honest test is the one no per-campaign report gives you: total business orders against total ad spend, month over month. If Performance Max ROAS climbs while your blended orders stay flat, brand cannibalization is the prime suspect. Our Performance Max playbook covers this diagnosis alongside the other symptoms operators hit.
How to set up brand exclusions, step by step
For an existing campaign, open its settings, scroll to Additional settings, and click Brand exclusions (Google Ads Help). Select or create a brand list, add your brand, and decide whether to tick the "allow Shopping ads on searches that mention excluded brands" option.
For a new campaign, the same control lives under More settings in the Campaign Settings step. Build the brand list once and reuse it across campaigns.
If your brand does not appear in Google's index when you search for it, you can submit a request to have it indexed — practitioners report roughly a four-to-six-week wait for that to process (GrowMyAds). Until then, campaign-level negative keywords are a stopgap for the exact branded terms you can see.
The follow-up most guides skip: a dedicated brand campaign
Excluding your brand from Performance Max does not mean surrendering branded searches — it means moving them somewhere you control the price. The standard fix is a dedicated brand Search campaign (and often a Standard Shopping campaign) to catch that traffic cheaply (Astraloop).
This is not niche behavior. Optmyzr's study of 24,702 Performance Max campaigns found that eighty-two percent of advertisers run Performance Max alongside Shopping or Search rather than in isolation (Optmyzr). Running both does not mean bidding against yourself — Google's auction still charges you only what it takes to beat outside competitors.
The payoff is visibility. Once branded clicks live in their own campaign, you can see their real cost and stop crediting Performance Max for demand it did not create. For the wider set of 2026 Performance Max controls worth auditing, see the Performance Max updates rundown.
What this does to your true per-order profit
Here is the operator's frustration: none of the diagnosis above shows up in a ROAS number. You need to reconcile ad spend against real orders, real product costs, and real fees — across Google Ads and your store at once — to see whether an "improvement" actually reached the bank.
That reconciliation is what PodVector AI is built for. Victor is an AI employee that operates your Google Ads directly and connects to your Shopify store, Meta Ads, Printify, Printful, Gelato, and Klaviyo, then computes true per-order profit from live data — so you can see whether a brand exclusion lifted profit or just moved a number.
Victor is not a dashboard you have to read. Every write action he takes is approval-gated: he flags the brand leak, proposes the exclusion, and waits for your yes before anything executes, then delivers the reporting to your Google Drive. If you would rather hand the whole Shopping and feed operation to specialists instead, our Google Shopping ads agency page covers that route.
FAQs
Do Performance Max brand exclusions block competitor brands too?
Yes. The same brand-list mechanism lets you exclude competitor names, misspellings, and foreign-language variants, not just your own (Google Ads Help). Excluding competitors stops you paying for high-cost searches that rarely convert for a store people were not looking for.
Will brand exclusions hurt my total sales?
Not if you catch the traffic elsewhere. The branded demand does not vanish — it flows to organic listings, direct visits, or a dedicated brand campaign where clicks cost a fraction of what Performance Max was paying. Watch total business orders against total ad spend, not the single campaign's ROAS, to confirm nothing leaked away.
How long do brand exclusions take to work?
The exclusion itself applies quickly once saved. The lag is only when your brand is not yet in Google's index and you have to request indexing — practitioners report a roughly four-to-six-week wait for that (GrowMyAds). Use campaign-level negative keywords in the meantime.
Should I use brand exclusions or negative keywords?
Use both, for different jobs. Brand exclusions are account-level and automatically cover variants and misspellings, which is why they scale better for protecting your whole brand (AdNabu). Campaign-level negatives are the precise, immediate tool for specific terms you can see in the search-terms report.
Does excluding my brand from Performance Max lower its reported ROAS?
Usually yes — and that is the point. When Performance Max stops harvesting cheap branded conversions, its headline number falls to reflect the non-brand acquisition it is actually doing. That lower figure is the honest one, and it is the number you should be setting targets and budgets against.
Is this the same as making Performance Max profitable?
No. Brand exclusions clean up the measurement so you can see real acquisition economics, but profitability still depends on your margin and break-even. A cleaner return figure can be excellent on a healthy margin and a loss on a thin one — always derive your target from break-even math, not from a benchmark blog.