Knowledge base
How much of my Performance Max spend goes to Display and YouTube instead of Search?
There is no universal number. Google's channel-level breakdown in your own account is the only honest answer.
There is no reliable industry-average figure here, and any guide that gives you one is fabricating it. The split depends heavily on your industry, creative assets, audience signals, and bid strategy, and it can shift over time inside the same account without you changing anything.
The real answer lives in your own account's channel-level breakdown, which Google has added to Performance Max reporting over time. Open it, look at the actual Search-versus-Display-versus-YouTube split for your account, and treat that as the only number worth acting on.
If you cannot find a channel breakdown in your account, that is itself useful information: it means you are running a fully black-box campaign with no visibility into where the money is going, which is the point at which measurement, not automation, becomes the gap.