Is Performance Max Quietly Wasting Your Google Ads Budget?
If you’ve set up Google Ads recently, there’s a good chance Google steered you straight into Performance Max, often called PMax. It’s the default Google pushes hardest for new advertisers, and for good reason from Google’s side: it hands full control of bidding, placement and creative selection to their AI across Search, Shopping, YouTube, Display, Gmail and Maps in one campaign.
For a small business with a tight budget, that’s not automatically a bad thing. But it’s also easy for PMax to quietly burn through spend on channels and clicks that never turn into real enquiries, especially if nobody’s checking what’s actually happening underneath the automation.
Why PMax has been riskier for small budgets
PMax has always come with a trade-off. You give up the keyword-level control you’d get with a standard Search campaign, and in return Google’s algorithm decides where your ads show and who sees them. For accounts with big budgets and years of conversion data, that trade-off often pays off. For a small business spending a few hundred pounds a month, it means less room for the algorithm to learn efficiently, and historically it meant almost no visibility into which searches were actually triggering your ads.
That second part has genuinely improved this year. Google has been rolling out search term visibility and the ability to add negative keywords directly inside PMax, addressing what had been the platform’s biggest complaint since launch. It’s a welcome change, but the visibility still isn’t as granular as a standard Search campaign, and plenty of small business accounts still aren’t set up to make use of it.
Tell-tale signs your PMax campaign is burning cash
- Cost per lead climbing steadily with no obvious cause
- Google Ads reporting conversions that don’t line up with the calls or enquiries you’re actually getting
- Budget spreading thinly across Display and YouTube placements that rarely convert for a local service business
- No one has checked the Search Terms report or Insights tab since the campaign was set up
What a properly set-up small business account should be doing
A handful of things make the biggest difference to whether PMax works for you or against you:
- Call tracking connected properly, so Google Ads knows about real phone enquiries, not just form fills
- Conversion actions tied to genuine business outcomes rather than vague “engagement” goals that Google can hit without producing a single real lead
- Regular negative keyword hygiene, using the search term visibility Google has now made available, rather than leaving the campaign to run untouched
- Audience exclusions where relevant, so acquisition budget isn’t being spent on people who are already customers
- Campaign-level checks using the newer budget pacing and diagnostics tools Google added this year, to catch a campaign that’s “limited by budget” or stuck in an extended learning phase
None of this means PMax is the wrong choice. For plenty of small businesses it works well once it’s set up properly and checked regularly. The problem is usually neglect, not the campaign type itself.
Think your ad spend isn’t working as hard as it should? Get in touch for a free Google Ads audit.
