PMax Without Shopping? You're Losing Sales

If you’re relying solely on Performance Max, chances are you’re seeing poor results – and wondering why.

Here’s what usually happens:

• You can’t see which search terms are driving sales
• Your budget ends up wasted on low-intent traffic
• You’re flying blind when it comes to optimisation

But pair Performance Max with the right Standard Shopping structure, and everything changes.

The fix is a three-layer system: two Standard Shopping campaigns doing the heavy lifting, with a feed-only Performance Max campaign playing a supporting role. Here’s how each layer is built, why it works in 2026, and how to prove it’s working.

Why Standard Shopping can win the search terms you care about

For years, the received wisdom was simple: Performance Max always outranks Standard Shopping, so if a product sits in both, PMax wins the auction. That is no longer true.

In October 2024, Google removed Performance Max’s automatic priority over Standard Shopping for overlapping products. When the same product is eligible in both a PMax and a Standard Shopping campaign, the two now compete on Ad Rank – bid, feed quality and predicted performance – rather than PMax simply taking the impression. A well-built Standard Shopping campaign with strong product data and a competitive bid can now win those queries back.

That single change is why this structure works. It means you can deliberately steer the queries you care about into a campaign you can actually see and control, instead of handing them to a black box.

The other lever is campaign priority, which still governs which of two Standard Shopping campaigns bids on a shared product. Set one High and one Low, and the High campaign always bids first; the Low campaign only steps in when the High one isn’t bidding (or runs out of budget). That’s how the two Shopping layers below avoid cannibalising each other.

Layer 1: A focused Standard Shopping campaign

Start with an aggressive approach – a low target ROAS (around 40–60%). This lets you capture high-converting search terms by dominating top ad positions.

Set this campaign to High priority. That guarantees it’s first in line for the products and queries you most want to own, and the low target ROAS tells Smart Bidding to bid hard to hold those positions. This is your money layer: your best-margin, best-converting SKUs, backed by clean feed data so your Ad Rank stays competitive against any PMax overlap. If your feed itself is thin, fix that first – see what to put in your Shopping campaigns and this duplicate product feed hack for squeezing more out of the same catalogue.

Layer 2: A catch-all safety net

Add a secondary Standard Shopping campaign with a slightly higher target ROAS. Think of it as a net to scoop up the rest – users who are browsing, comparing, or not yet ready to buy. It’s like retargeting, but native to Shopping.

Set this one to Low priority. Because Layer 1 is High, it always gets first refusal on your priority queries; Layer 2 only picks up everything else – the long tail, the lower-intent browsers, the products you’re not aggressively pushing. The higher target ROAS keeps this layer efficient rather than greedy.

Strip out the noise

To maintain control, you need to cut irrelevant traffic fast. I once excluded over 38,000 non-performing search terms from a single account – in a day. We run hourly negative keyword scripts for a reason. Tight targeting protects your ad spend.

A negative keyword script (there are free ones in the Google Ads scripts library) runs on a schedule, reads the search terms report, and automatically adds zero-converting or off-brief queries as negatives. Run it hourly and the noise never gets a chance to build up. Keep those exclusions in shared negative keyword lists applied across all three campaigns so a term you kill in one can’t leak into another.

Worth knowing: Performance Max is no longer the blind spot it once was. Since March 2025 it has its own search terms report and supports both campaign-level negative keywords (up to 10,000 per campaign) and account-level negative lists. So you can now prune PMax directly, not just fence it off with Shopping.

Where feed-only Performance Max fits

Now that your search traffic is under control, run a feed-only Performance Max campaign in the background. Treat it like a retargeting tool – not your main traffic driver.

“Feed-only” means you create the PMax campaign with just the product feed and no asset group creative – no headlines, images or video for Google to spin into text, display or video placements. Strip the assets back and PMax is left serving Shopping-style ads and dynamic retargeting from your feed, which is exactly the narrow, catalogue-driven role you want it in. Add your own domain to the brand exclusions list so it isn’t spending your budget bidding on people already searching for you.

Because overlapping products now settle on Ad Rank, a lean feed-only PMax won’t steamroll your Standard Shopping layers the way an asset-heavy one might. It fills the gaps and mops up remarketing without stealing the high-intent queries you’ve deliberately parked in Layer 1.

The three-layer Shopping + PMax structure

Layer	Campaign type	Campaign priority	Target ROAS	Role
1	Focused Standard Shopping	High	Low / aggressive (~40–60%)	Win your best-converting, best-margin search terms
2	Catch-all Standard Shopping	Low	Higher / efficiency-focused	Scoop up browsers and the long tail Layer 1 doesn’t chase
3	Feed-only Performance Max	N/A – competes on Ad Rank, not priority	Your account target (protect blended ROAS)	Support and remarketing; fill gaps without cannibalising

You’re not leaving things to chance. You’re telling Google exactly what to prioritise, and where your money goes.

How to tell it’s working

Don’t judge this on a single campaign’s ROAS – judge it on the system. Watch:

• Search-term visibility regained. You should be able to see and act on the queries driving sales again. If Layer 1’s search terms report is full of your priority queries, the structure is doing its job.
• Blended ROAS across all three layers. The point is efficiency for the account, not one hero campaign. Track spend and return together, not in isolation.
• Share of budget by layer. Layer 1 should take the lion’s share of high-intent spend, with PMax a minority supporting slice. If feed-only PMax is quietly eating your budget, tighten its exclusions.

To attribute wins correctly, check which campaign actually served for a converting query in the search terms report – that tells you whether Standard Shopping or PMax earned it. This setup isn’t complicated – but it is smart. And it works because you’re doing what Performance Max can’t on its own: taking control.

If you’re a smaller retailer weighing up whether this is overkill, our small ecom Google Ads strategy covers when to keep it simple, and the same intent-splitting logic powers our two-campaign feeder strategy on the Search side.

FAQ

Does Performance Max still outrank Standard Shopping? No. Since October 2024, Google no longer gives PMax automatic priority over Standard Shopping for overlapping products. The two now compete on Ad Rank, so a well-optimised Standard Shopping campaign with a competitive bid and strong feed can win those queries.

How does campaign priority work across the two Shopping layers? Priority governs which of two Standard Shopping campaigns bids on a shared product. Set your focused campaign to High and your catch-all to Low. The High campaign always bids first; the Low one only steps in when the High campaign isn’t bidding or has exhausted its budget.

What does “feed-only” Performance Max actually mean? It’s a PMax campaign built with only your product feed and no asset group creative. Without headlines, images or video, PMax mainly serves Shopping-style and dynamic remarketing ads, keeping it in a narrow supporting role rather than competing across every placement.

Can I add negative keywords to Performance Max now? Yes. As of 2026, PMax supports campaign-level negative keywords (up to 10,000 per campaign) and account-level negative lists, and it has its own search terms report. You can prune it directly rather than relying on Standard Shopping to fence it off.

How do I know the structure is working? Look at regained search-term visibility, blended ROAS across all three layers, and share of budget by layer. Use the search terms report to see which campaign served a converting query so you can attribute wins to the right layer.

Post inspired by: Artur MacLellan