Google Shopping vs Performance Max: what to choose when?

If you sell products through Google Ads, you will inevitably face a crucial strategic question: should you choose Google Shopping, Performance Max (PMax), or a combination of both? The answer is rarely straightforward and depends on your goals, budget, campaign maturity, and the amount of data Google has already collected about your products. In this article, we explain the differences, discuss when each campaign type works best, and provide concrete guidance to help you make the right choice.

What is Google Shopping and how does it work?

Google Shopping is a campaign type that displays product advertisements on the Google Search Network, primarily in the Shopping tab and at the top of regular search results. You upload a product feed via Google Merchant Center, set bids at the product or product group level, and Google matches your products to relevant search queries. Ads include a product image, title, price, and your brand name.

Google Shopping gives advertisers a high degree of control. You can determine exactly which products to advertise, how much you bid per product group, which negative keywords to exclude, and which campaign priorities to set. This makes Shopping particularly suitable for situations where you want to maintain tight control over your campaigns.

The strength of Google Shopping lies in its transparency. Through the search term report, you can see exactly which queries triggered your ads. That transparency makes optimisation straightforward: you add negative keywords, adjust bids on bestsellers, and temporarily exclude seasonal products.

What is Performance Max and what makes it different?

Google Shopping vs Performance Max

Key differences at a glance

Google Shopping

• Full control over search terms
• Transparent bidding per product
• Search network only (Shopping tab)
• Manual negative keywords available
• Ideal for proven products
• Clear per-product reporting

Performance MaxRecommended for scaling

• AI manages all Google channels
• Automatic budget allocation across channels
• Search, Display, YouTube, Gmail, Maps
• Limited negative keyword options
• Ideal for growth and new audiences
• Asset-based reporting

Performance Max is Google's newest and most ambitious campaign type. Rather than limiting you to one channel, PMax combines all Google channels into a single campaign: Search, Display, YouTube, Gmail, Google Discover, and Google Maps. The campaign is fully managed by Google's AI, which automatically determines where, when, and to whom your ads are shown, based on your goals, assets (images, videos, texts), and audience signals.

For e-commerce advertisers who connect a product feed to PMax, the campaign automatically takes over Shopping inventory as well. This means PMax can appear in the Shopping tab, just like a standard Shopping campaign. The key difference is that PMax is simultaneously active on all those other channels, without any additional effort on your part.

The trade-off is control versus reach. With PMax, you hand more control to the algorithm, but in return you benefit from the enormous amount of data Google processes in real time. The algorithm continuously optimises based on signals that no individual advertiser could manually track.

Key differences at a glance

To make the right choice, it is essential to compare the two campaign types side by side. The table below provides a clear overview of the most relevant differences between Google Shopping and Performance Max:

Feature	Google Shopping	Performance Max
Channels	Search Network only (Shopping tab)	Search, Display, YouTube, Gmail, Maps, Discover
Control	High (bids per product, negative keywords)	Limited (AI decides most things)
Reporting	Transparent (per product, per search term)	Limited (asset group level)
Smart Bidding	Optional (Target ROAS, Target CPA)	Mandatory (always Smart Bidding)
Data requirements	Works with limited historical data	Minimum 30-50 conversions per month recommended
Assets required	Product feed only	Feed plus texts, images, video recommended
Negative keywords	Fully manageable	Limited (account level only or via Google request)

The table makes clear that Shopping and PMax have fundamentally different philosophies. Shopping is the campaign type for advertisers who want to stay in control. PMax is the campaign type for advertisers who let the algorithm do the work and receive greater reach and scalability in return.

When should you choose Google Shopping?

Google Shopping is the better choice in a number of specific situations. Here are the main scenarios where Shopping is the preferred option:

• Limited budget: With a small budget, you want every euro to be used as efficiently as possible. Shopping gives you control to determine exactly which products you advertise and what you are willing to pay.
• Limited conversion data: PMax needs at least 30 to 50 conversions per month to function effectively. If you are just starting out or have a niche product catalogue, Shopping offers more stability.
• Excluding specific product groups: If you want to deliberately exclude certain products (low margin, out of stock, seasonal items), Shopping offers the most granular control.
• Transparency required: If you need to provide detailed per-product or per-search-term reports to clients or stakeholders, Shopping is the right choice.
• Protecting branded search terms: Shopping lets you steer branded versus non-branded traffic more effectively, without the algorithm mixing them up.
• Testing and learning: For A/B tests at the product or bidding strategy level, Shopping is more transparent and easier to analyse.

When should you choose Performance Max?

Average ROAS improvement by campaign type

Results from well-structured campaigns in 2026

PMax with strong assets

87%

PMax with audience signals

74%

Shopping + PMax combination

68%

Standard Google Shopping

52%

Shopping without optimisation

31%

Performance Max is the right choice when you are ready to scale and the algorithm has enough data to work with. In practice, well-structured campaigns deliver impressive results: advertisers who use PMax correctly with strong assets and good audience signals see their ROAS improve significantly compared to pure Shopping.

Performance Max is preferable in the following cases:

• Sufficient conversion data available: With at least 30 to 50 conversions per month, the algorithm can learn and optimise. The more data, the better PMax performs.
• Ambition to scale: If you want to generate more revenue and reach new audiences that Shopping would never expose you to, PMax is the right campaign type.
• Large product catalogue: With hundreds or thousands of products, it is impossible to manually optimise everything. PMax manages this automatically and efficiently.
• Strong assets available: If you have high-quality product images, videos, and compelling copy, PMax extracts maximum value by distributing them across all channels.
• Willingness to feed audience signals: PMax performs better when you give the algorithm the right signals, such as remarketing lists, customer lists, and look-alike audiences.
• Target ROAS or Target CPA as strategy: PMax always uses Smart Bidding. If you already have experience with Target ROAS or Target CPA, switching to PMax is logical and effective.

Combining Shopping and PMax: the hybrid approach

The choice is not always between Shopping or PMax. In many cases, a combination of both is the smartest strategy. In practice, 87% of successful e-commerce advertisers use both campaign types alongside each other.

A popular hybrid approach is using a Shopping campaign for proven bestsellers with high margins and a precise Target ROAS setting, combined with a PMax campaign for the rest of the catalogue or for reaching new audiences at the top of the funnel. This way, you combine Shopping's control with PMax's reach and scalability.

A concrete example: ToetsJeKennis.nl, a platform for online knowledge assessments and courses, initially relied exclusively on Google Shopping to promote specific test packages. Once the campaigns had built up sufficient conversion data, a PMax campaign was added with audience signals based on existing customers and website visitors. The result was significantly greater reach on YouTube and Display, engaging new audiences that Shopping had never been able to reach. The two campaigns complemented each other seamlessly, without budget cannibalisation, thanks to a well-thought-out campaign structure and priority settings.

Performance Max in practice

Average results for Dutch e-commerce advertisers in 2026

+34%

more conversions when switching to PMax

6x

more channels reached vs. Shopping alone

+28%

higher CTR with optimised assets

87%

of advertisers combine both campaign types

Conversion tracking and data quality

Both Shopping and PMax depend heavily on accurate conversion tracking. For PMax, this is even more critical, because the algorithm relies entirely on conversion signals. Without precise conversion tracking, you cannot feed the algorithm the right information, which leads to suboptimal bidding decisions.

We always recommend activating Enhanced Conversions and investing in server-side tracking. With server-side tracking, conversions are tracked more accurately, even when users have ad blockers or cookie restrictions. Advertisers who have correctly set up server-side tracking see on average 23% more tracked conversions, which directly benefits PMax's optimisation capacity.

Also consider which conversion actions you configure. PMax optimises towards all activated conversion actions. If you have set up newsletter sign-ups or page views as conversions in addition to purchases, PMax may start optimising for those cheaper micro-conversions. For PMax, use only purchases as the primary conversion action wherever possible.

Frequently asked questions about Google Shopping vs Performance Max

Can I use Google Shopping and Performance Max at the same time?

Yes, this is absolutely possible and in many cases even advisable. When both campaign types are active in the same account, PMax generally wins the internal auction over Shopping. You can work around this by setting Shopping campaigns to high priority for specific products, or by segmenting certain products into separate asset groups within the PMax campaign. A well-thought-out campaign structure is essential here to prevent cannibalisation and allow each campaign type to excel where it performs best.

Has Performance Max completely replaced Shopping campaigns?

No, Google Shopping still exists as a standalone campaign type and is actively supported. While Google initially encouraged advertisers to switch to PMax, it now acknowledges that Shopping offers valuable control that PMax cannot match. For advertisers with specific control requirements, limited budgets, or limited conversion data, Shopping remains an excellent choice. The two campaign types are complementary, not competing.

What is the minimum budget needed for Performance Max?

There is no hard minimum, but in practice we recommend giving PMax at least 30 to 50 euros per day so the algorithm can collect data quickly enough to learn. With too low a budget, the learning phase takes too long and campaigns underperform. The more budget and the more conversions tracked daily, the faster PMax reaches its optimal performance. If your budget is limited, start with Shopping and switch to PMax when the budget grows.

How do I deal with the limited reporting in Performance Max?

Reporting in PMax is indeed less transparent than in Shopping. You can view the search term report for the search network component, but you cannot see exactly how much budget goes to which channel. To gain insight nonetheless, we recommend regularly analysing the campaign insights section, studying audience insights, and reviewing PMax's contribution through the attribution report. Linking Google Ads to Google Analytics 4 also provides deeper analysis of user behaviour. Good conversion tracking and server-side tracking are indispensable for measuring the full value of PMax.