Google Demand Gen budgets: the $5 rule and $100 advice

Google’s $100-a-day Demand Gen advice is a testing recommendation, not a new mandatory minimum. In a recent Ads Decoded episode, a Google product manager uses that budget to explain why campaigns need enough money and time to explore their creative assets. Google’s current API documentation separately specifies a daily minimum of US$5, or the local currency equivalent.

For ecommerce teams, the useful question is whether the budget can support the test being proposed. A technically valid campaign budget does not establish that it will produce meaningful results—or profitable orders.

What Google actually said

At around 9:09 in Google Ads’ official video, the Demand Gen product manager describes a campaign with a $100 daily budget as “bare minimum best practice”. The surrounding example matters: loading tens of thousands of images and videos into that campaign would leave the system with too much creative to explore quickly.

He explicitly separates those non-feed assets from retail product feeds, which can handle much larger volumes. Merchants should not read the example as an instruction to shrink their product catalogue.

The practical message is to match creative volume to the resources available for testing. More assets are not automatically better if the campaign cannot explore them adequately.

Watch the budget discussion on YouTube if the video does not load.

What the documented minimum means

Google’s budget restrictions documentation specifies US$5 per day, or the local equivalent, for Demand Gen campaigns. It also documents the error returned when a budget falls below the required minimum.

That is a validation rule for campaign budgets. The video’s $100 recommendation addresses how much room a campaign has to learn about creative. Treating one as the other could lead a smaller store either to abandon a viable test unnecessarily or to expect too much from a very small one.

Plan a test your store can evaluate

Our recommendation is to define the business question before choosing the daily amount: which product, audience or creative idea is the campaign meant to test, and what outcome would justify continuing?

• Check measurement first. Confirm the conversion action represents the outcome you want to assess, and that purchase values are being recorded correctly.
• Start with purposeful variety. Test distinct creative ideas and useful formats without multiplying assets simply to increase their count.
• Keep changes interpretable. Record what changed and when, rather than replacing the entire creative set at once.
• Set a review point. Decide how much the business can spend on the test and what evidence is needed before expanding it.

The episode also recommends gradual creative changes and keeping strong performers while introducing new material. Refresh decisions should reflect observed performance, rather than an assumed expiry date for every ad.

For a merchant, the takeaway is a manageable experiment with reliable measurement—not a universal instruction to spend $100 every day.