What's the Minimum Daily Budget for a Google Ads Demand Gen Campaign in 2026?

Google Ads enforces a $5-per-day minimum daily budget (or local currency equivalent) for Demand Gen campaigns at the API level, effective April 1, 2026 — but that's an enforcement floor, not a performance recommendation. Google's own Help Center separately advises a daily budget of at least $100 per ad group to avoid a slow "cold start," and $500 per ad group per day for efficient, consistent delivery.

Two Different Numbers, Two Different Purposes

These figures answer different questions, and conflating them leads advertisers to under-fund campaigns. The $5/day figure is a hard technical floor: Google's Ads API began rejecting attempts to set or edit a Demand Gen campaign below that amount starting April 1, 2026. Existing campaigns already running below $5/day kept serving uninterrupted, but any edit to those campaigns now requires raising the budget to at least the floor.

The $100/day and $500/day figures come from a different source entirely — Google's troubleshooting page for Demand Gen campaigns that aren't running or are getting low traffic. That page frames $100/day per ad group as the threshold to avoid a "cold start" (slow initial delivery while the algorithm has little data to work with), and $500/day per ad group as the level needed for genuinely efficient, consistent performance.

Why the Gap Between $5 and $500 Is So Large

The $5 floor exists to stop technically malformed or abandoned campaigns from sitting at near-zero budgets indefinitely — it's a system-integrity threshold, not a signal that $5/day campaigns perform well. Demand Gen relies on Google's machine-learning systems to find and serve to receptive audiences across YouTube, Discover, and Gmail, and that system needs a meaningful volume of daily impressions and conversions to optimize against. A campaign funded at the bare $5 minimum simply won't generate enough signal for the algorithm to learn efficiently, which is exactly the "cold start" problem Google's own troubleshooting guidance is written to address.

What to Actually Budget

• Never plan around the $5/day figure. It exists purely to keep the API from accepting unworkable campaign configurations — it isn't a budget recommendation from Google in any practical sense.
• Treat $100/day per ad group as your real floor. This is the number Google itself cites as the threshold below which Demand Gen campaigns commonly underperform or stall.
• Budget toward $500/day per ad group if efficiency is the goal, not just activation. Google frames this as the level associated with consistent, efficient delivery rather than just "running."
• Consolidate ad groups rather than splitting budget thin. Since the cold-start and efficiency thresholds are per ad group, spreading a fixed budget across more ad groups pushes each one further from the $100-$500 range Google recommends.

Bottom Line

Ignore the $5/day API minimum when setting a real Demand Gen budget — plan for at least $100/day per ad group to avoid a cold start, and closer to $500/day per ad group if efficient performance is the goal.

Sources: Google Ads Developers Blog, "Minimum budget requirement for Demand Gen campaigns" (ads-developers.googleblog.com); Google Ads Help, "Fix Demand Gen campaigns not running or low traffic: Low budget" (support.google.com/google-ads/answer/14718973).