Yes, Meta appears to be enforcing a minimum spend of $5 per ad set per day in many ad accounts, especially those targeting Tier 1 countries (e.g., US, UK, Canada). While this isn't officially documented as a global rule, here’s what’s likely happening:
Meta’s Ad Delivery Requirements
Meta sets internal thresholds to ensure enough budget is allocated for the system to gather performance data and exit the learning phase. A budget below $5/day often isn’t enough to generate statistically meaningful results—especially with conversion objectives.
Campaign Type & Optimization Goal
Conversion-focused campaigns (e.g., Sales, Leads) usually require higher minimum budgets.
For traffic, engagement, or awareness, Meta may allow lower daily budgets, though delivery may be limited.
Ad Account History or Spend Level
Newer or low-spend accounts may face stricter limits. If your account is relatively new or has minimal historical spend, Meta may restrict publishing until the budget meets internal delivery criteria.
What You Can Do
Try switching to Advantage+ campaign budget (CBO) instead of ad set budget, which allows better distribution.
If you're testing creatives, consolidate ad sets rather than splitting them at low budgets.
If $5 is too much, use lifetime budgets with shorter durations to simulate lower daily spend.
In short, while not officially declared, $5/day per ad set is now a functional minimum for most performance-focused campaigns.
