Short answer
For daily-budget campaigns with fixed bidding, the campaign's daily budget must be at least the highest effective per-event bid across its active ad groups, including audience bid adjustments. Lower the bid caps or multipliers first, then save the lower budget.
Example
An ad group with a $250.50 effective bid blocks any daily budget below $250.50. This isn't a general $250 minimum; it comes from that bid.
Fix
- Find ad groups with the highest bids or multipliers
- Reduce each to the budget amount or lower
- Save the new budget
Questions
Does this apply to Maximize results?
No. It doesn't apply to automated bidding or lifetime-budget campaigns.
Facts checked against the sources below on 12 October 2026. Platforms change quickly: if something here no longer matches what you see, tell us and we will update it.
