The minimum daily budget is $1.00. Your daily budget, however, must be at least twice your max bid. For example, if you specify your max bid to be $10.00, then your daily budget must be at least $20.00. Keep in mind that small daily budgets limit the number of reads in a day. This makes it hard for our system to place your ad, which can hurt delivery.
So, if you have a limited advertising budget, we encourage you to try advertising for a shorter period of time with a higher daily budget. For example, if your monthly budget is $30.00, try scheduling your campaign for 1-2 weeks at a higher daily budget, rather than for 30 days with a $1.00 daily budget. This type of strategy should maximize ad performance.