Over the last few months, Microsoft has been tweaking the daily budget capabilities in its API in an effort to make its system simpler and easier to use. As of earlier this month, any new or edited campaigns included the Daily Budget with Monthly Maximum option, which calculates a monthly maximum based on advertisers’ daily budget. Now, AdCenter will begin calculating the monthly maximum for all campaigns, as of June 1.
The calculated monthly maximum equals the daily budget value multiplied by the average number of days in a month. If advertisers prefer to manage their budgets on a monthly basis, they may still do so.