Abstract: Systems, methods, and computer-readable storage media that may be used to provide bid adjustment recommendations for budget-constrained content campaigns are provided. One method includes identifying a content campaign eligible for each of a plurality of auctions that was excluded from at least some of the auctions based on a budget constraint. The method further includes simulating the auctions using one or more adjusted bid values and generating estimated results for the adjusted bid values based on the simulated auctions. The method further includes determining at least one adjusted bid value that is estimated to result in at least one of the following: (1) increased clicks under substantially the same budget constraint; (2) increased clicks at substantially the same total cost; or (3) decreased cost with substantially the same number of clicks. The method further includes providing at least one recommendation to adopt the at least one adjusted bid value.