Disclosed herein are a method, a system, and a computer-readable recording medium for performing charging for a search advertisement based on a publication ratio thereof. The method for performing charging for a search advertisement based on a publication ratio thereof includes: calculating the publication ratio of the search advertisement to a plurality of users, the publication ratio substantially indicating a ratio between the number of search advertisement published to users recognized as belonging to a first group and the number of search advertisement published to users recognized as belonging to a second group; calculating each of the charging amounts for the search advertisement published to the users recognized as belonging to the first group and the search advertisement published to the users recognized as belonging to the second group; calculating a final charging amount based on the publication ratio and each of the calculated charging amounts; and performing charging for an advertiser of the search advertisement using the final charging amount.