In order to promote their business, companies need to invest money in advertising. In order to keep control of the budget, some advertisers decide on setting the maximum daily expenditure. The amount theyre allowed to spend on advertising each day is often referred to as the daily budget. Daily budget is an important factor when it comes to setting up an advertising campaign. Whether its a Google AdWords campaign or promotion via some of the social media websites, in order to manage it, the advertisers are advised to set up a daily budget. Not only does it give them a good idea about how much money theyre going to spend in total, but it daily budget also enables them to judge the success of the campaign.