Paying gas bills online is a smart way to save money and time. After all, waiting for a bill to come in the mail, finding the time to sit down and write a check, finding a stamp, and then mailing the bill can take a lot of time. Instead, if a person pays his or her gas bills online, he or she can save time and money on postage and mailing. This is important for the busy professional who wants to access bills online and be able to pay them quickly and efficiently.