Seminars are two days, whereas a conference is between 1-5 days depending on how many you'd like to attend. Conference days allot 6 earned credit hours per day whereas Tax Update Seminars allot 8 credit hours earned for each day. Other than the amount of days and credit hours, you will not receive any bonus credits at a seminar. With a conference, you will receive 2 bonus credits per day that you attend live in person.