Why do so many of us procrastinate on our taxes? Isn't the saner question, who doesn't? Who likes doing taxes? In fact, that's part of the answer to why we put it off - it's aversive! But, what does aversive mean? We explore a little bit of this based on research about personal projects and task aversiveness. Although we focus on tax preparation, this research speaks to any task we find aversive and what this means to procrastination.