There are several documented examples of ERP implementations that went over budget or did not hit the original go-live date. There are also many explanations out there to explain why these ERP implementations did not meet budget or timeline. Instead of repeating common information out in the ERP blogosphere, I would like to speak to a root cause that is typically overlooked by our industry – inaccurate ERP implementation estimations. In the next sections we will take a closer look at building a better ERP estimate.