1) Getting rid of errors when multiple sources of data are combined. 2) Fewer errors mean less frustration for employees and happier clients. 3) Being able to accurately map the different functions so that your data does what it's supposed to. 4) Monitoring errors and better reporting to see where errors come from makes it easier to correct corrupt or erroneous data in the future. 5) Data cleaning tools can help with faster decision-making and more efficient business practices.