How is Commission, Overtime or Bonus Income Treated in Tennessee Child Support?

All of these types of income are considered “variable income.”  Variable income gets averaged (e.g., over recent years, as applicable), and added to the monthly income under the guidelines.  But the inclusion of variable income has to be in line with the specifics of your case. If the company employing one of the spouses is having a bad year, or if overtime is no longer being offered, it would be unfair to include the extra income in the calculation.