Press [CTRL] + [SHIFT] + [C] while playing to open the cheat box. Type any of the following cheat codes. 
 

Code:                                           Result:
Kaching                                       Add $1000
Motherlode                                   Add $50.000
testingCheatsEnabled true             Debug Mode (Move Needs, Shift+Click Mailbox to Change Career)
fps on                                          Show FPS
resetSim [first name] [last name]   Returns Sim to Safe, Neutral State
slowMotionViz #                           Put Visuals in Slow Motion (#=0 thru 8)
unlockOutfits on                           Use Before Going to CAS. Shows Career and Service Uniforms in CAS
familyfunds [family name] #           Add or Subtract Money from Family