Press Ctrl + Shift + C to access the cheat window, then enter the following to activate the corresponding cheat function.

Code	Effect
kaching	1,000 Simoleons
motherlode	50,000 Simoleons
exit	Closes cheat window
help (cheat command)	Displays information about the cheat
expand	Expand or contract cheat window
FamilyFunds (Family Name) (#)	Gives you whatever amount of money you need.
intProp maxNumOfVisitingSims (number)	Invite more guests to a party (use in neighborhood view)
help	Lists cheat codes
StretchSkeleton #	Make sims larger or smaller. 1.0 is normal size
moveObjects (on/off)	Objects can be placed anywhere in build and buy modes
aging (on/off)	Prevents sims from aging
deleteAllCharacters	Remove all sims, at neighborhood view only
boolprop lotTerrainLighting (true or false)	Set to false and lots will not light up when highlighted in neighborhood
boolprop locktiles (True/False)	Set to false to place floor tiles outside lot
boolProp snapObjectsToGrid (True/False)	Set to false to place objects out of grid
boolprop displayNeighborhoodRoadsWithModel (true or false)	Set to false to remove bridges from neighborhood.
boolprop lotTerrainPaints (True/False)	Set to false to remove floorpainting on lot
boolprop displayLotImposters (True/False)	Set to false to remove house graphics from neighborhood
boolprop displayNeighborhoodProps (true or false)	Set to false to remove props from neighborhood
boolprop lotWater (true or false)	Set to false to remove removes water (ponds) from lots
boolprop displayNeighborhoodRoads (true or false)	Set to false to remove roads from neighborhood
boolProp guob (True/False)	Set to false to remove shadows on objects inside house
boolprop objectShadows (True/False)	Set to false to remove shadows on objects outside house
boolprop displayNeighborhoodWater (true or false)	Set to false to remove water from neighborhood
boolprop displayNeighborhoodFlora (true or false)	Set to false to removes trees/plants from neighborhood
boolprop allObjectLightsOn (True/False)	Set to true to light up objects always instead of only when in use
boolProp displayPaths (True/False)	Set to true to see the path where the selected sim walks to
slowMotion (0-8)	Slow motion, 0 is normal, 8 is slowest.
boolprop showFloorGrid (True/False)	Toggle grid in build or buy mode
boolProp simShadows (True/False)	Toggle shadows for sims
TerrainType (desert/temperate)	Toggle terrain types, use in neighborhood view
motiveDecay (on/off)	Toggles motive decay on or off.
faceBlendLimits (on/off)	Turns off facial DNA blending in Create-A-Sim

Note: Some codes may be case-sensitive.