To access the cheat menu, press CTRL + Shift + C at the same time.

1,000 Simoleons
Type Kaching.

50,000 Simoleons
Type motherlode.

Add Active Sim to Household
Type testingCheatsEnabled true. Shift+Click the Sim. Click add to household.

Allow Terrain Adjustments
Type constrainFloorElevation true/false.

Display Most Cheats
Type help.

Force Neighbor to Appear
Type testingCheatsEnabled true. Shift+Click the mailbox. Click force visitor.

Force Service Sim to Appear
Type testingCheatsEnabled true. Shift+Click the mailbox. Click force service sim. (If you have a child or younger, clicking social worker will get the child taken away.)

Framerate Display
Type fps on/off.

Full Screen
Type fullscreen on/off.

Ignore Lot Cost
Type freerealestate.

Llamas Enabled Message
Type enablellamas on/ff.

Make Friends
Type testingCheatsEnabled true. Shift+Click the mailbox. Click make friends for me.

Max Mood/Moodlets
Type testingCheatsenabled true. Press Shift+Click on the mailbox. Click Make Happy.

Modify Traits
Type testingCheatsenabled true. Press Shift+Click on your sim. Click Modify Traits.

No Limitations for Placing/Moving Objects
Type moveObjects on/off.

Objects Fade When Camera Gets Close to Them
Type fadeObjects on/off.

Objects Will Not Snap to Slots While Holding [Alt]
Type disableSnappingToSlotsOnAlt on/off.

Quit the Game
Type quit.

Return Sims to Safe and Neutral State at Home
Type resetSim [first name] [last name].

Set Age
Type testingCheatsenabled true. Shift+Click your Sim. Click Trigger Age Transition.

Set Career
Type testingCheatsenabled true. Shift+Click the mailbox. Click Set Career.

Show Talk/Thought Balloons above Sim’s Head
Type hideHeadlineEffects on/off.

Sim Knows Everyone
Type testingCheatsEnabled true. Shift+Click the mailbox. Click make me know everyone.

Slow Motion Visuals
Type slowMotionViz. 0 is normal, 8 is the slowest.

Static Motives
Type testingCheatsenabled true. Shift+Click the mailbox. Click make needs static.

Stupid Pun
Type JokePlease.

Test Cheats
Type testingCheatsenabled true/false.

View Career Outfits and Service Uniforms
Type unlockOutfits on/off.

If you have a cheat code for The Sims 3 for PC we don’t have, please post in the comments.

100 Simoleans
Enter: Klapaucius

1000 simoleans
Enter: Rosebud

Allows you toMove Non-movable Objects
Enter: Move_objects on

Choose the Size of your Lot
Enter: Lot Size (put chosen number here)

Delete the Mailbox
Enter: No more bills
Put the Move Objects Cheat On and then go into Build Mode. Now delete the mailbox.

Enables you to Control your Visitors
Enter: Visitor_Control

Naked Sim
When your Sim is in the shower, bath tub, hot tub, etc., set the Move_objects on cheat to On, then click on the shower or wherever your Sim is. Move it somewhere else and your Sim will be naked.

Promotion
Enter: Fast promotion
Enter the Move Objects Cheat, then send your Sim off to sleep. Then, when they are about to wake up, sell the bed. Time will still be set on ultra, so hit normal, then click on your Sim?s face in the gallery for an instant promotion (if the time is right).

Repeats Last Code Entered
Enter: !

Sets What Time you Wish to Get Up
Enter: Set hour

Stop the Carpool
Enter: Never miss work
Put on the Move Objects Cheat and then place your garbage can in the middle of the road When the carpool arrives, the vehicle will stop moving and start honking.

The Best House
Enter: Mansion

Codes
kaching – gives you 1000 simoleons
motherlode – gives you 50,000 simoleons
moveObjects (on/off) – allows you to move objects you can’t ordinarily move (note: you cannot delete dishes, trash, or wastes like you can in The Sims. You can still delete people, but they will not ever reappear.)
aging (on/off) – turns on or off aging. works on entire household but not on whole neighborhood.
maxmotives – fills all bars (thanks to terrie)
help- all – lists all cheats
exit – closes cheat console

Other Parameters :
Add these to the shortcut’s parameters for other helpful things. Some have code counterparts. Get This By Doing This: Fullscreen Mode -f. Start with desired resolution (in pixels). -r[width]x[height]
Disables sound -nosound
Windowed Mode -w

Misc. Codes Press CTRL + SHIFT + C to access the cheat window, then enter the following: Get This By Doing This :
increases game performance but lowers graphics vsync (on/off) lets you know if theres a patch: autopatch (on/off)
moves objects and deletes you couldnt before: moveobjects (on/off)
get 1000 cash: kaching
list cheats: help -all
closes cheat window: exit
expands or contracts cheat window: expand
makes your sims larger or smaller: StretchSkeleton
turn off aging: aging off
turn on aging: aging on
50,000 simoleans: motherlode
Turn off facial bounding limitations. It prevents the normal corrections the game will make for two parents with very different facial structures: faceBlendLimits (on/off)
You can invite more people to your parties: intProp maxNumOfVisitingSims 8
You can place objects outside the grid: boolProp snapObjectsToGrid true/false

Neighborhood Only Cheats:
Bring up cheat window by pressing Ctrl + Alt + C
At neighborhood view only, removes every Sim from the neighborhood: deleteAllCharacters
Only for use in neighborhood view, toggles between the two terrain types: TerrainType (desert/temperate)

More Codes
Press Ctrl + Shift + C to access the console. S
ome cheats require you enter the Postprocessing cheat.
Make you set the game speed: (# = 0 to 8, 0 is normal) slowMotion #
Turns Postprocessing on: boolProp enablePostProcessing true
Turns Postprocessing off: boolProp enablePostProcessing false
Sitcom flashback blur effect: (# = 0.0 to 1.0) (require postprocessing on) bloom rgb #
Blurry bits at the edge of the screen: (# = 0.0 to 1.0) (require postprocessing on) vignette # # #
Makes the screen grainy: (# = 0.0 to 1.0) (require postprocessing on) filmGrain #
Adds a letterbox effect to the view: (# = 0.0 to 0.4) (require postprocessing on) letterBox #