How to Get Rich on Sims Three
My guide on getting rich in sims three (without cheats).
-Gardening: buy a property with a large gardening space plant the seeds you where given after leveling up. Tend your garden when ever it needs tending and use everything your plant/trees grow to plant more seeds until your garden is jam packed with plants/trees. Maintain the garden and sell all produce.
-Painting: When your Sim has free time get his/her creative skill up to its peak. Paint often and sell paintings for thousands! (Note: to make masterpieces more often which sell for more Sim money use your life time happiness to obtain traits such as “extra creative”)
-Writing: once you have peaked your writing skill you are able to earn weekly royalty’s for everything you write
-Complete career: an obvious one, but hey.. there’s no doubt that getting your Sim/s to there highest career level will bring in a lot of money.
-Quick cash: If you want a house with say only one or two Sims why not add the maximum amount of house mates to your house (each Sim brings a considerable amount of money to the house) then kick every Sim you don’t want in the house. This will enable you to keep the money you was given in the beginning of the game.
-Buy company’s: once you have a considerable amount of money spend it on business shares. You do this by going on town view and choosing which company you want a part of. You will earn a constant profit doing this
-Rude Landlord: Invite people to move in then kick them keeping there money

Those are really good tips.