You can never have enough money, especially if you don't have the patience to wait while you accumulate enough energy points to complete actions or buy some of the more expensive items you have been coveting for your home. If you do not want to spend real money to do these things immediately the following tips will at least speed up the process and give you free money.
Save Money
Avoid wasting money on mundane actions such as speeding up a job shift. You will find that actions will have completed anyway when you leave the game and return later so there is no point in spending money on them.
Quests and To-Do List
You can increase your earning power by completing the Quests and the daily tasks that are on the To-Do List. New Quests are added whenever you complete story chapters and new entries on the To-Do List will appear daily.
Level Up Sims
Whenever you level up your Sims you will earn money and unlock new home items. Leveling up Sims involves gathering EXP points, which are gained primarily through completing relationship, work and hobby events.
Watch Advertisements
You can earn free money by watching advertisements. Each time you complete a relationship, work or hobby event, you will be shown the rewards you earned, along with an option to earn extra money by watching an advertisement. Tapping the mailbox that is located outside of your home or any object that has a blue triangle over the top of it will also give you the opportunity to watch an advertisement in exchange for money.
Long Events
Never leave your Sims idle before exiting the game. Whenever you know you are going to be away from the game for a long period of time make sure you start all of your sims on a long-term event so you can reap the rewards when you return.