There are no money cheat codes in Grand Theft Auto: Vice City. The best way to make money is to acquire as many assets and business establishments as possible fast. There are also side games where the player can earn money fast, especially when played with one or more cheats activated.
Below is one method of acquiring easy money fast. This method can only be used when the player has already purchased the Sunshine Autos property.
Once the player purchases Sunshine Autos, he will be given access to several side race games. He must enter the Vice City endurance race. It will have a $10,000 fee, but the reward is $40,000 for a $30,000 profit.
The player must win, which can be ensured by disabling the other cars entered in the race. One way to do it is to use the Destroy All Cars cheat. On the PC, he can activate the cheat by typing BIGBANG and on the PlayStation 2 by pressing R2, L2, R1, L1, L2, R2, SQUARE, TRIANGLE, CIRCLE, TRIANGLE L2 and L1 during gameplay. Alternatively, the player can manually destroy all the vehicles on the starting blocks with his available weapons, but he must do it quick because the race will start when one car is damaged.
Once all the other competing cars are destroyed, the player can cruise throughout the race for an easy $30,000 profit. Enter the race again as needed to earn easy money.