Spend all of your money for a year. When the Tax Screen appears at the end of the year, hold L. While this button, return to the main game and press X(2) to display the tax screen again and advance the month to January. The text "GO WITH FIGURES" will be replaced with "GRO WITH FIGURES" to confirm correct code entry. Increase all funding levels to 100%, exit the screen, and release L. Your account balance will be $999,999.