However, that requires some seriously dedicated and efficient grinding, so if you’re interested in reaching those goals then follow the resources below for further reading on how to achieve them. The old adage that money makes the world go around holds equally true in Rockstar’s online world, and therefore knowing how to make money fast in GTA Online is going to give you an advantage over your rivals. You can then use the laptop in the bunker to sell your stock via a delivery mission to turn a profit. You do have an unlimited number of tries to beat the par time and can respawn back at the start, but the longer it takes, the less money you effectively make per hour from this method. As you will read in the separate stock market guide linked above, Assassinations are missions given by Lester that let you affect the stock market, thus making significantly greater profits than with just about any other activity.