This is the most effective "clean" method. By waiting until the end of the main story to complete Lester's missions, you can invest all your heist earnings into specific stocks (like Fruit or Vangelico ) that fluctuate based on your targets, potentially netting over $2.1 billion [5, 18].
Watch this step-by-step guide to adding money to your Story Mode account using the Menyoo mod menu: How to Add Money in GTA 5 with Menyoo | Enhanced & Legacy YouTube• Jan 21, 2026 If you'd like to proceed, tell me: GTA 5 Money Mod
In Story Mode, you can safely use mods and game mechanics to accumulate billions. This is the most effective "clean" method