Complete story missions and heists for large payouts
Use Lester’s assassination missions with stock market manipulation
Save assassination missions until after the final heist for maximum profit
Invest in the correct stocks before and after each assassination mission
Replay high-paying heists and missions to build cash
Rob stores and armored trucks for quick early money
Collect hidden packages, briefcases, and collectibles
Buy properties that generate passive income
Sell stolen cars at Los Santos Customs
Use the stock market by buying low and selling high
Finish side activities that reward cash
Complete random events that pay money
Loot mission areas for cash pickups
Avoid unnecessary spending early in the game
Switch between characters to take advantage of market changes
Keep cash in stocks instead of holding it as money when possible