The best way to earn a passive income with $1 million is to put it into something like real estate, where you own the property and can collect rent each month. With $1 million, you could invest half of that in a few properties that generate monthly income, pay a management company to manage it for you (so it’s completely passive), and invest the other half in a broadly diversified index fund. This way, you’re not opening yourself up to too much risk.