Income-generating assets are another of many passive-income opportunities. A classic example is making money in real estate via owning rental properties. It can seem perfect: You buy an apartment building or house, rent it out, and then sit back and collect checks every month from your tenants. The reality isn't always so rosy, though. For one thing, you'll need to maintain and repair the property, as well as paying taxes on it and insuring it. It may not always be occupied, either. You may have trouble finding tenants, or finding tenants who pay their rent reliably. Some tenants may damage the property, and others may be hard to get rid of. You'll be the one they call in the middle of the night if the roof is leaking, and you'll have to clean and perhaps freshen up the property between tenants. You can outsource much of this to a property management company, but it will take a cut of your income, often about 10%.
Quick story: Remember that $1.18 I found in the couch? Even when that increased to $30 to $50 a day, it still wasn’t enough to live on. So I looked for other options. In August 2008, after people started to know who I was and how I could help them pass the LEED certification exam through my blog, I wrote an ebook. It included all the information I knew about passing this exam, and I sold it on my blog for $19.95.

With $200,000 a year in passive income, I would have enough income to provide for a family of up to four in San Francisco, given we bought a modest home in 2014. Now that we have a son, I'm happy to say that $200,000 indeed does seem like enough, especially if we can win the public-school lottery to avoid paying $20,000 to $50,000 a year in private-school tuition.

Buy a small business: A local small business, like a car wash or a laundromat, is a great way to put money down on a money-making venture. Automate it so you don't have to be on the premises unless you're collecting money. Go into a local business with your eyes wide open - study the books, especially on income and expenses, and examine water and utility bills if your venture will be open 24 hours.
That strategy seems waaaayyyy less risky than actively picking stocks of supposedly “reliable” stocks that issue dividends, which could be cut at any time due to shifting industry trends and company performance. Dividend investing feels like an overly complex old-school way of investing that doesn’t have a very strong intellectual basis compared to index investing.
Thus, it's easy to dream of money just arriving, without our having to clock in to earn it. Fortunately, passive income streams don't have to be a dream. There are many sources, with examples including REIT dividend income, residual money, real-estate investments, interest, and other income-generating assets. Here's a look at 15 of them -- see which opportunities could work for you.
Sell an eBook Online – Self Publishing is mainstream today. When you purchase an eBook off of Amazon there’s a pretty good chance you’re buying a self-published book. Self-publishing is also ridiculously easy. I tried this a few years ago and couldn’t believe how simple the process was. To self-publish a book you’ll first need to write and edit it, create a cover, and then upload to a program such as Amazon’s Kindle Direct Publishing. Don’t expect instant success though. There will need to be a lot of upfront marketing before you can turn this into a passive income stream.
The much loved model for bloggers and content creators everywhere and for a good reason…it’s pretty easy to write a 60-80 page ebook, not hard to sell say $500 worth a month through online networking, guest posting and your own SEO optimized blog, and well you get to keep a large whack of the pie after paying affiliates.  Hells yeah!  Continue reading >
This one may seem simple, but that’s only because it is. If you were to move your savings from a traditional, brick-and-mortar bank with a low-interest rate and into a high-yield savings account online, over time you can make a surprising amount of extra cash. Online banks are FDIC-insured just like the traditional brick-and-mortar institutions, so your money is just as safe.
For a person working for a wage, their source of income is their job, or their labor (aka their time that they sell to someone). But you can own a house, and rent it out, and when your renters pay you renter every month, the source of that income check is your rental property, or your house. It would just be called rental income. If you have money in the bank in an account that pays interest, those interest payments are another source of income. We can say the source is interest payments, or we can identify the asset that is generating rent, and say your money in the bank that is generating “rent” (aka interest) is your source of income.