This is mostly passive once you have it all set up, but it does take a lot of work at the beginning. Real estate investing also requires occasional maintenance. Currently, we invest in a couple of rental properties and earn about $500 profit from each per month. You can read more about my rental properties at How and Why I Became a Landlord.
Most employees will not see much income from social capital. While there may be the occasional gift or inheritance, Social Security and defined benefit pensions only begin to pay monthly income after retirement. On the other hand, those of us with medical and/or disability conditions may see income from matching social or insurance programs prior to retirement.
Business Income: Contrasting to the self-employed ones, the business owners do not do all the work on themselves. In fact they get things done by different set of people working for them and they run the business. They create a system which then functions smoothly even with minimal supervision. This calls for a much less risky position and allows you time to build more and more income sources for yourselves.
Find the thought leaders in your particular industry, and find how what they’re saying about the industry. Many thought leaders put out white papers, free webinars and other useful information to attract an audience- and potential future clients. The information must be useful, in order to keep the reader engaged, and it can be a great reference for you.
If you are an expert in some area, which you think can be taught to others by creating a course out of it, you can always sell it on or and make money on the fees recieved by the students. So if you are an expert on cooking, Yoga, SEO , Designing, MS Excel, Java, Python … whatever.. Create a nice rich course , record your videos and done ! .. You can tie up with these websites and then earn a lot money. Just understand those models and work on it.
Most of us think of investment income as just the cash flow we get from bank interest, bonds, share dividends and property rents, some of which comes via a super pension.  But a more complete view is to also consider how growing the value of your investments can add to your spending potential.  This total return approach generates income from both income and growth to optimise spending from your portfolio across all market cycles, aligning cheap and expensive investments to your goals.