That's odd, because lot of these questions are actually pretty easy to answer. The IRS is good about publishing the data. Given that – and given the recent interest in personal income inequality, I decided to write a little bit about the different kinds of income people report on their tax returns. A longer paper – Sources of Personal Income – is here, but for a brief overview, you might want to check out the top ten sources of income:
I am still working on my passive income, however I like multiple income streams even more. My favorite is capital gains because it is one of the lowest rates. One of the best passive income streams is a pension/Social Security. As I near retirement, I like the concept of it supporting my needs and my 401k supporting my wants. In addition, my brokerage accounts are all at capital gains rates. Don’t misunderstand, I am still working on adding more because I like multiple income streams!

To your point about Municipal Bonds, my concern is tax reform. While everything is mostly being worked behind closed doors (and likely wont ever see the light of day). There is still the chance they propose to limit the amount of the tax free nature of these bonds. While I dont sen panic in the streets, I do see a scenario where bond prices get additional pressure because municipalities have to increase rates due to people putting their money to work elsewhere.
You might be thinking one job makes you exhausted by the time you come home from work, how can you create second, third, fourth one and work so efficiently for them. You have to find out ways of creating multiple sources that are suitable for you and can add steady flow of income in your monthly salary basket. It could be as low as INR. 100/- per month but has to be steady.
Hi, I’m an 18yr old who is about to enter college with a substantial amount of federal aid and scholarships but it is nowhere near enough to pay for the full amount. I know that I will be in debt but I need to figure out a way to generate multiple sources of income somehow to let money flow within the 4-6 years I will be in college. When I’m done with schooling I don’t want to be suffocating in my debt so much where I won’t be able to do anything in life.

Retirees are paying a high price as the world stimulates its way out of the GFC (Great Recession).  After a 30-year bull market to the lowest interest rates the world has ever seen, bonds have become highly priced and now don’t generate enough to meet income needs.  Just 5 years ago the average income from $100,000 invested in a 10 year Australian Government Bond (10yrs) was $5,600 p.a.  – now it’s less than half at $2,600 p.a.