“Start-up time” required: Poor – Experienced niche site builders will be well versed with outsourcing certain tasks and running through the whole process very efficiently, but when you first start out, it can take a long time to earn your first dollar from a niche site.  Doing research, designing the site, writing content, and doing proper SEO work can all be very time consuming, and the payoff isn’t always something you can rely on.
Passive income differs from active income which is defined as any earned income including all the taxable income and wages the earner get from working. Linear active income refers to one constantly needed to stay active to maintain the stream of income, and once an individual chooses to stop working the income will also stop, examples of active income include wages, self-employment income, martial participation in s corp, partnership.[4] portfolio income is derived from investments and includes capital gains, interest, dividends, and royalties.[5]
Lending Club went public in 2014 and is now worth about $1.7B. They advertise P2P lending returns of over 7% for well-diversified portfolios of over 100 notes. I’ve personally been able to achieve a 7.4% annual return over the past two years in a completely passive way by investing in A and AA notes. Others have achieved a 10% annual return through relatively minimum effort.

They also launched an incredible Retirement Planning Calculator that pulls in real data from your linked accounts to run a Monte Carlo simulation model to output the most likely results of your financial future. I strongly suggest you run your own numbers, play around with the income and expense variables, and see how you stack up. It’s all free and easy to use.

If you have extra time with you over weekends or after your job, you can freelance and take small projects. There are many websites like elance.com , odesk.com or freelancer.com where you can earn money by working on projects. There are thousands of people in India who are working full time on these kind of freelancing websites and believe me, they are earning in lakhs. Look at it as a serious way of making money and not just a time pass activity.
What I’m doing: My realistic goal is to have a blended annual return of 2x the risk free rate. With a current 5% hurdle, I am not paying down mortgages that cost less than 4%. Debt at 5% is a wash. My realistic blue sky scenario is a 3-4X rate of return over the risk free rate which can be achieved with property, stocks so far for the past five years, and certain private equity investments. Where I am dragging is my blended average CD interest rate of roughly 3% from an old CD coming due. I’ve rolled some money into a 12-month CD with CIT Bank at 2.5%. It’s the best rate I can find. 
New World Wealth publishes reports tracking the total wealth of countries, which is measured as the private wealth held by all residents of a country. According to New World Wealth, India's total wealth increased from $3,165 billion in 2007 to $8,230 billion in 2017, a growth rate of 160%. India's total wealth rose by 25% from $6.2 trillion in 2016 to $8.23 trillion in 2017, making it the sixth wealthiest nation in the world. There are 20,730 multimillionaires (7th largest in the world) and 119 billionaires in India (3rd largest in the world). With 330,400 high net-worth individuals (HNWI), India is home to the 9th highest number of HNWIs in the world.[335] Mumbai is the wealthiest Indian city and the 12th wealthiest in the world, with a total net worth of $950 billion in 2017. Twenty-eight billionaires reside in the city.[336] As of December 2016, the next wealthiest cities in India were Delhi ($450 billion), Bangalore ($320 billion), Hyderabad ($310 billion), Kolkata ($290 billion), Chennai ($150 billion) and Gurgaon ($110 billion).[337][338]
In May 2014, the World Bank reviewed and proposed revisions to its poverty calculation methodology of 2005 and purchasing-power-parity basis for measuring poverty. According to the revised methodology, the world had 872.3 million people below the new poverty line, of which 179.6 million lived in India. With 17.5% of total world's population, India had a 20.6% share of world's poorest in 2013.[339] According to a 2005–2006 survey,[340] India had about 61 million children under the age of 5 who were chronically malnourished. A 2011 UNICEF report stated that between 1990 and 2010, India achieved a 45 percent reduction in under age 5 mortality rates, and now ranks 46th of 188 countries on this metric.[341]
The information technology (IT) industry in India consists of two major components: IT services and business process outsourcing (BPO). The sector has increased its contribution to India's GDP from 1.2% in 1998 to 7.5% in 2012.[213] According to NASSCOM, the sector aggregated revenues of US$147 billion in 2015, where export revenue stood at US$99 billion and domestic at US$48 billion, growing by over 13%.[213]
4. Save, build and run a bread-n-breakfast place. Look at airbnb Vacation Rentals, Homes, Apartments & Rooms for Rent - Airbnb for inspiration. My wife runs one (Firdaus, Naukuchiatal) , it is not an income as of now but if you are on it for enough time, it would be, when you grow old. It doesn't have to be a fancy and glamorous thing. It could be a  2 nice-n-clean room in a city where you live. If you have a big house, it could be a  part of your house.
According to Chris Anderson of The Long Tail fame, this multiplicative impact seems to be related to a networking effect. Power law distributions seem to be created by “preferential attachments” among nodes in “scale-free” networks, which is to say that the winners are more connected than the losers. Similarly, there seems to be a clear relationship between connectedness, income and wealth. We can all optimize our practice by directing and optimizing our connections.
Add Leverage (Mortgage) and you greatly increase the ROI especially from the perspective of using Rents (other peoples money) to pay down the mortgage and increase your equity in the property over time. At this point then yes price appreciation is secondary bonus and we have an arguement of how and why Real Estate can be better than Growth Stocks in some scenarios and for some investors.
Today I sent my Annual Message to the Congress, as required by the Constitution. It has been my custom to deliver these Annual Messages in person, and they have been broadcast to the Nation. I intended to follow this same custom this year. But like a great many other people, I have had the "flu", and although I am practically recovered, my doctor simply would not let me leave the White House to go up to the Capitol. Only a few of the newspapers of the United States can print the Message in full, and I am anxious that the American people be given an opportunity to hear what I have recommended to the Congress for this very fateful year in our history — and the reasons for those recommendations. Here is what I said …[4]
Great ideas here, and thanks for the link! I’m definitely interested in learning about using an Ebay store, although I’ve heard they are not as effective as they used to be. One interesting problem that arises though is with online work, that is, work performed via the internet. If one does not reside in one’s home country while doing it it might be considered illegal (so check on all those tax implications).
The combination of protectionist, import-substitution, Fabian socialism, and social democratic-inspired policies governed India for sometime after the end of British rule. The economy was then characterised by extensive regulation, protectionism, public ownership of large monopolies, pervasive corruption and slow growth.[55][56][57] Since 1991, continuing economic liberalisation has moved the country towards a market-based economy.[55][56] By 2008, India had established itself as one of the world's faster-growing economies.
You are also free to choose a fund that is based on any index that you want. For example, there are index funds set up for just about every market sector there is — energy, precious metals, banking, emerging markets — you name it. All you have to do is decide that you want to participate, then contribute money and sit back and relax. Your stock portfolio will then be on automatic pilot.
Thanks for writing this Mr. Samurai. I just got over the student loan hump but I feel pretty good about it at 27 having a graduate degree and being 100% debt free. Now that I’m on the other side it is good for my brain to absorb some of your knowledge regarding passive income investments. I love gleaning wisdom from older folks who have been there and done that. Mentors rock!
Self-Employed Income: This is a big shot played by you, where every shot is decided and executed by you. Where the success of your work is determined and expressed by your belief and performances. Yes, there are some demerits of the same for suppose you are sick or want a vacation; still you have to run the show and cannot be completely unavailable for a long time from your establishment.
We encourage a more holistic, total return approach to your sustainable spending needs from investments.  An improved portfolio includes a wide range of income sources providing both cash flow and capital growth.  Your chosen blend should match your overall financial goals, considering your tolerance for risk, time frames, income and liquidity needs with a spending rate that sustains the investor’s wealth.