And while real estate is an excellent option, it does require a significant initial investment, so whether or not this passive income stream is right for you depends on your current financial situation. You might be better off starting with an investment strategy where you can build funds until you have a big enough sum to get involved in real estate.
Nobody gets early FI investing in bonds, CD’s, or even stocks unless they make a huge income or are extremely frugal or a combination of both. Paper assets just don’t provide enough returns. Business income can be great but it is typically not as semi-passive as I would like and there is a relatively high failure rate. That is if you can monetize an ideal to begin with. RE investing needs to be higher ranked IMO as a way that the “average guy” can become FI.
One aspect you might want to add to your scoring is “inflation protection”. At one end, bonds and CDs generally pay a fixed nominal coupon that doesn’t rise with inflation. Stock dividends and Real estate rents (and underlying property value) tend to. Not reallly sure how P2P lending ranks- though I suppose the timeframes are fairly short (1 year or less?) and therefore the interest you receive takes into account the current risk free rate + a premium for your risk. Now that I think about it, P2P lending probably deserves a lower score in the activity column than bonds too (since you probably need to make new loans more often).
A different definition of residual income is that this is income derived from passive investments, rather than from a person's active income-generating activities. Examples are interest income, royalty income, rent, and increases in the value of investments held. Individuals typically work throughout their careers in order to build up a sufficient amount of this income to support them during their retirement.
This can be a little easier said than done, but if you have a large social media following, you can definitely earn money promoting a product or advertising for a company. You can even combine this with different marketing campaigns if you are an influencer and have your own blog (advertisement + affiliate income). This is how many bloggers make money! Again, it is not 100% passive but once set up correctly and then scaled, can be surprisingly lucrative.
Owning an investment property can result in both potential appreciation value over the long-term and direct tax benefits of depreciation. However, acquiring an investment property often requires large upfront capital ($100K to several million dollars depending on the type of asset), and lots of hands-on work. Furthermore, as with any investment, investment properties carry the risk of large, unexpected, and costly liabilities, which many investors do not have the experience or time to effectively handle. An investment property also is relatively illiquid—meaning you can sell at any time, but the sale process can often take months and may be unsuccessful.
Ask yourself how many hours a week do you spend sitting in silence, coming up with an idea and working on your idea? We’re so busy with our jobs that our childhood creativity sadly vanishes at some point in our lives. There are food bloggers who clear over $15,000 a month. There are lifestyle bloggers who make over $10,000 a month while living in Thailand. And there are even personal finance bloggers who’ve sold their sites for multi-millions.

A Risk Score of 10 means no risk. A Return Score of 1 means the returns are horrible compared to the risk-free rate. A Feasibility score of 10 means everybody can do it. A Liquidity Score of 1 means it’s very difficult to withdraw your money without a massive penalty. An Activity Score of 10 means you can kick back and do nothing to earn income. To make the ranking as realistic as possible, every score is relative to each other. Furthermore, the return criteria is based off trying to generate $10,000 a year in passive income.
You can find dividend stocks using Google Finance Stock Screener which is free to use. Set the search criteria for the P/E Ratio, and Dividend yield (shown as a percentage) criteria. You can set minimum and maximum values; in the dividend yield box, set it between 2 and 100. This will search for stocks that pay dividends worth between 2-100% of the current stock price.
2. Focus on income-producing assets. Internet growth stocks may be sexy, but they provide no income. To build a large enough passive-income stream to survive, you must invest in dividend-generating stocks, certificates of deposit, municipal bonds, government Treasury bonds, corporate bonds, and real estate. You're free to invest in non-income-producing assets for capital appreciation too. You just want to earn reliable income when the day comes to leave your job.
Generating passive income is NOT impossible. Passive income was just a dream for me until 2008. That’s when I was let go from my job due to the crumbling economy. With no other options, I bet on myself by trying to make my dream a reality. And you know what? The dream came true, and it’s totally awesome! I get to stay at home with my family, work when I want, and make my own decisions. This lifestyle is possible, and I want you to experience it too.
Wow! What an awesome list! My favorite is the stock photography because I love photography. I have had some success there, particularly with one photo I make some decent income from. I think the key with stock photography is finding a shot that is high demand. Then, find a new unique way to frame that shot. This is the reason my St. Louis Arch photo is a top 10 on both ShutterStock and iStockPhoto. Thanks for the awesome ideas above!
First: I understand why you would say that such investments are restricted to only accredited investors, because generally, that’s true. There are means, under federal securities regulations and Blue Sky laws in each state, to sell interests to non-accredited investors – but usually those means are so heavily regulated and involve disclosures so similar to cumbersome registration requirements that it is not worth it for the seller to offer to non-accredited investors.
Establishing residual income allows you to accumulate wealth faster, have a more flexible lifestyle and maintain a diverse financial portfolio. As with any successful investment, hard work is required. With residual income, however, that work tends to be upfront. Once your revenue stream is established, the work and time involved is significantly lower than active income sources. With residual income, you’ll secure funds for your future, have a better idea of where you stand financially and enjoy peace of mind knowing you’re maintaining lucrative, long-term investments.  
The challenge I’m facing and, I know it’s a good problem, is that the SF real estate has shot up about 35% in the last couple years. I’m sure you’re experiencing the same thing! So as the net worth is rising, the yield on the total portfolio is going down. Right now, it seems the only way to increase the passive income will be to raise the rent in December and to invest some of that cash in stocks, which I’m nervous to do in this market. Current allocation:

Residual income is calculated as net income less a charge for the cost of capital. The charge is known as the equity charge and is calculated as the value of equity capital multiplied by the cost of equity or the required rate of return on equity. Given the opportunity cost of equity, a company can have positive net income but negative residual income.
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