We’re currently at four and about to add a fifth. The more diverse the less risk. The less risk the lower the risk mitigation needs (ie insurance). We are high income but historically we’ve focused on the two w2 incomes and investment returns. At some early stages in your career focusing on your W-2 might yield better returns. Once you’ve got a certain level marginal gains from raises begins to decline. We’re at that stage where alternative income importance is increasing.
Recently, the residual income (RI) model has become very popular in valuation because it purports to measure "value added" by explicitly taking into account the cost for capital in the income statement. Some proponents of the residual income approach have even suggested that the RI model is superior to the discounted cash flow (DCF) method and consequently, the DCF model should be abandoned in favor of the RI model. The residual income model is seductive because it purports to provide assessments of performance at any given point in time. The claim that the RI model is superior to the DCF model in valuation is puzzling because the RI model is simply an interesting algebraic rearrangement of the DCF model. Since the same information is used in both models, it is not unexpected that both models should give the same valuation results.
Peer-to-Peer Lending: Earn up to 10% in returns by lending individuals, organizations and small companies who don't qualify for traditional financing through peer-to-peer lending platforms like Lending Club. You can lend $100, $1,000, or more to borrowers who meet lending platform financial standards. Like a bank, you'll earn interest on the loan - often at higher returns than banks usually get.
I prefer assets that make me a high return for the lowest amount of work possible (semi-passive involvement). And assets that pay me in several unique ways. Cash flow is only one way RE makes money for me. I also get principal reductions, appreciation, tax advantages (depreciation), and I control the rental increases on a yearly basis. Plus a majority of the capital is provided by the secondary market on 30 year fixed low interest rate debt.
If you can max out your 401k or max out your IRA and then save an additional 20%+ of your after-tax, after-retirement contribution, good things really start to happen. If one is looking for earlier financial independence, such as retiring in their 40s or early 50s, it may be a good idea to skew towards more after-tax savings and investments given one has to wait until 59.5 to withdraw from their 401k or IRA penalty-free.

The bottom line is, it’s smart to have multiple income streams no matter who you are. Why? Because the more ways you can earn money without compromising your integrity, the better off you’ll be. And if you’re self-employed, having multiple income streams is almost essential. Not only will you enjoy a higher income, but you won’t go broke if one stream ends out of the blue.

Investing in coins and collectibles: Buffalo nickels and Spiderman comic books are good examples of coins and collectibles that can rise in value, and thus offer opportunity for passive income investors. You'll need to get up to speed on the value of any coin or collectible under consideration, but once you do so, you're on the way to price appreciation on a commodity you'll be paying a lower price to buy, and will garner a higher price when you sell.

Learn, learn, learn: Develop new skills that you can eventually turn into a side business. Acquire knowledge that you can use to start up a side business or that can help you intelligently invest your money in assets that generate passive income. Passive investments include: residential rental properties, commercial rental properties, TICS, triple net leases, seasonal rentals (beach areas, ski resort areas, lake front areas), equity investments (stocks, bonds, mutual funds), annuities, permanent life insurance, royalty-generating property (timber, oil and gas), boat rentals, etc.
Considering that I have over three dozen ebooks out there, I could likely dedicate an entire post to writing, publishing and marketing an ebook, but I’ll have to save that for a future post, as I know that so many of you have written to me about publishing and ebook sales to try to get some insight. I’ll definitely offer up a thorough guide at a later date.

However, until we get another reset in valuations (I’m calculating a 40% to 50% correction is justified ), I’ve moved largely to the sidelines. Beginning in July 2013, I began slowly reducing equity exposure and am now sitting firm at 40% with the balance in various forms of 5 yr cd’s and short duration bonds. This is down from over 60% when I ramped up to take advantage of the March 2009 lows.
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.