I’m a 45 year old business owner who also has focussed on diversifying my income streams. I have a short term vacation rental in Florida that I bought for $390k in 2012 and net rental income for the last three years has been growing steadily. 2015 I am at $70k gross right now but should end up at $80-85k with net around $45k plus we use the place about 35 nights a year.

Passive residual income is generated as a result of little or no direct involvement in the actual creation or production of the money. In essence, passive residual income is income that you may have stirred up, but it is still coming in whether you work or not. With income such as this, you are your own boss, or buying of stocks that pays dividends. You set your own hours and the hours that you do put in are not directly involved in the amount of revenue that you create.
In expensive cities like San Francisco and New York City, net rental yields can fall as low as 2%. This is a sign that there is a lot of liquidity buying property for property appreciation, and not so much for income generation. This is a riskier proposition than buying property based on rental income. In inexpensive cities, such as those in the Midwest, net rental yields can easily be in the range of 8% – 12%, although appreciation may be slower.

2. Real Estate: Real estate is #2 for one simple reason, leverage – using smart debt and other people’s money. When looking at real estate rents and the potential for income real estate provides, it is the trifecta of residual income. First, a home or rental property can appreciate, so capital appreciation is the first long-term benefit of owning a home. Second, rent. Other people are paying the mortgage, insurance, property taxes and maintenance while you own that piece of real estate. Third, tax protection. Rental income is taxed at a lower rate than ordinary income and you can depreciate real estate by taking a paper deduction on your annual tax return not to mention expensing the cost of mileage, mortgage interest, and updates to the property. Rentals done right can generate almost double what the stock market can in dividends and interest. The fourth and maybe most hidden, but important benefit is that over time rent’s rise, protecting your cash-flow against inflation, while your mortgage interest can be at a fixed rate potentially.

In equity valuation, residual income represents an economic earnings stream and valuation method for estimating the intrinsic value of a company's common stock. The residual income valuation model values a company as the sum of book value and the present value of expected future residual income. Residual income attempts to measure economic profit, which is the profit remaining after the deduction of opportunity costs for all sources of capital.