Let’s say you just decided to sign up for the Chase Sapphire Preferred® card. Once you had the card in hand, you could begin using it for purchases and earning cash back for every swipe. For every dollar you spend on regular purchases, you’ll get 1 percent back in the form of rewards. For dining and travel purchases, on the other hand, you’ll score a smooth 2 percent back.
"The whole idea of Multiple Streams of Income will be a powerfulparadigm shift for most people. Bob Allen gives practical andbeautifully illustrated knowledge on how to do it. Masteringfinancial principles is an important habit in life because it givesus the freedom to focus on what matters most. A valuable read."—Dr. Stephen R. Covey, author of The 7 Habits of HighlyEffective People
But what if ABC evaluates its prospective investments based on the return on investment percentage instead? In this case, the Idaho investment center is currently generating a return on investment of 18%, so making a new investment that will generate a 16% return will reduce the facility's overall return on investment to 17.8% ($196,000 total profit / $1.1 million total investment) - which might be grounds for rejecting the proposed investment.
It’s my only property. I”m living in an SF rental and biding my time for a correction to buy again (maybe). One other thing I do like about the house is that there is dry powder in it that I’m paying zero interest on and can pull out to buy another house. I don’t know a lot of other ways to achieve that. I don’t have a traditional job, so the house is my only source of loans currently which I’ve been using to fund my 4-yo company.
If you happen to have a blog that attracts a large, devoted viewer base each day, then selling branded products on it is an excellent way to make a little extra money. Things like t-shirts, posters, mugs, and bags that feature your brand name, or some witty copy that your niche may find attractive, will definitely find buyers on your site. You can also link up with affiliate marketers to drive more sales if the business seems to be working out.
One of the easiest ways to increase your passive income is to shift your savings to a bank that pays a higher yield on your savings — for example, Discover Bank and EverBank pay almost 1% for your money. Although it doesn’t sound like much (especially in this low interest environment), little things do add up and eventually interest rates will rise.
Creating multiple streams of income does not mean get a second job to supplement your current income. A second job does not provide you with the flexibility and freedom to increase your income. In fact, it can hurt you when you think about it. You are trading time for money and in the long run, you lose. Instead, create something that will allow you to give yourself a pay raise when you need and want it. 

Good suggestions. I have many of these. One word about the “app” idea. I had a great idea related to personal taxes that I tried to get off the ground with my accountant as a partner. I would say it’s difficult to do this unless you have a coder on your team. Hiring someone is not really viable financially unless the app is simple. When we finally got the quote for a coder to write what we wanted (and after doing lots of mock ups ourselves and getting a demo for investors) the estimate was about 750k just to really get started.

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.