If the income is for personal services performed partly in the United States and partly outside the United States, you must make an accurate allocation of income for services performed in the United States. In most cases, other than certain fringe benefits, you make this allocation on a time basis. That is, U.S. source income is the amount that results from multiplying the total amount of pay by the fraction of days in which services were performed in the U.S. This fraction is determined by dividing the number of days services are performed in the United States by the total number of days of service for which the compensation is paid.
This is a venture that is growing rapidly. You can create videos in just about any area that you like — music, tutorials, opinions, comedy, movie reviews — anything you want . . . then put them on YouTube. You can then attach Google AdSense to the videos, which will overlay your videos with automatic ads. When viewers click on those ads, you will earn money from AdSense.
Income inequality refers to the extent to which income is distributed in an uneven manner. It can be measured by various methods, including the Lorenz curve and the Gini coefficient. Economists generally agree that certain amounts of inequality are necessary and desirable but that excessive inequality leads to efficiency problems and social injustice.[3]

If you’re curious about my own streams of income, I encourage you to check out my income report for an in-depth look. For now, though, I will tell you that I’m currently at twelve streams, beginning with my day job as an anesthesiologist, and ranging from crowdfunding to owning an apartment building, and to this very blog. Ultimately, having these multiple streams of income has proven to be invaluable to me–not only because of monetary value but because they allow me to live the life I want, and I feel I have a hedge against whatever the future might throw at me.
1) If your property is not under rent control, you have the ability to raise rent to market prices with proper warning. In SF, I have to give tenants a one month warning for up to a 10% increase and a two month warning for up to 60%. Rent control limits to an inflation index, usually around 2% a year, which is why initial pricing and tenant turnover is important for better profitability.

These are most of the ways that I use to try and diversify my income. Add them all up and they’re still nowhere near my day job income but they’re getting closer every day. No matter how much you make it’s imperative to start thinking about additional ways to make money. Real estate and investing are some of the best passive sources of income but it’s also important to think of alternative active sources of income. For most people, those two things will never be able to equal your day job pay but secondary active sources could one day replace your day job whether you want it to or not.
One of the things I'm surprised your article doesn't mention is the tax advantages of this type of investment. The depreciation and rehab costs (purchasing distressed properties) can be huge deductions to ones income taxes, which none of the others have. Then, along with the appreciation of real estate, this passive income investment outperforms the notion of maxing out my 401k as well.

Flynn, who blogs at Smart Passive Income and discusses his secrets at the Smart Passive Income podcast, defines passive income as “building online businesses that take advantage of systems of automations that allow transactions, cash flow and growth without requiring a real-time presence. We don’t have to trade our time for money one to one. Instead, we invest our time upfront, creating valuable products and experiences for people, and we reap the benefits of that time invested later,” he says, adding, “It’s not easy. I just want to make sure that’s clear.”
Developing passive income is different. With the exception of one of my passive income streams (cryptocurrency mining), all of the others require real, hard work. Truly, I understand the barriers for people getting into building alternative income streams. I would say that most people WANT passive income, but truly aren’t willing to put in the blood, sweat, and tears to make it happen.
Sell an eBook Online – Self Publishing is mainstream today. When you purchase an eBook off of Amazon there’s a pretty good chance you’re buying a self-published book. Self-publishing is also ridiculously easy. I tried this a few years ago and couldn’t believe how simple the process was. To self-publish a book you’ll first need to write and edit it, create a cover, and then upload to a program such as Amazon’s Kindle Direct Publishing. Don’t expect instant success though. There will need to be a lot of upfront marketing before you can turn this into a passive income stream.
Jennifer Barrett, chief education officer at Acorns and editor-in-chief of Grow, agrees with Goudreau. "Developing steady passive income streams can be a great way to supplement your regular paycheck and boost your bottom line," she tells Bustle. "Just be sure to do your homework ahead of time so you're aware of the costs and risks involved and realistic about the income you can expect. Investing regularly in the stock market can provide earnings over time from compounding market returns. But there are also ways to create steady streams of passive income that pay out at regular intervals — from investing in stocks that pay dividends and bonds that pay interest to investing in a rental property or renting out your own home."
This is mostly passive once you have it all set up, but it does take a lot of work at the beginning. Real estate investing also requires occasional maintenance. Currently, we invest in a couple of rental properties and earn about $500 profit from each per month. You can read more about my rental properties at MoneySmartLife.com: How and Why I Became a Landlord.

Based on my initial experience of passive income, I feel real that real estate is best vehicle to build long-term investment. I live in Los Angeles and was able to cash flow my first rental property. What are you thoughts about starting out to build a passive income portfolio? I have utilized Lendingclub, online savings, and a small dividend/bond portfolio.

What I did:The first two years of work in NYC was brutal. I told myself there was no way I could work on Wall St for my entire career because I’d probably die from heart failure by age 40. Having an early death in my mind willed me to save 50%+ from the first year onward and devise a CD, real estate, and stock investment distribution system for my savings every year. I thought about starting this site for at least a year before I hired someone from Craigslist to give set me up and push me forward. Hiring someone to get started is totally worth it if you are a master procrastinator. You can now learn how to start your own site with my step-by-step guide to save yourself time and money. 
Official development assistance to Ethiopia has been increasing steadily since 2000. Several donors are active in Ethiopia, with external aid of $3.7 billion in 2015. Both the government and the majority of international partners are keen to deepen the harmonization process in the spirit of the Paris Declaration (2005) and Accra Agenda for Action (2008). Ethiopia is a pilot country for the Organization for Economic Co-operation and Development Assistance Committee harmonization agenda, and for the European Union’s initiative on donor division of labor. Partners are currently considering how to build on this progress in light of the Accra Agenda.
* Freelance writing: Quality freelance writing takes tremendous effort. Ironically, the better the quality of your writing, the more you don’t want to freelance and just keep the articles for your own site. Freelancing is a great way to earn side income, however, it’s not really for me. I’ll probably take on one or two freelance jobs maximum per year and write no more than four articles a month elsewhere.

An employee's main job location (principal place of work) is usually the place where the employee spends most of his or her working time. If there is no one place where most of the work time is spent, the main job location is the place where the work is centered, such as where the employee reports for work or is otherwise required to base his or her work.