Thanks for asking. https://passiveincomemd.com/what-is-passive-income/ gives a good summary of the definition I use. But in brief, it’s income that isn’t proportional to the time you physically put into acquiring it. It doesn’t mean it’s not without work or effort. It’s just that most of the work is done up front and it continues to pay off long after that initial effort. Real estate fits into that box. There’s definitely a spectrum but compared to what we do as doctors, where our compensation is directly linked to our time, most of these things are quite passive.
Residual income is the amount of personal income left after an individual has paid his bills and periodic mortgage payment (expressed on a monthly basis). Residual income is an important consideration for a lender; if a loan applicant shows a large amount of residual income remaining each month, this means the person's current income level is more likely to support the payments associated with an additional loan. Conversely, a minimal amount of residual income is likely to trigger an immediate rejection of a loan application. Residual income tends to increase dramatically later in life, after a person's mortgage has been paid off.
You’ve probably heard of affiliate marketing before – it’s when you earn a commission by promoting a product. The product you promote online should be something you’re knowledgeable about and that you believe is high quality. Common sense, right? You’d be surprised by how many affiliate marketers forget that principle, but that’s a whole other story.

With $200,000 a year in passive income, I would have enough income to provide for a family of up to four in San Francisco, given we bought a modest home in 2014. Now that we have a son, I'm happy to say that $200,000 indeed does seem like enough, especially if we can win the public-school lottery to avoid paying $20,000 to $50,000 a year in private-school tuition.
I've got a $185,000 CD generating 3% interest coming due. Although the return is low, it's guaranteed. The CD gave me the confidence to invest more aggressively in risk over the years. My online interest income has come down since I aggressively deployed some capital at the beginning of the year and again during the February market correction. You'll see these figures in my quarterly investment-income update.
Residual income is income that a person continues to make after the work he has put into a project has been completed. Residual income is different from linear income in that linear income refers to someone’s salary. Salaries are paid based on the number of hours someone works in the present, rather than the royalties someone can earn on work that was done in the past. To explore this concept, consider the following residual income definition.

Track Your Wealth For Free: If you do nothing else, at the very least, sign up for Personal Capital’s free financial tools so you can track your net worth, analyze your investment portfolios for excessive fees, and run your financials through their fantastic Retirement Planning Calculator. Those who are on top of their finances build much greater wealth longer term than those who don’t. I’ve used Personal Capital since 2012. It’s the best free financial app out there to manage your money.
Economic value added (EVA) is a measure of a company's financial performance based on the residual wealth calculated by deducting its cost of capital from its operating profit, adjusted for taxes on a cash basis. EVA can also be referred to as economic profit, as it attempts to capture the true economic profit of a company. This measure was devised by management consulting firm Stern Value Management, originally incorporated as Stern Stewart & Co.
Fundrise – With a minimum investment of just $500, investors of all types can make crowd-funded real estate investments through Fundrise. This means you get the benefits of being a landlord without actually having to deal with owning or managing the properties yourself. Even though we own 2 rental properties, we recently began investing in Fundrise ourselves. We love it because there is no “accredited investor” requirement, making it far more accessible for the average person than the other two options below. Follow the link above to learn more, or read our full review here.
We pitched to an angel investor group. They were very excited about the idea but wanted to know who amongst us (doctor, accountant, salesman) was doing the coding. When they heard we were outsourcing it, the wind went out of their sails immediately. They did want to meet with us again once we brought a coder on board but that person proved elusive to find. Coders in our area are looking for the steady paycheck, not willing to gamble on a startup.
If you're looking to get started in real estate, look at a crowd funding solution like RealtyMogul. It works similar to LendingClub - you commit as little as $5,000 towards a property. When the property is fully funded, you become an owner, and will receive your share of the earnings and appreciation in the property.  Check out RealtyMogul to learn more. 
×