The United States Internal Revenue Service categorizes income as active income, passive income, or portfolio income.[1] It defines passive income as only coming from two sources, or "passive activities": rental activity or "trade or business activities in which you do not materially participate."[2][3] Other financial and government institutions also recognize it as an income obtained as a result of capital growth or in relation to negative gearing. Passive income is usually taxable.
But, it took me a while to get to that point. Where I once worked in my financial planning office on most days, I started by testing things out with a few days per month away from the office at first. From there, I began working remotely 2-3 days per week, then 4-5 days per week, and so on. Eventually, I was able to run my business remotely without ever having to show up for work.
This article was co-authored by Michael R. Lewis. Michael R. Lewis is a retired corporate executive, entrepreneur, and investment advisor in Texas. He has over 40 years of experience in business and finance, including as a Vice President for Blue Cross Blue Shield of Texas. He has a BBA in Industrial Management from the University of Texas at Austin.
Choose stocks with high dividends. Typically, the companies that pay the highest dividends are older, more established companies. These companies no longer need to reinvest their income into growing the company, so they are free to allocate the money to investors in the form of dividends. Telecommunication companies, Real Estate Investments Trusts (REITs), and utility companies, in particular, are known for having high dividend payouts.[3] 

passive income vending machines

You don’t have to invest individually to take advantage of dividend paying stocks (i.e. investing in an ETF like DVY, which currently has a 3.16% dividend yield – almost 4%). And while your math is indeed correct, there is more to dividend paying stocks that just the math. The reason the companies pay dividends is typically because of their underlying strength, steady growth, etc. These companies can be good investments for the long run. As such, it might not make sense to sell.
Certain posts that you create can work like passive income for you.  For example, if you have display advertising on your blog, then this is purely passive income, though you do need to keep creating content for returning visitors and subscribers.  It takes a long time before you can monetize a blog, at least 6 months.  This is why a lot of people drop out of blogging before 6 months, because it is a lot of hard work.

Can you make monthly income from stocks?

Decide to invest in dividend stocks. Dividend stocks pay out a portion of the company's profits to shareholders. These dividends are paid at regular intervals, so they produce a regular income stream. Investors who hold a large amount of this type of stock are known as "income investors" because they prioritize regular dividends over stock value growth.[1]

How do I generate passive income?