Book sales ($36,000 a year): Sales of How to Engineer Your Layoff" continue to be steady. I expect book sales to rise once the economy starts to soften and people get more nervous about their jobs. It's always best to be ahead of the curve when it comes to a layoff by negotiating first. Further, if you are planning to quit your job, then there is no downside in trying to engineer your layoff so you can get WARN Act pay for several months, a severance check, deferred compensation, and healthcare.
The business isn’t an excluded business. Generally, an excluded business means equipment leasing as defined, earlier, under Exception for equipment leasing by a closely held corporation , and any business involving the use, exploitation, sale, lease, or other disposition of master sound recordings, motion picture films, video tapes, or tangible or intangible assets associated with literary, artistic, musical, or similar properties.

Add Leverage (Mortgage) and you greatly increase the ROI especially from the perspective of using Rents (other peoples money) to pay down the mortgage and increase your equity in the property over time. At this point then yes price appreciation is secondary bonus and we have an arguement of how and why Real Estate can be better than Growth Stocks in some scenarios and for some investors.

While all employees can benefit from 401(k) plans right now, the retirement options for Americans have not been improved to suit the ever-changing needs of the elderly. One of the biggest reasons Americans can’t save as they used to is debt. At present, people are in debt even before they are fully employed. If you are in debt like most Americans, then earning passive income is more important than ever. It can help you pay down debt and generally make you more financially secure.

A great source of passive income is advertising dollars from other businesses and people.  If you have a website, blog, or strong social media following, other businesses will start to take notice.  A trick I have learned in this space is that it is much less expensive and faster to go where people already are then to try and create it yourself.  But, if you create it yourself, then others will come to you.  This is how you turn you blog, etc. into passive income.  Let’s say your blog has 300,000 visitors a month, that’s quite the following!  Other businesses and people looking to advertise a product or service would rather come to you and pay you to have their advertising on your blog.  This is less expensive for them since you have already created an audience for them, and great for you since they are paying you for this audience. 

If you have a capital loss on the disposition of an interest in a passive activity, the loss may be limited. For individuals, your capital loss deduction is limited to the amount of your capital gains plus the lower of $3,000 ($1,500 in the case of a married individual filing a separate return) or the excess of your capital losses over capital gains. See Pub. 544 for more information.
Herbert and Wilma file a joint return, so they’re treated as one taxpayer for purposes of the passive activity rules. The same owner (Herbert and Wilma) owns both Healthy Food and Plum Tower with the same ownership interest (100% in each). If the grouping forms an appropriate economic unit, as discussed earlier, Herbert and Wilma can group Plum Tower's grocery store rental and Healthy Food's grocery business into a single trade or business activity.
Why did P2P lending get a liquidity ranking of 6? It is quite possibly the most illiquid investment option you listed. You said you rank liquidity by “difficulty level of withdrawing your money without a massive penalty”, and for Lending Club notes, it’s not only difficult and extremely time consuming to sell all of your notes in their super illiquid market, but you would have to sell your notes at large losses to hope to get others interested in buying your notes. On top of that, it is impossible to withdraw your money any other way other than just waiting for interest/principal to pay off every month until maturity in 3 to 5 years. You can’t just one day tell Lending Club “I want to quit, please give me my money back.” One can even argue that it is less difficult to sell a home (in order to “withdraw” the money invested) than to withdraw all of their money from a P2P loan portfolio because it is very possible to sell a home before 3 to 5 years.

Most credit card companies offer sign-up bonuses to entice you to open a credit account with them. As long as you don’t spend money just to hit the minimum balance and always pay your balance on time, this can have a minimal impact on your credit score while earning you hundreds – or even thousands – of dollars a year. Some of the best travel credit cards offer 100,000 points to new accounts when you meet reasonable spending requirements.
There are basically three types of income: earned, portfolio, and passive. When it comes to filing your tax return, each of these types of income are taxed differently. Therefore, it is worth understanding the difference between the three to minimize your tax burden. Below are the three types of income, how they are categorized, and the tax implications for each.

You don’t have to be a big corporate executive to need an assistant. Filing, emailing, scheduling and organizing the results of your moneymaking ventures takes time. And that's time you don’t want to waste while building your passive income empire. Nor do you want to expend any more time and money training and paying a new employee than you need to. Instead, consider hiring a virtual assistant.
You will get a good gauge of the market when you release your app. It’s analogous to going fishing. You have to cast your app out to see if anything bites. Once you get a few bites, you can start adding a few new features to improve your app passive income. A couple bells and whistles. Finally, start paying attention to feedback. The best way to set yourself up for success with both analytics and feedback are to integrate them both before releasing your app.

Dan Caplinger has been a contract writer for the Motley Fool since 2006. As the Fool's Director of Investment Planning, Dan oversees much of the personal-finance and investment-planning content published daily on Fool.com. With a background as an estate-planning attorney and independent financial consultant, Dan's articles are based on more than 20 years of experience from all angles of the financial world. Follow @DanCaplinger
If you don’t want to write the book yourself, you can also hire a ghostwriter through various online sites like Upwork, Freelancer.com etc. writing is the best passive income ideas for 2018. See my Kindle Direct Publishing Portfolio HERE. Selling your eBook can be a great way to earn passive income forever once it’s released. You need to take significant time to make sure it is high-quality. Also, you will need to spend time promoting your eBook.
1. The batting cage idea is very risky. I’ve seen many of them close over the years and it is not anything close to passive income if you want to keep the business going. You have to continually promote it and target youth leagues, coaches, schools etc to catch all of the new players who grow up and want to play. I’ve played at probably 8 batting cages over the years and 7 of them closed.
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