Chase Freedom Unlimited lets you earn a $150 bonus after you spend $500 on purchases in your first 3 months from account opening. You earn unlimited 1.5% cash back on every purchase. There is also a 0% intro APR for 15 months from account opening on purchases and balance transfers, then a variable APR of 16.99-25.74%. The balance transfer fee is 3% of the amount transferred, $5 minimum. The cash back rewards will not expire as long as your card account remains open. There is no annual fee.

If you have a spare bedroom, you can find a roommate or list the space on AirBnB for travelers. Having a roommate is the more passive of the two, as being an Airbnb host will require more work in the form of turning over the room between stays. This is a super painless way to earn $500 to $1,000 a month without much effort – you may even be able to cover your mortgage payment with this extra income!
The reality of the situation is that this client doesn’t use a property management company on the rentals. I felt it was stretch to say she was a real estate professional, because she is a physician.  However, before she got her job with the clinic, she did some side work at a hospital for a few months, but never met the limits of material or active participation.  
If the total is more than 500, don’t complete Worksheet A or B. None of the activities are passive activities because you satisfy test 4 for material participation. (See Material participation tests , earlier.) Report all the income and losses from these activities on the forms and schedules you normally use. Don’t include the income and losses on Form 8582.
Investing in rental properties: Another form of real estate investment, rental investments (i.e. becoming a landlord) could steer you down the passive income path of steady monthly rent checks that you can use to pay off a mortgage loan on the rental property. After the mortgage is paid off, those monthly checks go right into your bank account -- potentially for years to come. 
Yes, I meant that the non-working spouse would have to be wiling to become a working real estate professional – which certainly may not be an ideal solution for every couple in every circumstance. But, I was able to raise our kids while managing our rental properties as a licensed real estate professional and was always happy for the bumped-up tax benefits. No doubt, though, I was working!
The average period of customer use of the property is 7 days or less. You figure the average period of customer use by dividing the total number of days in all rental periods by the number of rentals during the tax year. If the activity involves renting more than one class of property, multiply the average period of customer use of each class by a fraction. The numerator of the fraction is the gross rental income from that class of property and the denominator is the activity's total gross rental income. The activity's average period of customer use will equal the sum of the amounts for each class.
This article is great, defining the differences and emphasizing the advantages of passive income. I believe it might be helpful to list some of the tax advantages of passive income vs active income as well. These include and are not limited to: cash-flow, being able to claim depreciation, deductable loan interest, tax free refinancing and deferred taxes on sale of property via 1031 exchanges. It’s the difference between 50% taxed income and potential tax free income.

When I purchase an existing online business, I look for cash flow over the past year and where the money comes from. I want the sources to be more passive so that it does not take a lot of my time. Also, typically I will make an offer that is 18 – 24 months of profit so that I know that I will get my money back within the next two years. I hope that helps!