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.
Finally, I imagine the biggest debate with my ranking is Creating Your Own Product as the #1 passive income source. If most people have never created their own product, then it’s easy to give it a thumbs down. There won’t be much complaint about Private Equity Investing being in last place because most people are not accredited investors. But given I believe that plenty of people can create their own product if they try, pushback is inevitable because a lot of people simply don’t try!
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.

Acorns: Acorns is a great way to start investing and building wealth. As it turns out, Acorns will pay you $5 to start investing with them for as little as $1. That’s a 500% return, plus it’s probably time you started investing for your future. They even have features like round-up and found money that allows you to get free money from places you already shop at.
This can be a little easier said than done, but if you have a large social media following, you can definitely earn money promoting a product or advertising for a company. You can even combine this with different marketing campaigns if you are an influencer and have your own blog (advertisement + affiliate income). This is how many bloggers make money! Again, it is not 100% passive but once set up correctly and then scaled, can be surprisingly lucrative.
eBay is, of course, the biggest and most popular auction and shopping site out there. You pay a small insertion fee to list your product (starting from 10 cents) and a small portion of the selling price (10%) if your item sells. Currently, insertion fees for your first 50 listings per calendar month are free. Also, if you are planning to sell on regular basis, you may want to consider setting up an Ebay store. Among other things, this will allow you to list your products at reduced rates.
Dividend Income: Dividend income is wonderful because it is completely passive and is taxed at only 15% if you are in the 25%, 28%, 33%, and 35% income tax bracket. If you are in the 39.6% income tax bracket you will pay a 20% tax on your dividends. My dividend income portfolio mainly consist of dividend equity and bond ETFs such as DVY, VYM, MUB, TLT, and IEF. Total stock and bond income is a little over $100,000 a year due to a heavy accumulation of stocks and municipal bonds after selling my house.
stREITwise offers a hybrid investment between traditional REIT fund investing and the new crowdfunding. The fund is like a real estate investment trust in that it holds a collection of properties but more like crowdfunding in its management. The fund has paid a 10% annualized return since inception and is a great way to diversify your real estate exposure.
Real estate investing falls somewhere in the middle compared to the other strategies we’ve reviewed in the passive income series. The time commitment involved isn’t as strenuous as blogging but is much more continuous than income investing. Start up costs are much higher than blogging or online stores but the benefit of loans gives it more leverage than investing in stocks or bonds.
If you’re looking for a way to begin gradually replacing your income, these are just some of the best ways you can do it as a physician. Remember the idea of gradual retirement? Passive income streams like the ones mentioned here are perfect ways to allow you to spend more time with family, enjoy your day job more, and, of course, make a little money while you’re at it.
There are a few advantages to taking this approach. First, you get close to 100% of your listed price (minus the transaction fee of your preferred payment gateway). Second, you are not competing with other authors and have the reader’s attention solely on your product. Third, selling your eBook on your own platform is a great opportunity to build a long term relationship with your readers via email. Fourth, you can bundle your eBook with other goodies in order to bump up the value and make it more unique. With so many advantages, it's worth putting up the time and start building your own platform.
That strategy seems waaaayyyy less risky than actively picking stocks of supposedly “reliable” stocks that issue dividends, which could be cut at any time due to shifting industry trends and company performance. Dividend investing feels like an overly complex old-school way of investing that doesn’t have a very strong intellectual basis compared to index investing.
If you have specialized knowledge in a certain topic, you can put together an online course to teach others. For example, if you have experience in real estate investing, you can create an online course “Real Estate Investing 101”. The benefit of an online course is that once you create the course material, you can sell it to as many people as you want.