28. Subscription – If you think of something valuable (newsletter, online magazine, etc.) that you can consistently offer on a certain basis (weekly, monthly, etc.), you may want to offer a subscription service. This could be a fee charged each time your product is sent out or on a monthly basis. Either way, this has to be something that your customers can only get by subscribing to your website.
If you offer freelance services or have a physical services business, then creating a blog is a must. On your blog you can write about the services you offer and how they will benefit your clients. Importantly you can add a ‘Services’ page, outlining the services you provide, what they include, and any other important information potential clients may need. This is an effective way to promote your services, generate leads, and increase your revenue.
A service like Paribus* or Earny will help you collect refunds you're owed from stores. This is a great way to potentially put some extra earnings on autopilot because you're using an innovative tool to get a refund you deserve. When you make an on-line purchase at a Paribus monitored store (you can view the retailers they monitor here), Paribus engages with the retailer on your behalf and files a claim requesting a refund. When Paribus succeeds and a retailer issues a price adjustment, you are credited funds directly onto the original form of payment or provided the equivalent amount in store credit. Paribus provides an iOS app with a live feed of savings.
If you're serious about making money online, start a blog. Blogging is one of the easiest and most sustainable income sources. As long as the blog is setup the right way, in the right niche, with the right content targeted at the right audience, and the offer is complementary to the content, you could make a tremendous amount of passive income from a blog.
You can make extra income by becoming a virtual assistant. This is something that I started doing after I created my blog. It doesn’t comprise a LARGE percentage of my extra income, but it is there. I like to be diversified just in case anything does happen to one of my other extra income streams (yes I realize that I am not fully diversified because a lot of my extra income is earned online – just in different ways).
Find a profitable niche. Starting with your interests, write down as many niche ideas as you can. Think about topics people might search online. Ideas include passions (like surfing or body building), fears (like spiders or speaking in front of crowds) and problems (like getting out of debt). Do keyword research to see it others are interested in the topic. Find out if a domain name is available that matches the keyword 100 percent. 
If you have a background in a specific field, you may find there is a demand for writing industry papers in your area of expertise. For example, there are often adverts for doctors, lawyers, nutritionists, and business experts from particular niches, to write white papers on different subject areas. These are well paid jobs that you will need to stake your reputation on, but that can often be worked on from the comfort of your own home.
Skyword.com is a great way for established writers to make a good chunk of extra change. When you sign up, you create a profile and add writing samples. Then the folks at Skyword will assign you stories based on your portfolio and online success. Once you start writing for the service, you can make some good money. “Fluffy” peices pay about $25 to $50, while more in-depth articles can pay up to $400 to $500 each.
…Marketing an eBook is definitely the hardest part. Ebooks have exploded in popularity and the market is unfortunately saturated with crap from people who thought they could write a quick eBook, put it on an affiliate network, and make millions. However, if you CAN find a good way to market (or possibly have others market by having it listed on affiliate networks) then an eBook can be a great way to make some residual income.
If you design a wildly popular app (which is harder than it sounds), you might be pleasantly surprised with the income they generate. Offering one or more apps at the iTunes or Android app store gives your creations wide exposure to prospects. And income can be generated by charging for the app, displaying in-app ads, or charging for in-app features and upgrades.
I think what you’re asking is how you can make extra money to pay your real estate taxes. If that’s the case, it depends on your current financial situation, the amount of your estate taxes, your skills, and more. If you visit the “Make Money” section of our website, we have a few articles with different ideas that may be helpful for your situation: https://www.dollarsprout.com/category/make-money/
Test websites. Remote usability testing means getting paid to navigate a website for the first time and giving feedback to the website owner. Most tests take approximately 15 minutes, and you can get paid up to $10 for each test. A test involves performing a scenario on the client’s website and recording yourself doing it. For example, you might be asked to go through the process of selecting and purchasing an item on a retailer’s website.
With Shopkick, there’s no purchase necessary to earn cash back. In order to make money with Shopkick, all you have to do is download the app, enable your location services, and start earning kicks. You’ll earn points just by walking into a store, and even more points for scanning items or making a purchase. Payout comes in the form of gift cards to your favorite stores, including Walmart, Target, Sephora, and Starbucks to name a few.
If you are a creative type, then you could make money online by designing and selling crafty products on Etsy. Etsy sells a range of beautiful and original items from independent suppliers. Categories range from jewelry, clothes, and accessories, to art, collectibles, and vintage. So if you have some stunning crafty creations, Etsy is the perfect platform from which to sell from.
If you’ve got experience and expertise in a specific area of business, there are hundreds if not thousands of business owners who would love to jump on a phone call and pick your brain. This can be an easy way to make extra money online and to hone your skills to use in your consulting or freelance business. Sites like Clarity.fm let you create a profile where entrepreneurs and business owners can pre-pay to book a phone call with you for a set amount of time. Whether you’re an expert in raising money for startups, building apps, or running a restaurant, you can make extra money selling a few minutes of your time to people in need.
Double check yourself, before you double wreck yourself. Make sure everything you send to a company, whether a résumé, an email or a portfolio, is good to go. Double check your grammar and wording, and for God’s sake use spell check! This is especially important when it comes to the company’s name. Don’t spell their name wrong and be sure to type it how they type it (e.g. Problogger, not Pro Blogger).
Chase Sapphire Preferred® Card – Want an even bigger bonus? Consider the Chase Sapphire Preferred® Card instead. With this card, you’ll earn an amazing 50,000 points after you spend just $4,000 on your card within 90 days. If you turn in those points for cash, they are worth $500! Obviously, you’ll want to pay your balance in full to avoid interest. As long as you meet the minimum spending requirement, this $500 is yours to spend. Plus, this card comes with no annual fee.