People who perform services for companies such as Uber, Task Rabbit, Airbnb, DogVacay, and similar companies are generally considered independent contractors. If you are considered an independent contractor, you will report your income and expenses on Schedule C.
Per the IRS webpage Sharing Economy Tax Center:
If you use one of the many online platforms available to rent a spare bedroom, provide car rides, or to connect and provide a number of other goods or services, you’re involved in what is sometimes called the sharing economy.
An emerging area of activity in the past few years, the sharing economy has changed how people commute, travel, rent vacation places and perform many other activities. Also referred to as the on-demand, gig or access economy, sharing economies allow individuals and groups to utilize technology advancements to arrange transactions to generate revenue from assets they possess - (such as cars and homes) - or services they provide - (such as household chores or technology services). Although this is a developing area of the economy, there are tax implications for the companies that provide the services and the individuals who perform the services.
This means if you receive income from a sharing economy activity, it’s generally taxable even if you don’t receive a Form 1099-MISC, Miscellaneous Income, Form 1099-K, Payment Card and Third Party Network Transactions, Form W-2, Wage and Tax Statement, or some other income statement. This is true even if you do it as a side job or just as a part time business and even if you are paid in cash. On the other hand, depending upon the circumstances, some or all of your business expenses may be deductible, subject to the normal tax limitations and rules.
To enter or review information for your business on federal Schedule C Profit or Loss from Business (Sole Proprietorship):