For example, gig economy workers who make money freelancing for multiple clients while also moonlighting as an Uber or Lyft driver should track all income and expenses separately. That means keeping accurate records of any money paid directly by clients and keeping track of income reported on documents such as Forms 1099-MISC and 1099-K. These forms are issued when self-employment income exceeds $600 (1099-MISC) and when a contractor is paid through credit- and debit-card payment processors (1099-K). Come tax time, fill out a Schedule C for every company or client who has paid you to report all of the income you earned.