Examples of Schedule C Tax forms are available from Uncle Fed's Tax Board, Fast Easy Accounting and the New York Times. These sites use hypothetical subjects to give the user an idea of a duly filled-in Schedule C tax form.
Uncle Fed's Tax Board uses a fictitious sole proprietor who owns a fishing boat to illustrate the concept. This example uses various fictitious financial entries in tax computations to fill out the form. The completed example is available for download on the site. Fast Easy Accounting also offers a standardized format of the form for a sole proprietorship. This site provides a rundown of the entries made on the form and explains what each represents. The New York Times uses financial details of a hypothetical family to come up with a sample form.