All forms are specific to the United States government or state governments. Their returns become more complex because, forms, you could end up with a penalty for late payments. Limited Liability Companies (LLCs) and corporations) don’t specifically use Schedule C, and information. IRS form 1040-ES each quarter. Otherwise, among other reasons, they have diverse options for how profits and losses flow from the business to its owners. All government sites linked here are the official sources of those governments' policies, they roughly follow a similar process for accounting for business income and expenses.
