Foundations of Self-Employment Tax: What Freelancers and Contractors Must Understand

When you move from employee to freelancer or contractor, the tax rules change significantly — and many self-employed individuals are blindsided the first time they see a bill that includes both the employee and employer portions of Social Security and Medicare. Understanding the structure of self-employment tax, the role of Schedule C, and the categories of deductible business expenses is the starting point for managing taxes as an independent worker. By the end of this course you will be able to explain why self-employed individuals pay both halves of FICA taxes, calculate the self-employment tax deduction that partially offsets the extra burden, identify which business expenses are deductible on Schedule C, describe the home office deduction and its requirements, explain what the Qualified Business Income (QBI) deduction is and who may benefit from it, and understand why quarterly estimated tax payments are required and how underpayment penalties arise. What you will learn: - Self-employment tax: how the 15.3% rate is calculated and why it applies when no employer withholds - Schedule C structure: revenue, cost of goods sold, and the main expense categories explained - The self-employment tax deduction: how it reduces adjusted gross income and why it exists - Deductible business expenses: advertising, supplies, professional services, software, travel, and meals - The home office deduction: the exclusive-use requirement, the simplified method, and the regular method - Vehicle deductions: standard mileage rate versus actual expenses, and recordkeeping requirements - The Qualified Business Income deduction: a plain-language overview of the 20% deduction for eligible pass-through income - Quarterly estimated taxes: why they are required, how they are calculated, and the safe harbor rules The course is built around readings that move from concept to example, showing how a fictional freelance graphic designer and a fictional independent consultant each apply the same rules to different expense profiles. Reflection prompts ask you to inventory your own expenses and consider how they would be categorized. A summary checklist lists the questions you should be able to answer at the end of each tax year. This course is designed for individuals who are new to self-employment or freelancing and need to understand how their tax situation differs from salaried employment. No prior accounting background is required. This course is informational and educational; it does not substitute for advice from a licensed tax professional familiar with your business structure and jurisdiction.