If you earned money as a sole proprietor or single-member LLC, your business results go on Schedule C, "Profit or Loss From Business." The number at the bottom, your net profit, drives both your income tax and your self-employment tax, so it is the most important figure on a freelancer's return.
The form looks intimidating the first time, but it follows a simple logic: what you earned, minus what it cost you to earn it.
The top section: who and what your business is
The first lines ask for your business name (your own name is fine if you have no separate one), your principal business activity, a six-digit business code from the instructions, and your accounting method. Most freelancers use the cash method, meaning income counts when you receive it and expenses count when you pay them. You will also be asked whether you "materially participated" in the business, which for a hands-on freelancer is almost always yes.
Part I: income
Gross receipts are everything clients paid you during the year, whether or not you received a 1099 for it. A common mistake is reporting only the totals from 1099 forms. Payments below reporting thresholds, cash jobs, and income from clients who never sent a form are all still taxable. Your own invoices and bank deposits are a better source of truth than the forms you receive.
Part II: expenses
This is where most of the work is. Expenses are grouped into categories such as advertising, car and truck expenses, contract labor, insurance, legal and professional services, office expense, supplies, travel, and deductible meals. Anything that does not fit a named line goes under "other expenses" with a short description.
- Car expenses connect to Part IV, where you report vehicle details and business miles
- Equipment that lasts more than a year usually goes through depreciation on Form 4562 rather than straight into supplies
- The home office deduction is entered on its own line near the bottom, after the total of other expenses
The bottom line flows to two places
Net profit from Schedule C carries to your Form 1040 as business income and also to Schedule SE, where self-employment tax is calculated. That is why a missed expense costs you twice: it raises both your income tax and your self-employment tax.
This article is for general education only and is not tax or legal advice. Tax rules vary by jurisdiction, change over time, and depend on your specific situation. Talk to a qualified tax professional before making filing or payment decisions.