Schedule C: Reporting Business Income for Freelancers

In the most recent IRS data available, 29.3 million Americans filed Schedule C returns as nonfarm sole proprietors. That's nearly 1 in 10 adults running a business without a corporate structure, reporting income and expenses on a two-page form that determines both their income tax and their self-employment tax.

If you're a freelancer, gig worker, independent contractor, or sole proprietor, Schedule C is the form that tells your business's financial story. It's also one of the most misunderstood forms in the tax code.

30-Second Summary: Schedule C (Form 1040) reports business profit or loss for sole proprietors. List gross income on Line 1, subtract expenses in Part II, and the resulting net profit (Line 31) flows to both your income tax return and Schedule SE for self-employment tax. One Schedule C per business.

What Schedule C Is (and Isn't)

Schedule C is the IRS form where sole proprietors report business revenue and expenses. It's an attachment to your personal Form 1040, not a separate business return.

Who files Schedule C:

• Freelancers and independent contractors
• Sole proprietors (including single-member LLCs taxed as sole proprietorships)
• Gig workers (Uber, DoorDash, Etsy, etc.)
• Statutory employees (checked on their W-2, Box 13)
• Anyone with self-employment income not reported through a partnership or corporation

Who doesn't file Schedule C:

• S-Corp or C-Corp owners (they file separate corporate returns)
• Partners in a partnership (income flows through Schedule K-1)
• Hobby income earners (reported on Schedule 1, Line 8j)

If you run two distinct businesses (say, freelance writing and an Etsy shop), you file a separate Schedule C for each. Different business activity codes, different forms.

The Five Parts of Schedule C

The form has five parts, but most freelancers only use the first two. The rest sit there looking intimidating, mostly unused. Don't let them scare you.

Part I: Income (Lines 1-7)

Line 1: Gross receipts or sales. This is your total business revenue. All of it. Every 1099-NEC you received, plus any income that didn't come with a form. Cash jobs. Small projects under $600. Bartered services. If a client paid you, it goes here.

Line 2: Returns and allowances. Did you refund a client? Subtract it here.

Line 4: Cost of Goods Sold (COGS). Only relevant if you sell physical products. Service-based freelancers typically skip this. (If you do have COGS, Part III walks you through the inventory calculation.)

Line 7: Gross income. Your revenue minus returns and COGS. For most service providers, this is the same as Line 1.

Part II: Expenses (Lines 8-27)

This is where the tax savings happen. Every dollar of legitimate expense you list here reduces your taxable profit.

The IRS provides 20 specific expense categories on lines 8 through 27. You don't have to use them all. You only fill in the ones that apply.

Common lines for freelancers:

• Line 8: Advertising (website costs, Google Ads, business cards)
• Line 17: Legal and professional services (accountant, lawyer)
• Line 18: Office expense (supplies, postage)
• Line 22: Supplies (raw materials, art supplies, production costs)
• Line 25: Utilities (business portion of electric, internet)
• Line 27: Other expenses (software subscriptions, professional development, coworking)

Line 30: Business use of home. This is where the home office deduction goes, whether you use the simplified method ($5 per square foot, up to 300 sq ft = $1,500 max) or the actual expense method.

Line 31: Net profit (or loss). This is the bottom line. Gross income minus total expenses. This single number determines your tax liability.

Parts III-V

Part III: Cost of Goods Sold. For businesses that sell physical products, this section calculates inventory costs. If you're a service provider with no inventory, skip it.

Part IV: Information on Your Vehicle. If you're deducting vehicle expenses, the IRS wants details: total miles driven, business miles, commuting miles, and whether you have supporting documentation.

Part V: Other Expenses. A continuation of Line 27. List any business expenses that don't fit the specific categories in Part II.

Worked Example: Sarah, Freelance Graphic Designer

Sarah, 31, is a single filer in Portland, Oregon. She runs a one-person design business. Here's her 2025 Schedule C:

Part I: Income

Part II: Expenses

The Bottom Line

Line 31: Net profit = $72,000 − $4,300 = $67,700

This $67,700 goes two places:

1. Schedule 1, Line 3 (feeds into Form 1040 for income tax)
2. Schedule SE (for self-employment tax)

Self-Employment Tax Flow

• Net earnings for SE: $67,700 × 92.35% = $62,521
• SE tax: $62,521 × 15.3% = $9,566
• Deductible half: $4,783

Sarah can subtract $4,783 from her gross income as an adjustment, lowering her AGI before calculating income tax. The $4,300 in business expenses already reduced her SE tax base, saving her about $658 in SE tax alone.

Common Deductions That Freelancers Miss

Standard mileage rate. At 70 cents per mile in 2025, driving to client meetings, the office supply store, or the post office adds up fast. A freelancer driving 8,000 business miles deducts $5,600. You must choose between standard mileage and actual vehicle expenses; you can't use both for the same car.

Health insurance premiums. If you're self-employed and pay for your own health insurance, the premiums are deductible. This isn't a Schedule C deduction (it goes on Schedule 1 as an adjustment to income), but it still reduces your AGI and income tax.

Retirement contributions. Solo 401(k) and SEP IRA contributions reduce income tax but not self-employment tax. Still, the savings can be substantial. See our guide to small business tax deductions for the full list.

Professional development. Courses, conferences, books, and certifications related to your business are deductible. That $400 online design course? Business expense.

The Hobby vs. Business Distinction

The IRS distinguishes between a business (which generates deductions and can show losses) and a hobby (which can't). A few key factors:

• Do you depend on the income for your livelihood?
• Do you keep separate financial records?
• Have you shown a profit in three of the last five years?
• Do you put in consistent time and effort?

If the IRS reclassifies your "business" as a hobby, you lose your Schedule C deductions. The income is still taxable, but you can't offset it with expenses. That's the worst possible outcome.

Running your freelance work like a business (separate bank account, detailed records, regular hours, real marketing efforts) protects you. It's not just about looking professional to clients. It's about looking legitimate to the IRS.

Your Next Move

1. Separate your business and personal finances. Open a business checking account at Chase, Novo, or your preferred bank. Run all business income and expenses through it.

2. Track expenses in real time. Don't wait until tax season to reconstruct a year's worth of spending. QuickBooks Self-Employed, Wave (free), or even a simple spreadsheet updated weekly will do.

3. Know your business code. Schedule C asks for a "Principal Business or Professional Activity Code." For graphic designers, it's 541430. For writers, 711510. Find yours in the Schedule C instructions on IRS.gov.

4. File a separate Schedule C for each business. Drive for Uber and sell on Etsy? That's two Schedule C forms with different business codes.

5. Run your numbers through our tax calculator to estimate how your Schedule C profit affects your total tax liability. Understand what you'll owe for both income tax and the standard deduction's role in reducing it.