Schedule C Basics for Freelancers

Updated April 2026 · 8 min read

Schedule C is the form where freelancers, sole proprietors, and single-member LLC owners report their self-employment income and expenses. It attaches to your Form 1040 and feeds the SE tax calculation on Schedule SE. Get it right and you keep money. Get it wrong and you either overpay (most common) or trigger an audit (less common but worse).

Who files Schedule C?

• Sole proprietors (most freelancers default to this).
• Single-member LLC owners who haven't elected corporate taxation.
• Statutory employees (limited cases — see Form W-2 box 13).
• Anyone earning $400+ in net self-employment income in a year.

Multi-member LLCs and partnerships file Form 1065, not Schedule C. S-corps file Form 1120-S. C-corps file 1120. If you're a single-member LLC and have done nothing special with the IRS, you're a "disregarded entity" — file Schedule C.

The structure of Schedule C

The form has five parts. Most freelancers only fill out the first three.

• Part I — Income. Gross receipts, returns, and a single net "gross income" number.
• Part II — Expenses. The big section. 27 categorized expense lines plus "Other expenses" at the bottom.
• Part III — Cost of Goods Sold. Only relevant if you sell physical inventory.
• Part IV — Vehicle info. If you claim mileage on Line 9, fill this in.
• Part V — Other expenses. Itemize anything that didn't fit a Part II category.

Part I: Reporting income

Add up every dollar that flowed into your business in the calendar year. This includes:

• 1099-NEC forms you received from clients (most common).
• 1099-K forms from PayPal, Stripe, Etsy, Uber, etc. (over $5,000 threshold in 2025; lower in future years).
• Cash and check payments — these don't trigger 1099s but you still owe tax on them.
• Crypto received as payment for services (taxable at fair market value when received).

You report gross income, then subtract returns and allowances (rare for service businesses). The net number flows to Part II.

Part II: The expense lines that matter

Most freelancers use only a handful of these lines. The big ones:

• Line 8 — Advertising. Ads, SEO services, business cards, sponsored content.
• Line 9 — Car and truck expenses. Either standard mileage ($0.70/mi in 2026) or actual expenses. Pick one and stick with it.
• Line 11 — Contract labor. Money paid to other contractors. Issue them 1099-NECs if over $600/year.
• Line 13 — Depreciation. Big purchases (computers, equipment) spread over multiple years. Section 179 lets you expense up to ~$1.16M in year 1.
• Line 17 — Legal and professional services. Lawyer, accountant, bookkeeper.
• Line 18 — Office expense. Stationery, postage, small supplies.
• Line 22 — Supplies. Materials consumed in the course of business.
• Line 24a/24b — Travel and meals. 24a is travel away from home overnight. 24b is business meals (50% deductible).
• Line 25 — Utilities. Internet, phone, electric — only the business portion.
• Line 27a — Other expenses. Itemized in Part V.

Home office deduction (separate)

Home office expenses get reported on Form 8829, then flow to Schedule C Line 30. There are two methods: simplified ($5/sq ft up to 300 sq ft, max $1,500) or actual (percentage of rent/utilities/insurance based on home office square footage). See our home office deduction guide.

Common mistakes that cost money

• Skipping legitimate deductions. Most new freelancers under-deduct. Software subscriptions, courses, conference fees, professional dues — all deductible.
• Mixing personal and business. One business bank account, one business credit card. Reconstructing personal-account spending at year-end is a nightmare.
• Wrong principal business code. Top of Schedule C asks for a 6-digit code. Use the IRS list — pick the closest match. Wrong codes can flag returns.
• Aggressive home office. The space must be exclusively used for business. A couch in the corner of a living room doesn't qualify.
• Not tracking mileage in real time. Reconstructing months later via Google Maps history works, but a contemporaneous log holds up better in audit.

Net profit flows to two places

The bottom line of Schedule C — Line 31 net profit — feeds two downstream forms:

1. Schedule SE. Calculates your 15.3% self-employment tax. Full SE tax breakdown here.
2. Form 1040 Line 8a. Adds your business income to your total income for federal tax bracket calculation.

Software vs. by-hand

Most freelancers use software (TurboTax Self-Employed, H&R Block, FreeTaxUSA, TaxAct) or work with a CPA. By-hand filling is possible — the IRS publishes the form free at irs.gov — but software catches missed deductions and warns about audit triggers. Your time is worth more than $50.

The bottom line

Schedule C is just two parts: how much money came in, how much you spent on the business. The categories are mostly self-explanatory. Where freelancers leave money on the table is forgetting deductions — keep a single business bank account, log mileage as you drive, and revisit the expense lines once a quarter so you remember everything by April.