Every line explained, every deduction covered, with worked examples for freelancers, 1099 contractors, gig workers, and sole proprietors. Written for the 2026 tax year.
Schedule C is the form sole proprietors and single-member LLCs use to report business income and expenses on their personal tax return (Form 1040). You need to file it if net self-employment earnings are $400 or more during the tax year. That threshold is gross income minus business deductions — not gross income alone.
You'll file Schedule C if you're a:
A separate Schedule C is required for each distinct line of business. A photographer who also runs a side e-commerce store files two Schedule Cs, one for each.
Part I is short — five real lines plus subtotals.
| Line | What goes here |
|---|---|
| 1 | Gross receipts or sales. Total of every dollar your business invoiced and collected, including amounts on 1099-NECs and 1099-Ks. If a client paid you $5,000, the full $5,000 goes here even if you owe a subcontractor $2,000 from it. |
| 2 | Returns and allowances. Refunds you issued to customers. Most service businesses will be $0. |
| 3 | Line 1 minus line 2. |
| 4 | Cost of goods sold (calculated in Part III). Service businesses with no inventory leave blank. |
| 5 | Gross profit (line 3 minus line 4). |
| 6 | Other income. Interest from business bank accounts, scrap or fuel tax credits, recapture of depreciation, prize money won as part of business activity. Most freelancers leave blank. |
| 7 | Gross income (lines 5 + 6). |
The biggest mistake here: reporting only what shows up on 1099-NECs. Clients are only required to issue a 1099 if they paid you $600 or more, and they often don't issue them at all. You're required to report every dollar of business income whether or not a 1099 was issued. The IRS gets the 1099 copies and matches them against your return — if your reported gross is less than the 1099 total, expect a notice.
This is where most of the work happens. The form lists 20+ standard categories plus a catch-all "other expenses" line. Each line accepts the total dollar amount you spent in that category during the year.
| Line | Category | Notes |
|---|---|---|
| 8 | Advertising | Facebook/Google ads, sponsorships, business cards, website hosting if it's marketing-focused, SEO services. Lead-gen software counts here. |
| 9 | Car and truck expenses | Either the standard mileage rate (70¢/mi for 2026) or actual expenses. Most freelancers use standard. Complete Part IV. |
| 10 | Commissions and fees | Sales commissions paid to non-employees, referral fees, platform fees (e.g. Etsy, Upwork) if not already netted from gross. |
| 11 | Contract labor | Subcontractors and 1099 workers. You must issue them a 1099-NEC if you paid $600+ — see our 1099-NEC guide. |
| 12 | Depletion | Mining/timber — almost no freelancer uses this. |
| 13 | Depreciation and Section 179 | Equipment, computers, furniture, vehicles over $2,500. See depreciation section below. |
| 14 | Employee benefit programs | Health insurance, retirement plans you offer to employees (not yourself — that's separate). |
| 15 | Insurance (other than health) | Business liability, errors & omissions, professional indemnity, commercial vehicle, equipment insurance. Health insurance is on Schedule 1 line 17, not here. |
| 16a / 16b | Interest — mortgage / other | Business loan interest, credit card interest on business charges. Keep business and personal cards separate so the audit trail is clean. |
| 17 | Legal and professional services | Accountant, CPA, bookkeeper (yes, this software is deductible — see line 18), attorney for business matters, business-formation services. |
| 18 | Office expense | Postage, office supplies under $200, small admin tools. Software subscriptions usually go on line 22 or 27a. |
| 19 | Pension and profit-sharing plans | Employer contributions to employee plans. Your own Solo 401(k) and SEP-IRA contributions go on Schedule 1 line 16, not here. |
| 20a / 20b | Rent or lease — vehicles / other property | Office rent, equipment leases, coworking memberships, storage units. Home-office rent goes on line 30, not here. |
| 21 | Repairs and maintenance | Fixing equipment, computer repairs. Improvements that extend the useful life of an asset are depreciated, not expensed. |
| 22 | Supplies | Consumable items used in your work — paint, lumber, fasteners for a tradesperson; props for a photographer; printer toner, copy paper. |
| 23 | Taxes and licenses | State business licenses, professional licenses, business property tax, payroll taxes you pay (employer share). Federal income tax and self-employment tax never go here. |
| 24a / 24b | Travel / meals | Travel is 100% deductible. Business meals are 50% deductible. Entertainment is not deductible at all post-TCJA. |
| 25 | Utilities | Business phone line, business internet, electricity for a non-home workshop. Home office utilities go through the home office calculation on line 30. |
| 26 | Wages | W-2 wages paid to employees. Owner draws are not wages. |
| 27a | Other expenses (from Part V) | Anything that doesn't fit above — software subscriptions, continuing education, dues and subscriptions, bank fees. |
| 28 | Total expenses | Sum of lines 8 through 27a. |
| 29 | Tentative profit (line 7 minus line 28) | This is your pre-home-office profit. |
| 30 | Home office (Form 8829 or simplified) | $5/sq ft up to 300 sq ft ($1,500 max) using the simplified method, or actual expenses prorated by business-use % via Form 8829. |
| 31 | Net profit or loss | This flows to Schedule 1 line 3 of your 1040 and to Schedule SE for self-employment tax. |
Equipment, computers, furniture, and vehicles over the $2,500 de minimis safe harbor are capitalized and depreciated rather than expensed all at once — unless you elect Section 179 or bonus depreciation to write off the full cost in year one. For 2026:
To qualify for a home office deduction, the space must be used regularly and exclusively for business. A kitchen table you also eat at doesn't qualify; a corner of a bedroom set up only as your workstation does.
Only businesses that sell physical inventory complete this section. Service businesses skip it.
The COGS calculation is: beginning inventory + purchases + labor + materials + other costs − ending inventory = COGS. The result flows to Part I line 4.
Most small e-commerce sellers use the cash method and treat inventory as a non-incidental material under the small-business taxpayer exception (gross receipts under $30M for 2026). Under that exception, you can deduct inventory in the year you pay for it rather than tracking unsold inventory year-end. This is the simpler path for almost everyone selling on Etsy, eBay, Shopify, or Amazon.
Anyone claiming car/truck expenses on line 9 fills this in. The IRS wants to know the date the vehicle was placed in service, total miles for the year, business miles, commuting miles, other personal miles, whether you have another vehicle for personal use, and whether you have evidence supporting your deduction.
Honest answers matter here. The "do you have written evidence?" questions are designed to flag people who don't keep a mileage log — and unsupported mileage deductions are the most commonly disallowed item in self-employment audits. See our mileage tax deduction calculator for the full breakdown.
Itemize anything that didn't fit a numbered line above. Common entries:
Schedule C net profit doesn't just flow to your 1040 — it also flows to Schedule SE, which calculates self-employment tax at 15.3% (12.4% Social Security + 2.9% Medicare) on 92.35% of net SE earnings. For 2026, the Social Security portion caps at the wage base (around $176,100; the precise 2026 figure is set by SSA late in 2025). The Medicare portion is uncapped, plus 0.9% additional Medicare on combined income above $200,000 single / $250,000 joint.
The good news: half of SE tax is deductible above the line on Schedule 1. That doesn't reduce SE tax itself, but it reduces your adjusted gross income and therefore your income tax.
Under Section 199A, most Schedule C filers get an additional 20% deduction on qualified business income, taken on Form 8995 or 8995-A. Phaseouts begin around $191,950 single / $383,900 joint (2024 figures; 2026 brackets indexed), and "specified service trades and businesses" (health, law, consulting, financial services, performing arts, athletics) are subject to harder caps above the phaseout.
Under the inflation-adjusted thresholds you'll fall under, the QBI deduction is essentially automatic and adds 20% on top of your other deductions. Don't forget it — many self-prepared returns miss it entirely.
The defense in all of these cases is the same: clean records, kept in real time, with receipts attached to each transaction. Modern bookkeeping software does this automatically — every bank-feed transaction gets a category, a memo, and an attached receipt photo, ready to export at year-end.
Gross receipts (line 1): $84,000. No returns. Cost of goods sold: $0 (service business). Gross income (line 7): $84,000.
Expenses: $1,200 advertising, $2,800 vehicle (4,000 mi × 70¢), $2,400 software subscriptions on line 27a, $360 phone (60% of $600), $900 home office (180 sq ft × $5), $600 insurance, $1,200 accountant, $480 professional dues. Total expenses: $9,940. Net profit (line 31): $74,060.
SE tax on $74,060: roughly $10,463. Half of SE tax deduction: $5,231 on Schedule 1. QBI deduction: 20% × $74,060 − $5,231 = ~$13,766. Final federal taxable income before personal standard deduction: $74,060 − $5,231 − $13,766 = $55,063.
1099-K from DoorDash: $14,500. Mileage: 18,000 platform miles × 70¢ = $12,600. Phone (40% business): $360. Hot bag and supplies: $80. Total expenses: $13,040. Net profit: $1,460. SE tax: ~$206. Half SE deduction: $103.
Note that gross income is fully taxable as ordinary income on top of the W-2 wages, but the mileage deduction nearly wipes out the platform earnings. Without a mileage log, this driver would owe tax on the full $14,500.
Gross receipts: $42,000. Purchases of materials/finished goods (treated as supplies under the small-business exception): $18,000. Etsy fees: $4,200 (line 10 commissions). Packaging/shipping: $2,800 (line 22). Photography props: $400 (line 22). Home studio (200 sq ft simplified): $1,000. Net profit: $15,600.
The hardest part of Schedule C isn't filling out the form — it's reconstructing 12 months of business activity into the right categories on April 14th. PayStream Pro handles this in three ways:
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Anyone who operates a business as a sole proprietor or single-member LLC and has $400 or more in net self-employment earnings during the tax year. That includes freelancers, 1099 contractors, gig workers, side-hustle earners, and Etsy/eBay sellers operating with a profit motive.
Schedule C-EZ was retired after tax year 2018. Everyone files full Schedule C now, regardless of business size. Most lines are simple and many will be zero or blank — the form is shorter in practice than it looks.
No. A sole proprietor with no employees can file Schedule C using their Social Security Number. An EIN is required if you have employees, file excise tax returns, or want to keep your SSN off W-9s sent to clients. EINs are free at irs.gov and take about 10 minutes to obtain.
Any expense that is both ordinary (common in your line of business) and necessary (helpful and appropriate). Common categories include supplies, software, professional services, advertising, business meals (50% deductible), travel, vehicle expenses, home office, insurance, and contract labor. Personal expenses are never deductible, even if paid from a business account.
Yes. Self-employment tax is 15.3% on net SE earnings (12.4% Social Security up to the wage base, 2.9% Medicare with no cap, plus 0.9% additional Medicare above $200,000 single / $250,000 joint). Half of SE tax is deductible above the line on Schedule 1, which reduces income tax but not SE tax itself.
Schedule C is simpler and almost always correct for net SE income under ~$60,000. Above that, the S-corp election can save SE tax on the portion of profit taken as distribution (after a reasonable salary). The crossover depends on state filing costs, payroll complexity, and reasonable-salary requirements. Run the numbers with a CPA before electing.
For three years from the return's due date (six years if you under-report gross income by more than 25%), keep: bank and credit card statements, receipts for every deductible expense, invoices issued to clients, 1099-NECs and 1099-Ks received, mileage logs, home office measurements, and asset purchase records for depreciation. Digital receipts attached to each transaction in your books are easier to defend than a shoebox.
Only the business-use percentage. If you use your phone 70% for business, deduct 70% of the bill. A second phone used exclusively for business is 100% deductible. The IRS generally expects a documented basis for the percentage you claim, not a round 100%.