How to Fill Out Schedule C as an Independent Contractor

To fill out Schedule C as an independent contractor, work top to bottom: complete the header lines that identify your business, report your gross receipts in Part I, subtract your business expenses in Part II, handle vehicle costs (Line 9 and Part IV), a home office (Line 30), and any equipment (Line 13 via Form 4562), then carry the net profit from Line 31 to Schedule 1 and Schedule SE on your Form 1040. The form is one page, and the net profit it produces drives both your income tax and your self-employment tax, so every legitimate deduction you enter on it lowers two tax bills at once.

What to Gather Before You Start

You need your Social Security number for Form 1040, or an Employer Identification Number for Line D of Schedule C if you have one.¹ Most solo contractors without employees don’t have an EIN; if you were never issued one, leave Line D blank.

Pull every 1099-NEC you received. Clients who paid you $600 or more during the year are required to send one, and the IRS gets a copy, so your income total needs to line up.² Then get your receipts, bank and card statements, mileage log, and any records of home office expenses in one place.

The Header: Lines A Through J

Line A asks you to describe what you do in plain words (say, “freelance graphic design” or “residential electrical services”). Line B is a six-digit Principal Business or Professional Activity Code, chosen from the chart at the back of the Schedule C instructions; the codes are based on the North American Industry Classification System and let the IRS categorize your line of work.³ Line C is only for a business name different from your personal name.

Line F asks you to choose an accounting method. Almost every independent contractor uses cash: you count income when you receive it and expenses when you pay them.¹ Check the box on Line H if you started or bought the business during the tax year.⁴

Part I: Reporting Income

Line 1 is your gross receipts, meaning the total you collected from clients before subtracting anything.¹ Include cash, checks, electronic payments, and the fair market value of any bartered services. If your 1099-NEC total doesn’t match what you actually received, enter the real number. You may have had clients who paid under $600 and didn’t issue a form, or timing differences between when a payment was sent and when you received it. Just keep the documentation that explains the gap.

Line 2 is refunds you gave back to clients; most service contractors leave it at zero. Line 3 subtracts Line 2 from Line 1. If you sell physical products, complete Part III (cost of goods sold) and bring the result to Line 4, which is subtracted on Line 5. Line 6 is for other business income such as interest on a business bank account or prizes tied to your work.¹ Line 7 adds the pieces together into your gross income.

Part II: Deducting Expenses

Part II holds 20 numbered expense categories on Lines 8 through 27, plus a catchall. The lines most independent contractors use include:

Line 8, advertising: costs for promoting the business, including website ads, printed materials, and online directory listings.
Line 15, insurance: premiums for business policies like professional liability, errors-and-omissions, or business property coverage. Health insurance does not go here.⁵
Line 17, legal and professional services: fees paid to attorneys, accountants, or tax preparers for business work.
Line 18, office expenses: postage, stationery, printer ink, and small software subscriptions.⁵
Line 22, supplies: tangible items consumed in delivering your services that aren’t inventory.⁵
Line 25, utilities: phone and internet bills allocable to business use.

Line 27 is the overflow. It pulls the total from Part V at the back of the form, where you list any deductible expense that doesn’t fit an existing line.⁵ Professional association dues, bank service charges, certification fees, and continuing education costs go here. List each item in Part V with a description and dollar amount, then carry the total to Line 27.

Line 28 sums Lines 8 through 27. Subtract Line 28 from Line 7 to produce your tentative profit on Line 29.

Travel and Meals (Line 24)

Line 24a covers lodging and transportation costs for overnight business travel away from your tax home: airfare, hotel stays, rental cars, and similar costs. Do not put meals on Line 24a.¹ Meals go on Line 24b, and only 50% is deductible.⁶ That 50% applies whether you’re eating alone on a business trip or taking a client to dinner. Track actual meal costs including tax and tip and deduct half, or use the federal per diem meal allowance for the city you traveled to and deduct half of that.

Equipment (Line 13)

When you buy a computer, camera, desk, or similar business asset, you don’t have to spread the deduction over several years. Section 179 lets you deduct the full purchase price in the year you bought and started using the asset, up to an annual limit that adjusts for inflation.⁷ For most independent contractors, that limit is far above what they’d spend in a year. Claim it on Form 4562; the result flows to Line 13 of Schedule C.

Vehicle Expenses: Line 9 and Part IV

If you drive for business, the dollar deduction goes on Line 9 and the supporting details go in Part IV. Pick one of two methods for each vehicle:

Standard mileage rate. For 2026, the IRS rate is 72.5 cents per mile driven for business. Multiply your business miles by $0.725 and enter the result. This method is simpler and works well for most contractors.⁸
Actual expense method. Track every vehicle cost (gas, insurance, repairs, registration, depreciation), then multiply the total by the percentage of miles driven for business. This makes sense when vehicle costs are high relative to your mileage.

Part IV asks for total business miles, commuting miles, and other personal miles for the year. Commuting from home to a regular work location is not deductible. If you work from a home office that qualifies as your principal place of business, drives from that home office to client sites or temporary work locations generally count as business miles. Keep a mileage log. The IRS frequently scrutinizes vehicle deductions, and “I drove a lot” won’t survive a review.

Home Office: Line 30

If you use part of your home regularly and exclusively for business, you can claim a deduction on Line 30.⁵ “Exclusively” is what trips people up. A kitchen table where you also eat dinner doesn’t qualify; a spare bedroom used only as an office does. Two calculation options:

Simplified method. Multiply the square footage of your office (up to 300 square feet) by $5, for a maximum deduction of $1,500. No calculation of actual home expenses, no Form 8829.⁹
Regular method. Calculate the business percentage of your home’s total square footage and apply it to actual costs: mortgage interest or rent, utilities, insurance, repairs, and depreciation. Report the detail on Form 8829; the result carries to Line 30.

The simplified method is fast. The regular method often produces a larger deduction, especially if your office takes up a significant portion of a small apartment. Run both and use the higher one.

Health Insurance Doesn’t Belong on Schedule C

Self-employed health, dental, and vision premiums are deductible, but not on Schedule C. You calculate the deduction on Form 7206 and report it on Schedule 1 (Form 1040), Line 17.¹⁰ It covers premiums for you, your spouse, and your dependents, and you can’t claim it for any month you were eligible to participate in an employer’s health plan, including a spouse’s employer plan.

Line 31: Net Profit or Loss

Line 29 is your tentative profit (Line 7 minus Line 28). Line 30 subtracts the home office deduction if you claimed one. Line 31 is your net profit or loss for the year.⁵

If you sell products and carry inventory, complete Part III before finishing Line 31. Part III walks through beginning inventory, purchases, and ending inventory to produce cost of goods sold, which feeds Line 4.

The Line 31 figure goes two places on your return: Schedule 1 (Form 1040), Line 3, where it becomes part of adjusted gross income, and Schedule SE, Line 2, where it becomes the base for self-employment tax.¹ If you operated at a loss, it generally offsets other income on your return, though the IRS may apply at-risk or passive activity rules if your business involves significant investment capital or you didn’t materially participate.

Records That Back Up the Numbers

Digital records are acceptable. The IRS treats electronic receipts, bank statements, and scanned documents the same as paper originals, provided they show the payee, amount, date, and business purpose.¹¹ For vehicle expenses, keep a mileage log with the date, destination, business purpose, and miles for each trip. For meals, note who you met with and what business you discussed.

Keep the records at least three years from your filing date, which is the general audit window. If you underreport gross income by more than 25%, that window extends to six years, and if you never file, there’s no cutoff at all.¹² A spreadsheet, an app, or a labeled folder of scans all work; “I’ll remember later” doesn’t.

1
Internal Revenue Service. 2025 Instructions for Schedule C (Form 1040)
2
Internal Revenue Service. Instructions for Forms 1099-MISC and 1099-NEC (04/2025)
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Internal Revenue Service. Instructions for Schedule C (Form 1040) – 2024
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Internal Revenue Service. 2025 Schedule C (Form 1040) Profit or Loss From Business (Sole Proprietorship)
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Internal Revenue Service. Instructions for Schedule C (Form 1040) (2025)
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Internal Revenue Service. Income and Expenses 2
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Internal Revenue Service. Depreciation Expense Helps Business Owners Keep More Money
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Internal Revenue Service. 2026 Standard Mileage Rates
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Internal Revenue Service. Simplified Option for Home Office Deduction
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Internal Revenue Service. Instructions for Form 7206
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Internal Revenue Service. What Kind of Records Should I Keep
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Internal Revenue Service. How Long Should I Keep Records