Schedule C - Profit or Loss From Business

Schedule C, Profit or Loss From Business, is the IRS form sole proprietors and single-member LLCs use to report income and expenses from a business they operate. You must file Schedule C if you carry on a trade or business as a sole proprietor or are the single owner of a limited liability company that has not elected corporate taxation, and you have income or deductible expenses from that activity. The form calculates your net profit or loss by subtracting business expenses from gross income, and the result flows to your Form 1040 and to Schedule SE for self-employment tax. Independent contractors and freelancers who receive Form 1099-NEC typically report that income on Schedule C. Hobby income, by contrast, is reported differently because hobbies are not businesses. Because the net profit drives both your income tax and self-employment tax under Internal Revenue Code Section 162, accurate reporting of business income and deductible expenses on Schedule C is essential.

Schedule C lets you deduct the ordinary and necessary expenses of running your business under Internal Revenue Code Section 162, meaning costs that are common in your field and helpful for the business. Common deductible expenses include advertising, supplies, business insurance, contract labor, professional fees, rent, utilities, business travel, a portion of meals, vehicle expenses, and depreciation of business assets. If you use part of your home regularly and exclusively for business, you may claim the home office deduction. The expenses must be directly related to the business, and personal costs are not deductible; mixed-use items must be allocated. Keeping receipts, mileage logs, and records substantiates each deduction in case the IRS questions the return. Because legitimate deductions reduce both your income tax and self-employment tax, accurate tracking is valuable, but claiming personal or unsupported expenses can lead to disallowance and penalties. Reporting only genuine business expenses on Schedule C keeps your return both accurate and as tax-efficient as the law allows.

Schedule C is the starting point for self-employment tax, because the net profit it produces is generally subject to Social Security and Medicare taxes that self-employed people pay through Schedule SE. After you subtract business expenses from gross income on Schedule C, the resulting net profit transfers to Schedule SE, where the self-employment tax is calculated on net earnings above the small statutory floor. You can deduct one-half of the self-employment tax as an adjustment to income on Schedule 1, which reduces your income tax. Because no tax is withheld from sole proprietor earnings, you typically also make quarterly estimated tax payments using Form 1040-ES to cover both income tax and self-employment tax. Deducting all legitimate business expenses on Schedule C lowers net profit and therefore reduces both taxes. Because the net profit drives the self-employment tax computation, accurate income and expense reporting on Schedule C affects your total tax, and good records support both the Schedule C and the Schedule SE.

The difference between a business and a hobby matters on Schedule C because only a genuine business can deduct expenses and report a loss, while hobby income is taxable but hobby expenses are generally not deductible. The IRS considers an activity a business if you carry it on with the intent to make a profit and conduct it in a businesslike manner, looking at factors such as your effort, expertise, history of profits, and whether you depend on the income. An activity that consistently loses money and is pursued mainly for recreation may be treated as a hobby, in which case you report the income but cannot offset it with expenses on Schedule C. Because misclassifying a hobby as a business to claim losses can lead to disallowed deductions and penalties, you should be able to show a profit motive. Reporting a true business on Schedule C lets you deduct expenses, while hobby income is reported as other income without the business deductions.

Schedule C is filed together with your Form 1040 and is due by the federal filing deadline, generally April 15, or the next business day when that date falls on a weekend or holiday. If you request an automatic extension using Form 4868, you have until October 15 to file, though an extension to file does not extend the time to pay any tax owed. You can file Schedule C electronically through tax software or a tax professional, which attaches it to your return, or include the paper schedule with a mailed Form 1040. The net profit or loss flows to your Form 1040 and to Schedule SE. Because sole proprietors generally owe self-employment tax and have no withholding, you may also need to make quarterly estimated payments during the year. Keeping a copy of Schedule C and the records supporting your income and expenses is advisable in case the IRS reviews the return, since the burden of substantiating business figures falls on you.