IRS Schedule C – Profit or Loss From Business 2025

Schedule C (Form 1040), Profit or Loss From Business (Sole Proprietorship), reports income or loss from a business operated or profession practiced as a sole proprietor. The current final IRS Schedule C is the 2025 tax-year form, posted January 6, 2026 and attached to the applicable individual income tax return.

Schedule C is not a stand-alone income tax return. For most sole proprietors, the business result becomes part of the taxpayer’s Form 1040 filing through the related schedules and tax calculations.

Who Uses Schedule C?

The IRS says Schedule C is used to report income or loss from a business you operated or a profession you practiced as a sole proprietor. The activity should be conducted with continuity and regularity and with a primary purpose of income or profit to be treated as a business under the Schedule C guidance.

Schedule C can also apply in certain statutory employee and qualified joint venture situations described by the IRS. Partnerships generally file Form 1065 instead of Schedule C, as the Schedule C form itself notes.

What Information Is Reported on Schedule C?

Business Identification

The top of the schedule asks for the proprietor’s name, Social Security number, principal business or profession, business code, business name and address when applicable, EIN when applicable, accounting method, material-participation information, start/acquisition information, and information-return questions.

Part I: Income

Part I begins with gross receipts or sales, then accounts for returns and allowances, cost of goods sold when applicable, and other business income to arrive at gross income.

Business income is not limited to the total shown on information returns. A sole proprietor must report taxable business receipts under the applicable tax rules even when no payer issued an information return.

Part II: Expenses

Part II lists common business expense categories, including advertising, car and truck expenses, commissions and fees, contract labor, depreciation, insurance, interest, legal and professional services, office expense, rent or lease, repairs and maintenance, supplies, taxes and licenses, travel, meals, utilities, wages, and other expenses.

Deductibility depends on the tax rules for the expense, substantiation, business purpose, limitations, and other requirements. A line appearing on Schedule C does not automatically make every expense in that category deductible.

Part III: Cost of Goods Sold

Businesses that sell merchandise or otherwise need to account for inventory and cost of goods sold use Part III to calculate the amount carried to Part I. The instructions explain inventory and accounting rules that can vary by business.

Part IV: Information on Your Vehicle

When vehicle expenses are claimed and the required information is not reported elsewhere, Part IV asks for business-use information such as when the vehicle was placed in service and mileage categories. Maintain contemporaneous records supporting business use.

Part V: Other Expenses

Business expenses that do not fit the preprinted Part II categories can be itemized in Part V and carried to the “Other expenses” line.

Schedule C and Form 1099-NEC

A sole proprietor may receive Form 1099-NEC for reportable nonemployee compensation. When that payment is self-employment business income, it can be part of Schedule C gross receipts. However, Schedule C income is based on the business’s taxable receipts, not merely the information returns received.

The 2025 Schedule C also asks whether the business made payments that would require information-return filing and, if so, whether required forms were or will be filed.

Schedule C and Estimated Tax

A sole proprietor usually does not have an employer withholding income tax from net business profit. Depending on expected tax and other payments, the owner may need Form 1040-ES estimated tax payments during the year. The annual tax calculation can also include self-employment tax through Schedule SE.

Business Expenses and Recordkeeping

Maintain records that support gross receipts, cost of goods sold, and deductions reported on Schedule C. Documentation may include sales records, invoices, receipts, bank records, mileage logs, asset records, and other evidence appropriate to the expense.

Good records are especially important where an expense has both business and personal components, such as vehicles, travel, communications, or use of a home. Only the allowable business portion is reported under the applicable rules.

Does a Business Loss Always Reduce Other Income?

No. Schedule C can show a net profit or loss, but tax rules can limit whether and when a loss is deductible. Material-participation rules, at-risk rules, excess business loss limits, hobby/activity rules, and other provisions may apply depending on the facts. Use the current Schedule C instructions and related IRS guidance when the return shows a loss.

How Schedule C Is Filed

Schedule C is attached to the applicable federal return; it is not mailed as an independent return. The 2025 schedule states that it can attach to Form 1040, 1040-SR, 1040-SS, 1040-NR, or 1041 in applicable cases.

If a previously filed Schedule C needs to be corrected as part of an individual amended return, the taxpayer may need a corrected Schedule C together with Form 1040-X and the supporting forms required by the amendment instructions.

Common Schedule C Mistakes

• Reporting only amounts shown on information returns and omitting other taxable business receipts.
• Mixing personal and business expenses without allocating the allowable business portion.
• Claiming an expense without keeping adequate supporting records.
• Using Schedule C for a partnership that generally belongs on Form 1065.
• Forgetting cost-of-goods-sold calculations for a business where they apply.
• Ignoring estimated tax obligations when no withholding covers the business profit.
• Using a prior-year Schedule C for a 2025 return.

Frequently Asked Questions

Is Schedule C the same as Form 1040?

No. Schedule C calculates business profit or loss. Its result is incorporated into the taxpayer’s broader Form 1040 filing.

Do I need a Form 1099-NEC before I can report Schedule C income?

No. Business income can be taxable whether or not an information return was issued. The books and records of the business should support total reportable receipts.

What year of Schedule C should I use during the 2026 filing season?

For a 2025 calendar-year business reported on the 2025 individual return, use the current 2025 Schedule C and its 2025 instructions.

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