What this line means
Your net profit or loss from Schedule C (Profit or Loss From Business). If you are a sole proprietor, freelancer, independent contractor, or gig worker, the bottom-line number from Schedule C flows here. A positive number is profit that gets taxed. A negative number is a business loss that reduces your other income.
Does this apply to you?
- You are self-employed, a freelancer, or an independent contractor who received 1099-NEC or 1099-K forms
- You run a sole proprietorship and filed Schedule C
- You drive for a rideshare company, deliver food, or do other gig work as an independent contractor
- You have a side business in addition to a regular W-2 job
Easy to overlook
Every 1099-NEC and 1099-K is reported to the IRS If you received payment as an independent contractor, the payer sent a copy of your 1099-NEC to the IRS. Failing to include all 1099 income on Schedule C triggers a CP2000 notice. Filers with multiple gig platforms (rideshare, delivery, freelance marketplaces) often miss one or more 1099s. The IRS matches every one of them. 1 CP2000 pattern — unreported 1099-NEC income from gig work
Net profit triggers self-employment tax in addition to income tax The amount on this line is not just subject to income tax. It also flows to Schedule SE, where you owe self-employment tax of 15.3% on the first $176,100 of net earnings (2025), then 2.9% above that. 2 First-time self-employed filers are often surprised by this second layer of tax. The deductible half of SE tax is claimed on Schedule 1 line 15. IRS Schedule C Instructions — Net Profit or Loss
Watch out for this
Reporting gross income from 1099 forms on this line instead of net profit from Schedule C. Line 3 is for the bottom-line result after deducting all business expenses. If you enter gross receipts here, you double-count income because Schedule C already reports those receipts before calculating net profit.
Footnotes
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IRS CP2000 Notice, Automated Underreporter Program, 1099 Income Matching. https://www.irs.gov/individuals/understanding-your-cp2000-notice ↩
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IRS Schedule SE (Form 1040) Instructions. https://www.irs.gov/instructions/i1040sse ↩