Self-Employed

Schedule C Basics for Self-Employed Workers in 2026

By GetTaxCalculator Editorial Team· Published 2026-09-10

Schedule C is the IRS form where sole proprietors and freelancers report business income and expenses. The bottom line (net profit or loss) flows to two places: Schedule SE for calculating the 15.3% self-employment tax, and Form 1040 for calculating income tax. Understanding how these forms connect is essential for every self-employed worker.

What is Schedule C?

Schedule C (Form 1040), officially titled "Profit or Loss from Business (Sole Proprietorship)," is the form used to report the financial results of a business you operate as a sole proprietor or single-member LLC (unless the LLC has elected corporate taxation).

The form has five parts, but the core sections are Part I (Income) and Part II (Expenses). The difference between total income and total expenses is your net profit or net loss.

Who files Schedule C

You file Schedule C if you have income from:

Freelancing or independent contracting (1099-NEC or 1099-K income)
A sole proprietorship or single-member LLC
Gig economy work (rideshare, delivery, task-based platforms)
Selling goods or services as an individual (online sales, consulting, tutoring)
Any other self-employment activity that is not a hobby

If you operate multiple separate businesses, you file a separate Schedule C for each one. However, the net results from all Schedule C forms are combined when calculating SE tax on Schedule SE.

Reporting income (Part I)

Part I of Schedule C captures your gross income. This includes:

Line 1: Gross receipts or sales. Total revenue from your business before any deductions. This should include all payments received for goods or services, whether reported on a 1099 or not.
Line 2: Returns and allowances. Refunds or price adjustments you gave to customers.
Line 4: Cost of goods sold. If you sell physical products, the direct cost of those products (materials, manufacturing, shipping to you) is subtracted from gross receipts.
Line 6: Other income. Any other business income, such as recovered bad debts or scrap sales.

Line 7 is your gross income: gross receipts minus returns and cost of goods sold, plus other income.

Reporting expenses (Part II)

Part II lists common business expense categories. You deduct only expenses that are "ordinary and necessary" for your business. Key categories include:

Advertising (Line 8)
Car and truck expenses (Line 9)
Contract labor (Line 11)
Insurance (Line 15)
Office expense (Line 18)
Rent or lease (Line 20)
Supplies (Line 22)
Utilities (Line 25)
Other expenses (Line 27, with detail on Part V)

Line 28 totals all expenses. The home office deduction, if applicable, is calculated on Form 8829 and entered on Line 30.

Net profit or loss

Line 31 of Schedule C shows your net profit (or net loss): gross income minus total expenses including the home office deduction. This is the number that drives your tax calculations.

Example: Schedule C calculation

Gross income (Line 7): $90,000
Total expenses (Line 28): $25,000
Net profit (Line 31): $90,000 - $25,000 = $65,000

If Line 31 is positive, you have a net profit that is subject to both SE tax and income tax. If it is negative, you have a net loss that may offset other income on your Form 1040.

How Schedule C flows to Schedule SE

Your Schedule C net profit (Line 31) is entered on Schedule SE. From there, the SE tax calculation proceeds:

Schedule SE calculation (continuing the example)

Net SE income from Schedule C: $65,000
SE tax base: $65,000 × 92.3% = $60,028
Social Security (12%): $60,028 × 12% = $7,443.47
Medicare (2.9%): $60,028 × 2.9% = $1,740.81
Total SE tax: $9,184.28
Deductible half: $4,592.14

The SE tax base of $60,028 is below the $184,500 Social Security wage base, so the full amount is subject to both the SS and Medicare portions.

How it all reaches Form 1040

Three numbers from Schedules C and SE flow to your Form 1040:

Schedule C net profit goes to Schedule 1, Line 3 (business income), which adds to your total income on Form 1040.
Deductible half of SE tax ($4,592.14 in the example) goes to Schedule 1, Line 15, which reduces your AGI.
Total SE tax ($9,184.28 in the example) goes to Schedule 2, Line 4, which adds to your total tax on Form 1040.

Your AGI for income tax purposes would be the Schedule C net profit minus the half-SE deduction: $65,000 - $4,592.14 = approximately $60,408. After subtracting the standard deduction of $16,100, the remainder is your taxable income subject to the graduated federal income tax brackets.

Use the self-employment tax calculator to run the full calculation from Schedule C net profit through to total federal tax.

Frequently Asked Questions

What is Schedule C used for?

Schedule C (Profit or Loss from Business) reports the income and expenses of a sole proprietorship or single-member LLC. The net profit from Schedule C flows to both Schedule SE (for self-employment tax) and Form 1040 (for income tax).

Do I need Schedule C for freelance income?

Yes. If you are a freelancer, independent contractor, or sole proprietor with self-employment income, you report that income and related business expenses on Schedule C, regardless of whether you received a 1099 form.

What is the difference between Schedule C and Schedule SE?

Schedule C calculates your net self-employment profit (income minus expenses). Schedule SE uses that net profit to calculate your self-employment tax at 15.3%. Both schedules are filed with your Form 1040.

Can I file Schedule C if I also have a W-2 job?

Yes. Schedule C is for your self-employment income only. Your W-2 wages are reported separately. Having both is common for people with side businesses or freelance work alongside traditional employment.

What happens if Schedule C shows a loss?

A net loss on Schedule C generally reduces your other income (like W-2 wages) on Form 1040, lowering your income tax. However, you do not owe SE tax on a loss, and you cannot receive a negative SE tax credit. The IRS may scrutinize repeated losses under the hobby loss rules.