# Schedule C explained

Schedule C is the IRS form where a sole proprietor reports business income and expenses. Here is what each part means, with a worked example.

Published October 27, 2026.

Schedule C (Form 1040), Profit or Loss From Business, is the form where a sole proprietor reports the year's business income and expenses. A single-member LLC taxed the default way usually uses it too ([IRS](https://www.irs.gov/instructions/i1040sc)).

You subtract your expenses from your income. The result is your net profit, on line 31. That one number sets both your income tax and your self-employment tax.

## The short version

- Schedule C is for **one business**. If you have two businesses, you file one for each.
- **Part I** is income. **Part II** is expenses.
- **Line 31** is net profit. It goes to Schedule 1, line 3, and to Schedule SE, line 2.
- Your **books**, not your 1099 forms, are the source of your income figure.
- Most mistakes happen in your books, before you open the form.

## Words to know

- **Sole proprietor:** a person who owns a business alone and has not formed a corporation.
- **Gross receipts:** all the money your business was paid in the year.
- **Net profit:** income minus expenses.
- **Schedule SE:** the form where you figure self-employment tax.
- **Accounting method:** [cash or accrual](https://rightobooks.com/blog/cash-vs-accrual-accounting/). On the cash basis, you report income when you receive it and expenses when you pay them.

## The questions at the top

Before the numbers, the form asks about your business:

- **Line A:** what your business does, such as "graphic design services".
- **Line B:** a six-digit business code from the instructions.
- **Line D:** your employer identification number (EIN), if you have one. If you do not have one, leave it blank. Do not enter your Social Security number there ([IRS](https://www.irs.gov/instructions/i1040sc)). See [do I need an EIN](https://rightobooks.com/blog/do-i-need-an-ein/).
- **Line F:** your accounting method.
- **Line G:** if you "materially participated". One test is more than 500 hours of work in the year.
- **Lines I and J:** if you made payments that need a Form 1099, and if you filed them. For payments made in 2026, Form 1099-NEC is generally needed for a contractor you paid $2,000 or more ([IRS](https://www.irs.gov/businesses/small-businesses-self-employed/am-i-required-to-file-a-form-1099-or-other-information-return)).

## Part I: income

Line 1 is gross receipts. The instructions say to make sure it includes the amounts on any Forms 1099-NEC you received ([IRS](https://www.irs.gov/instructions/i1040sc)). Also include income with no form, such as card payments from clients. Line 2 is refunds you gave. Line 7 is your gross income.

## Part II: expenses

Part II has a line for each common type of expense. Some examples:

- Line 8: advertising
- Line 10: commissions and fees
- Line 11: contract labor
- Line 15: insurance
- Line 22: supplies
- Line 24a: [business travel](https://rightobooks.com/blog/business-travel-deductions/), such as flights and hotels
- Line 24b: [business meals](https://rightobooks.com/blog/business-meals-deduction/). The deduction is 50% of the cost ([IRS](https://www.irs.gov/instructions/i1040sc)).
- Line 27b: other expenses, which you list in Part V

Line 28 is the total. To learn which costs count, see [what counts as a business expense](https://rightobooks.com/blog/what-counts-as-a-business-expense/).

## Lines 29 to 31

Line 29 is a tentative profit. Line 30 is the [home office deduction](https://rightobooks.com/blog/home-office-deduction/). With the simplified method, it is $5 for each square foot of the office, up to 300 square feet ([IRS](https://www.irs.gov/instructions/i1040sc)). Line 31 is your net profit or loss.

## An example

Maya is a freelance designer. (She is an example, not a real person.) Her books for 2026 show $84,000 of business income. Her clients sent 1099-NECs for only $52,000, because some clients paid by card. She uses $84,000, the figure from her books.

| Line | What it is | Amount |
|---|---|---|
| 7 | Gross income | $84,000.00 |
| 8 | Advertising | $1,200.00 |
| 10 | Commissions and fees | $1,450.00 |
| 11 | Contract labor | $4,000.00 |
| 15 | Insurance | $600.00 |
| 22 | Supplies | $310.00 |
| 24b | Meals ($600 spent, 50%) | $300.00 |
| 27b | Other expenses (software) | $1,890.00 |
| 28 | Total expenses | $9,750.00 |
| 29 | Tentative profit | $74,250.00 |
| 30 | Home office (150 sq ft × $5) | $750.00 |
| 31 | Net profit | $73,500.00 |

Her $73,500 goes on Schedule 1, line 3, and on Schedule SE, line 2 ([IRS](https://www.irs.gov/instructions/i1040sc)). Her self-employment tax is about $73,500 × 92.35% × 15.3% = $10,385. See [self-employment tax explained](https://rightobooks.com/blog/self-employment-tax-explained/).

## Where Schedule C goes wrong

Most mistakes happen in the books:

- A transfer from savings is counted as income.
- Personal spending is counted as a business expense.
- An estimated tax payment is recorded as an expense. It is not.

Each mistake changes line 31, and line 31 sets two taxes.

## A tip for Righto users

Righto does not prepare Schedule C or calculate tax. It keeps your books on the cash basis, and its Profit and Loss report gives your totals by category. Use our [Schedule C categories tool](https://rightobooks.com/tools/schedule-c-categories/) to see where common expenses usually go.

## Common questions

**I did not get a 1099 from a client. Do I still report the income?**
Yes. Line 1 is all of your gross receipts, with or without a form.

**My single-member LLC has its own name. Does it use Schedule C?**
Usually yes, unless the LLC chose to be taxed as a corporation.

**Can I file Schedule C with a loss?**
Yes. Some rules can limit how much of the loss you can use, so ask a tax professional.

## What to do now

1. Reconcile every business account to its December statement.
2. Check that transfers and [owner draws](https://rightobooks.com/blog/how-to-record-owner-draws-and-contributions/) are not in income or expenses.
3. Run your Profit and Loss report for the year.
4. Add your [mileage log](https://rightobooks.com/blog/mileage-log-requirements/) and home office size. The [mileage](https://rightobooks.com/tools/mileage-deduction/) and [home office](https://rightobooks.com/tools/home-office-deduction/) calculators work out both amounts.
5. Give it all to your tax preparer, or copy the totals onto the form.

[Righto](https://rightobooks.com/download/) is free, easy to use and needs no account.

## Sources

- [Instructions for Schedule C (Form 1040)](https://www.irs.gov/instructions/i1040sc), IRS
- [Am I required to file a Form 1099 or other information return?](https://www.irs.gov/businesses/small-businesses-self-employed/am-i-required-to-file-a-form-1099-or-other-information-return), IRS