Schedule C is the tax form where self-employed people report their business income and expenses

Schedule C is the IRS form you file with your tax return if you are self-employed or run a sole proprietorship. It shows the IRS how much money your business took in, what you spent to run it, and what profit or loss remains. The IRS uses Schedule C to calculate how much income tax and self-employment tax you owe.

You file Schedule C if you are a freelancer, contractor, consultant, small business owner, or anyone else who reports business income on their own rather than receiving a W-2 from an employer. If you have a business partner, you would file a different form (Schedule C-EZ or Form 1065, depending on your structure). If you are a sole proprietor — meaning you own the business by yourself — Schedule C is the standard form.

The form itself has two pages. The first page asks for basic information about your business, your business structure, and your accounting method. The second page is where you list your income sources and then subtract your business expenses line by line. The bottom of the form shows your net profit or loss, which carries over to your main tax return (Form 1040).

Key Takeaways

  • Schedule C reports self-employment income and business expenses to the IRS and determines how much self-employment tax you owe.
  • You need receipts, invoices, and records of business expenses for the entire year before you fill out Schedule C.
  • Business expenses you can deduct include supplies, equipment, home office costs, vehicle mileage, and professional services — but only if they are ordinary and necessary for your business.
  • The net profit or loss from Schedule C flows to your Form 1040, and that number affects both your income tax and your self-employment tax liability.

What information goes on Schedule C

The top of Schedule C asks for your name, Social Security number, and basic details about your business: the business name, the principal business code (a number that describes what your business does), and your accounting method (cash or accrual). Most self-employed people use the cash method, which means you report income when you receive it and expenses when you pay them.

Part I of Schedule C is where you report your gross income. You list the total amount of money your business brought in during the year. If you had multiple income sources — say you freelanced for three different clients — you add them all together. You also report any returns or refunds you gave customers, which reduces your gross income.

Part II is the expense section. This is where you list what you spent to run your business. The form has specific lines for common expenses: cost of goods sold, wages you paid employees, rent or lease payments, utilities, office supplies, professional services, vehicle and travel expenses, meals and entertainment, and depreciation of equipment. If your expenses do not fit neatly into those categories, there is a line for "other expenses" where you can add them.

At the bottom of Part II, you subtract all your expenses from your gross income. The result is your net profit or loss. If your income was higher than your expenses, you have a profit. If your expenses were higher, you have a loss. This number is what the IRS uses to calculate your tax bill.

Which business expenses you can deduct

The IRS allows you to deduct expenses that are both ordinary and necessary for your business. "Ordinary" means the expense is common in your type of business. "Necessary" means it is helpful and appropriate for running your business. You do not have to choose between ordinary or necessary — the expense has to be both.

Common deductible expenses include office supplies, software subscriptions, professional fees (accountant, lawyer, consultant), equipment under a certain cost threshold, rent for a dedicated business space, utilities if you use part of your home for business, vehicle mileage driven for business purposes, and continuing education or training related to your field. You can also deduct a portion of your home office if you have a dedicated space where you work.

Expenses you cannot deduct include personal expenses (groceries, personal clothing, gym memberships), fines or penalties, political contributions, and expenses that are lavish or extravagant. Meals and entertainment have special rules: you can deduct 50 percent of the cost of meals if they are directly related to your business, but entertainment expenses are generally not deductible anymore under current tax law.

Vehicle expenses work in two ways. You can either deduct the actual expenses (gas, maintenance, insurance, registration) and keep detailed mileage records, or you can use the standard mileage rate, which the IRS sets each year. The standard rate is simpler because you only need to track the total miles you drove for business. You cannot use both methods in the same year.

How to calculate your home office deduction

If you use part of your home exclusively for business, you can deduct a portion of your rent or mortgage, utilities, insurance, and repairs. The IRS offers two methods: the simplified method and the regular method.

The simplified method lets you deduct $5 per square foot of home office space, up to a maximum of 300 square feet (so the maximum deduction is $1,500 per year). You measure the space you use exclusively for business and multiply by $5. This method is faster and requires less record-keeping, but it usually results in a smaller deduction.

The regular method requires you to calculate the percentage of your home that is used for business. If your home is 2,000 square feet and your office is 200 square feet, your business use is 10 percent. You then deduct 10 percent of your mortgage interest (or rent), property taxes, utilities, insurance, repairs, and depreciation. This method takes more work but often results in a larger deduction. You will need to keep receipts and records for all home expenses.

Self-employment tax and Schedule C

The net profit from Schedule C is also used to calculate your self-employment tax. Self-employment tax covers Social Security and Medicare taxes for self-employed people. Employees have these taxes withheld from their paychecks, but self-employed people pay both the employee and employer portions themselves.

You calculate self-employment tax on Schedule SE, which is a separate form. The net profit from Schedule C flows to Schedule SE, where it is multiplied by the self-employment tax rate (currently 15.3 percent on 92.35 percent of your net profit). The result is your self-employment tax liability. This amount is added to your regular income tax when you file your return.

If your net profit is very low, you may not owe self-employment tax. The threshold changes each year, but generally you need at least $400 in net profit from self-employment to owe self-employment tax. However, you may still want to file Schedule C and Schedule SE even if your profit is below $400, because it establishes your work history for Social Security purposes.

What records you need before filing Schedule C

Before you sit down to fill out Schedule C, gather all your business records from the tax year. You will need invoices or receipts showing all the income your business received. If you invoiced clients, keep copies of those invoices. If you received payments through a payment processor like PayPal or Square, download your transaction history. If clients paid you in cash, keep a log of those payments.

For expenses, keep receipts, invoices, and bank statements that show what you spent. Organize them by category: supplies, equipment, travel, meals, professional services, and so on. If you drove your vehicle for business, keep a mileage log showing the date, destination, business purpose, and miles driven. If you are deducting a home office, measure the space and gather receipts for home expenses like utilities and repairs.

You do not file these records with your tax return, but the IRS can ask to see them if they audit your return. Keep them for at least three years, and longer if you think there is any chance of an audit. Digital copies are fine — you do not need to keep paper originals, though many people do for their own records.

When and how to file Schedule C

Schedule C is filed as part of your Form 1040 tax return. The deadline is normally April 15 of the year following the tax year you are reporting. If April 15 falls on a weekend or holiday, the deadline moves to the next business day. You can file an extension to move the deadline to October 15, but an extension to file is not an extension to pay — if you owe taxes, you should pay by April 15 even if you file an extension.

You can file Schedule C yourself using tax software, by hand and mailing it to the IRS, or by hiring a tax professional. Many self-employed people work with a tax preparer or accountant because the rules around business deductions can be complex, and a mistake can cost you money. If you use tax software, it will walk you through the questions and calculate your net profit automatically. If you file by hand, you can download the form from the IRS website (irs.gov) and follow the instructions on the back.

Frequently Asked Questions

Do I have to file Schedule C if my business had a loss?

Yes. Even if your business expenses exceeded your income and you had a loss, you should file Schedule C. A business loss can reduce your overall tax bill by offsetting other income. However, if you show losses for several years in a row, the IRS may question whether your business is a legitimate profit-seeking venture or a hobby, which has different tax rules.

What is the difference between Schedule C and Schedule C-EZ?

Schedule C-EZ is a shorter version of Schedule C for very simple businesses with gross income under $5,000 and no employees. Most self-employed people use the full Schedule C because it allows more detailed expense reporting. Schedule C-EZ has been discontinued for tax years after 2019, so you will use Schedule C regardless.

Can I deduct business losses against my regular job income?

Yes, if you have a loss from self-employment, it reduces your total taxable income for the year. However, there are limits. If your business loss is very large or you show losses consistently, the IRS may classify your business as a hobby rather than a profit-seeking venture, which changes the deduction rules. Keep good records to show your business is legitimate.

Do I need to file Schedule C if I made less than $400?

You are not required to file Schedule C if your net profit is under $400, because you would not owe self-employment tax. However, filing anyway can be beneficial because it establishes your work history for Social Security and Medicare purposes. If you think you might owe income tax on other income, filing Schedule C may also reduce that tax.

What happens if I do not have receipts for an expense?

The IRS prefers receipts, but if you do not have one, you can use other documentation: bank statements, credit card statements, invoices, or a written log. The key is showing that the expense was real and business-related. For small cash expenses under $75, you generally do not need a receipt if you have other evidence the expense occurred. Keep whatever documentation you have.