Schedule C reports all income and expenses from your business or self-employment

Schedule C is the IRS form you file with your tax return if you are self-employed — meaning you work for yourself rather than as an employee of a company. It shows the IRS how much money your business brought in, what you spent to run it, and what you actually made as profit. The IRS uses Schedule C to calculate how much income tax and self-employment tax you owe.

You file Schedule C if you earned money from freelance work, a side business, consulting, gig work, rental property, or any other self-employment income. Even if your business lost money, you may still need to file it. Schedule C attaches to your Form 1040 (your main tax return) — you do not file it alone.

The form has two parts. Part I asks for your business income. Part II asks for your business expenses. The difference between what came in and what you spent is your net profit or loss, which transfers to your Form 1040 and determines your tax bill.

Key Takeaways

  • Schedule C is required if you had net self-employment income of $400 or more in a tax year, though you may need to file it even with lower income depending on your situation.
  • You must list all income your business received, including cash payments, barter, and payments through apps like Venmo or PayPal.
  • Business expenses reduce your taxable profit — keep receipts for things like supplies, equipment, home office, vehicle mileage, and professional services.
  • Schedule C also determines how much self-employment tax (Social Security and Medicare) you owe, which is separate from income tax.

What goes in Part I: Business Income

Part I of Schedule C asks you to report all money your business received during the tax year. This includes paychecks from clients, cash tips, payments through payment apps, barter (trading goods or services), and anything else of value your business took in. You report the gross amount — do not subtract expenses here.

Line 1a asks for gross receipts or sales. If you received a Form 1099-NEC or Form 1099-MISC from a client, the amount shown there should match what you report on Schedule C. If a client paid you through PayPal, Venmo, Square, or another payment processor and you received a Form 1099-K, include that income too. If you received cash and have no 1099 form, you still report it — the IRS expects you to track all income.

Lines 1b through 1d ask about returns, allowances, and other adjustments. If a client paid you but then you refunded part of it, or if you gave a discount, you can reduce your gross income by that amount on line 1d. Line 2 asks for cost of goods sold — the direct cost of materials you bought to make or resell a product. If you are a service provider with no product, you usually leave this blank.

What goes in Part II: Business Expenses

Part II is where you list what you spent to run your business. The IRS allows you to deduct ordinary and necessary expenses — things that are standard in your type of work and that you actually need to do the job. Common deductions include supplies, equipment, vehicle mileage, home office space, professional services like accounting, insurance, and subscriptions to software or tools.

You do not need a separate receipt for every expense under $75, but you should keep records showing what you spent and why. For larger purchases, keep the receipt. For vehicle mileage, keep a log or use an app that tracks your miles — you report the total miles driven for business, and the IRS gives you a standard mileage rate (which changes each year) to calculate your deduction.

Schedule C lists specific expense categories: advertising, car and truck expenses, commissions and fees, depreciation, insurance, interest, office expenses, rent or lease, repairs and maintenance, supplies, taxes and licenses, travel, meals and entertainment (limited to 50 percent), utilities, wages you paid to employees, and others. If your expense does not fit a listed category, use "Other expenses" at the bottom and describe it.

Do not deduct personal expenses — things you would buy whether or not you had a business. Clothing you wear only for work is not deductible, but a uniform with your business name on it is. Meals at home are not deductible, but meals while traveling for business are (at 50 percent). A home office is deductible only if you use a specific room or area exclusively for business.

Home Office Deduction on Schedule C

If you use part of your home exclusively for business, you can deduct a portion of your rent or mortgage, utilities, insurance, and repairs. You have two ways to calculate this: the regular method or the simplified method.

The regular method requires you to measure the square footage of your home office, divide it by the total square footage of your home, and explore that percentage to your home expenses. This method is more detailed but often results in a larger deduction. You will need to track mortgage interest (or rent), property taxes, utilities, insurance, repairs, and depreciation.

The simplified method lets you deduct $5 per square foot of home office space, up to 300 square feet (a maximum of $1,500 per year). You do not need receipts or detailed calculations — just measure the space and multiply. This method is faster and works well if your home office is small or your home expenses are low.

Self-Employment Tax and Schedule C

Schedule C determines not only your income tax but also your self-employment tax. Self-employment tax covers Social Security and Medicare — the taxes an employee would normally split with their employer. As self-employed, you pay both halves yourself.

If your net profit from Schedule C is $400 or more, you must file Schedule SE (Self-Employment Tax) along with your return. Schedule SE takes the profit from Schedule C and calculates how much self-employment tax you owe. This amount is separate from income tax and is often higher than people expect.

The self-employment tax rate is 15.3 percent of your net profit (12.4 percent for Social Security, 2.9 percent for Medicare), though you get to deduct half of it from your income tax. This is why many self-employed people owe more in total tax than W-2 employees earning the same amount.

Common mistakes when filing Schedule C

One frequent error is forgetting to report income that came in cash or through informal channels. The IRS matches 1099 forms to your return, but they also know that not all income comes with a 1099. If you received cash, barter, or payments through apps, report it even if you did not receive a form.

Another mistake is claiming expenses you cannot document. Keep receipts or bank statements showing what you spent. If the IRS asks, you need proof. A credit card statement showing a charge to an office supply store is proof; a memory is not.

A third error is mixing personal and business expenses. Do not deduct your cell phone bill if you use the phone for personal calls too — deduct only the business portion. Do not deduct your internet if your whole family uses it — deduct only the percentage used for business.

Some people also forget to report income from a side business because they think it is too small. If you earned $400 or more in net profit, you must file Schedule C. If you earned less, you may still want to file it to establish a record of your business and to claim losses that offset other income.

When you need a tax professional for Schedule C

If your business is straightforward — a few clients, straightforward expenses, no employees — you can often file Schedule C yourself using tax software. The software walks you through each line and calculates your net profit automatically.

You may want to consult a tax professional if your business is more complex: you have employees, you claim a home office deduction, you have significant vehicle or equipment expenses, you operate multiple businesses, or you had a loss you want to carry forward to future years. A tax professional can also help you understand what expenses you can and cannot deduct, and can review your records to make sure you are not missing deductions.

Frequently Asked Questions

Do I have to file Schedule C if my business lost money?

If your net loss is $400 or more, you should file Schedule C to report it. A business loss can offset other income on your return and reduce your overall tax bill. You may also be able to carry the loss forward to future years. Even if your loss is under $400, filing creates a record of your business activity.

What if I received a 1099 form but disagree with the amount?

Report the amount on Schedule C as you know it to be correct based on your records. If the 1099 is wrong, contact the person or company that issued it and ask them to file a corrected form. Keep your own documentation showing what you actually received. If the IRS questions the difference, your records are your proof.

Can I deduct meals and entertainment on Schedule C?

Meals and entertainment are deductible only if they are directly related to your business — for example, a meal with a client to discuss a project. You can deduct 50 percent of the cost. Keep a receipt showing the date, place, amount, and who attended. Personal meals or entertainment are not deductible.

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

Schedule C-EZ is a shorter version for very straightforward businesses with less than $5,000 in expenses and no employees. Most self-employed people now file the full Schedule C because the IRS discontinued C-EZ for recent tax years. Check the current year's instructions to see which form applies to you.

Do I need to file Schedule C if I only have rental income?

Rental income from a house or apartment goes on Schedule E, not Schedule C. Schedule C is for active business income — work you do yourself or a business you operate. If you rent out a property and do not actively manage it, use Schedule E. If you run a short-term rental business (like Airbnb) where you provide services, you may use Schedule C instead.