What Is a Schedule C? Profit or Loss From Business

A Schedule C is the tax form sole proprietors attach to Form 1040 to report what their business earned and spent. Its full name is Schedule C (Form 1040), Profit or Loss From Business (Sole Proprietorship). You subtract business expenses from business income on it, and the net profit carries to Schedule 1 of your Form 1040 as taxable income. If that net profit is $400 or more, you also owe self-employment tax on Schedule SE.

What is a Schedule C tax form used for?

Schedule C turns a year of business activity into one number. Everything your business took in goes at the top, every deductible cost comes off in the middle, and what is left at the bottom is the profit the IRS taxes. If you have ever seen a profit and loss statement, the layout will feel familiar, because that is essentially what the form is.

That bottom-line number does two jobs. It flows to Schedule 1 (Form 1040), Part I, line 3, where it joins your other income and gets taxed at ordinary income rates. It also flows to Schedule SE, where it gets hit with self-employment tax covering Social Security and Medicare. This is the part that surprises first-time filers: business profit is taxed twice over, once as income and once for FICA, which is why a $30,000 profit does not feel like $30,000.

The form has five parts, and they run in the order you would naturally think about a business.

You file one Schedule C per business. Someone who drives for Uber and also sells handmade goods on Etsy files two, because those are separate trades with separate expenses and separate business codes.

Who has to file a Schedule C?

You file a Schedule C if you operated a business or practiced a profession as a sole proprietor during the year. That covers far more people than the word "business" suggests. No registration, license, storefront, or business name is required. If you took money for work you did on your own account, the IRS considers you a sole proprietor by default.

• Independent contractors and freelancers paid on a 1099-NEC, and often paid with no form at all
• Gig workers driving for Uber or Lyft, delivering for DoorDash or Instacart, or renting out equipment
• Online sellers on Etsy, eBay, Amazon, or Shopify who sell for profit rather than clearing out a closet
• Single-member LLCs that have not elected corporate tax treatment, which is the default
• Side-hustlers with a day job, consulting, tutoring, or selling on evenings and weekends
• Licensed professionals operating solo, such as a therapist or a contractor without a partnership

Partnerships file Form 1065 instead, S corporations file Form 1120-S, and C corporations file Form 1120. A married couple who jointly run an unincorporated business can elect qualified joint venture treatment and file two Schedule Cs splitting the income, which keeps both spouses earning Social Security credits.

One clarification worth making: Schedule C-EZ no longer exists. The IRS retired the short version after the 2018 tax year. Every sole proprietor now uses the full Schedule C regardless of how simple the business is.

What is the difference between a Schedule C and a 1099?

A 1099 is a report someone sends about you. A Schedule C is the form you file. A client who paid you $3,000 sends a 1099-NEC to you and to the IRS saying so; you then put that $3,000 into Part I of your Schedule C along with everything else you earned, deduct your costs, and report the profit.

The practical consequence is that your Schedule C income should usually be larger than the total of your 1099s, not equal to it. Clients who paid you under $600 are not required to send a form, cash and check payments often generate nothing, and payment apps only issue a 1099-K above $20,000 and 200 transactions. All of that income is still taxable and still belongs on Schedule C. Reporting only what appeared on forms is one of the most common ways people underreport without meaning to.

What expenses can I deduct on Schedule C?

The standard is that an expense must be both ordinary, meaning common in your line of work, and necessary, meaning helpful and appropriate for your business. It does not have to be indispensable. Personal costs never qualify, and mixed-use items get split by the business percentage.

These are the deductions that move the number most, with the 2025 figures:

Mileage is where most solo businesses leave money behind. At 70 cents a mile, 6,000 business miles is a $4,200 deduction, which at a 22 percent bracket plus self-employment tax is worth well over $1,500 in real tax. It requires a contemporaneous log of dates, miles, and business purpose, and commuting from home to a regular workplace does not count.

The home office deduction is available to renters and owners alike, but the space must be used regularly and exclusively for business. A desk in the corner of a bedroom that nobody else uses qualifies; the kitchen table does not. The simplified $5 per square foot method skips the receipts entirely, while the regular method prorates actual rent, mortgage interest, utilities, and insurance by square footage and often produces a bigger deduction for people with real overhead.

Keeping the underlying records in order is what makes any of this defensible. If your bookkeeping lives in a spreadsheet or a bank export, it helps to turn it into a proper profit and loss statement before you start filling in Part II, because the categories line up almost one to one with the Schedule C expense lines. Our guide to tracking business expenses for taxes covers the habits that make this painless, and the 1099 deductions list runs through the categories in detail.

Can I file a Schedule C with no income or a loss?

Yes, and sometimes you should. A business that spent money getting started but earned nothing still files a Schedule C to report the loss, and that loss offsets your other income, including W-2 wages. Someone who earned $70,000 at a job and lost $6,000 launching a side business is taxed on $64,000.

The limit on this is the hobby loss rule. The IRS expects a real business to be run with the intent of making a profit, and it looks at whether you keep books, market yourself, adjust your approach, and have relevant expertise. A safe harbor treats an activity as a business if it turned a profit in three of the last five years. An activity judged to be a hobby cannot deduct expenses at all, and the income is still taxable.

If you had genuinely no activity at all, no income and no expenses, there is nothing to report and no Schedule C is required for that year.

How much tax do you pay on Schedule C income?

Two taxes stack on the same profit. Self-employment tax is 15.3 percent, made up of 12.4 percent Social Security up to the annual wage base and 2.9 percent Medicare with no cap. It applies to 92.35 percent of your net profit, and it kicks in at $400 of net earnings. Income tax then applies at your ordinary bracket.

Two things soften it. You deduct half of your self-employment tax on Schedule 1, and most sole proprietors also qualify for the qualified business income deduction, which removes up to 20 percent of net business profit from taxable income before the brackets apply. Neither reduces the self-employment tax itself.

Because nothing is withheld from business income, the IRS expects quarterly estimated tax payments once you expect to owe $1,000 or more for the year. Missing them produces an underpayment penalty even if you pay the full balance in April. A rough working rule is to set aside 25 to 30 percent of every payment you receive, and our breakdown of tax on 1099 income works through the arithmetic with real numbers.

What happens if you don't file a Schedule C?

Leaving business income off your return is an accuracy problem, not a paperwork one. The IRS receives copies of every 1099-NEC, 1099-MISC, and 1099-K issued to you, and an automated matching system compares them against what you filed. A mismatch generates a CP2000 notice proposing tax on the full gross amount, because the IRS has no way of knowing your expenses.

That is the expensive part. Tax is assessed on gross receipts rather than profit, then a failure-to-pay penalty and interest are added, and a substantial understatement can bring a 20 percent accuracy penalty on top. Responding with your records usually reduces the bill, but you are proving your deductions after the fact rather than claiming them up front. Filing the Schedule C in the first place is far cheaper.

Filing your Schedule C

TaxFile handles the whole sole proprietor return in one pass. Upload your 1099s and business records and it reads them, sorts income and expenses into the right Schedule C lines, applies the mileage rate, home office method, and QBI deduction where they fit, calculates Schedule SE, and runs an error check before anything is transmitted. You review and approve every line, then it e-files through an authorized IRS e-file provider.

Pricing is $89 for the self-employed tier and $199 for business, plus $19 per state return. There is no free tier. See Schedule C software for how the business side works, or self-employed tax filing for the full picture including Schedule SE and quarterly payments. TaxFile does not handle capital gains on Schedule D, rental income on Schedule E, or cryptocurrency. It is self-prepared tax software and does not provide personalized tax advice; for complex situations, consult a CPA or tax professional.

Is a Schedule C the same as being self-employed?

Close but not identical. Schedule C is the form self-employed sole proprietors use, so in everyday conversation the two are used interchangeably. But self-employment also covers partners in a partnership, who report through Schedule K-1 rather than Schedule C, and farmers, who use Schedule F. If you work for yourself and are not a partner or a farmer, Schedule C is almost certainly your form.

Do I need an LLC or a business license to file a Schedule C?

No. Schedule C is the default treatment for anyone doing business on their own account, with no registration required. A single-member LLC that has not elected corporate treatment files exactly the same Schedule C as an unregistered freelancer, because the IRS disregards it as a separate entity. Forming an LLC changes your legal liability, not your federal tax form.

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

Yes, and it is very common. You file one Form 1040 that includes both your W-2 wages and your Schedule C business profit. The self-employment tax applies only to the business profit, and your W-2 Social Security withholding counts toward the annual wage base first, so high earners may owe only the Medicare portion on the business side.

How much can you make on a Schedule C without paying taxes?

Self-employment tax starts at just $400 of net profit, which is far lower than the income tax filing threshold. You can owe self-employment tax on a $500 side business even though you owe no income tax at all. Income tax depends on your total income against the standard deduction, so the two thresholds are separate and the $400 one comes first.