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What is Schedule C?

Nicolas StrautBy Nicolas StrautPublished 8 min read

Key takeaways

  • For 2026, clients send Form 1099-NEC only when they paid you $2,000 or more, up from $600. Line 1 of Schedule C still has to include all of your business income, whether or not a 1099 arrives.1
  • You file Schedule C if you ran a business as a sole proprietor, freelancer, contractor, or gig worker, or own a single-member LLC with no corporate election. The net profit on line 31 of Schedule C is the figure the rest of your return taxes.
  • Schedule C profit is taxed two ways: ordinary income tax through Schedule 1, and self-employment tax of 15.3% on 92.35% of the profit once net earnings reach $400. Run your profit through the Solvent self-employment tax calculator before you file.
In this article

Schedule C is the IRS form a sole proprietor, freelancer, or single-member LLC owner files with Form 1040 to report business income and expenses. Its net profit on line 31 carries to Schedule 1 for income tax and Schedule SE for self-employment tax. You file one for every business, whether it made money or lost it. This guide covers the form's five parts, who files it, how it differs from a 1099, and what changed for 2026.

What is the Schedule C form?

The Schedule C form, officially Profit or Loss From Business (Sole Proprietorship), is the part of your Form 1040 where you report what your business earned and spent. It takes your gross receipts, subtracts your business expenses, and produces one net profit or loss figure that the rest of your return uses.

Only a business goes on Schedule C. The IRS counts an activity as a business when your primary purpose is income or profit and you are involved in it "with continuity and regularity."2 A hobby or a one-off sale does not qualify.

Schedule C is a schedule attached to your Form 1040, not a separate return, and you file it as the owner, not in the business's name. The shorter Schedule C-EZ is gone: for tax year 2019 and later, the IRS says to use Schedule C instead.

What's on the Schedule C form?

The Schedule C form has five parts, plus a header that asks about your business.3

Scroll horizontally to see more columns.
PartWhat it holdsWhere the total goes
Header, lines A to JBusiness name, code, EIN, accounting method, material participation, whether you owed 1099s to anyone you paidNot a dollar figure
Part I: Income (lines 1 to 7)Gross receipts, returns, cost of goods sold, other incomeLine 7, gross income
Part II: Expenses (lines 8 to 32)Business expense lines from advertising to utilities, home office deduction on line 30, net profit or loss on line 31Line 31, to Schedule 1 line 3 and Schedule SE line 2
Part III: Cost of goods sold (lines 33 to 42)Inventory, purchases, labor, materialsLine 4
Part IV: Vehicle information (lines 43 to 47b)Date placed in service, business and commuting miles, whether evidence is writtenSupports line 9
Part V: Other expenses (line 48)Anything that fits no Part II lineLine 27b

Part III applies only if you sell products, and Part IV only if you claim car expenses and are not filing Form 4562. The Schedule C instructions guide covers each line in detail.

Who needs to file Schedule C?

You need to file Schedule C if you ran a business as a sole proprietor, including freelancing, contract work, and gig work, or if you own a single-member LLC that has not elected corporate tax treatment.

Who files Schedule C and who files a different form

Sole proprietors, single-member LLC owners, and statutory employees file Schedule C, while partners, S corporation shareholders, landlords, and farmers file a different form.

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You areFile Schedule C?Notes
Freelancer, independent contractor, or gig worker with no entityYesReport income whether or not a 1099 arrived
Owner of a single-member LLC with no corporate electionYesThe LLC is disregarded for income tax. See LLC vs sole proprietorship
Statutory employee (box 13 checked on your W-2)YesWages go on line 1 with the box checked
Partner in a partnership or multi-member LLCNoThe business files Form 1065
S corporation shareholderNoThe business files Form 1120-S
Landlord with rental income onlyNoRental income goes on Schedule E
FarmerNoFarm income goes on Schedule F

Is there a minimum income to file Schedule C?

There is no minimum income to file Schedule C: if your business had income or deductible expenses, you report them on the form. The $400 figure you may have seen is the self-employment tax filing threshold. Net earnings from self-employment of $400 or more mean you owe self-employment tax and have to file a return, even if your income is otherwise below the filing threshold.

A business with expenses and no income still files, because the loss on line 31 carries to Schedule 1 and can reduce your other taxable income, subject to the at-risk and business loss limits. A business with no income and no expenses all year has nothing to report.

3 differences between Schedule C and a 1099

Schedule C is not the same as a 1099, and the 3 differences between Schedule C and a 1099 are who files it, what it reports, and whether a dollar threshold applies. A 1099 is an information return a client or platform sends you, while Schedule C is the return you file that reports all of your business income.

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DifferenceSchedule CForm 1099-NEC or 1099-K
Who files itYou, with your Form 1040A client (1099-NEC) or a payment platform (1099-K), which sends you a copy
What it reportsAll of your business income and expenses, and the net profit or lossOne payer's payments to you: nonemployee compensation (1099-NEC) or gross payments processed (1099-K)
Whether a threshold appliesNo. You report "all income attributable to your trade or business from all sources"Yes. Form 1099-NEC for $2,000 or more in 2026; Form 1099-K above $20,000 and 200 transactions

With the 1099-NEC threshold at $2,000, a freelancer with small clients receives fewer forms. Adding up your 1099s no longer gives you the total for line 1. Total your invoices or deposits instead, and use the 1099s you do receive as a check.

What changed on Schedule C for 2026?

Two figures changed for Schedule C filers in 2026, and one line change is waiting on the final form.

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Item20252026Source
Form 1099-NEC reporting threshold$600$2,000, may be inflation-adjusted from 2027Instructions for Forms 1099-MISC and 1099-NEC (12/2026)
Business standard mileage rate70 cents a mile72.5 cents (Jan to Jun), 76 cents (Jul to Dec)4IRS IR-2025-128 (Notice 2026-10); Announcement 2026-11. See the IRS mileage rate guide
Line 16 interest16a mortgage, 16b otherDraft: 16a mortgage, 16b vehicle loan, 16c other2026 draft Schedule C (May 15, 2026)

The line 16 change is not final. The IRS's 2026 draft, created May 15, 2026 and marked not for filing, adds a separate line for vehicle loan interest. Check the final form when the IRS posts it.

How to file Schedule C in 4 steps

You can file Schedule C yourself in 4 steps, and most sole proprietors with simple books do. A preparer is worth the fee when you have inventory, equipment you depreciate, or a home office claimed on Form 8829. This section is an overview. The Schedule C instructions guide walks through the form line by line.

Step 1: Get the form

Get the form and its instructions free from IRS.gov, or let tax software build it from your answers. The 2026 form is still a draft as of October 2026. File your 2026 return on the final form once the IRS posts it.

Step 2: Gather your records

Gather your records before you start: income records, expense receipts, a mileage log, and inventory counts if you sell products. Income records include invoices, bank deposits, and any 1099-NEC or 1099-K you received. Keep receipts for each expense line, a written mileage log for Part IV, your EIN if the business has one, and beginning and ending inventory counts for Part III.

Step 3: Fill in the parts that apply to you

Fill in the header and the parts that apply to you: Part I and Part II for everyone, Part III only with inventory, Part IV only for car expenses, and Part V for expenses with no Part II line.

Step 4: Carry your profit to Schedule 1 and Schedule SE

Carry your profit or loss on line 31 to Schedule 1, line 3, and Schedule SE, line 2, then file all three with your Form 1040.

How to file Schedule C if you have more than one income stream

If you have more than one income stream, how you file Schedule C depends on how many businesses you run and who owns them.

If you run more than one business

If you run more than one business, you file a separate Schedule C for each one. The instructions say: "If you owned more than one business, complete a separate Schedule C for each business." A designer who also drives for a delivery app files two Schedule Cs. The DoorDash taxes guide covers the delivery side.

Two clients in the same line of work are one business and one Schedule C. Your self-employment tax still combines on one Schedule SE.

If you and your spouse run a business together

If you and your spouse run a business together as the only owners, both materially participate, and file jointly, you can elect qualified joint venture treatment and each file a Schedule C for your share. Without the election, the business is generally a partnership that files Form 1065. The election matters because each spouse then earns their own Social Security credit.

How Schedule C profit is taxed

Schedule C profit is taxed through two separate forms: Schedule 1 for income tax and Schedule SE for self-employment tax. On Schedule 1, your line 31 profit joins your other income and is taxed at your regular income tax rates.

On Schedule SE, self-employment tax applies to 92.35% of net profit at 15.3% once net earnings reach $400, and half of the self-employment tax comes back as a deduction.5 On $50,000 of net profit, that is $50,000 × 92.35% × 15.3%, or about $7,065 of self-employment tax. The self-employment tax guide covers the wage base and the rest of the mechanics.

Diagram of where Schedule C net profit goes on Form 1040: to Schedule 1 for income tax, and to Schedule SE and Schedule 2 for self-employment tax, with half of the self-employment tax deducted on Schedule 1.
One net profit figure from line 31 feeds both your income tax and your self-employment tax.

Contributions to your own retirement plan come off on Schedule 1, not Schedule C, so they cut your income tax but not your self-employment tax. The Solo 401(k) vs SEP IRA guide covers how much you can put in.

Solvent self-employment tax calculator

Calculate your self-employment tax

Open the Solvent Self-Employment Tax Calculator

How to estimate quarterly taxes from your Schedule C profit

To estimate quarterly taxes from your Schedule C profit, project the year's line 31 from what you've earned so far and pay a share each quarter, so you'll owe less at filing. The Solvent quarterly tax estimator turns a year-to-date profit figure into a quarterly payment. The guide to estimated tax payments explains who has to make them.

Frequently asked questions about Schedule C

What all can you write off on a schedule C?

You can write off ordinary and necessary business expenses on Schedule C, which Part II groups into lines such as advertising, car and truck expenses, contract labor, insurance, office expenses, rent, supplies, travel, and utilities. Business meals are generally 50% deductible. Anything without its own line goes in Part V as an other expense. Our 1099 deductions list goes through the categories in more detail.

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

Yes, you can file Schedule C if you also have a W-2 job. Your wages go on Form 1040 as usual, and your side business profit or loss goes on Schedule C, then joins your wages on the same return. Withholding from your paycheck can also cover some of the tax on your Schedule C profit.

When is Schedule C due?

Schedule C is due with your Form 1040, because it is filed as part of that return. Schedule C for tax year 2026 is due April 15, 2027. An extension on Form 4868 gives you more time to file Schedule C, but not more time to pay.

What triggers the IRS audit on Schedule C?

The IRS does not publish what triggers a Schedule C audit, so any list of triggers is a guess. The form itself shows what the IRS asks about: whether you materially participated, whether you filed required 1099s, whether your vehicle evidence is written, and whether a loss is at risk.

Is a schedule C the same as an LLC?

A Schedule C is not the same as an LLC: an LLC is a legal entity formed under state law, and Schedule C is a federal tax form. Forming an LLC changes your liability protection, not your tax form, unless the LLC has more than one owner or elects to be taxed as a corporation.

About the author

Nicolas Straut

Nicolas Straut

Personal and business finance writer, former Forbes contributor

Nicolas Straut writes about self-employment and quarterly tax, LLC formation and costs, and tax software for Solvent. He has written about money for about ten years, including for the fintech companies NorthOne and Fundera. He files his own taxes as a freelancer. He isn't a CPA or an enrolled agent (EA).

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This page describes the federal Schedule C for sole proprietors and single-member LLCs. Figures are for tax year 2026 where the IRS has published them; the 2026 form itself was a draft when this page was written. State returns follow their own rules. Solvent provides educational estimates, not tax advice. Confirm your specific situation with a qualified tax professional.

Sources

  1. https://www.irs.gov/instructions/i1099mec · https://www.irs.gov/businesses/understanding-your-form-1099-k
  2. https://www.irs.gov/instructions/i1040sc · https://www.irs.gov/forms-pubs/about-schedule-c-ez-form-1040
  3. https://www.irs.gov/pub/irs-dft/f1040sc--dft.pdf
  4. https://www.irs.gov/newsroom/irs-sets-2026-business-standard-mileage-rate-at-725-cents-per-mile-up-25-cents · https://www.irs.gov/pub/irs-irbs/irb26-29.pdf
  5. https://www.irs.gov/taxtopics/tc554