What Schedule C actually is
If you drive, deliver, freelance, or run any kind of side business, Schedule C is probably the most important tax form you'll touch every year. Schedule C is an IRS tax form that reports profit or loss from a business, and freelancers and other self-employed people often must file it. You attach it to your regular Form 1040 when you file.
Sole proprietors or single-member LLCs typically use the form. That covers almost every gig worker: you don't need to have registered a business or hired anyone. Sole proprietors, single-member LLCs, freelancers and independent contractors, gig workers like rideshare drivers and delivery workers, and side business owners typically file a Schedule C.
A lot of people assume a side hustle "doesn't count" unless they got a tax form for it. That's not how it works. You need to report all self-employment income on Schedule C, even if it comes from odd jobs, occasional freelance projects, or part-time gig work, and there's no minimum business size required to file this form.
Why it exists
Schedule C exists because gig and freelance work doesn't come with an employer withholding taxes from a paycheck. Schedule C is a place to report the revenue from your business and the types of expenses you incurred to run it — your business income minus your business expenses is your net profit or loss, which you then report as income on Form 1040.
That net profit number matters twice. It gets taxed as regular income, and separately, it's used to figure self-employment tax — the Social Security and Medicare tax a traditional employer would normally split with you. The current self-employment tax rate is 12.4% for Social Security and 2.9% for Medicare — a total of 15.3% — applied to 92.35% of your net earnings.
If your net profit from self-employment is small, you may not owe that extra tax. If you earned $400 or more in profit, you'll need to fill out Schedule SE to calculate your self-employment taxes. Below that, you still generally report the income, but the self-employment tax piece doesn't kick in.
Walking through the form
Schedule C is laid out in sections, and most gig and side-hustle workers will only deal with a handful of them.
The header (Lines A–J). This is where you describe your business — for example, "rideshare driving" or "freelance graphic design" — and give basic details like your business name if you use one. Describe the business or professional activity that provided your principal source of income, and if you owned more than one business, complete a separate Schedule C for each one. So if you drove for a rideshare app and also did freelance photography, those are two separate Schedule Cs.
Part I — Income. Here you enter gross receipts from your trade or business — the total money that came in before any expenses are subtracted. This includes cash, app payouts, and anything reported on a 1099, whether or not you actually received that tax form.
Part II — Expenses. This is where deductions live: advertising, supplies, phone costs tied to the work, and more. This is where fields for different types of expenses come in — you can deduct any expense that's "ordinary and necessary" for your business, including things like advertising, travel, depreciation, insurance and rent. If you use your car for the work, this is also where mileage or vehicle expenses come in. If you drive your personal car for work errands, you multiply your vehicle expenses or mileage by the percentage of time you use the car for work.
Part III — Cost of Goods Sold. This only applies if you buy or make physical products to resell — think an Etsy shop or a reseller business. Most delivery and rideshare drivers skip this section entirely.
Part IV — Vehicle information. You fill this out only if you claimed car or truck expenses back in Part II, with details like total miles driven for the year.
Part V — Other expenses. A catch-all list for deductible costs that didn't fit the standard categories above.
At the bottom, everything resolves into one number: net profit or loss. That figure is what carries over to the rest of your tax return.
What you need before you start
Before sitting down with the form, gather:
A record of total income from each gig app, client, or platform
Receipts or statements for business expenses
Mileage records if you drove for work
Any 1099 forms you received
You'll want your business income statement and balance sheet for the tax year, receipts for your business expenses, and inventory records if you have inventory.
A simple example
Say, for example, a delivery driver brought in $18,000 in gross payouts over the year from various gig apps (this is just an illustrative example, not a real case). They spent money on gas, phone costs tied to the apps, and car maintenance — let's say those add up to $6,000 in deductible expenses. Their net profit on Schedule C would be $12,000, and that's the number that flows into both their income tax and their self-employment tax calculation.
Keeping it manageable
Schedule C gets a lot easier when you track income and expenses as the year goes along instead of trying to reconstruct everything in April. Keeping gig payouts and business spending in a separate account can also make it simpler to see, at a glance, what counts as business income versus personal spending when tax season rolls around.
Schedule C isn't optional paperwork for "real" businesses only — if money came in from gig or freelance work, it belongs on this form, even if the amount was small.