Schedule C for Gig Workers: A Plain-English Walkthrough

Who files Schedule C

Schedule C (Form 1040) is for anyone who operated a business as a sole proprietor: rideshare and delivery drivers, online sellers, freelancers, consultants, tutors, and most single-member LLCs. You don’t need to register anything or think of yourself as a “business owner.” If you did work or sold goods for profit and weren’t someone’s employee for that income, Schedule C is your form.

Two ground rules. First, it’s one Schedule C per business: driving for two rideshare apps is typically one business, but driving plus a genuinely separate reselling operation means two forms. Spouses each file their own. Second, the famous $400 floor is about self-employment tax, not about reporting. Once net self-employment earnings hit $400, you must file Schedule SE and pay SE tax. Below $400 you skip Schedule SE, but the income itself is still taxable and still reported.

Part I: income

Part I is your gross receipts: everything the business brought in before any expenses. Three things gig workers get wrong here:

• Match your forms. The IRS receives copies of every 1099-K and 1099-NEC issued to you. Your reported income should be at least the total of those forms; an unexplained shortfall is an easy automated flag. If a form overstates things (it includes fees or refunds, for instance), report the gross and deduct the difference as expenses rather than shrinking the income line.
• Income without forms still counts. Cash tips, small clients under the 1099-NEC threshold, payments between friends for real work: all of it is taxable income and belongs in Part I. Forms are how the IRS finds out, not what makes income taxable. Our 1099-K guide covers the reporting thresholds in detail.
• Returns and refunds you paid back to customers get their own line in Part I, reducing gross receipts before you even get to expenses.

Part II: the expense lines gig workers actually use

Part II (lines 8 through 27) is where your tax bill shrinks. Every ordinary and necessary cost of running the gig is deductible, and for most side hustlers a handful of lines do nearly all the work:

• Car and truck expenses (line 9). Usually the biggest deduction for drivers. You choose between the standard mileage rate, which is 72.5 cents per business mile for 2026, or actual vehicle costs multiplied by your business-use percentage. The standard rate already covers gas, maintenance, repairs, insurance, and depreciation; business parking and tolls are deductible on top of it. Example from the math: 8,000 business miles × $0.725 = a $5,800 deduction.
• Commissions and fees. Platform commissions, payment processing fees, and marketplace listing fees come out of almost every gig payout. If your 1099-K reports gross payments, this is where those fees come back off.
• Supplies (line 22). Hot bags, phone mounts, packaging tape, small tools: the consumable stuff you buy to do the work.
• Phone and data. Gig work runs on your phone. The business-use percentage of your phone and data plan is deductible; an honest split backed by a quick usage review is far more defensible than claiming the whole bill.
• Advertising (line 8). Listing promotions, social ads, business cards, a website for your services.

If you work from home, a home office deduction may also be available for space used regularly and exclusively for the business. Our home office deduction calculator walks through whether you qualify and what it’s worth.

Part III: cost of goods sold (sellers only)

If you sell physical products, the materials and inventory that went into what you sold are handled in Part III rather than as a regular expense line. The inventory method asks what you started the year with, what you bought or made, and what was left at year-end; the difference is your cost of goods sold, and only the cost of items actually soldis deducted this year. Depending on your accounting method, some sellers instead deduct materials as supplies. Either way, the principle is the same: a reseller’s taxable profit is the sale price minus what the goods cost, not the full sale price. Drivers and service freelancers can skip Part III entirely.

Part IV: vehicle questions, and why the mileage log matters

Claim car expenses on line 9 and the form follows up in Part IV: when you placed the car in service, your business, commuting, and other miles for the year, and whether you have written evidence to support it. Those questions are signed under penalty of perjury, and vehicle deductions are among the most commonly examined items on gig-worker returns.

The substantiation rules in IRS Publication 463 are specific: your records should show the miles, date, destination, and business purpose of each trip, and they should be contemporaneous, meaning kept at or near the time of the trip rather than reconstructed in April. Two more rules trip up drivers. Commuting from home to a regular workplace is never deductible; for gig drivers, miles between pickups while you’re available for work in the app are generally business miles, but the drive from home before going online is generally commuting. And the standard-rate choice is locked at the start: to use the standard mileage rate on a car at all, you must choose it in the first year that car is used for business. The full rules are in our mileage log guide.

What happens to your net profit

Income minus expenses gives the number the whole form exists to produce: net profit. It travels to two places at once:

• Schedule 1, line 3, where it joins your other income for regular federal income tax.
• Schedule SE, which computes self-employment tax: 15.3% (12.4% Social Security plus 2.9% Medicare), applied to 92.35% of net earnings, per IRS Topic 751. In 2026 the 12.4% Social Security piece applies up to the $184,500 wage base; the Medicare piece has no cap.

This is why every dollar of legitimate expense matters twice: it reduces both income tax and SE tax. It’s also why net profit, not the gross on your 1099s, is the number to plan around.

Two deductions that live outside Schedule C

Half of your SE tax is deductible from gross income. The logic: employers pay half of Social Security and Medicare for employees and deduct it as a business cost, so the self-employed get the equivalent break. It reduces your income tax (not the SE tax itself) and you get it without itemizing.

The self-employed health insurance deductionalso lives on Schedule 1, not Schedule C, and people look for it on the wrong form constantly. Premiums for yourself, your spouse, and dependents are deductible up to your net self-employment profit, with no itemizing required. The catch: it’s not available for any month you were eligible for an employer plan, whether through your own day job or a spouse’s.

One more break worth knowing about: the qualified business income (QBI) deduction lets most sole proprietors deduct 20% of qualified business income from their taxable income. It reduces income tax only, never SE tax, and you get it whether or not you itemize. It happens after Schedule C is done, so nothing on the form itself changes; it just makes the profit you computed there a little less expensive.

Common Schedule C mistakes

• Reporting net payouts as income.If the platform deposited your earnings after fees but issued a 1099-K for the gross, reporting only the deposits creates a mismatch with the IRS’s copy. Report the gross, deduct the fees.
• Stacking gas receipts on the standard mileage rate. The rate already includes gas, maintenance, repairs, insurance, and depreciation. Claiming those costs again on top of it is double-dipping. Parking and tolls are the exception; they go on top.
• Claiming commuting miles. The drive from home to where the work starts is generally not deductible, no matter how far it is.
• Reconstructing the mileage log in April. The substantiation rules expect contemporaneous records. A spreadsheet invented at filing time tends to fall apart under examination.
• Mixing personal spending into business lines. Groceries on the same card as supplies, a family trip coded as business travel. A separate account or card for the gig makes every expense line easier to defend.
• Forgetting income that came without a form. Cash tips and small direct payments are taxable whether or not anyone reported them.

Worked example: $80,000 net profit, single filer

Suppose your Schedule C lands on $80,000 of net profit, you file single, and you have no W-2 job:

• SE tax: $80,000 × 0.9235 × 0.153 = about $11,304
• Half of SE tax (deductible): $5,652
• Adjusted gross income: $80,000 − $5,652 = $74,348
• Minus the 2026 single standard deduction of $16,100: taxable income of $58,248
• Federal income tax: $5,800 on the first $50,400, plus 22% of the remaining $7,848 = about $7,527
• Total federal bill: roughly $18,830, or about $4,708 per quarterly estimated payment

Run your own numbers through the self-employment tax calculator. And if you expect to owe $1,000 or more in federal tax for the year, plan on quarterly estimated payments rather than one April bill: the 2026 due dates are April 15, June 15, September 15, and January 15, 2027, payable in minutes through IRS Direct Pay.

This guide is general information, not personalized tax advice. If your situation is unusual (inventory accounting, vehicle depreciation after switching methods, multiple businesses, or a loss year), a CPA usually saves you more than they cost. The numbers here are sourced from IRS publications and current at 2026-06-10; rates and thresholds change.