As an independent contractor, you can deduct virtually any cost that is ordinary and necessary for your work: home office space, vehicle use, health insurance, retirement contributions, equipment, supplies, software, advertising, professional fees, continuing education, business travel, and half the cost of business meals. Every legitimate deduction cuts two taxes at once — your federal income tax and the 15.3% self-employment tax — which is why an expense is worth more to you than to a W-2 employee spending the same dollar. The list below covers what qualifies, how to calculate it, and where it goes on your return.
The Test Every Expense Has to Pass
A business deduction has to be both ordinary and necessary for your line of work. Ordinary means the cost is common and accepted in your industry. Necessary means it is helpful and appropriate for the business; it does not have to be essential or unavoidable.1Internal Revenue Service. Ordinary and Necessary A graphic designer buying font licenses and a plumber buying pipe fittings both pass easily because those costs are standard in their trades.
Personal expenses never qualify, even when they feel work-adjacent. Your daily commute, clothing suitable for everyday wear, and household groceries are all nondeductible. The IRS pays closest attention to costs that blur the personal and business line, like a laptop used for both streaming and client work, or a phone bill covering personal calls. For mixed-use items you deduct only the business portion, and you need records that back up the split.
Everyday Operating Costs
Most routine costs of running the business are fully deductible in the year you pay them. That includes professional fees paid to attorneys and accountants, business liability insurance, advertising and marketing, office supplies, and software subscriptions. Licensing fees your city or state requires you to maintain qualify, along with dues to professional associations tied to your trade.
Continuing education is deductible as long as the training maintains or improves skills you already use in your current business. A freelance web developer taking an advanced JavaScript course can deduct it. That same developer enrolling in law school cannot, because education qualifying you for an entirely new career is treated as personal.
If you launched recently, you can immediately deduct up to $5,000 in startup costs during your first year of operation. That $5,000 allowance shrinks dollar-for-dollar once total startup costs exceed $50,000, and any remainder is spread evenly over 180 months starting from the month you opened for business.2Office of the Law Revision Counsel. 26 US Code 195 – Start-up Expenditures Startup costs include market research, scouting locations, and pre-opening advertising.
Home Office
You can claim a home office deduction if you use part of your home exclusively and regularly as your principal place of business. Exclusive use means the space serves no personal purpose — a desk in the corner of your bedroom counts only if that area is never used for anything else. You also qualify if you use the space to meet clients or customers in the normal course of business, even when it is not your primary workspace.3Internal Revenue Service. Simplified Option for Home Office Deduction
There are two ways to calculate it. The simplified method gives you $5 per square foot of dedicated office space, up to 300 square feet, for a maximum of $1,500 a year.3Internal Revenue Service. Simplified Option for Home Office Deduction No utility bills, no allocation formulas. Just measure and multiply.
The actual expense method takes more work but usually produces a larger deduction. Total the costs of running the home — mortgage interest or rent, real estate taxes, utilities, insurance, and repairs — then multiply by the percentage of your home’s square footage that the office occupies. A 200-square-foot office in a 2,000-square-foot house gives you a 10% share. Repairs made solely to the office space are 100% deductible. Depreciation on the business portion of your home is also available under this method, though claiming it triggers depreciation recapture when you eventually sell the home, which is worth factoring into any long-term plan.
Vehicle Use
Contractors who drive for business choose between two calculation methods. Either way, commuting from home to a regular workplace does not count as business mileage.
Standard Mileage Rate
The IRS standard mileage rate for business driving in 2026 is 72.5 cents per mile.4Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile That single rate covers gas, oil, maintenance, insurance, registration, and depreciation, so none of those costs are deductible separately when you use this method. Parking fees and tolls on business trips are still deductible on top.
The standard rate requires a contemporaneous mileage log. Each entry needs the date, destination, business purpose, and miles driven. Contemporaneous means recorded at or near the time of the trip, not reconstructed from memory in April. Missing this log is one of the fastest ways to lose a vehicle deduction during an audit.
Actual Expense Method
The actual expense method lets you deduct the business percentage of every vehicle cost: fuel, repairs, tires, insurance, registration, loan interest, and depreciation or lease payments. If 75% of your annual miles are for business, you deduct 75% of each cost. You still need a mileage log to establish that percentage. Once you choose the actual expense method for a particular vehicle, you cannot switch back to the standard mileage rate for that vehicle in later years, and passenger vehicles are subject to annual depreciation caps.5Internal Revenue Service. Rev. Proc. 2026-15
Trucks and SUVs with a gross vehicle weight rating above 6,000 pounds escape the passenger-vehicle depreciation caps and can qualify for a much larger first-year write-off under Section 179, though SUVs between 6,000 and 14,000 pounds face a $32,000 cap on the Section 179 portion. The vehicle has to be used more than 50% for business to qualify. You can find the weight rating on the sticker inside the driver-side door frame.
Travel and Meals
Travel is deductible when the trip takes you away from your tax home overnight for business. Your tax home is the city or metro area where your principal place of business is located, which is not necessarily where you live. Deductible costs include airfare, train tickets, rental cars, rideshares, lodging, dry cleaning while traveling, and tips.
When a trip mixes business and personal days, transportation costs (flights, train fare) are fully deductible only if the trip is primarily for business. Personal side excursions never are. Extend a three-day conference by two days of sightseeing and you deduct the hotel and meals for the business days but not the personal ones; the airfare stays deductible because the primary purpose was business.
Self-employed individuals can use the federal per diem rate for meals on the road instead of tracking every receipt. The standard meal allowance varies by city and is published by the GSA each fiscal year.6Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses Per diem for lodging is not available to self-employed taxpayers, only the meal portion.
Business meals — meeting a client, discussing a project with a subcontractor — are deductible at 50% of the cost.7eCFR. 26 CFR 1.274-12 – Limitation on Deductions for Certain Food or Beverage Expenses The meal cannot be lavish or extravagant, and you or an employee must be present when the food is provided.8Internal Revenue Service. Income and Expenses 2 Meals during overnight business travel follow the same 50% rule.
Entertainment is not deductible at all under current tax law, even if you discuss business at the event. Take a client to dinner and then to a basketball game and only the meal is deductible (at 50%). You will need a separate receipt or invoice showing the food cost apart from the entertainment.
Equipment and Other Tangible Property
When you buy equipment, furniture, or other long-lasting assets, you have several ways to write off the cost quickly. Section 179 lets you deduct the full purchase price of qualifying equipment in the year you place it in service, up to a statutory base limit of $2,500,000 (indexed for inflation), which covers virtually any contractor’s purchases.9Office of the Law Revision Counsel. 26 USC 179 – Election to Expense Certain Depreciable Business Assets The asset must be used more than 50% for business.
For qualifying property acquired after January 19, 2025, 100% bonus depreciation is also available, letting you write off the entire cost in the first year without electing Section 179.10Internal Revenue Service. Treasury, IRS Issue Guidance on the Additional First Year Depreciation Deduction Amended as Part of the One Big Beautiful Bill Either route produces the same result for most purchases: a full deduction in year one. Depreciation of any kind is reported on Form 4562.11Internal Revenue Service. Instructions for Form 4562
For smaller purchases there is a simpler path. Under the de minimis safe harbor, any tangible item costing $2,500 or less per invoice or per item can be deducted immediately as an expense with no depreciation schedule at all. There is no annual cap on how many items you handle this way. You claim the election by attaching a statement to your return. For contractors buying laptops, tools, or office furniture under that threshold, this is the cleanest option.
Health Insurance Premiums
If you pay for your own health insurance and are not eligible for coverage through a spouse’s employer plan, you can deduct 100% of premiums for yourself, your spouse, and your dependents.12eCFR. 26 CFR 1.162(l)-1 – Deduction for Health Insurance Costs of Self-Employed Individuals Dental and vision premiums qualify too.
The self-employed health insurance deduction is an adjustment to income on Form 1040, not a Schedule C expense. That distinction matters: it reduces income tax but not self-employment tax. The deduction cannot exceed your net self-employment income for the year, and if you receive premium tax credits, only the portion of the premium you actually paid out of pocket is deductible.
Retirement Plan Contributions
Retirement plans built for self-employed people double as some of the largest deductions available. The two most common are the SEP-IRA and the Solo 401(k).
A SEP-IRA allows contributions of up to 25% of your net self-employment earnings, with a maximum of $72,000 for 2026. The math for self-employed individuals works out to roughly 20% of net profit after the deductible half of self-employment tax is subtracted, because your compensation and contribution come from the same pool.
A Solo 401(k) lets you contribute as both employee and employer. On the employee side you can defer up to $24,500 in 2026, or $31,000 if you are 50 or older. On the employer side you can add up to 25% of net self-employment compensation. The combined total across both roles caps at $72,000 for 2026, higher with catch-up contributions. The Solo 401(k) is often better for contractors with moderate income because the employee deferral lets you shelter more at lower income levels than a SEP-IRA’s percentage-only formula would.
Contributions to either plan are deducted as adjustments to income on Form 1040, not on Schedule C, so they reduce income tax but not self-employment tax.
The 20% Qualified Business Income Deduction
On top of your actual business expenses, you may qualify for an additional 20% deduction on your qualified business income under Section 199A. This deduction was made permanent by legislation signed in 2025 and is available whether you itemize or take the standard deduction. If your Schedule C shows $80,000 in net profit and you qualify, you could deduct an additional $16,000, reducing income subject to federal income tax (though not self-employment tax).
Below certain income thresholds, the full 20% is available with no additional limitations. Above those thresholds the calculation gets more complex, and contractors in specified service fields — including health care, law, accounting, consulting, financial services, and performing arts — face phase-outs that can eliminate the deduction entirely at higher income levels. The thresholds are adjusted annually, so check the current year’s Form 8995 instructions for the exact figures.
This deduction is separate from Schedule C expenses. It is calculated after your net business profit is determined and reported on Form 8995, or Form 8995-A for more complex situations. Many contractors below the income thresholds qualify for the straightforward version, which takes about five minutes to complete.
Records That Will Hold Up
Documentation is where deductions survive or die. The IRS requires records that prove the amount, date, place, and business purpose of every expense you claim, created at or near the time of the transaction.13Internal Revenue Service. Topic No. 305, Recordkeeping
Keep receipts, bank statements, invoices, and canceled checks. A valid receipt shows the date, vendor name, amount paid, and a description of what you bought. The description matters more than people think. “Office Depot $47.83” tells an auditor nothing; “Office Depot — printer ink cartridges” establishes the business purpose on its face.
Open a bank account and credit card used only for business. That single step eliminates the most common recordkeeping headache: disentangling business and personal charges on the same statement. Accounting software or a well-maintained spreadsheet handles category tracking through the year.
Digital records are fully acceptable. Scanning or photographing paper receipts and storing them electronically satisfies the IRS as long as the images are legible, organized, and accessible during an examination. Keep records for at least three years from the date you file (or from the due date, whichever is later).14Internal Revenue Service. How Long Should I Keep Records If you underreport income by more than 25%, the IRS has six years to audit, so holding records longer is prudent when income fluctuates.
Travel, meals, and vehicle expenses face heightened rules. For each occurrence you need the date, location, amount, business purpose, and the business relationship of anyone you met with. A mileage log has to be maintained trip by trip throughout the year. Reconstructed logs are almost always disallowed. The burden of proof rests entirely on you.
Where It All Goes on Your Return
Business income and expenses flow through Schedule C (Profit or Loss From Business), which attaches to your personal Form 1040.15Internal Revenue Service. About Schedule C Form 1040 Profit or Loss From Business Sole Proprietorship You report gross business receipts at the top, subtract expenses by category (advertising, supplies, home office, vehicle, and so on), and arrive at net profit or loss. That net figure transfers to your 1040 as business income.
The same net profit feeds Schedule SE, which calculates your self-employment tax at 15.3%: 12.4% for Social Security plus 2.9% for Medicare. The Social Security portion applies only to net earnings up to $184,500 in 2026; the Medicare portion applies to all net earnings with no cap.16Social Security Administration. Contribution and Benefit Base You deduct half of the resulting self-employment tax on your 1040 as an adjustment to income, which reduces income tax but not the self-employment tax itself.17Internal Revenue Service. Instructions for Schedule SE (Form 1040)
Every dollar of legitimate Schedule C expense cuts both income tax and self-employment tax. That is why a deduction is worth more to you than to a W-2 employee spending the same amount: you save at your marginal income tax rate plus roughly 14.1% in self-employment tax.
Estimated Tax Payments
You do not have taxes withheld from your pay, so the IRS expects quarterly estimated payments instead. For the 2026 tax year, those payments are due April 15, June 15, and September 15 of 2026, and January 15, 2027.18Internal Revenue Service. 2026 Form 1040-ES
You owe estimated tax if you expect to owe $1,000 or more at filing. To avoid an underpayment penalty, pay at least 90% of your current year’s total tax liability, or 100% of last year’s tax (110% if your prior-year adjusted gross income exceeded $150,000).18Internal Revenue Service. 2026 Form 1040-ES The 100%/110% safe harbor is the easier target for most contractors because it does not require predicting current-year income. Just look at last year’s return and divide by four. You can also skip the January 15 payment if you file your return and pay the full balance by February 1.