Self-Employed Tax Deductions: The Complete 2026 Write-Off List
Self-employed deductions are worth more than employee deductions because they come off before self-employment tax is calculated, not after. Every $1,000 of legitimate business expense saves roughly $153 in SE tax plus your marginal income tax rate on top. This is the full 2026 list, organised the way Schedule C is.
The rule behind every deduction
An expense is deductible if it is ordinary — common in your line of work — and necessary, meaning helpful and appropriate for the business. It does not have to be indispensable. What it must be is business-related, documented, and separated from personal use. Mixed-use items are deducted at their business-use percentage, not in full.
Vehicle and mileage
For most self-employed drivers, this is the biggest line on the return. The 2026 standard mileage rate is $0.70 per business mile, covering fuel, maintenance, insurance, and depreciation. Alternatively, deduct the business-use share of actual costs. Tolls and parking are deductible under either method.
Choose carefully in year one
Starting with actual expenses on a vehicle generally locks you out of the standard rate for that car in later years. Starting with the standard rate keeps both options open.
Home office
If a space is used regularly and exclusively as your principal place of business, deduct it. The simplified method is $5 per square foot up to 300 square feet, so a maximum of $1,500. The actual method deducts the business percentage of rent or mortgage interest, utilities, insurance, and repairs — usually larger for renters in high-cost cities. A qualifying home office also converts your first trip out each day from commuting into deductible business mileage.
Phone, internet, and software
Deduct the business-use percentage of your mobile bill and home internet. A defensible estimate backed by one month of usage review is enough. Fully deduct business-only tools: accounting software, cloud storage, design subscriptions, scheduling apps, and mileage trackers.
Health insurance premiums
Self-employed health insurance for you, your spouse, and dependants is deducted as an above-the-line adjustment on Form 1040, not on Schedule C. It reduces income tax but not self-employment tax, and it is unavailable for any month you were eligible for a subsidised employer plan through your own or a spouse's job.
Retirement contributions
A SEP-IRA allows roughly 20% of net self-employment income up to the annual cap. A Solo 401(k) adds an employee deferral on top of the employer portion, which usually produces a larger deduction at modest income levels. Both reduce taxable income but not self-employment tax.
Half of your self-employment tax
The employer-equivalent half of SE tax — 7.65% of net earnings — is deducted automatically on Form 1040. It happens through the calculation rather than a receipt, but it is a real deduction that many first-year filers do not realise they are already receiving.
Supplies, equipment, and depreciation
Items consumed within a year are deducted immediately. Longer-lived equipment such as laptops, cameras, and tools is depreciated, though Section 179 and bonus depreciation usually let you deduct the full cost in the year of purchase when the item is used more than 50% for business.
Education, licences, and professional fees
Courses that maintain or improve skills in your current business are deductible; training that qualifies you for a new profession is not. Licences, permits, professional memberships, trade publications, accounting fees, and the business portion of legal costs all qualify.
Advertising, marketing, and platform fees
Website hosting, domain registration, ads, business cards, portfolio sites, and the commissions or service fees platforms deduct before paying you are all deductible business expenses. Reconstruct platform fees from the annual summary rather than the net deposit figure.
Travel, meals, and business insurance
Overnight business travel is fully deductible: flights, lodging, ground transport, and 50% of meals. Local meals are deductible only when a genuine business discussion takes place. Liability insurance, commercial auto policies, and errors-and-omissions cover are deductible; personal life insurance is not.
The QBI deduction
The qualified business income deduction can remove up to 20% of net business profit from taxable income. It is calculated after Schedule C and applies to income tax only, with phase-outs at higher income for specified service trades. It is not an expense, so no spending is needed to claim it.
What is not deductible
Commuting from home to a regular workplace, everyday clothing even if bought for work, personal grooming, traffic fines, the personal share of any mixed-use asset, and the value of your own unpaid labour.
Recordkeeping that survives an audit
A dedicated business bank account and card removes most of the difficulty. Keep receipts for anything over $75, keep a contemporaneous mileage log, and reconcile monthly rather than in April. Three years is the standard retention window; six is safer if you have understated income by more than 25%.
Frequently asked questions
+How much can I deduct as self-employed?
There is no cap. You deduct every ordinary and necessary business expense, and deductions reduce both income tax and self-employment tax.
+Do I need receipts for everything?
Keep documentation for all expenses; receipts are expected above $75, and a mileage log is required for vehicle deductions regardless of amount.
+Can I deduct expenses if I had a business loss?
Yes, and the loss may offset other income, subject to hobby-loss and at-risk rules if losses repeat year after year.
+Is health insurance a Schedule C deduction?
No. It is an adjustment to income on Form 1040, so it lowers income tax but not self-employment tax.
+Can I write off my car payment?
Not the payment itself. Under actual expenses you deduct depreciation and the business share of costs; under the standard rate, $0.70 per business mile already includes them.
+What is the most missed self-employed deduction?
Mileage beyond app-tracked trips, home internet, platform fees, and the home office — especially by renters who assume ownership is required.
About the author
Javed Niamat · Founder & Editor, GigTax
Javed Niamat founded GigTax to make self-employment tax math understandable for rideshare drivers, delivery couriers, creators and freelancers. He builds and maintains every calculator on this site and writes the guides that explain the numbers behind them.
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