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Deductions

Schedule C Deductions Freelancers Miss: Home Office, Mileage, Health Insurance, Retirement, and More

By Orion Luke · October 15, 2026 · 10 min read

Tax note: This article is general information for educational purposes — not tax advice. Tax law changes; verify figures against current IRS guidance and consult a tax professional for your situation.

Every dollar of legitimate business deduction does double duty for a freelancer: it reduces your income tax and your self-employment tax. A $1,000 deduction saves roughly $150 in SE tax alone, plus whatever your marginal income-tax rate is. Yet every year, freelancers leave thousands on the table — not from fraud, but from never learning what counts.

This guide covers the big commonly-missed deductions: home office, vehicle mileage, health insurance, and retirement contributions — plus the everyday categories that quietly add up. The standard is always the same: the expense must be ordinary (common in your line of work) and necessary (helpful and appropriate for your business).

Home office deduction

If you use part of your home regularly and exclusively for business, you can deduct the home-office portion of your housing costs. Two methods:

Simplified method: $5 per square foot of office space, up to 300 square feet — a maximum deduction of $1,500. No receipts, no depreciation math, no recapture worries when you sell. For most freelancers, this is the right choice.

Actual (regular) method: deduct the business percentage of mortgage interest or rent, utilities, insurance, repairs, and depreciation. If your office is 200 sq ft in a 1,000 sq ft home, you deduct 20% of those costs. This usually yields a bigger number than $1,500 — but it requires real records, and depreciation can complicate things when you sell the home.

The "exclusive use" rule is where people get tripped up: the space must be used exclusively for business. A desk in the corner of your bedroom that you also use for gaming doesn't qualify. It doesn't need to be a separate room — a clearly defined area used only for work counts — but mixed-use space doesn't.

The "regular use" rule: you must use it regularly, not occasionally. A few hours every week qualifies; twice a year doesn't.

Vehicle and mileage

If you drive for business — client meetings, supply runs, gig work, property visits — you can deduct vehicle costs one of two ways:

Standard mileage rate: multiply business miles by the IRS rate. For 2026, the rate is 72.5 cents per mile for January–June and 76 cents per mile for July–December. Drive 8,000 business miles evenly across the year: 4,000 × $0.725 + 4,000 × $0.76 = $2,900 + $3,040 = $5,940 in deductions. (Verify the current year's rates against IRS guidance — they change, sometimes mid-year, as they did in 2026.)

Actual expenses: deduct the business percentage of gas, insurance, repairs, depreciation, and lease payments. This wins for expensive-to-run vehicles; the mileage rate wins for economical cars driven a lot.

The log is the deduction. Whichever method you choose, you need a contemporaneous mileage log: date, destination, business purpose, and miles (odometer readings are best). The IRS is famously strict here — reconstructed-from-memory logs routinely fail in audits. Log it the day you drive it.

Commuting doesn't count. Driving from home to a regular workplace is commuting, not business mileage. But home-to-client, client-to-client, and home-to-temporary-work-location trips generally do.

Self-employed health insurance deduction

If you're self-employed and pay your own health, dental, or vision insurance premiums, you can generally deduct them — an above-the-line deduction, meaning you don't need to itemize. Key conditions:

This one is frequently missed by healthy freelancers who buy a marketplace plan, auto-pay the premium, and never connect it to their taxes.

Retirement contributions

Retirement contributions are among the largest deductions available to the self-employed — and the least used by young freelancers. The two main vehicles:

SEP IRA: contribute up to 25% of net self-employment earnings (with an annual cap set by the IRS — verify the current year's limit). Simple to set up, minimal paperwork.

Solo 401(k): for businesses with no employees besides you (and your spouse). Lets you contribute both as "employee" and "employer," which often allows larger contributions than a SEP at the same income. More paperwork, higher payoff.

Both reduce your taxable income dollar-for-dollar (traditional contributions). The exact limits change yearly — check current IRS figures before you contribute, and note that contributions for a tax year can often be made until the filing deadline.

The everyday categories that add up

Beyond the big four, Schedule C has a line for nearly everything a business spends money on. The ones freelancers most often forget to track:

What you can't deduct

Equipment and depreciation: Section 179 in plain English

Buy a $2,400 laptop for your freelance business and you don't have to deduct it $480 a year for five years. Section 179 lets you deduct the full cost of qualifying business equipment in the year you buy it and put it in service — computers, cameras, office furniture, machinery, and off-the-shelf software all generally qualify.

The rules: the equipment must be used more than 50% for business (a laptop that's 80% business, 20% Netflix gets an 80% deduction), and there are annual caps on total Section 179 deductions (set by statute — verify the current year's limit). For most freelancers buying normal equipment, the practical takeaway is simple: deduct it all this year instead of depreciating it. Bonus depreciation is a related provision that has phased down in recent years — check the current year's percentage before relying on it.

Keep the purchase receipt, note the date you started using it for business, and record the business-use percentage. That's the entire documentation burden.

Business vs. hobby: the profit motive test

Here's a trap for side hustlers: if your "business" loses money year after year, the IRS can reclassify it as a hobby — and hobby losses aren't deductible against other income. The rule of thumb is the 3-of-5 test: if the activity shows a profit in at least 3 of the last 5 tax years, it's presumed to be a for-profit business. Fail that and the IRS can still be convinced by evidence of profit motive (business plan, expertise, time invested, history of profits in similar ventures), but you're fighting uphill.

Practical meaning: a real Etsy shop that loses money its first two years while building inventory is fine. A "business" that's really a subsidized pastime for a decade is not. Run it like a business — separate accounts, records, a plan to profit — and document that you do.

Documentation standards: what "adequate records" actually means

The IRS doesn't require a specific format, but it does require specific elements. For each expense, be able to show:

A credit card statement shows the first three but not the fourth — which is why "I bought it for the business" needs a note, a category tag, or at minimum a consistent categorization system. For travel, entertainment, and vehicle expenses, the rules are stricter: contemporaneous logs (recorded at or near the time) carry far more weight than reconstructions. A mileage app or a notes-file entry made the same day beats a spreadsheet built in April.

Digital copies are fine — photograph or scan receipts; thermal-printer receipts fade within a year or two, so the photo is often the only lasting record.

A system beats a shoebox

The deductions above are worth thousands — but only if they're tracked. The freelancers who capture all of this aren't more disciplined; they just log expenses when they happen instead of reconstructing them in April. One running expense log, categorized by Schedule C line, updated weekly, turns tax season from archaeology into arithmetic.

General information only — not tax advice. Deduction rules, rates, and limits change; verify against current IRS guidance and consult a tax professional for your situation.

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