Self-Employed Tax Deductions: The Complete 2026 IRS Checklist

Everything below applies to Schedule C filers: sole proprietors, single-member LLCs (not taxed as S-corps), freelancers, and independent contractors receiving 1099-NEC forms. If you've elected S-corp status, some of these rules are different.

1. Home Office Deduction

The home office deduction has a reputation for being an audit trigger, which has scared a lot of self-employed people away from claiming it. That reputation is largely outdated — the IRS processes millions of home office deductions every year without issue. What matters is that you meet the requirements.

The IRS requires regular and exclusive use of the space for business. "Regular" means you use it consistently, not just occasionally. "Exclusive" means the space isn't used for personal activities — a guest bedroom that doubles as your office doesn't qualify under strict interpretation. A dedicated office that no one sleeps in does.

Under the actual method, deductible home expenses include: rent or mortgage interest, utilities, homeowner's/renter's insurance, repairs, and — if you own — depreciation. That depreciation piece adds up significantly over time but also triggers recapture taxes when you sell.

2. Vehicle & Mileage

The IRS sets a standard mileage rate each year for business driving. For 2024, it's 67 cents per mile (up from 65.5 cents in 2023). For 2025, the rate is 70 cents per mile — the highest it's ever been.

The IRS requires a contemporaneous mileage log — meaning you should be recording trips as they happen, not reconstructing them at year-end from memory. Your log needs: date, starting and ending location, business purpose, and miles driven. An app that tracks this automatically is worth far more than its subscription cost in deductions recovered.

Alternatively, the actual expense method lets you deduct the business-use percentage of all vehicle costs (gas, insurance, repairs, depreciation). If your car is 80% business-use, you deduct 80% of every car expense. This method generally wins if you have a newer, more expensive vehicle.

3. Health Insurance Premiums

Self-employed individuals can deduct 100% of health, dental, and vision insurance premiums for themselves, their spouse, and dependents. This isn't a Schedule C deduction — it goes on Schedule 1, directly reducing your adjusted gross income before the standard deduction.

Two key restrictions: First, the deduction can't exceed your net self-employment income. If you had a loss year, you can't deduct more than you earned. Second, you can't claim this deduction for any month when you were eligible to enroll in an employer's subsidized health plan (including a spouse's plan).

4. Retirement Plan Contributions

This is the single largest legal tax shelter available to self-employed people — and most don't use it to anywhere near its potential.

The tax math on retirement contributions is significant. If you're in the 22% federal bracket and your state has a 5% income tax, every $1,000 you contribute to a SEP-IRA saves you $270 in taxes this year — plus the contribution grows tax-deferred. A maxed SEP-IRA on $100K income saves roughly $6,750 in taxes in a single year.

5. Equipment, Technology & Software

Under Section 179, you can deduct the full cost of qualifying business equipment in the year you buy it, rather than depreciating it over 5–7 years. The 2024 Section 179 limit is $1,220,000— far more than most self-employed people will ever spend on equipment.

6. Phone & Internet (Business Portion)

You can't deduct your entire phone and internet bill — only the business-use percentage. If you use your phone 60% for business, deduct 60% of your monthly bill. The IRS doesn't specify how to calculate this percentage, but whatever method you use should be defensible and consistent.

A separate business phone line, dedicated business internet connection, or a second phone used exclusively for work qualifies at 100%. If you're working from home and your personal internet is your business internet, the home office deduction likely already captures a portion of this — don't double-count.

7. Business Meals (50% Deductible)

Meals with clients, prospects, or business partners are 50% deductible when there's a genuine business discussion before, during, or after the meal. The IRS is specific about what they want in your records:

8. Education & Professional Development

Courses, workshops, books, and conferences that maintain or improve skills in your currentbusiness are deductible. A copywriter taking an advanced writing workshop — deductible. A graphic designer buying books on typography — deductible. A software developer attending a tech conference — deductible.

The line: education that qualifies you for a new career or business is not deductible (that's personal capital investment). A marketing consultant getting an MBA to switch into medicine — not deductible. The same consultant taking marketing strategy courses — deductible.

9–15. Additional Deductions Worth Claiming

IRS Receipt Requirements: What You Actually Need to Keep

Technically, the IRS requires receipts for expenses over $75. In practice, keeping receipts for everything is the right move — because auditors don't always respect the $75 threshold, and a deduction you can't document will be disallowed.

Audit Red Flags for Self-Employed Filers

The IRS uses statistical benchmarks to flag returns that look unusual relative to income level and industry. Some patterns that draw extra scrutiny: