1099 Tax Deductions: Every Write-Off You’re Entitled To

Received a 1099-NEC or 1099-K? As an independent contractor, freelancer, or gig worker, you’re taxed on your profit — not your gross income. Every legitimate business expense you can document reduces both your income tax and your self-employment tax. This is a complete guide to every deduction available to 1099 workers in 2025.

Why Deductions Matter More for 1099 Workers

Unlike W-2 employees, you pay both sides of Social Security and Medicare — 15.3% self-employment tax on top of income tax. Every dollar of deductions reduces your net profit, which lowers both taxes simultaneously. A $5,000 deduction could save a 1099 worker $2,000 or more in combined taxes depending on their bracket.

The Top 1099 Deductions — Ranked by Impact

1. Home Office Deduction

If you work from home and have a dedicated space used regularly and exclusively for business, you can deduct a portion of your rent or mortgage interest, utilities, insurance, and repairs. The simplified method gives you $5/sq ft (up to 300 sq ft = $1,500 max). The actual expense method is often much larger. This is the most underclaimed deduction among 1099 workers who work from home.

2. Business Mileage

Every mile you drive for a business purpose — client visits, job sites, supply runs, business meetings — is worth 70 cents in 2025 (67 cents in 2024). Commuting to a regular office doesn’t count, but driving between clients, to the hardware store for a job, or to a coworking space all do. Parking and tolls are deductible on top of the mileage rate.

3. Health Insurance Premiums

Self-employed individuals who pay their own health insurance can deduct 100% of premiums for themselves, their spouse, and their dependents. This is one of the most valuable above-the-line deductions available — it reduces your AGI directly. The deduction is limited to your net self-employment income for the year. This is taken on Schedule 1, not Schedule C.

4. Retirement Contributions (SEP-IRA, Solo 401k)

1099 workers can contribute to a SEP-IRA (up to 25% of net self-employment income, max $70,000 in 2025) or a Solo 401(k). These contributions are fully deductible, reduce your AGI, and build your retirement savings simultaneously. This is the highest-impact deduction available to high-earning 1099 workers.

5. Phone & Internet

The business-use percentage of your cell phone and home internet bill is deductible. If you use your phone 70% for business, 70% of your annual bill is a write-off. Goes on Schedule C, Line 25.

6. Software & Business Subscriptions

Every software tool you use for work is deductible — design apps, accounting software, project management tools, cloud storage, CRM platforms, video conferencing. 100% deductible as an ordinary and necessary business expense.

7. Professional Fees, Dues & Education

Accountant fees, attorney fees for business matters, professional licenses, trade association dues, and continuing education that maintains your current skills are all deductible. Schedule C, Line 27a.

8. Business Travel

When you travel away from your tax home overnight for business purposes, you can deduct airfare, hotel, 50% of meals, and ground transportation. The trip must be primarily for business.

9. The QBI Deduction (Up to 20% of Net Income)

The Qualified Business Income (QBI) deduction lets eligible self-employed individuals deduct up to 20% of their qualified business income from their federal taxable income — on top of all Schedule C deductions. For a 1099 worker with $80,000 net profit after expenses, QBI could shield an additional $16,000 from federal income tax. Claimed on Form 8995.

The Self-Employment Tax Deduction

You can deduct half of your self-employment tax — approximately 7.65% of net earnings — as an above-the-line deduction on Schedule 1. This doesn’t appear on Schedule C. It’s calculated on Schedule SE and flows to Schedule 1. On $70,000 of net self-employment income, this deduction is approximately $4,945.

What 1099 Workers Often Miss

• Bank fees and transaction costs — Stripe, PayPal, Square transaction fees are deductible
• Business insurance — Liability, E&O, and professional indemnity premiums
• Advertising and marketing — Website hosting, social media ads, business cards
• Office supplies and equipment — Computers, monitors, supplies (100% deductible)
• Coworking space — Rent for a coworking desk or office is a deductible rent expense

1099 Tax Deduction FAQ

What can I write off as a 1099 contractor?

As a 1099 contractor, you can deduct any ordinary and necessary business expense on Schedule C. The most common: home office, business mileage (70¢/mile in 2025), phone and internet (business-use %), software and subscriptions, professional fees, health insurance premiums, and retirement contributions.

How much should I set aside for taxes as a 1099 worker?

A common rule of thumb is 25–30% of every payment received. This covers the 15.3% self-employment tax plus federal income tax at your marginal rate. You must pay quarterly estimated taxes — due April 15, June 15, September 15, and January 15.

→ Try the free AI Deduction Finder to see all deductions that apply to your situation

This guide is for educational purposes only and does not constitute tax advice. IRS rules change — always consult a licensed CPA or tax professional for advice specific to your situation.