⚠️ This is educational content, not tax advice. Consult a qualified CPA for your specific situation. IRS rules change annually.

🏠 Home Office Deductions

Home office (simplified method) — $5/sq ft, up to 300 sq ft = max $1,500 deduction. No receipts needed.
Home office (regular method) — Actual expenses (rent/mortgage interest, utilities, insurance, repairs) × percentage of home used for business. More work but often higher deduction.
Internet service — Business percentage of your monthly bill (if you work from home 60% of the time, deduct 60%)
Phone bill — Business percentage of your cell phone plan
Office furniture — Desk, chair, monitor, keyboard. Section 179 lets you deduct the full cost in year one.
Office supplies — Paper, printer ink, pens, notebooks, sticky notes

💻 Technology & Equipment

Computer/laptop — Full cost via Section 179 if used primarily for business
Software subscriptions — Adobe Creative Cloud, Microsoft 365, Figma, Notion, Slack, Zoom, project management tools
Cloud hosting — AWS, Vercel, Heroku, domain names, SSL certificates
AI tools — ChatGPT Plus, GitHub Copilot, Midjourney — if used for business
Backup drives & storage — External drives, NAS, cloud backup services
Camera/audio equipment — If you create content, record courses, or do video calls with clients

📚 Professional Development

Online courses — Udemy, Coursera, LinkedIn Learning, bootcamps — if related to your current business
Books & publications — Business, industry, and technical books
Conferences & events — Registration fees, travel, and meals at conferences
Professional memberships — Industry associations, chambers of commerce, coworking memberships
Certifications — AWS, PMP, CPA exam prep — anything that maintains or improves current skills

🚗 Transportation & Travel

Mileage (standard rate) — 70¢/mile for 2026 (IRS rate). Track every business trip with an app.
Mileage (actual expenses) — Gas, insurance, maintenance, depreciation × business percentage. More recordkeeping but sometimes higher.
Parking & tolls — For business trips (not commuting to a regular office)
Business travel — Flights, hotels, rental cars, rideshares for client meetings, conferences, or remote work trips
Meals during travel — 50% deductible when traveling for business overnight

💼 Business Operations

Business insurance — Professional liability (E&O), general liability, cyber liability
Legal & accounting fees — CPA fees, tax prep, contract review, business formation costs
Business licenses & permits — State LLC fees, business licenses, professional licenses
Bank fees — Business checking account fees, PayPal/Stripe fees, wire transfer fees
Contractor payments — Subcontractors, virtual assistants, freelance designers — anyone you pay to help run your business
Coworking space — Monthly memberships or day passes

📣 Marketing & Client Acquisition

Website costs — Hosting, domain, design, maintenance
Advertising — Google Ads, Facebook/Instagram ads, LinkedIn ads, sponsored content
Business cards & print materials — Cards, brochures, portfolio prints
Client gifts — Up to $25/person/year deductible
Networking events — Meals at business meetings (50% deductible)
Portfolio & demo tools — Dribbble Pro, Behance, personal domain for portfolio

🏥 Health & Retirement

Self-employed health insurance — 100% deductible (medical, dental, vision premiums for you, spouse, and dependents). This is an above-the-line deduction — you get it even without itemizing.
HSA contributions — $4,300 individual / $8,550 family (2026 limits) if you have a high-deductible health plan
SEP-IRA contributions — Up to 25% of net self-employment income, max $70,000 (2026)
Solo 401(k) — Up to $23,500 employee contribution + 25% employer match, max $70,000 total. Best if your income is over $100K.
Self-employment tax (50%) — You deduct half of your SE tax as an adjustment to income. This happens automatically on Schedule SE.

🔑 The Deductions Most Freelancers Miss

Retirement contributions — 40% of freelancers don't contribute to any retirement account. A SEP-IRA on $100K income saves ~$7,500 in taxes immediately.
Health insurance premiums — Many freelancers don't realize these are fully deductible, not just an itemized deduction.
State and local taxes — If you pay state income tax or local business taxes, they're deductible (up to $10K SALT cap on personal return).
Home office — 52% of self-employed people who work from home don't claim the home office deduction. Even the simplified method is free money.
Business use of personal vehicle — Even occasional client visits, post office runs, and supply store trips add up to thousands of miles per year.

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📅 Key 2026 Tax Dates

January 15 — Q4 2025 estimated tax payment due
April 15 — 2025 tax return due + Q1 2026 estimated payment
June 15 — Q2 2026 estimated payment due
September 15 — Q3 2026 estimated payment due
October 15 — Extended 2025 tax return due

The Bottom Line

Every dollar of deductions saves you 25-40 cents in taxes (depending on your bracket + self-employment tax). A freelancer earning $100K who finds an extra $10,000 in deductions saves $3,000-4,000 in real money. That's worth an afternoon going through this checklist.

Action step: Go through each category above. For every item that applies to you, check whether you're currently tracking it. If not, start now — and consider talking to a CPA who specializes in self-employment to make sure you're not leaving money on the table.