What you can write off as a small business or freelancer
Business expenses lower the profit you pay tax on if they’re ordinary and necessary for your work. Common write-offs include supplies, software, the business share of phone and internet, advertising, platform fees and business mileage. A home office counts only if the space is used regularly and only for business. Commuting, everyday clothes, family meals and trips, and personal shares of mixed-use items usually don’t count. Keep receipts with notes, and be wary of “it’s all a write-off” advice.
Your checklist
- Use the “ordinary and necessary” test
- Supplies, software, ads, fees
- Business share of phone and car
- Home office only if work-only space
- Skip personal costs
- Keep receipts and notes
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The basic test
A business expense is generally deductible if it’s ordinary (common in your line of work) and necessary (helpful and appropriate for your business). Personal, family and living expenses aren’t.
Common write-offs
- Supplies, materials and software.
- The business share of your phone and internet.
- Advertising, website and marketing costs.
- Platform, bank and payment processing fees.
- Business mileage (standard mileage rate or actual costs).
- Professional services like tax preparation for the business.
- Business insurance and licenses.
- Education that improves skills in your current business.
- Business meals are often only partly deductible.
Home office
You may deduct a home office if a specific area is used regularly and exclusively for business. A simplified method based on square footage is available.
Big purchases
Equipment like computers or tools is often deducted over several years (depreciation), though some rules let you deduct it all at once.
Usually not deductible
Commuting to a regular workplace, everyday clothing, family meals and vacations, and the personal share of mixed-use items like a phone or car.
Keep records
Save receipts, note the business purpose, and keep business and personal money separate.
Be careful
“Everything is a write-off” advice can lead to back taxes, interest and penalties. Ask a tax professional when unsure.
Official sources, and where to look
- IRS: deducting business expensesirs.gov
- IRS: home office deductionirs.gov
- SBA: manage your financessba.gov
IRS standard mileage rate this yearIRS simplified home office deduction
Common questions
Can I write off my car?
You can deduct the business use, using either the standard mileage rate or a share of actual costs. Keep a mileage log. More ›
Can I deduct my phone?
The business-use share of your phone and service can be deductible. Personal use isn’t. More ›
What business expenses can I deduct?
Ordinary and necessary costs of running your business, like supplies, software, advertising, fees, business mileage and the business share of phone and internet. More ›
Can I deduct a home office?
If a specific area of your home is used regularly and only for business. A simplified method based on square footage is available. More ›
Can I deduct meals as a business expense?
Business meals are often only partly deductible, and only with a clear business purpose. Keep notes. More ›
Is my commute deductible?
Commuting to a regular workplace usually isn’t. Driving between business locations or to clients often is. More ›
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Not yet reviewed by an expert. Last checked 2026-10-29. This is general help, not legal, medical or professional advice. Rules are different in every state.