“What can I write off on my taxes?” is one of the most common tax questions — and one of the least clearly answered. This guide breaks it down by situation, in plain English, with no jargon.
First: Deduction vs. Tax Credit — What’s the Difference?
A deduction reduces your taxable income. A credit reduces your actual tax bill dollar-for-dollar. Both are valuable, but credits are generally worth more. This guide focuses on deductions (write-offs).
If You’re a Homeowner
- Mortgage interest — Deductible on loans up to $750,000 if you itemize (guide →)
- Property taxes — Up to $10,000 combined with state income tax (SALT cap) (guide →)
- Home office — If you’re self-employed and use a dedicated space for work (guide →)
- Home improvements — Usually not immediately deductible, but they reduce capital gains when you sell (guide →)
Homeowners with a mortgage often benefit from itemizing. See: Complete home deduction guide →
If You’re Self-Employed or a Freelancer
Self-employed workers have access to some of the most powerful deductions available:
- Business expenses — Any ordinary and necessary cost of running your business
- Health insurance premiums — 100% deductible above the line (guide →)
- Retirement contributions — SEP-IRA, Solo 401(k)
- Home office — Dedicated workspace (guide →)
- Vehicle mileage — 67¢/mile for 2024 business driving (calculator →)
- Half of self-employment tax — Automatic above-the-line deduction
See the full list: Business tax deductions guide →
If You Have Significant Medical Expenses
- Doctor visits, hospital bills, surgeries
- Prescription drugs and medical equipment
- Dental and vision care
- Therapy and mental health treatment
- Medical travel costs
You can deduct the amount above 7.5% of your AGI if you itemize. Use our medical deduction calculator to see if you qualify. Full guide: Medical tax deductions →
If You’re a W-2 Employee
Post-2018, employees lost most of their itemized deductions. What remains for employees:
- Student loan interest — Up to $2,500, if within income limits
- Educator expense deduction — K-12 teachers can deduct up to $300 in classroom supplies
- Retirement contributions — 401(k), IRA contributions (may be deductible depending on income)
- HSA contributions — Pre-tax contributions to a Health Savings Account
- Charitable donations — If you itemize and donate to qualified organizations
Quick Reference by Expense Type
- ☑ Car wash — Only if used for business (check →)
- ☑ Coffee — Sometimes, if for a business meeting (check →)
- ☑ Gym membership — Usually no, with narrow exceptions (check →)
- ☑ Clothing — Only if required uniform not suitable for everyday wear (check →)
- ☑ Groceries — Rarely, and only for legitimate business meals (check →)
- ☑ Dog expenses — Only in very specific situations (check →)
The Bottom Line
What you can write off depends entirely on your situation — your filing status, income, whether you own or rent, and whether you’re employed or self-employed. The best approach is to use a checklist approach and review every category that applies to you.
Use our free AI Deduction Finder to describe your situation and get personalized write-offs. Or explore: What can I write off on my taxes — complete guide →
This article is for educational purposes only. Tax laws change and vary by situation — consult a CPA for personalized advice.