Can I Write Off ___?
Instantly check if any business expense is tax deductible. Search below or browse by category.
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Click any expense to see if it's deductible and learn the rules.
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Transportation
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How Business Deductions Work
The "Ordinary and Necessary" Test
The IRS allows deductions for expenses that are ordinary (common in your industry) and necessary (helpful for your business). Both conditions must be met.
Documentation Is Key
Always keep receipts showing who, what, when, where, and why for every expense. Without documentation, even valid deductions can be disallowed.
Mixed Use = Prorate
If you use something for both business and personal (like your car or phone), you can only deduct the business portion based on actual usage.
What's Never Deductible
Fines, penalties, personal expenses, and "lavish" spending are never deductible—even if related to business activities.
2025 Update: OBBBA Changes
The "One Big Beautiful Bill Act" restored 100% bonus depreciation for 2025 and increased Section 179 limits to $2.5M. However, office snacks and employer convenience meals drop to 0% deductible starting January 2026.
This tool is for educational purposes only and does not constitute tax advice. Always consult a qualified tax professional for your specific situation.