Business Expense Deduction Summarizer
Track and summarize your business expenses by category. See total deductions and estimated tax savings.
Enter Business Expenses
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50% deductible typically
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Accounting, legal, consulting
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How It Works
Business expenses reduce your taxable self-employment income, saving you both:
- Self-Employment Tax: ~15.3% savings
- Income Tax: Savings at your marginal rate
Common Deductible Expenses
- Office supplies, equipment, and furniture
- Software and online subscriptions
- Professional development and education
- Marketing and advertising
- Travel, transportation, and mileage
- Business meals (50% deductible)
- Professional services (accounting, legal)
- Business insurance and licenses
Frequently Asked Questions
What expenses are deductible?
Any expense that is "ordinary and necessary" for your business. It
must be common in your industry and helpful for your business operations.
Should I keep receipts?
Yes! Keep receipts for all business expenses. The IRS may request
documentation. Digital copies are acceptable.
What about mixed-use expenses?
For expenses with both personal and business use (like a phone),
deduct only the business percentage. Keep records of how you calculated the split.
Are meals 100% deductible?
Generally, business meals are 50% deductible. Some exceptions exist
(certain employee meals, food at events). Entertainment expenses are not deductible.
What about large equipment purchases?
You may be able to deduct the full cost using Section 179 or
depreciate over time. See our Section 179 calculator for details.
When do I report these?
Report business expenses on Schedule C (Form 1040) for sole
proprietors. The net profit after expenses is subject to SE tax and income tax.
Use Cases
- Organizing annual business expenses by IRS category before filing Schedule C
- Estimating combined self-employment tax and income tax savings from business deductions
- Tracking deductible expenses for freelancers, consultants, and sole proprietors
- Identifying commonly overlooked deduction categories to reduce taxable income
- Generating an expense summary for your accountant or tax preparer
Assumptions & Limitations
- Business meals are calculated at 50% deductibility per current IRS rules
- Self-employment tax savings are estimated at 15.3% on 92.35% of net earnings
- Income tax savings use a flat 22% estimate; actual savings depend on your marginal tax bracket
- All entered expenses are assumed to be ordinary and necessary business expenses
- Does not account for Section 179 or depreciation for large equipment purchases
- Does not separate home office or vehicle expenses, which have their own rules
Sources & References
- IRS Publication 535 — Business Expenses
- IRS Publication 334 — Tax Guide for Small Business
- IRS Schedule C — Profit or Loss from Business
- IRS Publication 463 — Travel, Gift, and Car Expenses
- IRS Deducting Business Expenses — Overview of deductible business costs
Disclaimer: This calculator provides estimates for educational purposes only. It does not constitute tax advice. Consult a qualified tax professional for advice specific to your situation.