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Business Tax8 min readMar 17, 2026
Small Business Tax Guide: What You Need to Know
A comprehensive guide for small business owners covering entity types, deductions, quarterly taxes, and common mistakes to avoid.
Small Business Tax Guide
Running a small business comes with many tax responsibilities. Understanding them can save you money and keep you compliant.
Choosing the Right Business Structure
- Sole Proprietorship: Simplest structure, income reported on your personal return
- LLC: Flexible structure with liability protection
- S-Corporation: Can reduce self-employment taxes
- C-Corporation: Separate tax entity with its own rates
Key Business Deductions
- Business expenses: Office supplies, software, equipment
- Vehicle expenses: Mileage or actual expenses for business use
- Home office: Dedicated space used exclusively for business
- Employee salaries and benefits
- Professional services: Legal, accounting, consulting fees
- Business insurance premiums
Quarterly Estimated Taxes
If you expect to owe $1,000 or more in taxes, you must make quarterly estimated payments. Due dates are typically April 15, June 15, September 15, and January 15.
Common Mistakes to Avoid
- Mixing personal and business finances
- Missing quarterly payment deadlines
- Failing to track all deductible expenses
- Not keeping proper records and receipts
- Ignoring state and local tax obligations
Ready to optimize your business taxes? Schedule a consultation with our team.