Small Business Tax Deductions You Should Not Miss in 2026

Small business tax deductions can significantly reduce your tax burden, but many business owners leave money on the table by missing eligible write-offs. This guide covers the most commonly overlooked deductions for 2026.

Home Office Deduction

If you use a dedicated space in your home exclusively for business, you may qualify for the home office deduction. You can use the simplified method ($5 per square foot, up to 300 sq ft) or the regular method based on actual expenses.

Vehicle and Mileage

Business-related driving is deductible. Track your mileage carefully using an app and choose between the standard mileage rate (67 cents per mile in 2026) or actual vehicle expenses, whichever gives you a larger deduction.

Business Meals

Business meals are 50% deductible when directly related to business discussions. Keep receipts and note who you dined with and the business purpose. The meal must not be lavish or extravagant.

Health Insurance Premiums

Self-employed individuals can deduct 100% of health insurance premiums for themselves and their families. This includes medical, dental, and qualifying long-term care insurance.

Retirement Contributions

Contributions to SEP IRAs, SIMPLE IRAs, or Solo 401(k) plans are tax-deductible and help you save for retirement. Contribution limits vary by plan type, so consult with a tax professional to maximize this benefit.

Professional Development

Costs for education, training, conferences, and professional development that maintain or improve skills related to your business are deductible. This includes courses, books, subscriptions, and industry event fees.

Work with a Tax Professional

A qualified tax professional can identify deductions specific to your situation and ensure you are taking full advantage of every opportunity. The cost of tax preparation is itself deductible.