Johnson & Associates
Tax Planning

The Top 20 Tax Deductions Small Businesses Miss

Camille Hayes · October 8, 2025 · 8 min read

Home office, vehicle, retirement, health insurance, education. The list of missed deductions is longer than most owners expect.

Most missed deductions aren't exotic, they're routine expenses that owners don't realize qualify. We reviewed 200 returns and pulled the twenty most often missed deductions.

Home office deduction, vehicle mileage, self employed health insurance, retirement contributions, professional development, banking and merchant fees, and Section 179 asset elections top the list.

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