Every year, small business owners leave money on the table simply because they don't know a deduction exists, or assume it doesn't apply to them. They're standard, legitimate deductions that get missed because they're easy to overlook in the day-to-day of running a business.
Here are five that come up often enough that they're worth double-checking against your own records.
The Home Office Deduction
If you use part of your home regularly and exclusively for business, you may be able to deduct a portion of your rent or mortgage interest, utilities, and insurance. Many owners skip this because they assume it's an audit red flag, it's a normal deduction when calculated correctly and the space genuinely qualifies.
Vehicle Mileage for Business Use
Driving to meet clients, pick up supplies, or make deliveries adds up over a year. Whether you use the standard mileage rate or track actual expenses, this only works if you're keeping a log. The deduction is often missed simply because the tracking never happened.
Retirement Plan Contributions
Contributions to a SEP-IRA, Solo 401(k), or similar plan aren't just good for your future, they reduce your taxable income now. This is one of the more overlooked deductions because it feels like a personal finance decision rather than a business one.
Professional and Subscription Services
Software subscriptions, professional memberships, industry publications, and even the fees you pay an accountant are typically deductible. Small recurring charges like these are easy to lose track of across a year of bank statements.
Startup and Organizational Costs
If your business launched this year, costs like market research, legal fees for setting up your LLC, and initial marketing can often be deducted or amortized. These are frequently missed because owners don't realize pre-launch expenses can still count.
Worth Remembering
A deduction only helps if you can support it with records. Keep receipts, mileage logs, and statements organized throughout the year rather than trying to reconstruct them in April — it's the difference between a deduction you can actually claim and one you have to guess at.
The Bigger Picture
None of these deductions are complicated on their own. What trips people up is simply not knowing they apply, or not having the documentation to back them up when it's time to file. A quick mid-year check-in with your accountant is usually enough to catch anything you might be missing before it's too late to do anything about it.
This article is for general informational purposes and isn't personalized tax advice. Deduction eligibility depends on your specific situation. Talk to your accountant before making decisions based on this or any general guide.