The Complete Guide to Business Expense Categories

Why Categories Matter

Proper expense categorization isn’t just busywork—it’s the foundation of smart tax planning. The IRS expects specific categories, and getting them right can save you thousands.

The Essential Categories

1. Office Expenses

Paper, pens, printer ink, staplers. If it lives on or near your desk, it’s an office expense. Deductible at 100%.

2. Travel

Flights, hotels, rental cars. But remember: personal vacation days embedded in business trips aren’t deductible. Keep a travel log.

3. Meals & Entertainment

Post-Tax Cuts and Jobs Act, most business meals are 50% deductible. Client dinners, coffee meetings, even solo working lunches can qualify if you’re traveling for business.

4. Vehicle Expenses

You have two options: standard mileage rate ($0.67/mile in 2026) or actual expenses (gas, insurance, repairs). Pick one method and stick with it for the year.

5. Professional Development

Courses, conferences, certifications, books. If it makes you better at your job, it’s likely deductible.

The Seamless Advantage

Our AI automatically categorizes 95% of expenses based on merchant data. You review the remaining 5%, saving hours every month.