Expense categories exist for two reasons: your tax return needs them, and you need them to understand your own business. Getting them roughly right and consistent matters far more than getting them perfect once.
Here is the working list most small businesses need, in plain language.
The core categories
- Advertising — website, ads, signage, business cards, sponsorships, promotional swag.
- Car and truck — mileage or actual vehicle costs, including fuel, repairs, insurance, and registration on business vehicles.
- Contract labor — payments to subcontractors and 1099 workers who are not employees.
- Insurance — general liability, professional liability, commercial vehicle. Health insurance for the owner is handled separately.
- Legal and professional services — attorney fees, CPA fees, bookkeeping, consultants.
- Office expense — paper, printing, postage, software subscriptions used to run the office.
- Rent or lease — shop space, commissary, storage unit, equipment rentals.
- Repairs and maintenance — keeping equipment and property working, not improving or replacing it.
- Supplies — consumables used in the work itself: cleaning products, materials, small tools.
- Taxes and licenses — business licenses, permits, payroll taxes, state fees.
- Travel — lodging and transportation for overnight business trips.
- Meals — business meals, generally 50% deductible, with the business purpose noted.
- Utilities — phone, internet, electricity, and water for business space.
- Wages — pay to actual W-2 employees.
The four categories owners get wrong most often
1. Repairs vs. improvements
Fixing the transmission on the work truck is a repair, deductible now. Replacing the engine or buying a second truck is a capital asset that gets depreciated. The rule of thumb: does it restore what you had, or give you something better and longer-lasting?
2. Supplies vs. equipment
A box of trash bags is supplies. A $2,400 pressure washer is equipment. The line is durability, not price alone — though most owners can expense smaller tools in the year purchased under current rules. Ask your preparer where they want the cutoff.
3. Contract labor vs. wages
If you control when, where, and how someone works, they are likely an employee, not a contractor, regardless of how you pay them. Misclassification is one of the more expensive mistakes a small business can make, and it does not go away by calling it contract labor on the books.
4. Meals vs. entertainment
A meal with a client is generally 50% deductible. Tickets to a game are entertainment and generally not deductible at all. Note who you were with and why on every business meal — that one sentence is what makes the deduction defensible.
Personal expenses that are partly business
Cell phone, home internet, and a home office are common. These need a reasonable business-use percentage, applied consistently. If your phone is 70% business, deduct 70% every month — do not deduct 100% in the months you remember and 0% in the months you forget.
The mistake behind all the other mistakes
Inconsistency. A business that files fuel under 'car and truck' in January, 'supplies' in April, and 'office expense' in September has no usable P&L, no matter how accurate any single entry is. Pick a home for each recurring expense and never move it.
Making it automatic
LedgerFast maps transactions to Schedule C categories as they come in, across bank, cash, Venmo, and Zelle, so the categorization happens once instead of every January. The year-end Tax Organizer hands your CPA a clean package with everything already sorted.
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