Small businesses can typically write-off expenses in the following categories: Advertising, Business Use of Car, Business Use of Home, Contractors, Depreciation, Education and Training, Employee Benefits (such as health insurance), Insurance, Interest, Legal and Professional, Fees, Meals and Entertainment, Miscellaneous (bank fees, wages, etc.), Office Supplies & Postage, Rent and Lease, Retirement Plans, Supplies (internet, equipment, etc.), and Travel.